Intelligent Control of Solar Power Inverter
Design of solar power inverters to be considered two key factors of efficiency and harmonic distortion. Efficiency can be divided into two parts: the solar energy efficiency and inverter efficiency. Inverter efficiency depends largely on the design of the use of external components, rather than the controller; and solar energy efficiency and controller to control the solar panel array. Each solar panel array, a maximum operating power depends largely on the array of temperature and light. MCU must control the solar panel array, output load, so that the work array maximum power. Since this is not a math-intensive algorithms, so you can use low-cost MCU to complete the task.
Currently, most solar power inverter solar panels can only come from one of the best position of the solar panels to optimize the overall efficiency. This optimization method has seriously hampered the efficiency of solar power generation systems. If the PV system in the non-optimal voltage and current level of operation, the system efficiency is very low, wasted a good opportunity to collect solar energy. In photovoltaic systems, solar panels are parallel by a number of groups formed after the series. As festive lighting, as if the series in any one of the battery failure, it will cause the entire battery pack failure. In addition, when there is partial shade or debris such as shelter PV systems, this situation may also occur.
In order to solve these problems, the current solar panels are integrated bypass diode, so that current can bypass the masked part of the failure of the battery plates. Start diode, which can be current re-routing, that is diverted to bypass the battery string on failure. As a result, not only a waste of electricity supply by the potential masking panels, but also reduces the total voltage of the battery pack. Select the panels based on the principle of the best operating point, inverters have to decide whether strings should be optimized for the affected battery voltage, or should not optimize the other affected the energy generated by the battery pack. In most cases, would choose to optimize the inverter does not affect the battery packs, and a corresponding reduction in the affected battery packs of the energy, or even completely close the affected battery packs. The result is that solar PV systems as long as there are 10% of the shelter, it will affect the amount of solar power in half. The main reason of this phenomenon is the current PV systems are not comparable with extremely sensitive solar cell structure to match. Therefore, we need to adopt a higher intelligence to develop solar energy technologies and products.
To this end, the United States National Semiconductor's new Solar Magic products, can be intelligent management of solar photovoltaic (PV) solar panels power, making solar energy management more intelligent and more efficient. A solution is the so-called "micro-inverters", in each cell board are installed inverter. However, the key factors affecting PV system is reliability, cost and efficiency. Advanced micro-optimizer technology can significantly improve the solar power industry, cost-effectiveness and productivity. With its deep expertise in solar energy, experience and a reliable core technology, National Semiconductor Solar Magic technology can monitor and optimize each cell board capacity and to improve the current flow in the battery plates. Solar Magic reflects the United States National Semiconductor in the mixed-signal and power management leader in the field of advanced algorithms. Through the use of Solar Magic technology, solar power generation system Ke Wanhui more than 50% loss due to transmission, or a shadow mask with the loss of generating capacity. Micro-optimizer will intelligently manage each cell board, so that they can be the best power point to run, even if the series within the battery pack failure of individual panels will not affect the overall efficiency of the system. National Semiconductor in 2009 introduced a new micro-optimizer will promote the development of solar photovoltaic technology, renewable energy play an important role.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn.
2010年1月26日星期二
IGBT or MOSFET
IGBT or MOSFET
In the solar energy conversion process, there are various kinds of advanced power devices can be used, such as MOSFET, bipolar junction transistors (BJT) and the IGBT. To achieve the best conversion efficiency and performance, choose the right inverter for solar power transistors challenging and very time-consuming.
Over the years studies have shown that, IGBT power devices can provide more than any other advantages, including a more current handling capability, with the voltage (rather than current) to facilitate realization of gate control, as well as an integrated package ultra-fast recovery diode achieve faster turn-off time. IGBT is a minority carrier device, its off-time depends on the minority carrier re-combination of speed, therefore, with the recent process technology and device structures to improve its switching characteristics have been significantly enhanced.
IGBT is basically have the structure of metal gate-oxide gate bipolar transistor (BJT). This design allows the gate IGBT can be the same as the MOSFET in order to replace the current to voltage control switch. As a BJT, IGBT's current handling capability higher than the MOSFET. At the same time, IGBT same applies BJT as a minority carrier device. This means that the speed of IGBT off by a handful of carriers to determine the composite rate of speed. In addition, IGBT's closing time and its collector - emitter saturation voltage (Vce (on)) is inversely proportional to.
If the IGBT has the same size and technology, a speed IGBT than the speed of a standard IGBT has a higher Vce (on). However, speeding the closure of IGBT Standard IGBT is much faster than the speed. Figure 2 shows this relationship by controlling the IGBT is a minority carrier recombination rate of the use of cycles in order to influence the closing time to achieve.
Generally speaking, due to a larger current IGBT (which is more than twice the MOSFET), so the cost of the program using IGBT than using low cost MOSFET. In addition to cost considerations, the device performance by the degree of power loss table, while the power loss can be divided into: conduction and switching categories. As a minority-carrier-based devices, under the high current, IGBT has a lower turn-on voltage, which means lower conduction losses. But the MOSFET switching speed faster than in IGBT switching losses so low. So for calling for lower switching frequencies and higher current applications, choose the IGBT is more suitable and has a more low-cost advantage. On the other hand, MOSFET have the ability to meet the high-frequency, low current applications, especially those of more than 100kHz switching frequency power inverter power module needs. Although the device cost point of view, MOSFET than in IGBT expensive, but its ability to deal with a higher switching frequency will simplify the magnetic design of the output filter will significantly reduce the size of the output inductor.
For these reasons, more manufacturers prefer therefore to a high level of energy in the power inverter used in IGBT. According to Microsemi company, the company's production of MOS8 IGBT in static and dynamic testing (to minimize the overall power loss) in the optimization of performance can be well suited to these applications. On the other hand, even if the cost of MOSFET is a major consideration, but for the introduction of a better program, it should re-examine the potential use of MOSFET, such as Microsemi's MOS7/MOS8 MOSFET with the leading features of the very suitable for the design of solar energy inverter.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn.
In the solar energy conversion process, there are various kinds of advanced power devices can be used, such as MOSFET, bipolar junction transistors (BJT) and the IGBT. To achieve the best conversion efficiency and performance, choose the right inverter for solar power transistors challenging and very time-consuming.
Over the years studies have shown that, IGBT power devices can provide more than any other advantages, including a more current handling capability, with the voltage (rather than current) to facilitate realization of gate control, as well as an integrated package ultra-fast recovery diode achieve faster turn-off time. IGBT is a minority carrier device, its off-time depends on the minority carrier re-combination of speed, therefore, with the recent process technology and device structures to improve its switching characteristics have been significantly enhanced.
IGBT is basically have the structure of metal gate-oxide gate bipolar transistor (BJT). This design allows the gate IGBT can be the same as the MOSFET in order to replace the current to voltage control switch. As a BJT, IGBT's current handling capability higher than the MOSFET. At the same time, IGBT same applies BJT as a minority carrier device. This means that the speed of IGBT off by a handful of carriers to determine the composite rate of speed. In addition, IGBT's closing time and its collector - emitter saturation voltage (Vce (on)) is inversely proportional to.
If the IGBT has the same size and technology, a speed IGBT than the speed of a standard IGBT has a higher Vce (on). However, speeding the closure of IGBT Standard IGBT is much faster than the speed. Figure 2 shows this relationship by controlling the IGBT is a minority carrier recombination rate of the use of cycles in order to influence the closing time to achieve.
Generally speaking, due to a larger current IGBT (which is more than twice the MOSFET), so the cost of the program using IGBT than using low cost MOSFET. In addition to cost considerations, the device performance by the degree of power loss table, while the power loss can be divided into: conduction and switching categories. As a minority-carrier-based devices, under the high current, IGBT has a lower turn-on voltage, which means lower conduction losses. But the MOSFET switching speed faster than in IGBT switching losses so low. So for calling for lower switching frequencies and higher current applications, choose the IGBT is more suitable and has a more low-cost advantage. On the other hand, MOSFET have the ability to meet the high-frequency, low current applications, especially those of more than 100kHz switching frequency power inverter power module needs. Although the device cost point of view, MOSFET than in IGBT expensive, but its ability to deal with a higher switching frequency will simplify the magnetic design of the output filter will significantly reduce the size of the output inductor.
For these reasons, more manufacturers prefer therefore to a high level of energy in the power inverter used in IGBT. According to Microsemi company, the company's production of MOS8 IGBT in static and dynamic testing (to minimize the overall power loss) in the optimization of performance can be well suited to these applications. On the other hand, even if the cost of MOSFET is a major consideration, but for the introduction of a better program, it should re-examine the potential use of MOSFET, such as Microsemi's MOS7/MOS8 MOSFET with the leading features of the very suitable for the design of solar energy inverter.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn.
The principle and structure of Solar Power Inverter
The principle and structure of Solar Power Inverter
Usually converted into DC to AC power the process is called rectification, phase-controlled rectifier is the most common AC - DC conversion process; while the DC into AC power to transform the process is called inverter, which is the reverse process of rectification . In the inverter circuit, in accordance with the nature of the load different inverter. And the power inverter is divided into active and passive inverter. If the exchange side of the circuit, on receiving the AC power to DC can be through the direct - the exchange of transformation, inverse becomes the AC power delivered to the same frequency AC power grid back up, called the active inverter. The corresponding device is called the active inverter to control the angle is greater than 90 ° phase-controlled rectifier is a common active inverter. And the DC can be transformed to the exchange of electrical energy directly to the non-load power supply circuit, known as passive inverter circuit, also known as converters.
Inverter types of inverter-excited, self-encouragement inverter, pulse width modulation (PWM) inverter. Reed inverter in which he need for external AC voltage source, to provide thyristor rectifier voltage. Excited mainly used in high-power inverter-grid situations; for less than 1MW photovoltaic power generation systems, mainly in inverter mode and self-motivation. And self-encouragement inverter does not require an external AC voltage source, rectifier voltage from the inverter part of the storage components (such as capacitors) to provide or to be off by increasing the rectifier valve (such as MOSFET or IGBT) of the resistance value to achieve. The output voltage is pulse modulated and self-motivation is known as pulse inverter. This cycle, by increasing the power inverter switching frequency of the pulse, to reduce the voltage and current harmonics content; harmonic content was proportional to the frequency and pulse switch. Currently, grid-connected inverter output There are two main control modes: voltage mode control mode and current-mode control mode. Voltage-control mode based on the principle of output voltage as the controlled quantity, the system output and the power grid voltage in phase with the frequency of the voltage signal, the entire system is equivalent to a small resistance controlled voltage source; current-mode control mode is the principle of to the output inductor current as the controlled target, the system output and the power grid voltage current in phase with the same frequency signal, the entire system is equivalent to a large resistance controlled current source.
At present, solar inverters have been a variety of topologies, the most common for single-phase half-bridge, full bridge, and Heric (Sunways patent) inverter, as well as for three-phase six-pulse bridge and the midpoint of pliers bit (NPC) inverter. A typical solar inverter framework is generally a four-switch full-bridge topology.
In essence, in order to maintain a low harmonic and power loss minimum, high-side IGBT inverter uses pulse-width modulation (PWM), low-side IGBT Zeyi 60Hz frequency conversion current direction. By allowing the use of high-side IGBT above 20kHz or 20kHz frequency and PWM modulation scheme 50/60Hz, output inductors L1 and L2 can be done at the instance of a very small, and still be able to efficiently filter the harmonic components. And standards with fast speed compared to planar devices, switching speed of 20kHz ultra-fast channel-type IGBT can provide the lowest total conduction losses and switching power loss. Similarly, for low-voltage side switching circuit, working in the standard 60Hz rate of IGBT can offer the lowest power loss.
The design of the switch technology has the following advantages: by allowing high-pressure side and low-side IGBT independently optimized to achieve very high efficiency; high-pressure side, with the package, there is no soft-recovery diode freewheeling time, thus eliminating unnecessary switching losses; low side IGBT's switching frequency is only 60Hz, so these IGBT conduction losses are the main factors; no cross-conduction, because any point in time switches have occurred in the right corner on the two devices (Q1 and Q4 or Q2 and Q3); there is no bus through this possibility, because the bridge will never be the same side of the IGBT switches in a complementary manner; jumper low-side IGBT of the same package, ultra-fast, soft recovery diodes are optimized to allow continued flow and reverse-recovery period The loss to a minimum.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn.
Usually converted into DC to AC power the process is called rectification, phase-controlled rectifier is the most common AC - DC conversion process; while the DC into AC power to transform the process is called inverter, which is the reverse process of rectification . In the inverter circuit, in accordance with the nature of the load different inverter. And the power inverter is divided into active and passive inverter. If the exchange side of the circuit, on receiving the AC power to DC can be through the direct - the exchange of transformation, inverse becomes the AC power delivered to the same frequency AC power grid back up, called the active inverter. The corresponding device is called the active inverter to control the angle is greater than 90 ° phase-controlled rectifier is a common active inverter. And the DC can be transformed to the exchange of electrical energy directly to the non-load power supply circuit, known as passive inverter circuit, also known as converters.
Inverter types of inverter-excited, self-encouragement inverter, pulse width modulation (PWM) inverter. Reed inverter in which he need for external AC voltage source, to provide thyristor rectifier voltage. Excited mainly used in high-power inverter-grid situations; for less than 1MW photovoltaic power generation systems, mainly in inverter mode and self-motivation. And self-encouragement inverter does not require an external AC voltage source, rectifier voltage from the inverter part of the storage components (such as capacitors) to provide or to be off by increasing the rectifier valve (such as MOSFET or IGBT) of the resistance value to achieve. The output voltage is pulse modulated and self-motivation is known as pulse inverter. This cycle, by increasing the power inverter switching frequency of the pulse, to reduce the voltage and current harmonics content; harmonic content was proportional to the frequency and pulse switch. Currently, grid-connected inverter output There are two main control modes: voltage mode control mode and current-mode control mode. Voltage-control mode based on the principle of output voltage as the controlled quantity, the system output and the power grid voltage in phase with the frequency of the voltage signal, the entire system is equivalent to a small resistance controlled voltage source; current-mode control mode is the principle of to the output inductor current as the controlled target, the system output and the power grid voltage current in phase with the same frequency signal, the entire system is equivalent to a large resistance controlled current source.
At present, solar inverters have been a variety of topologies, the most common for single-phase half-bridge, full bridge, and Heric (Sunways patent) inverter, as well as for three-phase six-pulse bridge and the midpoint of pliers bit (NPC) inverter. A typical solar inverter framework is generally a four-switch full-bridge topology.
In essence, in order to maintain a low harmonic and power loss minimum, high-side IGBT inverter uses pulse-width modulation (PWM), low-side IGBT Zeyi 60Hz frequency conversion current direction. By allowing the use of high-side IGBT above 20kHz or 20kHz frequency and PWM modulation scheme 50/60Hz, output inductors L1 and L2 can be done at the instance of a very small, and still be able to efficiently filter the harmonic components. And standards with fast speed compared to planar devices, switching speed of 20kHz ultra-fast channel-type IGBT can provide the lowest total conduction losses and switching power loss. Similarly, for low-voltage side switching circuit, working in the standard 60Hz rate of IGBT can offer the lowest power loss.
The design of the switch technology has the following advantages: by allowing high-pressure side and low-side IGBT independently optimized to achieve very high efficiency; high-pressure side, with the package, there is no soft-recovery diode freewheeling time, thus eliminating unnecessary switching losses; low side IGBT's switching frequency is only 60Hz, so these IGBT conduction losses are the main factors; no cross-conduction, because any point in time switches have occurred in the right corner on the two devices (Q1 and Q4 or Q2 and Q3); there is no bus through this possibility, because the bridge will never be the same side of the IGBT switches in a complementary manner; jumper low-side IGBT of the same package, ultra-fast, soft recovery diodes are optimized to allow continued flow and reverse-recovery period The loss to a minimum.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn.
The requirements needing for solar energy inverter
The requirements needing for solar energy inverter
Through the solar photovoltaic technology to convert solar radiation into electrical energy is now on the market the most effective is also the most potential for development of renewable energy technologies. Now, ordinary solar PV systems are composed of many closely linked to the composition of solar panels. The panels first division series, and then the series of different batteries in parallel together to form photovoltaic arrays.
At present, China photovoltaic power generation system is mainly DC system will soon be issued by the solar power to recharge the battery while the battery power directly to the load, such as the northwest region of China use more solar household lighting systems, as well as away from the grid for the microwave station power system are DC system. Such a system is simple, low cost, but because of the different load DC voltage (eg 12V, 24V, 48V, etc.), it is difficult to achieve the system standardization and interoperability, in particular electricity for civilian use, as most of the exchange of the load, to DC power photovoltaic power supply is difficult to enter the market as a commodity. PV grid will eventually run, and this must be a mature market model, the exchange of photovoltaic power generation system in the future will become the mainstream of photovoltaic power generation.
Solar Power Inverter is a power electronic circuits, solar panels can convert the DC voltage AC voltage to drive home appliances, lighting and electrical tools, communication load, the whole solar system, a critical component. Inverter has two basic functions: one is to complete the DC / AC current converter connected to the grid, on the other hand is to identify the best operating point in order to optimize the efficiency of solar photovoltaic systems. For a given solar radiation, temperature and battery type, solar photovoltaic systems have a unique corresponding optimal voltage and current, so that the largest photovoltaic system to produce energy. Therefore, in applications in solar power inverter must meet the following basic requirements:
1. Requires a high efficiency. As the current high prices of solar cells, in order to maximize the use of solar cells, to improve system efficiency, we must try to improve inverter efficiency.
2. Requires a higher reliability. Photovoltaic power generation system is currently used in remote areas, many power plants unattended and maintenance, which requires inverter circuit with a reasonable structure, rigorous selection of components and requested inverter with various protection features such as input DC reverse polarity protection, output short circuit protection exchange, thermal, overload protection and so on.
3. Require DC input voltage to adapt to a wide range of terminal voltage due to solar cells with the load and sunlight intensity changes, although the solar cell battery voltage plays an important role, but because of the battery voltage with the remaining battery capacity and internal resistance changes in volatility, especially when the aging battery terminal voltage when the change of its large range, such as the 12V battery, its terminal voltage can be varied between 10V ~ 16V, which requires to be in a larger inverter DC input voltage assurance that the work, and to ensure that the exchange of the output voltage stability.
4. In the medium and large-capacity photovoltaic power generation system, the inverter power output should be less distortion sine wave. This is because in the middle and large-capacity systems, the use of a square wave power supply, the output will contain more harmonics, high harmonics will result in additional losses, many of photovoltaic power generation system load for the communications or instrumentation These devices have high requirements for power quality, among others, large-capacity photovoltaic power generation system and network run-time, in order to avoid contamination with the public electricity grid, also called sine-wave inverter output current.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn.
Through the solar photovoltaic technology to convert solar radiation into electrical energy is now on the market the most effective is also the most potential for development of renewable energy technologies. Now, ordinary solar PV systems are composed of many closely linked to the composition of solar panels. The panels first division series, and then the series of different batteries in parallel together to form photovoltaic arrays.
At present, China photovoltaic power generation system is mainly DC system will soon be issued by the solar power to recharge the battery while the battery power directly to the load, such as the northwest region of China use more solar household lighting systems, as well as away from the grid for the microwave station power system are DC system. Such a system is simple, low cost, but because of the different load DC voltage (eg 12V, 24V, 48V, etc.), it is difficult to achieve the system standardization and interoperability, in particular electricity for civilian use, as most of the exchange of the load, to DC power photovoltaic power supply is difficult to enter the market as a commodity. PV grid will eventually run, and this must be a mature market model, the exchange of photovoltaic power generation system in the future will become the mainstream of photovoltaic power generation.
Solar Power Inverter is a power electronic circuits, solar panels can convert the DC voltage AC voltage to drive home appliances, lighting and electrical tools, communication load, the whole solar system, a critical component. Inverter has two basic functions: one is to complete the DC / AC current converter connected to the grid, on the other hand is to identify the best operating point in order to optimize the efficiency of solar photovoltaic systems. For a given solar radiation, temperature and battery type, solar photovoltaic systems have a unique corresponding optimal voltage and current, so that the largest photovoltaic system to produce energy. Therefore, in applications in solar power inverter must meet the following basic requirements:
1. Requires a high efficiency. As the current high prices of solar cells, in order to maximize the use of solar cells, to improve system efficiency, we must try to improve inverter efficiency.
2. Requires a higher reliability. Photovoltaic power generation system is currently used in remote areas, many power plants unattended and maintenance, which requires inverter circuit with a reasonable structure, rigorous selection of components and requested inverter with various protection features such as input DC reverse polarity protection, output short circuit protection exchange, thermal, overload protection and so on.
3. Require DC input voltage to adapt to a wide range of terminal voltage due to solar cells with the load and sunlight intensity changes, although the solar cell battery voltage plays an important role, but because of the battery voltage with the remaining battery capacity and internal resistance changes in volatility, especially when the aging battery terminal voltage when the change of its large range, such as the 12V battery, its terminal voltage can be varied between 10V ~ 16V, which requires to be in a larger inverter DC input voltage assurance that the work, and to ensure that the exchange of the output voltage stability.
4. In the medium and large-capacity photovoltaic power generation system, the inverter power output should be less distortion sine wave. This is because in the middle and large-capacity systems, the use of a square wave power supply, the output will contain more harmonics, high harmonics will result in additional losses, many of photovoltaic power generation system load for the communications or instrumentation These devices have high requirements for power quality, among others, large-capacity photovoltaic power generation system and network run-time, in order to avoid contamination with the public electricity grid, also called sine-wave inverter output current.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn.
2010年1月23日星期六
The development and implementation of efficient algorithms
The development and implementation of efficient algorithms
The higher the DSP performance, then it can run within a certain period of time greater the number of algorithm cycles, and be able to handle more complex algorithms. Blackfin BF50x outstanding performance and a sufficiently large on-chip memory (4 MB executable flash memory), allowing designers to use more sophisticated algorithms to achieve a more robust system capabilities and more precision.
For example, for solar power inverter applications, the inverters can be a complex algorithm to the fluctuating DC output is converted to "clean" current, as well as residential and urban photovoltaic (PV) cells produce an array into the commercial power grid and / or local grid current to adjust. Maximum Power Point Tracking (MPPT) algorithm can extract the maximum individual and / or series of energy generated by solar panels, designers typically use a variety of MPPT algorithm to adapt to a variety of environmental factors. Blackfin BF50x processor, the excellent signal processing performance adequate to deal with the complexity of the MPPT algorithm, to ensure the realization of ultra-high efficiency power converter applications extract, while the prices are pretty, low-power processors and the MCU is difficult to competence.
For motor control applications, the ability to handle complex algorithms to ensure that the system behavior according to changes in the implementation of real-time dynamic control in order to obtain a more stable operating characteristics and lower power consumption. The use of a sensorless Field Oriented Control (FOC) algorithm, then the permanent magnet synchronous motors can be (PMSM) the implementation of variable speed control, thereby enhancing energy efficiency, and the motor without the need to speed and position sensor (sensorless vector control). Based on the Blackfin BF50x designed to take advantage of advanced modeling algorithms that can accurately determine the rotor position and speed, and without the use of position / speed sensor, so that the system smaller, lower cost, reliability is even higher.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn.
The higher the DSP performance, then it can run within a certain period of time greater the number of algorithm cycles, and be able to handle more complex algorithms. Blackfin BF50x outstanding performance and a sufficiently large on-chip memory (4 MB executable flash memory), allowing designers to use more sophisticated algorithms to achieve a more robust system capabilities and more precision.
For example, for solar power inverter applications, the inverters can be a complex algorithm to the fluctuating DC output is converted to "clean" current, as well as residential and urban photovoltaic (PV) cells produce an array into the commercial power grid and / or local grid current to adjust. Maximum Power Point Tracking (MPPT) algorithm can extract the maximum individual and / or series of energy generated by solar panels, designers typically use a variety of MPPT algorithm to adapt to a variety of environmental factors. Blackfin BF50x processor, the excellent signal processing performance adequate to deal with the complexity of the MPPT algorithm, to ensure the realization of ultra-high efficiency power converter applications extract, while the prices are pretty, low-power processors and the MCU is difficult to competence.
For motor control applications, the ability to handle complex algorithms to ensure that the system behavior according to changes in the implementation of real-time dynamic control in order to obtain a more stable operating characteristics and lower power consumption. The use of a sensorless Field Oriented Control (FOC) algorithm, then the permanent magnet synchronous motors can be (PMSM) the implementation of variable speed control, thereby enhancing energy efficiency, and the motor without the need to speed and position sensor (sensorless vector control). Based on the Blackfin BF50x designed to take advantage of advanced modeling algorithms that can accurately determine the rotor position and speed, and without the use of position / speed sensor, so that the system smaller, lower cost, reliability is even higher.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn.
Photovoltaic Industry will develope rapidly these two years
Photovoltaic Industry will develope rapidly these two years
2010 PV market: wind prevailing over the west through the study of national policy, the economic costs of PV, we found that when the solar share of GDP, subsidies to achieve extreme of 15:00, photovoltaic subsidy policy prone to shift. Veteran PV market, Germany, and Spain are close to this limit, we judge its hard to pick up within two years. In contrast, the United States, Japan, China and three photovoltaic subsidy is far away from this limit, the Government has a positive attitude, photovoltaic market is expected to increase substantially this year. Especially the Chinese market, in the Golden Sun works to accelerate and renewable energy additional context of a large number of surplus, an increase is expected to reach a more than doubled the level of demand to reach 550MW. Taking into account factors affecting the declining German market this year, in 2010, slower growth in the world PV market in general.
PV market in 2011: restoration of growth in the number of PV market by 2011, monetary policy tightening may be shrouded in haze. But even in 2010, the three photovoltaic subsidies, under the assumption of a substantial increase in its share of GDP, is still far away from the ceiling, in addition, the decline in the cost of photovoltaic products, conversion rates have increased, increased competition led to a decline in the cost of PV subsidies. Therefore, from a global perspective there is no significant decline in a country the risk of PV market. In addition, through analysis found that the Chinese PV market is subject to changes in interest rates had little impact on the comprehensive consideration of China's new energy, low-carbon economy, supportive attitude, we expect the domestic market will maintain rapid growth. Driven by in the Chinese market in 2011, the world PV market will return to quantitative growth.
Concerned about the opportunities for PV Inverter
Through this analysis we believe that China's PV market is the only one the next two years to maintain the fast-growing market. The rise of the domestic market needs of a large number of PV inverters and PV installed capacity to complete. In the 2008 -09 years, PV prices fall fashion, photovoltaic inverter prices remain stable, and the basic domestic market so far been completely monopolized by foreign manufacturers, reflects the power inverter high technical barriers. We expect that as the domestic listed companies to enter the field, will produce a number of dark horse stocks.
Investment advice: Focus on Kyushu Electric, Ke-hua Hengsheng. The two companies already have or are in the process of technologies for photovoltaic inverter work embodies the strategic vision of excellence; two companies have lower incomes, with explosive growth in space; two companies have just listed, with a large number of Chao had raised funds, once the advent of easy to grasp the opportunity to live. Ruoqiang to compare the two companies, Kyushu Electric lower incomes, its main focus on support of national high-voltage operations, a higher growth rate, the proposed radical investors to participate. Branch China Hengsheng low price-earnings ratio, and already have a PV inverter technology, technology, lower risk, we recommend investors to participate in sound.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn.
2010 PV market: wind prevailing over the west through the study of national policy, the economic costs of PV, we found that when the solar share of GDP, subsidies to achieve extreme of 15:00, photovoltaic subsidy policy prone to shift. Veteran PV market, Germany, and Spain are close to this limit, we judge its hard to pick up within two years. In contrast, the United States, Japan, China and three photovoltaic subsidy is far away from this limit, the Government has a positive attitude, photovoltaic market is expected to increase substantially this year. Especially the Chinese market, in the Golden Sun works to accelerate and renewable energy additional context of a large number of surplus, an increase is expected to reach a more than doubled the level of demand to reach 550MW. Taking into account factors affecting the declining German market this year, in 2010, slower growth in the world PV market in general.
PV market in 2011: restoration of growth in the number of PV market by 2011, monetary policy tightening may be shrouded in haze. But even in 2010, the three photovoltaic subsidies, under the assumption of a substantial increase in its share of GDP, is still far away from the ceiling, in addition, the decline in the cost of photovoltaic products, conversion rates have increased, increased competition led to a decline in the cost of PV subsidies. Therefore, from a global perspective there is no significant decline in a country the risk of PV market. In addition, through analysis found that the Chinese PV market is subject to changes in interest rates had little impact on the comprehensive consideration of China's new energy, low-carbon economy, supportive attitude, we expect the domestic market will maintain rapid growth. Driven by in the Chinese market in 2011, the world PV market will return to quantitative growth.
Concerned about the opportunities for PV Inverter
Through this analysis we believe that China's PV market is the only one the next two years to maintain the fast-growing market. The rise of the domestic market needs of a large number of PV inverters and PV installed capacity to complete. In the 2008 -09 years, PV prices fall fashion, photovoltaic inverter prices remain stable, and the basic domestic market so far been completely monopolized by foreign manufacturers, reflects the power inverter high technical barriers. We expect that as the domestic listed companies to enter the field, will produce a number of dark horse stocks.
Investment advice: Focus on Kyushu Electric, Ke-hua Hengsheng. The two companies already have or are in the process of technologies for photovoltaic inverter work embodies the strategic vision of excellence; two companies have lower incomes, with explosive growth in space; two companies have just listed, with a large number of Chao had raised funds, once the advent of easy to grasp the opportunity to live. Ruoqiang to compare the two companies, Kyushu Electric lower incomes, its main focus on support of national high-voltage operations, a higher growth rate, the proposed radical investors to participate. Branch China Hengsheng low price-earnings ratio, and already have a PV inverter technology, technology, lower risk, we recommend investors to participate in sound.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn.
2010年1月22日星期五
Application of new components become very popular
Application of new components become very popular
In addition to renewable energy applications, energy-saving emission reduction "green" electronic applications include energy-efficient transportation, smart power grid construction, general electronic products such as energy conservation. All these applications, a variety of new inverter, IC, components, modules and components will play an important role, they can improve performance by reducing emissions to promote energy conservation.
Germany Isa al-hui Tejo Gisle Prism Co., Ltd. is a company with 500 years of history, has an excellent current and voltage detection, measurement devices, applicable to a very wide temperature range, for solar, wind base stations to provide highly accurate The ultra-small current-sensing applications. The company also has among the world's leading high-power motor drive, DC-DC converters and low-resistance power precision resistors, for demanding security and stability of the hybrid vehicle system by solid security. The company will bring to this forum, "Power Electronics in the new method for precise current measurement" and the keynote address.
In his speech, rer.nat. Ullrich Hetzler, Dr. propose a new streaming technology, a range of currents to 5000A to achieve low-cost, low resistance, high-quality streaming. This technology has opened up a 16-bit, 0.1%, 100kHz, TC10-current detector mysteries. He also detailed for the solar and wind power stations, high-power motor drive, DC-DC converter and, like fuel injection, power steering and electric and hybrid electric vehicle battery power inverter in the management of a variety of automotive applications of current detection solutions.
As the world leader in electrical protection specialists, law Leixiaomate the one hand, renewable energy can provide a package of products to protect the power system from fault currents, surge, overheating problem of the damage; the other hand, can protect the UPS , power systems, and soft-start devices, which all help to save energy. The forum, the law Leixiaomate experts lecture on the theme "solar photovoltaic power generation system, electrical protection," will explore the solar photovoltaic power plant safe operation of the key issues as well as their solar power field for the protection of electrical equipment to solve program, and demonstrate the protection of the basic concepts of how to choose the most suitable protection program guidance. The audience will also share in the company's successful experience in Europe and a number of projects to carry out the situation.
France Leixiaomate extensively involved in wind energy, solar photovoltaic power generation, nuclear energy and even energy storage industry, two successful product lines is a semiconductor fuse, and water-cooled plate. Of its semiconductor fuse meets the highest industry standards, and has reliable performance, with its protection, wind turbines or solar power plant, power conversion equipment during operation to ensure absolute security. Water-cooled plate will help to control overheating in the semiconductor components and heat damage, using a custom design and the best materials and manufacturing processes.
With China's accelerated urban development, light rail transport are increasingly being incorporated into urban construction, government departments, agendas, therefore, electric locomotives, high-speed EMUs and subway cars will be a substantial increase in demand. The vehicles using the main traction converter and auxiliary converters for high-voltage IGBT modules has brought high-growth opportunities. In electric vehicles and hybrid electric vehicle field, China's "10 City, 1000" program was in February 2009 launched, IGBT is the key generators and motor-driven devices. In addition, the speed sensor light rail locomotive AC traction control system for the development of this is also a promotion.
Hybrid and electric vehicles, alternative drive technology is the future power device applications is no doubt the inevitable emerging markets. The new energy vehicles have become the auto industry trends. More and more manufacturers invest more resources in this area, hoping for greater returns.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn.
In addition to renewable energy applications, energy-saving emission reduction "green" electronic applications include energy-efficient transportation, smart power grid construction, general electronic products such as energy conservation. All these applications, a variety of new inverter, IC, components, modules and components will play an important role, they can improve performance by reducing emissions to promote energy conservation.
Germany Isa al-hui Tejo Gisle Prism Co., Ltd. is a company with 500 years of history, has an excellent current and voltage detection, measurement devices, applicable to a very wide temperature range, for solar, wind base stations to provide highly accurate The ultra-small current-sensing applications. The company also has among the world's leading high-power motor drive, DC-DC converters and low-resistance power precision resistors, for demanding security and stability of the hybrid vehicle system by solid security. The company will bring to this forum, "Power Electronics in the new method for precise current measurement" and the keynote address.
In his speech, rer.nat. Ullrich Hetzler, Dr. propose a new streaming technology, a range of currents to 5000A to achieve low-cost, low resistance, high-quality streaming. This technology has opened up a 16-bit, 0.1%, 100kHz, TC10-current detector mysteries. He also detailed for the solar and wind power stations, high-power motor drive, DC-DC converter and, like fuel injection, power steering and electric and hybrid electric vehicle battery power inverter in the management of a variety of automotive applications of current detection solutions.
As the world leader in electrical protection specialists, law Leixiaomate the one hand, renewable energy can provide a package of products to protect the power system from fault currents, surge, overheating problem of the damage; the other hand, can protect the UPS , power systems, and soft-start devices, which all help to save energy. The forum, the law Leixiaomate experts lecture on the theme "solar photovoltaic power generation system, electrical protection," will explore the solar photovoltaic power plant safe operation of the key issues as well as their solar power field for the protection of electrical equipment to solve program, and demonstrate the protection of the basic concepts of how to choose the most suitable protection program guidance. The audience will also share in the company's successful experience in Europe and a number of projects to carry out the situation.
France Leixiaomate extensively involved in wind energy, solar photovoltaic power generation, nuclear energy and even energy storage industry, two successful product lines is a semiconductor fuse, and water-cooled plate. Of its semiconductor fuse meets the highest industry standards, and has reliable performance, with its protection, wind turbines or solar power plant, power conversion equipment during operation to ensure absolute security. Water-cooled plate will help to control overheating in the semiconductor components and heat damage, using a custom design and the best materials and manufacturing processes.
With China's accelerated urban development, light rail transport are increasingly being incorporated into urban construction, government departments, agendas, therefore, electric locomotives, high-speed EMUs and subway cars will be a substantial increase in demand. The vehicles using the main traction converter and auxiliary converters for high-voltage IGBT modules has brought high-growth opportunities. In electric vehicles and hybrid electric vehicle field, China's "10 City, 1000" program was in February 2009 launched, IGBT is the key generators and motor-driven devices. In addition, the speed sensor light rail locomotive AC traction control system for the development of this is also a promotion.
Hybrid and electric vehicles, alternative drive technology is the future power device applications is no doubt the inevitable emerging markets. The new energy vehicles have become the auto industry trends. More and more manufacturers invest more resources in this area, hoping for greater returns.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn.
Munich Shanghai Electronics Show in 2010 singing the main theme of power electronics technology
Munich Shanghai Electronics Show in 2010 singing the main theme of power electronics technology
Copenhagen for the recently concluded meeting, the Chinese government introduced a specific quantitative policy, "By 2020, China's carbon dioxide emissions unit of GDP decreased in 2005 compared with 40% -45%." At the same time in 2010 the "Eleventh Five-Year" last year, the unit GDP energy consumption reduced by 20% of the target is also the need to achieve. In the "energy-saving emission reduction" policy, to quantify, "Eleventh Five-Year" in the final sprint of new renewable energy applications coupled with the continuous development of smart grid continued construction, hybrid and electric vehicle markets, such as a number of favorable factors to stimulate the common role of 2010, will be a great development of the power electronics industry for one year.
To meet this unprecedented development opportunities, comply with the will sing the main theme of power electronic technology beat, by the China Power Supply Society and Munich Trade Fairs International Group co-sponsored a comprehensive technical forum "China's Power Electronic Technology Application Development Forum" in 2010 March 16-17 annual Shanghai Electronics Show in Munich again during the grand opening, covering new materials, new devices, new devices, new systems, AC / DC motor drive and control, all kinds of new power inverter, as well as the latest applications for development and progress, in particular, will power electronics technology in the new environment, the role played by the new focus on the start.
To overcome the bottleneck of renewable energy applications
Along with renewable energy sources (such as wind and solar power field) the continuous development of distributed generation will become the whole power supply system an important part. With the use of conventional resources, costs continue to rise, the proportion of renewable energy sources will continue to rise. Many agencies predicted that by 2030, renewable energy in the global energy consumption share will be increased substantially. Among them, the U.S. Department of Energy Information Administration estimated that this ratio is about 8%, Greenpeace and the European Renewable Energy Council forecast is as high as 30%. China has also just December 26, 2009 by modifying the 2006 renewable energy law that requires power grid operators are required to purchase all renewable energy produced by electricity. This amendment would like to enhance China's renewable energy share, that is, to achieve by 2020 China's total generating capacity by 15%.
Compared with solar energy, wind power is a more stable source of energy, the strength of the wind is changing minute by minute, day, wind power is not in the same way throughout the year may be exposed to extreme heat, cold, and hurricanes. As a wind energy conversion and control of key devices, IGBT module to withstand the frequent power and temperature changes, which will shorten the life span IGBT. IEC60747 defines the parameters related to life, that power weeks time and temperature-week times, it is important IGBT module reliability index.
As an advocate of green energy sector, Infineon IGBT modules has been committed to the improvement of power density. With 10 years in the locomotive traction in the IGBT module experience, by means of fourth-generation IGBT4 chip module process technology and improvements to its maximum operating junction temperature from 125 degrees to 150 degrees, making the system energy efficiency ratio significantly increased, IGBT life expectancy has also increased significantly to meet the wind power and electric vehicles and other new applications demand. Currently used IGBT4 chip Infineon IGBT power modules weeks time than the previous generation products in the same working conditions, increased five-fold, the new packages, such as PrimePack ™ Temperature weeks time increased 7 times.
In addition to wind power market IGBT products, Infineon also has full-featured system components STACK products, including IGBT modules, driver protection, filter capacitor, dc bus, radiator and a series of inverter power unit. At present, they have succeeded in bringing the product into China, making China's wind power inverter manufacturers developed their own speed greatly improved, solving the biggest wind power supply chain bottlenecks.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn.
Copenhagen for the recently concluded meeting, the Chinese government introduced a specific quantitative policy, "By 2020, China's carbon dioxide emissions unit of GDP decreased in 2005 compared with 40% -45%." At the same time in 2010 the "Eleventh Five-Year" last year, the unit GDP energy consumption reduced by 20% of the target is also the need to achieve. In the "energy-saving emission reduction" policy, to quantify, "Eleventh Five-Year" in the final sprint of new renewable energy applications coupled with the continuous development of smart grid continued construction, hybrid and electric vehicle markets, such as a number of favorable factors to stimulate the common role of 2010, will be a great development of the power electronics industry for one year.
To meet this unprecedented development opportunities, comply with the will sing the main theme of power electronic technology beat, by the China Power Supply Society and Munich Trade Fairs International Group co-sponsored a comprehensive technical forum "China's Power Electronic Technology Application Development Forum" in 2010 March 16-17 annual Shanghai Electronics Show in Munich again during the grand opening, covering new materials, new devices, new devices, new systems, AC / DC motor drive and control, all kinds of new power inverter, as well as the latest applications for development and progress, in particular, will power electronics technology in the new environment, the role played by the new focus on the start.
To overcome the bottleneck of renewable energy applications
Along with renewable energy sources (such as wind and solar power field) the continuous development of distributed generation will become the whole power supply system an important part. With the use of conventional resources, costs continue to rise, the proportion of renewable energy sources will continue to rise. Many agencies predicted that by 2030, renewable energy in the global energy consumption share will be increased substantially. Among them, the U.S. Department of Energy Information Administration estimated that this ratio is about 8%, Greenpeace and the European Renewable Energy Council forecast is as high as 30%. China has also just December 26, 2009 by modifying the 2006 renewable energy law that requires power grid operators are required to purchase all renewable energy produced by electricity. This amendment would like to enhance China's renewable energy share, that is, to achieve by 2020 China's total generating capacity by 15%.
Compared with solar energy, wind power is a more stable source of energy, the strength of the wind is changing minute by minute, day, wind power is not in the same way throughout the year may be exposed to extreme heat, cold, and hurricanes. As a wind energy conversion and control of key devices, IGBT module to withstand the frequent power and temperature changes, which will shorten the life span IGBT. IEC60747 defines the parameters related to life, that power weeks time and temperature-week times, it is important IGBT module reliability index.
As an advocate of green energy sector, Infineon IGBT modules has been committed to the improvement of power density. With 10 years in the locomotive traction in the IGBT module experience, by means of fourth-generation IGBT4 chip module process technology and improvements to its maximum operating junction temperature from 125 degrees to 150 degrees, making the system energy efficiency ratio significantly increased, IGBT life expectancy has also increased significantly to meet the wind power and electric vehicles and other new applications demand. Currently used IGBT4 chip Infineon IGBT power modules weeks time than the previous generation products in the same working conditions, increased five-fold, the new packages, such as PrimePack ™ Temperature weeks time increased 7 times.
In addition to wind power market IGBT products, Infineon also has full-featured system components STACK products, including IGBT modules, driver protection, filter capacitor, dc bus, radiator and a series of inverter power unit. At present, they have succeeded in bringing the product into China, making China's wind power inverter manufacturers developed their own speed greatly improved, solving the biggest wind power supply chain bottlenecks.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn.
2010年1月20日星期三
China's first private solar PV grid power generation projects in Jining, Shandong
China's first private solar PV grid power generation projects in Jining, Shandong
January 9, Shandong Runfeng Group, one megawatt solar power station and grid ceremony was held in Jining Weishan. This is the first company in Shandong Province and the model grid solar power station is also the country's first privately-owned enterprises to invest in solar PV power plant.
The MW solar photovoltaic power plants with a total installed capacity of 1 MW, a total power of 230 watts use polysilicon solar cell component 4348. Use power of 100 kW power inverter 10 stations and with a tracking system inverters 3 sets. Power annual generation capacity of 1.3 million degrees, can be stable operation for 25 years, saving 11.9 thousand tons of standard coal, 32.4 thousand tons of carbon dioxide emissions. With the world's advanced technology, photovoltaic technology has been research problems "island effect."
Shandong Runfeng Group 1 MW solar power station built power generation, solar power, Shandong Province, achieved a breakthrough in the field of zero for the promotion of new energy industry development in our province will have a positive demonstration effect. This is not only in the region to promote solar PV industry will have a sound and rapid development of positive demonstration effect, but also to speed up the adjustment of energy structure, promote energy-saving emission reduction, achieving sustainable development will play an important role. According to development plan of Shandong Province, to the end of 2011, the province's installed capacity of 20 MW solar power, photovoltaic cell module output reached 500 megawatts, PV industry revenues will reach 35 billion yuan.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn.
January 9, Shandong Runfeng Group, one megawatt solar power station and grid ceremony was held in Jining Weishan. This is the first company in Shandong Province and the model grid solar power station is also the country's first privately-owned enterprises to invest in solar PV power plant.
The MW solar photovoltaic power plants with a total installed capacity of 1 MW, a total power of 230 watts use polysilicon solar cell component 4348. Use power of 100 kW power inverter 10 stations and with a tracking system inverters 3 sets. Power annual generation capacity of 1.3 million degrees, can be stable operation for 25 years, saving 11.9 thousand tons of standard coal, 32.4 thousand tons of carbon dioxide emissions. With the world's advanced technology, photovoltaic technology has been research problems "island effect."
Shandong Runfeng Group 1 MW solar power station built power generation, solar power, Shandong Province, achieved a breakthrough in the field of zero for the promotion of new energy industry development in our province will have a positive demonstration effect. This is not only in the region to promote solar PV industry will have a sound and rapid development of positive demonstration effect, but also to speed up the adjustment of energy structure, promote energy-saving emission reduction, achieving sustainable development will play an important role. According to development plan of Shandong Province, to the end of 2011, the province's installed capacity of 20 MW solar power, photovoltaic cell module output reached 500 megawatts, PV industry revenues will reach 35 billion yuan.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn.
Smart Grid: meter and secondary equipment market, the first to benefit
Smart Grid: meter and secondary equipment market, the first to benefit
Grid due to an increase of "smart" word further deepened with the electronic information industry links to the information industry will bring new opportunity for development. According to experts, the main features include smart grid self-healing, compatible, interactive, optimization, integration, allowing different forms of access to electricity and so on. Its core meaning is to achieve power of information technology, digitization, automation, and interactive technology. The realization of these features requires electronic and information technology support.
Power automation equipment is one of the most critical network equipment, in the smart grid concept, primary equipment and secondary equipment, the difference is slowly reduced, the domestic power equipment companies thus have an unprecedented opportunity.
On the semiconductor industry, power grids, intelligent application of the integrated circuit also put forward higher requirements for Wang Zhihua, deputy director of Institute of Microelectronics, Tsinghua University, said that the smart grid systems to be able to sense overload and can allocate the power to prevent the system failure or to minimize the impact of failure. Smart Grid to use digital technology, including the use of intelligent power consumption meter testing, through the network of sensors and computer system control burst generators, according to consumer demand, production of electrical energy, thereby enhancing transmission efficiency. Smart grid to allow a distributed alternative energy into the grid, which also integrated circuits and semiconductor power devices to provide a market opportunity. Such as wind power, rectifier devices will need to convert alternating current instability in DC, and then convert the power inverter AC power grid can be accepted after the delivery to the power grid to go. The formation of the solar cell power generation DC, the same has to go through before it can convert the power inverter grid. Both the rectifier or the inverter, the core of all power semiconductor devices. The distributed energy in the input grid in the process of measurement will have to rely on integrated circuits.
The reporters found, IT giants and semiconductor makers have been an active part in the smart power grid. Intel China's Ministry of Industry Co-operation and high-end solutions for enterprise customers in China Region Manager, Mao Halinen, told reporters that Intel has worked with the State Grid Corporation has established a joint laboratory, integrated high-performance computing and embedded technology, using Intel-based server, network modeling and simulation, to achieve automation of network isolation and power stations. NXP, Greater China director of marketing for multi-market products, said Jin Yujie, NXP Semiconductors product line to meet the diverse areas of power system needs of a variety of electronic components present, their products are mainly used in electric power terminal, a negative control, set copy and single-phase / three phase energy meters.
Experts believe that, from the power plant to the grid, to the substation, to the user, through the Intelligent Gateway constitute the smart grid will form a value chain. The observation of the current development trend, smart meters and the second device will be the value chain in this part of the first to benefit in the U.S. and some European countries, smart meter configuration is referred to the first step of development. It is reported that China also plans to next year on 40 million smart meters, while the national power grid has also recently begun tendering for smart meters. Freescale, NXP and other semiconductor companies have launched this year, a number of new smart metering products and solutions to enhance the promotion of this market.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn.
Grid due to an increase of "smart" word further deepened with the electronic information industry links to the information industry will bring new opportunity for development. According to experts, the main features include smart grid self-healing, compatible, interactive, optimization, integration, allowing different forms of access to electricity and so on. Its core meaning is to achieve power of information technology, digitization, automation, and interactive technology. The realization of these features requires electronic and information technology support.
Power automation equipment is one of the most critical network equipment, in the smart grid concept, primary equipment and secondary equipment, the difference is slowly reduced, the domestic power equipment companies thus have an unprecedented opportunity.
On the semiconductor industry, power grids, intelligent application of the integrated circuit also put forward higher requirements for Wang Zhihua, deputy director of Institute of Microelectronics, Tsinghua University, said that the smart grid systems to be able to sense overload and can allocate the power to prevent the system failure or to minimize the impact of failure. Smart Grid to use digital technology, including the use of intelligent power consumption meter testing, through the network of sensors and computer system control burst generators, according to consumer demand, production of electrical energy, thereby enhancing transmission efficiency. Smart grid to allow a distributed alternative energy into the grid, which also integrated circuits and semiconductor power devices to provide a market opportunity. Such as wind power, rectifier devices will need to convert alternating current instability in DC, and then convert the power inverter AC power grid can be accepted after the delivery to the power grid to go. The formation of the solar cell power generation DC, the same has to go through before it can convert the power inverter grid. Both the rectifier or the inverter, the core of all power semiconductor devices. The distributed energy in the input grid in the process of measurement will have to rely on integrated circuits.
The reporters found, IT giants and semiconductor makers have been an active part in the smart power grid. Intel China's Ministry of Industry Co-operation and high-end solutions for enterprise customers in China Region Manager, Mao Halinen, told reporters that Intel has worked with the State Grid Corporation has established a joint laboratory, integrated high-performance computing and embedded technology, using Intel-based server, network modeling and simulation, to achieve automation of network isolation and power stations. NXP, Greater China director of marketing for multi-market products, said Jin Yujie, NXP Semiconductors product line to meet the diverse areas of power system needs of a variety of electronic components present, their products are mainly used in electric power terminal, a negative control, set copy and single-phase / three phase energy meters.
Experts believe that, from the power plant to the grid, to the substation, to the user, through the Intelligent Gateway constitute the smart grid will form a value chain. The observation of the current development trend, smart meters and the second device will be the value chain in this part of the first to benefit in the U.S. and some European countries, smart meter configuration is referred to the first step of development. It is reported that China also plans to next year on 40 million smart meters, while the national power grid has also recently begun tendering for smart meters. Freescale, NXP and other semiconductor companies have launched this year, a number of new smart metering products and solutions to enhance the promotion of this market.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn.
2010年1月19日星期二
China's largest solar power station puts into operation in Xuzhou
China's largest solar power station puts into operation in Xuzhou
December 30, the traditional "coal capital" in Xuzhou, Jiangsu known Adds a new crack Power: The total investment is 420 million yuan, the installed capacity of 20MW photovoltaic power plant in Xuzhou co-Xin on the ground successfully put into operation in Xuzhou. This is the largest solar power plant installed capacity to date, but also the construction of photovoltaic industry in Jiangsu Province demonstration project.
Xuzhou Society Xin Co., Ltd. 20MW photovoltaic solar power project, is the second occupying the first seat in the National polysilicon production capacity in Jiangsu can produce 18,000 tons of polysilicon project after another masterpiece of new energy sources, but also in revitalizing the old industrial bases in Xuzhou in the introduction of the four 100 billion industry, an important member of the organizing groups of industries. The station is located in Xuzhou city, in Jiawang District Castle Peak Springs, relying on an abandoned hill cock Shannan built, occupying nearly 700 acres of mountains, light a large area lighting effect is good. The project by the Hong Kong Association Xin Poly Energy Holdings Co., Ltd. a subsidiary of Jiangsu to invest in Silicon Industry Technology Development Co., Ltd., Central PV Systems Ltd design and construction. Approved by the Jiangsu Provincial Power Company, December 30, and officially as a whole grid.
20MW photovoltaic power plant in Xuzhou Society Xin uses flat-plate crystalline silicon PV modules as a photoelectric conversion device, through the AC-DC power inverter the current is converted to comply with the conditions of alternating current grid, the final step-up into the high-voltage power grid. In addition to the main inverter, single-axis tracking systems, transformers, switch cabinet and other key equipment, and battery plate components, the power generation system also has complete computer monitoring devices and lightning protection and earthing installations and other important facilities to ensure that power generation Station safe and orderly operation, including design and technology applications have a number belonging to China's large-scale photovoltaic power generation applications, the important technical innovation in China to fill a number of large-scale grid-connected photovoltaic power station construction field engineering and research gaps, shortening the the gap with the world advanced level. Design an operational lifetime of 25 years, its initial system efficiency of 80%, according to local meteorological conditions, annual electricity use of the number of hours is about 1300 hours, the annual average generating capacity of about 26 million kwh. Project annual savings of 7550 tons of standard coal, reduce emissions of greenhouse gases carbon dioxide, about 2 million tons of air pollution gases is about 150 tons of sulfur dioxide, nitrogen dioxide, about 50 tons, water conservation will be accompanied by a corresponding reduction in wastewater and cooling water water and other environmental pollution.
According to statistics, China has been and network-megawatt photovoltaic power plant for electricity generation, including Shanghai Chongming 1MW, Shanghai Lingang New City 1.2MW, Hangzhou, Zhejiang 2MW rooftop photovoltaic power stations, Shizuishan 10MW, Ningxia, the sun hill 2.5MW, Huadian Ningdong 2MW and so on. Economic and environmental benefits as a significant national demonstration project of new energy, Xuzhou Society Xin 20MW photovoltaic power plant put into operation as a whole, marking the completion of Poly HS Xin solar energy industry chain from upstream to downstream manufacture of polysilicon and silicon photovoltaic power generation extension to form upper and lower reaches of the solar energy industry chain, the perfect combination, but also shows that China PV industry in new breakthroughs on the scale and grade.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn .
December 30, the traditional "coal capital" in Xuzhou, Jiangsu known Adds a new crack Power: The total investment is 420 million yuan, the installed capacity of 20MW photovoltaic power plant in Xuzhou co-Xin on the ground successfully put into operation in Xuzhou. This is the largest solar power plant installed capacity to date, but also the construction of photovoltaic industry in Jiangsu Province demonstration project.
Xuzhou Society Xin Co., Ltd. 20MW photovoltaic solar power project, is the second occupying the first seat in the National polysilicon production capacity in Jiangsu can produce 18,000 tons of polysilicon project after another masterpiece of new energy sources, but also in revitalizing the old industrial bases in Xuzhou in the introduction of the four 100 billion industry, an important member of the organizing groups of industries. The station is located in Xuzhou city, in Jiawang District Castle Peak Springs, relying on an abandoned hill cock Shannan built, occupying nearly 700 acres of mountains, light a large area lighting effect is good. The project by the Hong Kong Association Xin Poly Energy Holdings Co., Ltd. a subsidiary of Jiangsu to invest in Silicon Industry Technology Development Co., Ltd., Central PV Systems Ltd design and construction. Approved by the Jiangsu Provincial Power Company, December 30, and officially as a whole grid.
20MW photovoltaic power plant in Xuzhou Society Xin uses flat-plate crystalline silicon PV modules as a photoelectric conversion device, through the AC-DC power inverter the current is converted to comply with the conditions of alternating current grid, the final step-up into the high-voltage power grid. In addition to the main inverter, single-axis tracking systems, transformers, switch cabinet and other key equipment, and battery plate components, the power generation system also has complete computer monitoring devices and lightning protection and earthing installations and other important facilities to ensure that power generation Station safe and orderly operation, including design and technology applications have a number belonging to China's large-scale photovoltaic power generation applications, the important technical innovation in China to fill a number of large-scale grid-connected photovoltaic power station construction field engineering and research gaps, shortening the the gap with the world advanced level. Design an operational lifetime of 25 years, its initial system efficiency of 80%, according to local meteorological conditions, annual electricity use of the number of hours is about 1300 hours, the annual average generating capacity of about 26 million kwh. Project annual savings of 7550 tons of standard coal, reduce emissions of greenhouse gases carbon dioxide, about 2 million tons of air pollution gases is about 150 tons of sulfur dioxide, nitrogen dioxide, about 50 tons, water conservation will be accompanied by a corresponding reduction in wastewater and cooling water water and other environmental pollution.
According to statistics, China has been and network-megawatt photovoltaic power plant for electricity generation, including Shanghai Chongming 1MW, Shanghai Lingang New City 1.2MW, Hangzhou, Zhejiang 2MW rooftop photovoltaic power stations, Shizuishan 10MW, Ningxia, the sun hill 2.5MW, Huadian Ningdong 2MW and so on. Economic and environmental benefits as a significant national demonstration project of new energy, Xuzhou Society Xin 20MW photovoltaic power plant put into operation as a whole, marking the completion of Poly HS Xin solar energy industry chain from upstream to downstream manufacture of polysilicon and silicon photovoltaic power generation extension to form upper and lower reaches of the solar energy industry chain, the perfect combination, but also shows that China PV industry in new breakthroughs on the scale and grade.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn .
Ontario 2 MW solar power plant is ready to commence
Ontario 2 MW solar power plant is ready to commence
Referred to the Canadian market, the growth potential of solar power will be built in Newcastle in Ontario a 2-megawatt solar farm developers said they would begin construction in the second quarter of 2010, it is expected to provide 3 MW and above solar energy.
Toronto, about 80 km east of the planned solar power park in Newcastle, once completed by the end of this year, will be one of Canada's largest solar power plant.
Solar power garden covers an area of 10 acres, the floor will be located in 8900 solar modules, and facing the sun.
The developer of Day4 Energy of Canada Limited and the Canadian company said Hybridine power systems, solar electric power park will generate enough electricity supply to 360 families for a year.
"This supply agreement is the right of Canada and the entire North American market increased attention to results. This is also in this market, the emerging business opportunities in an increasing number of indicators," Day4 Energy Co., Ltd., said George Rubin, president, said.
In addition to the supply of solar power park module Newcastle, Day4 Energy Limited has signed a contract with Hybridine power to provide 3.1 megawatts of solar panels, this is the future of the surrounding area for the Toronto projects.
Toronto, the project details were not public, but the two companies said they will be built in the industrial and commercial flat top array.
Newcastle project will provide solar system power inverters Hybridine the U.S. OTC market transactions Atlantic Wind and solar energy company acquired in June 2009. Of its business is also developing solar energy projects.
Hybridine said that his conversion technology allows electricity from the sun through the family's power is compatible with its more traditional inverters provide up to 30% more kilowatt-hours of electricity.
Toronto, Ontario to become a Canadian renewable energy development a positive one of the provinces on February 1 launched a "green energy bill" in order to solve the local regulations and by reducing red tape and regulations to facilitate right wind turbines, solar and bio-fuel electric power park carried out construction projects.
It is estimated that Ontario's green economy to expand over the next three years, investments will create 50000 direct and indirect employment opportunities.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn .
Referred to the Canadian market, the growth potential of solar power will be built in Newcastle in Ontario a 2-megawatt solar farm developers said they would begin construction in the second quarter of 2010, it is expected to provide 3 MW and above solar energy.
Toronto, about 80 km east of the planned solar power park in Newcastle, once completed by the end of this year, will be one of Canada's largest solar power plant.
Solar power garden covers an area of 10 acres, the floor will be located in 8900 solar modules, and facing the sun.
The developer of Day4 Energy of Canada Limited and the Canadian company said Hybridine power systems, solar electric power park will generate enough electricity supply to 360 families for a year.
"This supply agreement is the right of Canada and the entire North American market increased attention to results. This is also in this market, the emerging business opportunities in an increasing number of indicators," Day4 Energy Co., Ltd., said George Rubin, president, said.
In addition to the supply of solar power park module Newcastle, Day4 Energy Limited has signed a contract with Hybridine power to provide 3.1 megawatts of solar panels, this is the future of the surrounding area for the Toronto projects.
Toronto, the project details were not public, but the two companies said they will be built in the industrial and commercial flat top array.
Newcastle project will provide solar system power inverters Hybridine the U.S. OTC market transactions Atlantic Wind and solar energy company acquired in June 2009. Of its business is also developing solar energy projects.
Hybridine said that his conversion technology allows electricity from the sun through the family's power is compatible with its more traditional inverters provide up to 30% more kilowatt-hours of electricity.
Toronto, Ontario to become a Canadian renewable energy development a positive one of the provinces on February 1 launched a "green energy bill" in order to solve the local regulations and by reducing red tape and regulations to facilitate right wind turbines, solar and bio-fuel electric power park carried out construction projects.
It is estimated that Ontario's green economy to expand over the next three years, investments will create 50000 direct and indirect employment opportunities.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn .
Induction heating power supply and its technical (part 2)
Induction heating power supply and its technical (part 2)
From the circuit point of view induction heating power supply of large capacity, high-capacity technology can be divided into two categories: one category is the device series and parallel; the other is multi-bridge power supply or more series and parallel. In the device and parallel manner, we must seriously address the issue of serial devices and parallel devices are pressure mean flow problem, due to the device manufacturing process and discrete parameters, limiting the device's string, the number of parallel and series and parallel the number of The more the worse the reliability. More than one power supply and parallel technology is in the device and parallel technology to make further capacity on the basis of an effective means by means of a reliable power supply and parallel technologies, stand-alone capacity of appropriate cases, simply by series and parallel operation mode to be high-capacity devices, each device is a stand-alone unit (or a module).
Induction Heating Power Inverter main shunt inverter and series inverter, series inverter can be equivalent to a low-impedance voltage source, when the two voltage sources in parallel with each other between the amplitude, phase and frequency fluctuations will result in different or large circulation, as well as inverter device's current serious imbalance, therefore, the existence and machine inverter series expansion difficult; while the parallel power inverter, inverter DC input large reactor could serve as the parallel inverter link between the current buffer, allowing input AG / DG or DG / DG links have enough time to correct the DC bias current to achieve multi-machine parallel expansion, transistor-based ultra-audio, high-frequency current Multi-inverter with parallel structures, parallel inverter easy modular, high capacity is one of the main reasons.
Induction heating power supply wide range of load objects, while the power inverter and the load is an organic whole, and generally use a matching transformer to connect the power and load sensors, high-frequency, VHF power supply to the matching transformer windings from the magnetic material structure is further optimized and improved at the same time, from the circuit topology can be replaced by two with three passive components, passive components, to cancel the transformer to achieve high efficiency, low-cost match.
Induction heating power supplies, thyristor, transistor and tube-type in the country can produce. Thyristor Power has produced for many years. Present IGBT power because of their advantages over the more users adopt. MOSFET power supply, high efficiency, low voltage, but higher prices are gradually replacing the vacuum tube high frequency power supply. Portable mini-high-frequency power supply due to cheap, convenient and widely used in China, and even access to foreign markets.
Ultra-high frequency power (27.12MHz), used to rely on imports, and now there are at least two companies have domestic production to solve the blades, saws and other special technology needs.
Induction Heat Treatment Production Line Automation with the degree of control and power the high reliability requirements increase, we must strengthen the heating process complete device development. At the same time intelligent control of induction heating system, the forward direction, with a computer, intelligent interface, remote control and automatic fault diagnosis and other control performance of induction heating power supply system is becoming the next generation of development goals.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn .
From the circuit point of view induction heating power supply of large capacity, high-capacity technology can be divided into two categories: one category is the device series and parallel; the other is multi-bridge power supply or more series and parallel. In the device and parallel manner, we must seriously address the issue of serial devices and parallel devices are pressure mean flow problem, due to the device manufacturing process and discrete parameters, limiting the device's string, the number of parallel and series and parallel the number of The more the worse the reliability. More than one power supply and parallel technology is in the device and parallel technology to make further capacity on the basis of an effective means by means of a reliable power supply and parallel technologies, stand-alone capacity of appropriate cases, simply by series and parallel operation mode to be high-capacity devices, each device is a stand-alone unit (or a module).
Induction Heating Power Inverter main shunt inverter and series inverter, series inverter can be equivalent to a low-impedance voltage source, when the two voltage sources in parallel with each other between the amplitude, phase and frequency fluctuations will result in different or large circulation, as well as inverter device's current serious imbalance, therefore, the existence and machine inverter series expansion difficult; while the parallel power inverter, inverter DC input large reactor could serve as the parallel inverter link between the current buffer, allowing input AG / DG or DG / DG links have enough time to correct the DC bias current to achieve multi-machine parallel expansion, transistor-based ultra-audio, high-frequency current Multi-inverter with parallel structures, parallel inverter easy modular, high capacity is one of the main reasons.
Induction heating power supply wide range of load objects, while the power inverter and the load is an organic whole, and generally use a matching transformer to connect the power and load sensors, high-frequency, VHF power supply to the matching transformer windings from the magnetic material structure is further optimized and improved at the same time, from the circuit topology can be replaced by two with three passive components, passive components, to cancel the transformer to achieve high efficiency, low-cost match.
Induction heating power supplies, thyristor, transistor and tube-type in the country can produce. Thyristor Power has produced for many years. Present IGBT power because of their advantages over the more users adopt. MOSFET power supply, high efficiency, low voltage, but higher prices are gradually replacing the vacuum tube high frequency power supply. Portable mini-high-frequency power supply due to cheap, convenient and widely used in China, and even access to foreign markets.
Ultra-high frequency power (27.12MHz), used to rely on imports, and now there are at least two companies have domestic production to solve the blades, saws and other special technology needs.
Induction Heat Treatment Production Line Automation with the degree of control and power the high reliability requirements increase, we must strengthen the heating process complete device development. At the same time intelligent control of induction heating system, the forward direction, with a computer, intelligent interface, remote control and automatic fault diagnosis and other control performance of induction heating power supply system is becoming the next generation of development goals.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn .
Induction heating power supply and its technical (part 1)
Induction heating power supply and its technical (part 1)
Thyristor IF in power in power generator to replace the machine. The 20th century, the early 90s, the domestic thyristor power plants have sprouted and flourished everywhere, through the survival of the fittest competition, and now production plant has tended to stabilize. Thyristor Power now has the power to the IGBT transistor development, and tubes will be developed into a high-frequency power MOSFET transistors, transistors ultra-portable audio, high-frequency power supply market is extremely competitive, its future who will also be of high quality, technological level Gao, who will be able to gain a firm foothold.
Domestic intermediate frequency power supply are currently used parallel resonant power inverter structure. Therefore, greater capacity in research and development of parallel inverter frequency power supply at the same time, the development of simple structure, easy-to-frequent start of the series inverter frequency power supply is the area of medium-frequency induction heating device problems to be solved, especially in the melting, casting application , the series inverter easy to achieve full operating conditions constant power output (t help reduce the power consumption) and a Multi-load power distribution control, more worthy of popularization.
In the ultra-Audio (10 ~ 100kHz) within its own thyristor switching characteristics due to parameters such as restrictions to the development of the power of the band brings a great deal of technical difficulty. Although 80 years of Zhejiang University multiplier circuit using thyristor developed a 50kW / 50kHz ultra-audio power supply, was developed using the time division circuit of thyristor super-30kHz audio power, but because of the dual-resonant circuit multiplier circuit coupled to the load was non-linear, time-varying heat load parameters and parameter matching resonant circuit debugging very complex, and time division circuit to control and main circuit structure of complex, low utilization rate of power inverter control, it has not been well popularized.
70 to 80 early, it will be integrated in modern semiconductor micro-processing technology combined with the power semiconductor technology, have developed a large number of full-controlled power electronic semiconductor devices (GTR, MOSFET, SIT, SITH, and MCT, etc.), for all solid-state super-audio , high-frequency power supply development has laid a solid foundation.
In the high-frequency (100kHz and above) band, is currently abroad, is in the power supply from the traditional tube-based all solid-state power supply to the transistor transition period. Japan, some companies use SIT, the power level of 80 reached late 1000kW, 200kHz, 400kW, 400kHz.
In Europe and the United States, due to the presence of high-state SIT loss (SIT working in non-saturated zone) and other defects to high-frequency MOSFET-based power devices. With MOSFET power devices and modular, high capacity technology, MOSFET high-frequency induction heating power supply capacity has been rapid development. Spain's current-mode MOSFET using induction heating power supply manufacturers, up to 600kW, 400kHz, Germany, developed in 1989, current-mode MOSFET Induction Heating Power Supply, up to 480kW, 50 ~ 200kHz, Belgium I nductoEiphiac produced by current-mode MOSFET Induction Heating Power Supply levels can be up to 1000kW, 15 ~ 600kHz. Zhejiang University in the 90s developed 20kW, 300kHz MOSFET high-frequency power supply, has been successfully applied to the surface heat treatment of small tools and aircraft turbine blade thermal stress assessment.
At present, the induction heating power supply in the medium frequency band, used mainly thyristor, VHF band, used mainly IGBT, while in high-frequency band, due to the presence of high conduction losses SIT and other defects, a major international development MOSFET power supply. Although the use of induction heating power resonant inverter will help to achieve soft-switching power devices, but the induction heating power supply is usually larger on the power devices, passive components, cables, wiring, grounding and shielding, etc. are a number of special requirements. Therefore, to achieve high-frequency induction heating power supply of basic technology for many applications still need to be further explored, especially in the new high-frequency high-power devices (such as the MCT, IGBT power devices, and SIT, etc.) come out, will further promote the development of the high-frequency induction heating power supply.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn .
Thyristor IF in power in power generator to replace the machine. The 20th century, the early 90s, the domestic thyristor power plants have sprouted and flourished everywhere, through the survival of the fittest competition, and now production plant has tended to stabilize. Thyristor Power now has the power to the IGBT transistor development, and tubes will be developed into a high-frequency power MOSFET transistors, transistors ultra-portable audio, high-frequency power supply market is extremely competitive, its future who will also be of high quality, technological level Gao, who will be able to gain a firm foothold.
Domestic intermediate frequency power supply are currently used parallel resonant power inverter structure. Therefore, greater capacity in research and development of parallel inverter frequency power supply at the same time, the development of simple structure, easy-to-frequent start of the series inverter frequency power supply is the area of medium-frequency induction heating device problems to be solved, especially in the melting, casting application , the series inverter easy to achieve full operating conditions constant power output (t help reduce the power consumption) and a Multi-load power distribution control, more worthy of popularization.
In the ultra-Audio (10 ~ 100kHz) within its own thyristor switching characteristics due to parameters such as restrictions to the development of the power of the band brings a great deal of technical difficulty. Although 80 years of Zhejiang University multiplier circuit using thyristor developed a 50kW / 50kHz ultra-audio power supply, was developed using the time division circuit of thyristor super-30kHz audio power, but because of the dual-resonant circuit multiplier circuit coupled to the load was non-linear, time-varying heat load parameters and parameter matching resonant circuit debugging very complex, and time division circuit to control and main circuit structure of complex, low utilization rate of power inverter control, it has not been well popularized.
70 to 80 early, it will be integrated in modern semiconductor micro-processing technology combined with the power semiconductor technology, have developed a large number of full-controlled power electronic semiconductor devices (GTR, MOSFET, SIT, SITH, and MCT, etc.), for all solid-state super-audio , high-frequency power supply development has laid a solid foundation.
In the high-frequency (100kHz and above) band, is currently abroad, is in the power supply from the traditional tube-based all solid-state power supply to the transistor transition period. Japan, some companies use SIT, the power level of 80 reached late 1000kW, 200kHz, 400kW, 400kHz.
In Europe and the United States, due to the presence of high-state SIT loss (SIT working in non-saturated zone) and other defects to high-frequency MOSFET-based power devices. With MOSFET power devices and modular, high capacity technology, MOSFET high-frequency induction heating power supply capacity has been rapid development. Spain's current-mode MOSFET using induction heating power supply manufacturers, up to 600kW, 400kHz, Germany, developed in 1989, current-mode MOSFET Induction Heating Power Supply, up to 480kW, 50 ~ 200kHz, Belgium I nductoEiphiac produced by current-mode MOSFET Induction Heating Power Supply levels can be up to 1000kW, 15 ~ 600kHz. Zhejiang University in the 90s developed 20kW, 300kHz MOSFET high-frequency power supply, has been successfully applied to the surface heat treatment of small tools and aircraft turbine blade thermal stress assessment.
At present, the induction heating power supply in the medium frequency band, used mainly thyristor, VHF band, used mainly IGBT, while in high-frequency band, due to the presence of high conduction losses SIT and other defects, a major international development MOSFET power supply. Although the use of induction heating power resonant inverter will help to achieve soft-switching power devices, but the induction heating power supply is usually larger on the power devices, passive components, cables, wiring, grounding and shielding, etc. are a number of special requirements. Therefore, to achieve high-frequency induction heating power supply of basic technology for many applications still need to be further explored, especially in the new high-frequency high-power devices (such as the MCT, IGBT power devices, and SIT, etc.) come out, will further promote the development of the high-frequency induction heating power supply.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn .
2010年1月16日星期六
The prospects of PV inverter business are very good
The prospects of PV inverter business are very good
"Now we are fully booked through April of next year, but also in many orders do not take the case." Shanghai Air China China Aviation Industry Rui Power Technology Co., Ltd. (hereinafter referred to as the "Shanghai Airlines sharp"), President Chen Shuang-ping recently told this reporter .
As the only one able to achieve small-scale photovoltaic power inverter quantities for export enterprises, Shanghai Air-Rui become a full recovery of the current round of photovoltaic industry, yet another instance of corroboration.
CHEN Shuang-ping told this reporter that in August this year, the PV market, signs of recovery had already begun to appear; in October, the large number of orders are beginning to like an avalanche, the company also started at full capacity.
Newspaper reporter in Shanghai in Spring Road, Minhang District, Shanghai Air-Rui factories to see, as the cassette-sized inverter has been filled with workshops, are waiting for "baking machine" after the sealing ship out of the -- The so-called "roast machine" is a stress test, after this Road "off", the inverter will be a fundamental guarantee of quality.
According to Chen double-Ping, previously held in Los Angeles, an international exhibition on photovoltaic, PV system integrators in many overseas contractors are utterance: "If you can get the certification, Take us how much you produce."
"Of course, only the first step to get certified, but also mass production and stable quality. This is why China is currently no other companies can export the reasons for PV inverters." He said.
JIANG Hai-Jiang told reporters in the interview also revealed that Shanghai Airlines plans to sharply next year, to promote the domestic construction of several types of demonstration projects in order to extend the industrial chain.
"Despite the current PV power inverter market, profit margins fairly normal, but does not rule out the future, as competition increased, profit margins may decline. Therefore, we have to study as soon as possible inverter market space where outside." JIANG Hai-Jiang said.
In his view, most want to see is the Chinese market together, "Although China's per capita emissions is not high, but '6% share of global GDP and 21% of total global emissions of' such figures, the emissions reduction Or is to be promoted. "
"The market definitely a great future." CHEN Shuang-ping told reporters that there are many areas in north China in remote location, most suitable for off-grid photovoltaic power generation, and each plant will need to use off-grid inverter. Once the countries in the grid-connected solar breakthrough, then the inverter will surge in demand.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn .
"Now we are fully booked through April of next year, but also in many orders do not take the case." Shanghai Air China China Aviation Industry Rui Power Technology Co., Ltd. (hereinafter referred to as the "Shanghai Airlines sharp"), President Chen Shuang-ping recently told this reporter .
As the only one able to achieve small-scale photovoltaic power inverter quantities for export enterprises, Shanghai Air-Rui become a full recovery of the current round of photovoltaic industry, yet another instance of corroboration.
CHEN Shuang-ping told this reporter that in August this year, the PV market, signs of recovery had already begun to appear; in October, the large number of orders are beginning to like an avalanche, the company also started at full capacity.
Newspaper reporter in Shanghai in Spring Road, Minhang District, Shanghai Air-Rui factories to see, as the cassette-sized inverter has been filled with workshops, are waiting for "baking machine" after the sealing ship out of the -- The so-called "roast machine" is a stress test, after this Road "off", the inverter will be a fundamental guarantee of quality.
According to Chen double-Ping, previously held in Los Angeles, an international exhibition on photovoltaic, PV system integrators in many overseas contractors are utterance: "If you can get the certification, Take us how much you produce."
"Of course, only the first step to get certified, but also mass production and stable quality. This is why China is currently no other companies can export the reasons for PV inverters." He said.
JIANG Hai-Jiang told reporters in the interview also revealed that Shanghai Airlines plans to sharply next year, to promote the domestic construction of several types of demonstration projects in order to extend the industrial chain.
"Despite the current PV power inverter market, profit margins fairly normal, but does not rule out the future, as competition increased, profit margins may decline. Therefore, we have to study as soon as possible inverter market space where outside." JIANG Hai-Jiang said.
In his view, most want to see is the Chinese market together, "Although China's per capita emissions is not high, but '6% share of global GDP and 21% of total global emissions of' such figures, the emissions reduction Or is to be promoted. "
"The market definitely a great future." CHEN Shuang-ping told reporters that there are many areas in north China in remote location, most suitable for off-grid photovoltaic power generation, and each plant will need to use off-grid inverter. Once the countries in the grid-connected solar breakthrough, then the inverter will surge in demand.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn .
Eaton’s and Santak’s products have been favored by the IT channel
Eaton’s and Santak’s products have been favored by the IT channel
In the global economic crisis on the domestic economic environment and the IT market had a tremendous impact in the context, there are many, many best-selling products, green products and innovative products in the contrarian, the leading trend driving the market development. Recently, the domestic market share leader in Eaton's Eaton 9395 series UPS and the UPS Santak Castle EX series of channels, both become the most popular IT products.
Eaton 9395 UPS for its high-precision positioning, grasp market development and user needs as well as the emphasis on channel support and training by the industry is widely recognized as highly influential best-selling brands. Santak Castle EX UPS will be green, energy-saving concept of in-depth into the promotion, development and services, saving resources, while improving product availability and reduce the user's use of the cost of popular channels for praise.
Eaton 9395 UPS
As Eaton's major product lines, one of 9395 in a variety of load conditions to ensure the efficiency of light-load conditions remain high. Multiple redundant power supplies and redundant fans Logic effectively reduces the internal temperature, 32-bit full digital DSP control system, high-reliability design, flexible and redundant expansion into the-line associated with the construction accounted for the reduction of space, as well as all of UPM modules share the characteristics of a group of cells form the perfect unity of the green and efficient. With the arrival of a new server load times, equipment, power factor improvement in load power density increases, dual power input, etc. made to the UPS demand more, while the Eaton 9395 increase in effective power, size and weight of the reduced harmonic pollution reduction is very good to meet new load requirements.
Chart Rationale: Eaton 9395 could be described as "epoch-making UPS". It has a new type of IGBT, symmetric rectifier and inverter, interchangeable power module, as well as less electricity consumption. It can be said Eaton 9395 as the market for high-end products with outstanding performance.
Santak Castle EX UPS
Castle EX used IGBT converters and PWM power inverter technology, lightweight, low noise, right UPS overload, short circuit, the battery voltage is too low, UPS temperature is too high a comprehensive protection. Through effective temperature detection and over-temperature protection, intelligent charge-discharge management, to extend the life of the machine to protect the power system security. Its availability is a measure of UPS systems up and running within a unit time the proportion of the higher availability, on behalf of customers within a unit time the greater the value created. Parallel redundant design with NX up to eight units can be a direct parallel with UPS to provide high availability power inverter supply redundancy scheme, while without interrupting system operation, can be set with the maintenance. In addition, its use of RS232 communication interface and RS232 communication lines, according to application needs to add SNMP, such as communication boards, to enable UPS to achieve a high degree of intelligence.
Chart reasons: Santak Castle EX as a new generation of power management experts in the Castle series UPS to maintain the original design concepts and production processes, the right features and performance of the original machines were fully upgraded, so that it has more adaptability and reliability. At the same time, through a rich and full of accessories design, interpretation of "Green Power Energy Pioneer" concept.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn .
In the global economic crisis on the domestic economic environment and the IT market had a tremendous impact in the context, there are many, many best-selling products, green products and innovative products in the contrarian, the leading trend driving the market development. Recently, the domestic market share leader in Eaton's Eaton 9395 series UPS and the UPS Santak Castle EX series of channels, both become the most popular IT products.
Eaton 9395 UPS for its high-precision positioning, grasp market development and user needs as well as the emphasis on channel support and training by the industry is widely recognized as highly influential best-selling brands. Santak Castle EX UPS will be green, energy-saving concept of in-depth into the promotion, development and services, saving resources, while improving product availability and reduce the user's use of the cost of popular channels for praise.
Eaton 9395 UPS
As Eaton's major product lines, one of 9395 in a variety of load conditions to ensure the efficiency of light-load conditions remain high. Multiple redundant power supplies and redundant fans Logic effectively reduces the internal temperature, 32-bit full digital DSP control system, high-reliability design, flexible and redundant expansion into the-line associated with the construction accounted for the reduction of space, as well as all of UPM modules share the characteristics of a group of cells form the perfect unity of the green and efficient. With the arrival of a new server load times, equipment, power factor improvement in load power density increases, dual power input, etc. made to the UPS demand more, while the Eaton 9395 increase in effective power, size and weight of the reduced harmonic pollution reduction is very good to meet new load requirements.
Chart Rationale: Eaton 9395 could be described as "epoch-making UPS". It has a new type of IGBT, symmetric rectifier and inverter, interchangeable power module, as well as less electricity consumption. It can be said Eaton 9395 as the market for high-end products with outstanding performance.
Santak Castle EX UPS
Castle EX used IGBT converters and PWM power inverter technology, lightweight, low noise, right UPS overload, short circuit, the battery voltage is too low, UPS temperature is too high a comprehensive protection. Through effective temperature detection and over-temperature protection, intelligent charge-discharge management, to extend the life of the machine to protect the power system security. Its availability is a measure of UPS systems up and running within a unit time the proportion of the higher availability, on behalf of customers within a unit time the greater the value created. Parallel redundant design with NX up to eight units can be a direct parallel with UPS to provide high availability power inverter supply redundancy scheme, while without interrupting system operation, can be set with the maintenance. In addition, its use of RS232 communication interface and RS232 communication lines, according to application needs to add SNMP, such as communication boards, to enable UPS to achieve a high degree of intelligence.
Chart reasons: Santak Castle EX as a new generation of power management experts in the Castle series UPS to maintain the original design concepts and production processes, the right features and performance of the original machines were fully upgraded, so that it has more adaptability and reliability. At the same time, through a rich and full of accessories design, interpretation of "Green Power Energy Pioneer" concept.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn .
2010年1月15日星期五
An Essay on UPS (part 2)
An Essay on UPS (part 2)
System hardware design
The program is designed to use TMS320F28335 microcontroller circuit UPS system control panel. The system is composed of bus voltage detection circuit module, amplitude detection circuit module, peak current protection circuit module, auxiliary power supply monitoring circuit module, open, shut down circuit module, the voltage detection circuit module, PWM generating circuit module, relay control circuit module, external expansion memory modules as well as the peak-ming generating circuit composed of modules.
Bus Voltage Detection Module
Bus voltage detection circuit module shown in Figure 2. Partial pressure + BUS voltage after the RC filter and sent to DSP by the AD converter pin ADCINA2. After partial pressure-BUS voltage through the power inverter, the RC filter sent to the DSP via the AD converter pin ADCINA3.
Amplitude detection circuit module
Amplitude detection circuit shown in Figure 3, it is used power inverter output voltage, mains input voltage, load current amplitude detection. The circuit uses a time when one-way active-precision detector to achieve, using active-precision detector is designed to ensure the output from the detector received unipolar signal amplitude is always associated with sine wave input to the detector the amplitude of the signal maintained a strict linear relationship between the general diode detectors to eliminate the small-signal input non-linear distortion that may arise.
Peak current protection circuit module
Peak current protection circuit shown in Figure 4, the power output of power supply through the UPS board current transformer, with its current size of the form of voltage signals through the signal amplifier to go after the three columns. Amplitude detection circuit all the way through, sent to DSP-ADCINA0 pin; all the way through the current zero-crossing detection circuit, the DSP sent to the GPIO75 pin; the other way through the overload, short circuit protection. When the load overload or short circuit, PWM_OFF into a low-level signals, it will immediately shut down the required two-way inverter PWM wave output, the same time the system switches to bypass DSP mode, play a quick protection.
Results
In the experiment, using the oscilloscope detect steady state inverter output voltage tracking voltage AC power waveform, the results we can see from the inverter system can be basically free of static error tracking. Grid sudden power down, the system switches to protect waveforms, switching time <10ms, indicating that the UPS power grid failure detection speed, switching time is short; the exchange of power grid voltage <190V, when, UPS converts the output from the power grid inverter for the load electrical waveform, switching voltage waveform during the small fluctuation. Inverter output voltage distortion is small, switching time <10ms, UPS output voltage when sudden load increases the dynamic response waveform shows the output voltage fluctuation is small, recovery time <40ms, fast dynamic response to meet the stability and dynamic performance requirements.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn .
System hardware design
The program is designed to use TMS320F28335 microcontroller circuit UPS system control panel. The system is composed of bus voltage detection circuit module, amplitude detection circuit module, peak current protection circuit module, auxiliary power supply monitoring circuit module, open, shut down circuit module, the voltage detection circuit module, PWM generating circuit module, relay control circuit module, external expansion memory modules as well as the peak-ming generating circuit composed of modules.
Bus Voltage Detection Module
Bus voltage detection circuit module shown in Figure 2. Partial pressure + BUS voltage after the RC filter and sent to DSP by the AD converter pin ADCINA2. After partial pressure-BUS voltage through the power inverter, the RC filter sent to the DSP via the AD converter pin ADCINA3.
Amplitude detection circuit module
Amplitude detection circuit shown in Figure 3, it is used power inverter output voltage, mains input voltage, load current amplitude detection. The circuit uses a time when one-way active-precision detector to achieve, using active-precision detector is designed to ensure the output from the detector received unipolar signal amplitude is always associated with sine wave input to the detector the amplitude of the signal maintained a strict linear relationship between the general diode detectors to eliminate the small-signal input non-linear distortion that may arise.
Peak current protection circuit module
Peak current protection circuit shown in Figure 4, the power output of power supply through the UPS board current transformer, with its current size of the form of voltage signals through the signal amplifier to go after the three columns. Amplitude detection circuit all the way through, sent to DSP-ADCINA0 pin; all the way through the current zero-crossing detection circuit, the DSP sent to the GPIO75 pin; the other way through the overload, short circuit protection. When the load overload or short circuit, PWM_OFF into a low-level signals, it will immediately shut down the required two-way inverter PWM wave output, the same time the system switches to bypass DSP mode, play a quick protection.
Results
In the experiment, using the oscilloscope detect steady state inverter output voltage tracking voltage AC power waveform, the results we can see from the inverter system can be basically free of static error tracking. Grid sudden power down, the system switches to protect waveforms, switching time <10ms, indicating that the UPS power grid failure detection speed, switching time is short; the exchange of power grid voltage <190V, when, UPS converts the output from the power grid inverter for the load electrical waveform, switching voltage waveform during the small fluctuation. Inverter output voltage distortion is small, switching time <10ms, UPS output voltage when sudden load increases the dynamic response waveform shows the output voltage fluctuation is small, recovery time <40ms, fast dynamic response to meet the stability and dynamic performance requirements.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn .
An Essay on UPS (part 1)
An Essay on UPS (part 1)
System Introduction
UPS mainly classified according to the working methods, which is divided into back-up-style, on-line interactive, on-line three categories. On-line UPS output, multi-sinusoidal, and the voltage and frequency stability, it is used in power quality more demanding place. UPS described in this article are on-line power supply system, mainly by the input filter, chargers, DC / DC converters, micro-controller, inverter circuit, input power factor conditioning circuit, RS232 communication interface, alarm circuits, etc. parts.
UPS system controller TI introduced the industry's first floating-point TMS320F28335 DSP, it has a 150MHz high-speed processing capability, with 32-bit floating point processing unit, a single instruction cycle 32-bit accumulate operations can be used to meet the faster code development and Integrated high-level controller, floating-point processor performance requirements. And compared to the previous generation's leading DSP, the latest F2833x floating-point controller can not only increase performance by an average of 50%, also has a higher accuracy, simplifying software development, compatible with fixed-point controller C28xTM software features.
When the mains is normal, on-line UPS input AC voltage 220V, through EMI / RFI filtered before being sent to the relay RY2. When the mains power supply voltage is normal, RY1 relay are closed. Under these conditions, municipal electric power will be divided in the following way to control the operation of the circuit after the class:
(I) electricity directly through the exchange of bypass was sent to NC relay contact RY2, and then power to the load. This situation has been maintained to the UPS implementation of the boot "self diagnosis" testing is done, the regulation of the UPS through the microprocessor power supply from the city state to switch to inverter power until the state.
(II) of the UPS via the built-in charger to recharge batteries.
(III) after the electricity supply through the fuse, and then through the regulatory function with input power factor rectifier filter, into a two-way DC power supply. The DC high voltage power supply in the power inverter Neijing SPWM power amplification and high frequency filtered into the way a stable amplitude, frequency and phase synchronization tracking mains power frequency and phase of high-quality pure sine power, the final adoption of sent to the load output filter.
(IV) when the mains power supply abnormal, the battery voltage through the DC / DC converter into a magnitude of up to ± 390V DC high voltage power supply, and then through the power inverter, transforms into the AC sine wave supply the load.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn .
System Introduction
UPS mainly classified according to the working methods, which is divided into back-up-style, on-line interactive, on-line three categories. On-line UPS output, multi-sinusoidal, and the voltage and frequency stability, it is used in power quality more demanding place. UPS described in this article are on-line power supply system, mainly by the input filter, chargers, DC / DC converters, micro-controller, inverter circuit, input power factor conditioning circuit, RS232 communication interface, alarm circuits, etc. parts.
UPS system controller TI introduced the industry's first floating-point TMS320F28335 DSP, it has a 150MHz high-speed processing capability, with 32-bit floating point processing unit, a single instruction cycle 32-bit accumulate operations can be used to meet the faster code development and Integrated high-level controller, floating-point processor performance requirements. And compared to the previous generation's leading DSP, the latest F2833x floating-point controller can not only increase performance by an average of 50%, also has a higher accuracy, simplifying software development, compatible with fixed-point controller C28xTM software features.
When the mains is normal, on-line UPS input AC voltage 220V, through EMI / RFI filtered before being sent to the relay RY2. When the mains power supply voltage is normal, RY1 relay are closed. Under these conditions, municipal electric power will be divided in the following way to control the operation of the circuit after the class:
(I) electricity directly through the exchange of bypass was sent to NC relay contact RY2, and then power to the load. This situation has been maintained to the UPS implementation of the boot "self diagnosis" testing is done, the regulation of the UPS through the microprocessor power supply from the city state to switch to inverter power until the state.
(II) of the UPS via the built-in charger to recharge batteries.
(III) after the electricity supply through the fuse, and then through the regulatory function with input power factor rectifier filter, into a two-way DC power supply. The DC high voltage power supply in the power inverter Neijing SPWM power amplification and high frequency filtered into the way a stable amplitude, frequency and phase synchronization tracking mains power frequency and phase of high-quality pure sine power, the final adoption of sent to the load output filter.
(IV) when the mains power supply abnormal, the battery voltage through the DC / DC converter into a magnitude of up to ± 390V DC high voltage power supply, and then through the power inverter, transforms into the AC sine wave supply the load.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn .
2010年1月14日星期四
Photovoltaic industry propelled power management chip market
Photovoltaic industry propelled power management chip market
China is a new energy and renewable energy sources the fastest-growing country. National Energy Secretary Zhang said that by 2010 China will vigorously develop renewable energy and nuclear power, strive for non-fossil energy accounts for the proportion of primary energy consumption over the previous year increased by 0.5 percentage points. According to State Department Counselor Shi Dinghuan, that along with the cost of solar photovoltaic cells gradually reduce the various local development of solar energy enthusiasm gradually rising.
Investment Advisor in the energy industry's chief researcher Jiang Qian pointed out that solar power generation system as the global prices continue to decline, coupled with the Government's strong national policies to promote solar energy pulling effect Jian Xian, China's photovoltaic business is gradually increasing trend in orders has been prominent. Experience of the baptism of the international financial crisis after the multiple advantages in the manufacturing share of Chinese companies are gradually catching up and even surpass the previous overseas giants. In support of national policy, as well as leading enterprises, driven by the technology gap between Chinese manufacturers no longer exists.
Wider use of solar cells also contributed to the integrated circuit and power devices market expansion. In the solar photovoltaic system, the need for power inverters to convert DC to AC, the core device is the IGBT; In addition, in order to enhance the efficiency of solar cells, but also require the application of power inverter management chip.
Lithium-ion battery market opportunities are unprecedented
Lithium-ion battery is known as the most superior performance of rechargeable batteries, there is the "ultimate battery," said. Compared with the traditional lead-acid batteries and nickel-metal hydride, nickel-cadmium batteries, the lithium-ion battery came a short time, its industrialization and market applications so far only 10 years time, but it is rechargeable batteries of the fastest growing . At present, lithium-ion battery is in the performance of rising costs continue to reduce the rapid expansion of application fields, market share, the stage of rapid growth, and gradually replace the nickel-metal hydride, nickel cadmium batteries.
With the consumer and portable electronic products, continued strength, lithium-ion battery market has remained fairly high growth rate. The market for the huge demand for lithium-ion batteries, as well as human, material and financial resources continue to invest and guide the lithium-ion battery industry gradually strengthened, thus contributing to the battery cost, materials, safety, performance, battery management systems, chargers and other aspects of development . The increasing popularity of new energy vehicles, so that a greater power lithium-ion batteries have its uses. Institute of Physics, Chinese Academy of Sciences Fellow, Huang Xue-Jie said that based on the rapid development of China's battery industry to develop a pure electric vehicle industry is to achieve leap-forward development of China's automobile industry a major opportunity, power lithium-ion battery industry will usher in unprecedented opportunities.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn .
China is a new energy and renewable energy sources the fastest-growing country. National Energy Secretary Zhang said that by 2010 China will vigorously develop renewable energy and nuclear power, strive for non-fossil energy accounts for the proportion of primary energy consumption over the previous year increased by 0.5 percentage points. According to State Department Counselor Shi Dinghuan, that along with the cost of solar photovoltaic cells gradually reduce the various local development of solar energy enthusiasm gradually rising.
Investment Advisor in the energy industry's chief researcher Jiang Qian pointed out that solar power generation system as the global prices continue to decline, coupled with the Government's strong national policies to promote solar energy pulling effect Jian Xian, China's photovoltaic business is gradually increasing trend in orders has been prominent. Experience of the baptism of the international financial crisis after the multiple advantages in the manufacturing share of Chinese companies are gradually catching up and even surpass the previous overseas giants. In support of national policy, as well as leading enterprises, driven by the technology gap between Chinese manufacturers no longer exists.
Wider use of solar cells also contributed to the integrated circuit and power devices market expansion. In the solar photovoltaic system, the need for power inverters to convert DC to AC, the core device is the IGBT; In addition, in order to enhance the efficiency of solar cells, but also require the application of power inverter management chip.
Lithium-ion battery market opportunities are unprecedented
Lithium-ion battery is known as the most superior performance of rechargeable batteries, there is the "ultimate battery," said. Compared with the traditional lead-acid batteries and nickel-metal hydride, nickel-cadmium batteries, the lithium-ion battery came a short time, its industrialization and market applications so far only 10 years time, but it is rechargeable batteries of the fastest growing . At present, lithium-ion battery is in the performance of rising costs continue to reduce the rapid expansion of application fields, market share, the stage of rapid growth, and gradually replace the nickel-metal hydride, nickel cadmium batteries.
With the consumer and portable electronic products, continued strength, lithium-ion battery market has remained fairly high growth rate. The market for the huge demand for lithium-ion batteries, as well as human, material and financial resources continue to invest and guide the lithium-ion battery industry gradually strengthened, thus contributing to the battery cost, materials, safety, performance, battery management systems, chargers and other aspects of development . The increasing popularity of new energy vehicles, so that a greater power lithium-ion batteries have its uses. Institute of Physics, Chinese Academy of Sciences Fellow, Huang Xue-Jie said that based on the rapid development of China's battery industry to develop a pure electric vehicle industry is to achieve leap-forward development of China's automobile industry a major opportunity, power lithium-ion battery industry will usher in unprecedented opportunities.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn .
Smart Grid brings many opportunities for micro-electronics
Smart Grid brings many opportunities for micro-electronics
Smart grid construction will provide new opportunities for the semiconductor industry. Wang Zhihua, deputy director of Institute of Microelectronics, Tsinghua University introduced the world's total electricity consumed in the grid within about 40%. The building of smart grid is to improve the efficient and effective means of power transmission, while the power of intelligent integrated circuit made of a higher demand. Smart grid systems to be able to sense overload and can distribute electricity; smart grid digital technologies, including the use of intelligent power consumption meter testing, through the network of sensors and computer system control burst generators, according to consumer demand, production of electrical energy, thereby enhancing transmission efficiency; Another feature of smart grid is to allow distributed alternative energy into the grid, according to the U.S. Department of Energy predicts that by 2030, wind energy will provide 20% of U.S. electricity demand, which also integrated circuits and semiconductor power devices to provide a market opportunities. The formation of wind power is unstable alternating current rectifier device will need to convert it to DC, then convert the inverter AC power grid can be accepted after the delivery to the grid and going; while the formation of the solar cell power generation DC, also need The power inverter only after the conversion, and network. Both the rectifier or the power inverter, the core of all power semiconductor devices; and distributed energy in the input grid in the process of measurement will have to rely on integrated circuits.
The new energy vehicle electronic system is IC Innovations
Xiamen King Long United Automotive Industry Co., Ltd. Technology Center, said Chen Xiaobing, deputy director, is expected in 2010 China's auto electronics market size will reach 2,000 billion yuan. 2009 to 2010 compound annual growth rate of 26.1%. He also said that in the next few years, several areas of automotive electronics will drive the growth and technological innovation. To hybrid vehicles and pure electric vehicles as the representative of the new energy vehicles become the focus. Among them, multi-channel battery-management chip, multi-channel battery voltage balance control, high-voltage monitoring, high-current testing, large-scale power semiconductor devices, a number of high-performance MCU / DSP chip (SoC to meet the complex calculation of the battery management), and isolators are all part of the new energy vehicle electronic systems areas.
Wireless technology and applications will become very popular
According to market analysis and published by Ovum, the market is expected to show that the global wireless market is growing bright spot in the next four years, by 2012 the global mobile phone subscribers is expected to reach 4.99 billion, the wireless market revenue will grow to 1.019 trillion U.S. dollars. In our case, the 3G investments, according to the operator's network development plan published point of view, from 2009 to 2011, three years, 3G will pull 1 trillion yuan of domestic investment. Specific to TD-SCDMA field, the next three years, China Mobile will invest 150 billion yuan, goal is 50 million users. There can not be ignored around the "Wireless City" and other information-oriented construction projects brought about by investment-led. According to statistics, currently the world's "wireless city" has reached more than 1,000 the number of China's many "Wireless City" in 2010 into a large-scale acceleration phase. The market will drive the base station chips, cell phone chips and WLAN chip development.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/ , or mail to sale38@0102.cn .
Smart grid construction will provide new opportunities for the semiconductor industry. Wang Zhihua, deputy director of Institute of Microelectronics, Tsinghua University introduced the world's total electricity consumed in the grid within about 40%. The building of smart grid is to improve the efficient and effective means of power transmission, while the power of intelligent integrated circuit made of a higher demand. Smart grid systems to be able to sense overload and can distribute electricity; smart grid digital technologies, including the use of intelligent power consumption meter testing, through the network of sensors and computer system control burst generators, according to consumer demand, production of electrical energy, thereby enhancing transmission efficiency; Another feature of smart grid is to allow distributed alternative energy into the grid, according to the U.S. Department of Energy predicts that by 2030, wind energy will provide 20% of U.S. electricity demand, which also integrated circuits and semiconductor power devices to provide a market opportunities. The formation of wind power is unstable alternating current rectifier device will need to convert it to DC, then convert the inverter AC power grid can be accepted after the delivery to the grid and going; while the formation of the solar cell power generation DC, also need The power inverter only after the conversion, and network. Both the rectifier or the power inverter, the core of all power semiconductor devices; and distributed energy in the input grid in the process of measurement will have to rely on integrated circuits.
The new energy vehicle electronic system is IC Innovations
Xiamen King Long United Automotive Industry Co., Ltd. Technology Center, said Chen Xiaobing, deputy director, is expected in 2010 China's auto electronics market size will reach 2,000 billion yuan. 2009 to 2010 compound annual growth rate of 26.1%. He also said that in the next few years, several areas of automotive electronics will drive the growth and technological innovation. To hybrid vehicles and pure electric vehicles as the representative of the new energy vehicles become the focus. Among them, multi-channel battery-management chip, multi-channel battery voltage balance control, high-voltage monitoring, high-current testing, large-scale power semiconductor devices, a number of high-performance MCU / DSP chip (SoC to meet the complex calculation of the battery management), and isolators are all part of the new energy vehicle electronic systems areas.
Wireless technology and applications will become very popular
According to market analysis and published by Ovum, the market is expected to show that the global wireless market is growing bright spot in the next four years, by 2012 the global mobile phone subscribers is expected to reach 4.99 billion, the wireless market revenue will grow to 1.019 trillion U.S. dollars. In our case, the 3G investments, according to the operator's network development plan published point of view, from 2009 to 2011, three years, 3G will pull 1 trillion yuan of domestic investment. Specific to TD-SCDMA field, the next three years, China Mobile will invest 150 billion yuan, goal is 50 million users. There can not be ignored around the "Wireless City" and other information-oriented construction projects brought about by investment-led. According to statistics, currently the world's "wireless city" has reached more than 1,000 the number of China's many "Wireless City" in 2010 into a large-scale acceleration phase. The market will drive the base station chips, cell phone chips and WLAN chip development.
To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/ , or mail to sale38@0102.cn .
2010年1月13日星期三
Essential tools of keeping a car in good repair（part 2）
Essential tools of keeping a car in good repair（part 2）
4, Car Power Inverter
Car inverter is able to convert the 12V DC and 220V AC mains the same for general electrical use, is a convenient vehicle power converter. Car Inverter Power Supply for use as a mobile DC-AC converter will give your life to bring a lot of convenience, is a standing motor vehicle electronic equipment supplies. Through the car cigarette lighter output inverter can be 20W, 40W, 80W, 120W up to 150W power specifications. Then larger power inverter power supply through the connecting cable to the battery.
In need of special note here is that the purchase of car power inverter, not greedy large (power), mainly based on their electrical usage to choose. If only to mobile phones, digital cameras, digital video camera charger, and occasionally in the car with a used laptop, choose the 150W power inverter power source can be within the Gaoding; but if the owners need regular meals, or Zijia You lovers, of more than 200W power inverter is a wise choice.
5, cotton work gloves
Driving out the need of self-maintenance will inevitably encounter trouble when, for example, replace the tires, checking the engine and so on, wear gloves to prevent hands are not dirty or hurt, they can slip, causing work to be more agile.
6, multi-function flashlight
The role of a normal lighting functions
Role of the two, flashlight alarm (flashlight at one end there are magnets, you can smoke breaks flashlight on the roof or the trunk), night light, up to 200m, continuous 36-hour power supply.
The role of 3, containing blades can cut the seat belt when necessary; metal hammer to smash the glass
7, auto fuse
The role is to protect the fuse circuit (line) and electrical equipment, not because of short circuit, overload failure of overheating damage or even fire. The use of vehicles if there is no bright headlights or wipers not move and so on failure, we should first suspect fuse may be damaged. General headlight fuse shall be 20A or 30A specifications.
Be sure to replace the fuse fuse specifications in line with the first wife can not arbitrarily increase the fuse current rating, but can not be replaced by other conductive materials. If you go to replace a blown fuse once again shows that the circuit short-circuit fault has occurred, would like to invite professionals to troubleshoot and then fitted with fuses, 10 million can not be used to increase fuse size to deal with, or most likely cause a fire.
8, to avoid demolition of tire repair tools
In the case of tires is not demolished the damaged tires Trap.
9, waterproof tape, insulation tape
Waterproof adhesive tape used for circuit water, pipeline rupture repair, insulation tape used for circuit maintenance.
10, fire extinguishers
Vehicle fire extinguisher is a very important tool for the car, but many owners do not as the car is equipped with fire extinguishers, dangerous to wait until the time more remote places.
11, Vehicle fighting pump
On the highway, field, or any place, if the tires suddenly leaks, playing air pump will be able to play its emergency function.
These things too, some owners will be placed inside the trunk area, in fact, if you re-equipped with a toolbox, then finishing them all in the toolbox will save a lot of room.
Believe that if your car on the words of these essential tools in the event of failure or accidental able to deal with it smoothly.
4, Car Power Inverter
Car inverter is able to convert the 12V DC and 220V AC mains the same for general electrical use, is a convenient vehicle power converter. Car Inverter Power Supply for use as a mobile DC-AC converter will give your life to bring a lot of convenience, is a standing motor vehicle electronic equipment supplies. Through the car cigarette lighter output inverter can be 20W, 40W, 80W, 120W up to 150W power specifications. Then larger power inverter power supply through the connecting cable to the battery.
In need of special note here is that the purchase of car power inverter, not greedy large (power), mainly based on their electrical usage to choose. If only to mobile phones, digital cameras, digital video camera charger, and occasionally in the car with a used laptop, choose the 150W power inverter power source can be within the Gaoding; but if the owners need regular meals, or Zijia You lovers, of more than 200W power inverter is a wise choice.
5, cotton work gloves
Driving out the need of self-maintenance will inevitably encounter trouble when, for example, replace the tires, checking the engine and so on, wear gloves to prevent hands are not dirty or hurt, they can slip, causing work to be more agile.
6, multi-function flashlight
The role of a normal lighting functions
Role of the two, flashlight alarm (flashlight at one end there are magnets, you can smoke breaks flashlight on the roof or the trunk), night light, up to 200m, continuous 36-hour power supply.
The role of 3, containing blades can cut the seat belt when necessary; metal hammer to smash the glass
7, auto fuse
The role is to protect the fuse circuit (line) and electrical equipment, not because of short circuit, overload failure of overheating damage or even fire. The use of vehicles if there is no bright headlights or wipers not move and so on failure, we should first suspect fuse may be damaged. General headlight fuse shall be 20A or 30A specifications.
Be sure to replace the fuse fuse specifications in line with the first wife can not arbitrarily increase the fuse current rating, but can not be replaced by other conductive materials. If you go to replace a blown fuse once again shows that the circuit short-circuit fault has occurred, would like to invite professionals to troubleshoot and then fitted with fuses, 10 million can not be used to increase fuse size to deal with, or most likely cause a fire.
8, to avoid demolition of tire repair tools
In the case of tires is not demolished the damaged tires Trap.
9, waterproof tape, insulation tape
Waterproof adhesive tape used for circuit water, pipeline rupture repair, insulation tape used for circuit maintenance.
10, fire extinguishers
Vehicle fire extinguisher is a very important tool for the car, but many owners do not as the car is equipped with fire extinguishers, dangerous to wait until the time more remote places.
11, Vehicle fighting pump
On the highway, field, or any place, if the tires suddenly leaks, playing air pump will be able to play its emergency function.
These things too, some owners will be placed inside the trunk area, in fact, if you re-equipped with a toolbox, then finishing them all in the toolbox will save a lot of room.
Believe that if your car on the words of these essential tools in the event of failure or accidental able to deal with it smoothly.
Essential tools of keeping a car in good repair（part 2）
Essential tools of keeping a car in good repair（part 2）
4, Car Power Inverter
Car inverter is able to convert the 12V DC and 220V AC mains the same for general electrical use, is a convenient vehicle power converter. Car Inverter Power Supply for use as a mobile DC-AC converter will give your life to bring a lot of convenience, is a standing motor vehicle electronic equipment supplies. Through the car cigarette lighter output inverter can be 20W, 40W, 80W, 120W up to 150W power specifications. Then larger power inverter power supply through the connecting cable to the battery.
In need of special note here is that the purchase of car power inverter, not greedy large (power), mainly based on their electrical usage to choose. If only to mobile phones, digital cameras, digital video camera charger, and occasionally in the car with a used laptop, choose the 150W power inverter power source can be within the Gaoding; but if the owners need regular meals, or Zijia You lovers, of more than 200W power inverter is a wise choice.
5, cotton work gloves
Driving out the need of self-maintenance will inevitably encounter trouble when, for example, replace the tires, checking the engine and so on, wear gloves to prevent hands are not dirty or hurt, they can slip, causing work to be more agile.
6, multi-function flashlight
The role of a normal lighting functions
Role of the two, flashlight alarm (flashlight at one end there are magnets, you can smoke breaks flashlight on the roof or the trunk), night light, up to 200m, continuous 36-hour power supply.
The role of 3, containing blades can cut the seat belt when necessary; metal hammer to smash the glass
7, auto fuse
The role is to protect the fuse circuit (line) and electrical equipment, not because of short circuit, overload failure of overheating damage or even fire. The use of vehicles if there is no bright headlights or wipers not move and so on failure, we should first suspect fuse may be damaged. General headlight fuse shall be 20A or 30A specifications.
Be sure to replace the fuse fuse specifications in line with the first wife can not arbitrarily increase the fuse current rating, but can not be replaced by other conductive materials. If you go to replace a blown fuse once again shows that the circuit short-circuit fault has occurred, would like to invite professionals to troubleshoot and then fitted with fuses, 10 million can not be used to increase fuse size to deal with, or most likely cause a fire.
8, to avoid demolition of tire repair tools
In the case of tires is not demolished the damaged tires Trap.
9, waterproof tape, insulation tape
Waterproof adhesive tape used for circuit water, pipeline rupture repair, insulation tape used for circuit maintenance.
10, fire extinguishers
Vehicle fire extinguisher is a very important tool for the car, but many owners do not as the car is equipped with fire extinguishers, dangerous to wait until the time more remote places.
11, Vehicle fighting pump
On the highway, field, or any place, if the tires suddenly leaks, playing air pump will be able to play its emergency function.
These things too, some owners will be placed inside the trunk area, in fact, if you re-equipped with a toolbox, then finishing them all in the toolbox will save a lot of room.
Believe that if your car on the words of these essential tools in the event of failure or accidental able to deal with it smoothly.
4, Car Power Inverter
Car inverter is able to convert the 12V DC and 220V AC mains the same for general electrical use, is a convenient vehicle power converter. Car Inverter Power Supply for use as a mobile DC-AC converter will give your life to bring a lot of convenience, is a standing motor vehicle electronic equipment supplies. Through the car cigarette lighter output inverter can be 20W, 40W, 80W, 120W up to 150W power specifications. Then larger power inverter power supply through the connecting cable to the battery.
In need of special note here is that the purchase of car power inverter, not greedy large (power), mainly based on their electrical usage to choose. If only to mobile phones, digital cameras, digital video camera charger, and occasionally in the car with a used laptop, choose the 150W power inverter power source can be within the Gaoding; but if the owners need regular meals, or Zijia You lovers, of more than 200W power inverter is a wise choice.
5, cotton work gloves
Driving out the need of self-maintenance will inevitably encounter trouble when, for example, replace the tires, checking the engine and so on, wear gloves to prevent hands are not dirty or hurt, they can slip, causing work to be more agile.
6, multi-function flashlight
The role of a normal lighting functions
Role of the two, flashlight alarm (flashlight at one end there are magnets, you can smoke breaks flashlight on the roof or the trunk), night light, up to 200m, continuous 36-hour power supply.
The role of 3, containing blades can cut the seat belt when necessary; metal hammer to smash the glass
7, auto fuse
The role is to protect the fuse circuit (line) and electrical equipment, not because of short circuit, overload failure of overheating damage or even fire. The use of vehicles if there is no bright headlights or wipers not move and so on failure, we should first suspect fuse may be damaged. General headlight fuse shall be 20A or 30A specifications.
Be sure to replace the fuse fuse specifications in line with the first wife can not arbitrarily increase the fuse current rating, but can not be replaced by other conductive materials. If you go to replace a blown fuse once again shows that the circuit short-circuit fault has occurred, would like to invite professionals to troubleshoot and then fitted with fuses, 10 million can not be used to increase fuse size to deal with, or most likely cause a fire.
8, to avoid demolition of tire repair tools
In the case of tires is not demolished the damaged tires Trap.
9, waterproof tape, insulation tape
Waterproof adhesive tape used for circuit water, pipeline rupture repair, insulation tape used for circuit maintenance.
10, fire extinguishers
Vehicle fire extinguisher is a very important tool for the car, but many owners do not as the car is equipped with fire extinguishers, dangerous to wait until the time more remote places.
11, Vehicle fighting pump
On the highway, field, or any place, if the tires suddenly leaks, playing air pump will be able to play its emergency function.
These things too, some owners will be placed inside the trunk area, in fact, if you re-equipped with a toolbox, then finishing them all in the toolbox will save a lot of room.
Believe that if your car on the words of these essential tools in the event of failure or accidental able to deal with it smoothly.
Essential tools of keeping a car in good repair（part 1）
Essential tools of keeping a car in good repair（part 1）
Auto increasingly become the daily means of transport, to go out driving, it will inevitably encounter problems when the car, for example, broke down, and the battery run out of power, and a flat tire and so forth. This time the owner will need to have a fully equipped emergency kit practical. Then the emergency kit needs to have any tool?
Car emergency tool set includes: folding reflective warning signs, nylon tow rope, tie off Firewire power inverter, cotton work gloves, multifunction flashlight (with batteries), inverter, automotive fuse, to avoid demolition of tire repair tools, waterproof adhesive tape, insulation tape, fire extinguishers, playing an indispensable tool for pump, etc. 11.
1, collapsible reflective warning signs
This collapsible reflective warning signs are very useful, in your car troubles need to stop checking the time, to have it placed 50 meters behind the car outside, reminding passers-by slow down in advance. At the same time, not when the folding type of warning signs on the car will not take up much room.
2, nylon tow rope
Must be prepared to at least be able to drag a 3-ton vehicle with a trailer, so that the car can be easily broken down when towing.
Third, take power over FireWire
Car radio will not boot to use it can be carried out through a separate battery to start the vehicle. Bold's battery start line, the largest by current 200AMP, generally suitable for displacement of less than gasoline engines in the 2500cc or the 2000cc displacement diesel engines within the battery used between.
The use of the process to note:
Two vehicles can not have any contact with the two vehicles electronic system must have the same voltage.
If the battery had frozen, you can not use the battery started firing line of the ride.
Before connecting, two car engine, audio, air-conditioning are required to switch off.
The connection procedure is as follows:
(1) First, the red wire will launch the line clamp in the "rescued car" on the red battery cathode.
(2) and then the other side of the red wire clamp in the "rescue vehicle" on the red battery cathode.
(3) to the black wire clamp in the "rescued car" the black negative battery.
(4) and then put the black wire clamp in the "rescue train" the black negative battery.
(5) first started, "rescue train" engine, and then start the "rescued car" engine. If it is found rescued cars are still unable to start, we must check whether the part being exposed metal contacts.
Upon the completion of the engine, the still need to remove in order to start take the FireWire, or they may cause short circuit.
Wire removal procedures are as follows:
(1) First, the "rescued car" black wire lowered.
(2), then "rescue vehicle" black wire lowered.
(3) and then "rescue train" the red wire lowered.
(4) Finally, the "rescued car" red wire lowered.
Auto increasingly become the daily means of transport, to go out driving, it will inevitably encounter problems when the car, for example, broke down, and the battery run out of power, and a flat tire and so forth. This time the owner will need to have a fully equipped emergency kit practical. Then the emergency kit needs to have any tool?
Car emergency tool set includes: folding reflective warning signs, nylon tow rope, tie off Firewire power inverter, cotton work gloves, multifunction flashlight (with batteries), inverter, automotive fuse, to avoid demolition of tire repair tools, waterproof adhesive tape, insulation tape, fire extinguishers, playing an indispensable tool for pump, etc. 11.
1, collapsible reflective warning signs
This collapsible reflective warning signs are very useful, in your car troubles need to stop checking the time, to have it placed 50 meters behind the car outside, reminding passers-by slow down in advance. At the same time, not when the folding type of warning signs on the car will not take up much room.
2, nylon tow rope
Must be prepared to at least be able to drag a 3-ton vehicle with a trailer, so that the car can be easily broken down when towing.
Third, take power over FireWire
Car radio will not boot to use it can be carried out through a separate battery to start the vehicle. Bold's battery start line, the largest by current 200AMP, generally suitable for displacement of less than gasoline engines in the 2500cc or the 2000cc displacement diesel engines within the battery used between.
The use of the process to note:
Two vehicles can not have any contact with the two vehicles electronic system must have the same voltage.
If the battery had frozen, you can not use the battery started firing line of the ride.
Before connecting, two car engine, audio, air-conditioning are required to switch off.
The connection procedure is as follows:
(1) First, the red wire will launch the line clamp in the "rescued car" on the red battery cathode.
(2) and then the other side of the red wire clamp in the "rescue vehicle" on the red battery cathode.
(3) to the black wire clamp in the "rescued car" the black negative battery.
(4) and then put the black wire clamp in the "rescue train" the black negative battery.
(5) first started, "rescue train" engine, and then start the "rescued car" engine. If it is found rescued cars are still unable to start, we must check whether the part being exposed metal contacts.
Upon the completion of the engine, the still need to remove in order to start take the FireWire, or they may cause short circuit.
Wire removal procedures are as follows:
(1) First, the "rescued car" black wire lowered.
(2), then "rescue vehicle" black wire lowered.
(3) and then "rescue train" the red wire lowered.
(4) Finally, the "rescued car" red wire lowered.
2010年1月11日星期一
The difficulties to popularise micro-inverter and micro- converter and its business opportunities
The difficulties to popularise micro-inverter and micro- converter and its business opportunities
The challenge is cost, conversion efficiency and reliability. Judging from the current price of view, the current power inverter for 60 cents / W, while the micro-inverter to one U.S. dollars / W. If we can achieve the same level below, we hope to achieve universal access. In the inverter part of the conversion efficiency, the goal is to achieve with existing inverter considerable 98%. The reliability of solar cells and modules will have to very, reaching a level able to work for 20 years.
If these difficulties can be resolved, shipments will be expected to exceed the current inverter. ISuppli forecasts the United States, the original inverter shipments in 2012 of 130 million to 1.4 million units, while the micro-and micro-inverter converter total shipments in 2012 will reach about 800 million units. Currently the U.S. has been the risk of micro-enterprises and other enterprises and micro-inverter converter start development.
In the current inverter, power semiconductors for power conversion feature is particularly important. In the future, apart from power semiconductors, the power output of each module to optimize the control IC, as well as the delivery status of each module the importance of communications IC will also be increasing. The control IC and communications IC is our area of expertise.
In addition, in the future will also promote collaboration with the smart grid. We have also committed to smart grid areas, to make use of experiences in this regard.
We had also engaged in solar cell chip business. As a result, the use of existing solar inverter control IC, access to about 30% of the share. However, there was just one of many applications as solar cells.
May 2009 be configured to engineers responsible for solar cells established a working solar cell system. It also hired experts in solar cell technology. This is because the technology with customers to solve the problem, is very important. But also helps to understand the characteristics of a variety of solar cells on the difference. In the solar cell outside the field of technology experts, we have not yet configured.
The challenge is cost, conversion efficiency and reliability. Judging from the current price of view, the current power inverter for 60 cents / W, while the micro-inverter to one U.S. dollars / W. If we can achieve the same level below, we hope to achieve universal access. In the inverter part of the conversion efficiency, the goal is to achieve with existing inverter considerable 98%. The reliability of solar cells and modules will have to very, reaching a level able to work for 20 years.
If these difficulties can be resolved, shipments will be expected to exceed the current inverter. ISuppli forecasts the United States, the original inverter shipments in 2012 of 130 million to 1.4 million units, while the micro-and micro-inverter converter total shipments in 2012 will reach about 800 million units. Currently the U.S. has been the risk of micro-enterprises and other enterprises and micro-inverter converter start development.
In the current inverter, power semiconductors for power conversion feature is particularly important. In the future, apart from power semiconductors, the power output of each module to optimize the control IC, as well as the delivery status of each module the importance of communications IC will also be increasing. The control IC and communications IC is our area of expertise.
In addition, in the future will also promote collaboration with the smart grid. We have also committed to smart grid areas, to make use of experiences in this regard.
We had also engaged in solar cell chip business. As a result, the use of existing solar inverter control IC, access to about 30% of the share. However, there was just one of many applications as solar cells.
May 2009 be configured to engineers responsible for solar cells established a working solar cell system. It also hired experts in solar cell technology. This is because the technology with customers to solve the problem, is very important. But also helps to understand the characteristics of a variety of solar cells on the difference. In the solar cell outside the field of technology experts, we have not yet configured.
Reform and application of solar cell modules
Reform and application of solar cell modules
U.S. solar cell market conditions
Currently, California is the U.S. demand for solar cells driving force. The state's 2009 annual import is about 350MW, equivalent to half of the entire United States. However, the next 2 ~ 3 years, the state's import volume growth is likely to decline. In 2009 increased 150% over the previous year, while in 2010 there is expected to be slow, with only a one-year increase of 75%. In addition, in 2011, is expected to further decline, only a 10% increase over the previous year. Under its influence, the overall U.S. import volume growth of solar cells will also be 2 ~ 3 years showed a downward trend.
Reform of solar cell modules
Originally multiple solar battery module in series, another link with the power inverter. Therefore, there is sunshine if there is a result of the uneven and unequal characteristics lead to decline in power output module, the overall output power can greatly reduce the problem.
In order to solve this problem, each solar cell modules in the future may be equipped with inverter and converter. It's called "micro-inverters" and "micro-converter." This can be achieved by each module to optimize the output power, making the overall output power to maximize. In addition, the combination of words and communication functions can also be used to monitor the status of each module, to detect faulty modules.
Application of solar cell modules
Micro-inverter is equipped with all of the various modules available on the function of the inverter. In other words, from the optimization of output power to the DC-AC conversion by the module to carry out. The output power from the module exchanges can be directly incorporated into the grid. As the construction easy, so the installation of residential and commercial facilities, businesses should there is a demand.
Micro-converter output power of each module optimization and DC-DC converter, and the remaining DC-AC converter is set by the other inverter to complete. Micro-converter positioned in the existing inverter and between the micro-inverter. As the solar cell module output power of DC, so it can generate electricity directly to the DC state be used to charge batteries. No electricity area of wireless communication base stations, which do not access to network facilities, there is demand for an independent.
In addition, there may also be a large demand for solar power stations. How do large-scale solar power plants exist a huge number of solar cell modules to find fault module problem. The chip is equipped with control and communication micro-converter will help to solve this problem. As the micro-inverter is higher than the price of micro-converter, it is difficult to import large-scale solar power stations.
U.S. solar cell market conditions
Currently, California is the U.S. demand for solar cells driving force. The state's 2009 annual import is about 350MW, equivalent to half of the entire United States. However, the next 2 ~ 3 years, the state's import volume growth is likely to decline. In 2009 increased 150% over the previous year, while in 2010 there is expected to be slow, with only a one-year increase of 75%. In addition, in 2011, is expected to further decline, only a 10% increase over the previous year. Under its influence, the overall U.S. import volume growth of solar cells will also be 2 ~ 3 years showed a downward trend.
Reform of solar cell modules
Originally multiple solar battery module in series, another link with the power inverter. Therefore, there is sunshine if there is a result of the uneven and unequal characteristics lead to decline in power output module, the overall output power can greatly reduce the problem.
In order to solve this problem, each solar cell modules in the future may be equipped with inverter and converter. It's called "micro-inverters" and "micro-converter." This can be achieved by each module to optimize the output power, making the overall output power to maximize. In addition, the combination of words and communication functions can also be used to monitor the status of each module, to detect faulty modules.
Application of solar cell modules
Micro-inverter is equipped with all of the various modules available on the function of the inverter. In other words, from the optimization of output power to the DC-AC conversion by the module to carry out. The output power from the module exchanges can be directly incorporated into the grid. As the construction easy, so the installation of residential and commercial facilities, businesses should there is a demand.
Micro-converter output power of each module optimization and DC-DC converter, and the remaining DC-AC converter is set by the other inverter to complete. Micro-converter positioned in the existing inverter and between the micro-inverter. As the solar cell module output power of DC, so it can generate electricity directly to the DC state be used to charge batteries. No electricity area of wireless communication base stations, which do not access to network facilities, there is demand for an independent.
In addition, there may also be a large demand for solar power stations. How do large-scale solar power plants exist a huge number of solar cell modules to find fault module problem. The chip is equipped with control and communication micro-converter will help to solve this problem. As the micro-inverter is higher than the price of micro-converter, it is difficult to import large-scale solar power stations.
2010年1月9日星期六
National Semiconductor distributed MPPT to improve the efficiency of solar PV system
National Semiconductor distributed MPPT to improve the efficiency of solar PV system
This paper analyzes the solar photovoltaic system, solar panels as part of the electricity generated by the shielding and the problem of declining capacity, and introduced the board level in the battery using a distributed maximum power point tracking system (MPPT) advantages, but also on the use of technology in all SolarMagic kinds of case study results were discussed.
Solar energy is the most promising renewable energy sources. Since the introduction of incentive policies and traditions of the impact of rising electricity costs, more and more families are turning to solar energy, and the roof-mounted photovoltaic (PV) systems. PV systems at current prices, the user typically 7-8 years to get return on investment. Government incentives and the service life of PV system must be able to continue for 20 years or older. Solar PV systems return on investment depends on the annual capacity of the system, so users need to PV system must have efficient, reliable and easy maintenance features to get maximum generating capacity.
Today, many users who install solar PV systems have been realized in part or intermittent shelter will affect the system's generating capacity.
Part of the shadow mask of the solar PV systems:
When the trees, chimneys or other objects blocking the view projection of the shadow of PV systems, they will cause the system to result in a "mismatch" problem. Even if the PV system has only been obscured by the shadow of a little bit of generating capacity will lead to sharp decline. Part of the shelter system due to mismatch of the actual impact of electricity generation through a simple formula is difficult to obtain. Affect the system capacity because of many factors, including the internal battery module interconnects, module orientation, photovoltaic cells series-parallel connection between the two groups of issues and power inverter configurations. Photovoltaic modules interconnected by a number of battery strings formed, each battery string is called a "group out." Column for each group by a bypass diode to protect, so that one or more of the battery is obscured or damage cause the entire battery string were damaged because of overheating. The battery packs in series or in parallel columns can make solar panels have a relatively high voltage or current.
Photovoltaic arrays together by a series of photovoltaic modules by parallel composition. Each PV module string must be less than the maximum voltage inverter maximum input voltage rating.
When the PV system was partially obscured when the battery has not been sheltered in the current flowing through the masked part of the bypass diode.
When the PV array be obscured The occurrence of such situation, we will generate an electrical VP has more than one peak curve. Figure 1 shows the maximum power point with a centralized tracking system (MPPT) function of the standard grid configuration, in which a group of columns two panels have been obscured. Centralized MPPT DC voltage can not be set, so could not make out the output power of the two groups have reached maximum. The high DC voltage points (M1), MPPT so that the column is not obscured group reached the maximum output power. In the low DC voltage point (M2), MPPT group would shadowing the column reaches the maximum output power: Bypass diodes to bypass the shielding panels, this group is not shielded column panels will provide the full amount of current. MPP may result in multiple arrays to focus the maximum power point tracking (MPPT) to configure the additional losses as the maximum power point tracking device may get the wrong message to stop in the local maximum point, and stability characteristics of the times that have advantages of VP.
This paper analyzes the solar photovoltaic system, solar panels as part of the electricity generated by the shielding and the problem of declining capacity, and introduced the board level in the battery using a distributed maximum power point tracking system (MPPT) advantages, but also on the use of technology in all SolarMagic kinds of case study results were discussed.
Solar energy is the most promising renewable energy sources. Since the introduction of incentive policies and traditions of the impact of rising electricity costs, more and more families are turning to solar energy, and the roof-mounted photovoltaic (PV) systems. PV systems at current prices, the user typically 7-8 years to get return on investment. Government incentives and the service life of PV system must be able to continue for 20 years or older. Solar PV systems return on investment depends on the annual capacity of the system, so users need to PV system must have efficient, reliable and easy maintenance features to get maximum generating capacity.
Today, many users who install solar PV systems have been realized in part or intermittent shelter will affect the system's generating capacity.
Part of the shadow mask of the solar PV systems:
When the trees, chimneys or other objects blocking the view projection of the shadow of PV systems, they will cause the system to result in a "mismatch" problem. Even if the PV system has only been obscured by the shadow of a little bit of generating capacity will lead to sharp decline. Part of the shelter system due to mismatch of the actual impact of electricity generation through a simple formula is difficult to obtain. Affect the system capacity because of many factors, including the internal battery module interconnects, module orientation, photovoltaic cells series-parallel connection between the two groups of issues and power inverter configurations. Photovoltaic modules interconnected by a number of battery strings formed, each battery string is called a "group out." Column for each group by a bypass diode to protect, so that one or more of the battery is obscured or damage cause the entire battery string were damaged because of overheating. The battery packs in series or in parallel columns can make solar panels have a relatively high voltage or current.
Photovoltaic arrays together by a series of photovoltaic modules by parallel composition. Each PV module string must be less than the maximum voltage inverter maximum input voltage rating.
When the PV system was partially obscured when the battery has not been sheltered in the current flowing through the masked part of the bypass diode.
When the PV array be obscured The occurrence of such situation, we will generate an electrical VP has more than one peak curve. Figure 1 shows the maximum power point with a centralized tracking system (MPPT) function of the standard grid configuration, in which a group of columns two panels have been obscured. Centralized MPPT DC voltage can not be set, so could not make out the output power of the two groups have reached maximum. The high DC voltage points (M1), MPPT so that the column is not obscured group reached the maximum output power. In the low DC voltage point (M2), MPPT group would shadowing the column reaches the maximum output power: Bypass diodes to bypass the shielding panels, this group is not shielded column panels will provide the full amount of current. MPP may result in multiple arrays to focus the maximum power point tracking (MPPT) to configure the additional losses as the maximum power point tracking device may get the wrong message to stop in the local maximum point, and stability characteristics of the times that have advantages of VP.
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