2009年11月30日星期一
2009年11月27日星期五
Maintenance points of power inverter product
Maintenance points of power inverter product 
Sales of the largest currently on the market, the most common vehicleInverterThe output power of 70W-150W, Inverter circuit mainly uses TL494 or KA7500 chip-based pulse-width modulation circuit. Car inverter circuit as a whole can be largely divided into two parts, each part of the adoption of a TL494 or KA7500 chips control circuit, in which the role of the first part of the circuit isAutomotive12V DC battery such as those provided by high-frequency PWM (pulse width modulation) switching power supply technology to convert 30kHz-50kHz, 220V AC or so; the second part of the role of the circuit is to use the bridge rectifier, filter, pulse-width modulation and switching power output and other technology, 30kHz ~ 50kHz, 220V AC converted to about 50Hz, 220V AC.
Maintenance points of power inverter product
As Car Inverter Circuits generally have a power soft-start function, so switched on to wait for 5s-30s will be after the 220V AC output, while LED lights lit. When the LED indicator does not light, then the inverter circuit that did not work.
When switched on 30s and above, LED lights do not light up when you need to measure the output jack at the exchange of XAC voltage value, if the voltage of 220V or so normal, then only part of the circuit LED indicator light appeared fault; if XAC by measuring the output jack of the AC voltage at a value of 0, then cause of the malfunction of inverter circuit before the class did not work, probably chip IC1's internal protection circuitry has been launched.
The internal protection circuit chip IC1 determine whether to activate the approach is: Use a multimeter measuring DC voltage blocking chip IC1's pin 3 to ground DC voltage value, if the voltage is above 1V is illustrated in the internal protection circuit chip has been launched, otherwise the interruption action due to the reasons for non-protection circuits.
If the chip IC1 to ground voltage of 3 feet or more values in the 1V, indicating that the internal protection circuit chip has been activated, the need for further DC voltage with the multimeter test chip IC1 block of 15,16 feet between the DC voltage, and chip IC1's DC voltage between 1,2 feet. Under normal circumstances, Figure 1 circuit chips IC1, 15 feet on the ground DC voltage should be higher than 16 feet on the ground DC voltage, two feet on the ground of the DC voltage should be higher than one foot on the ground DC voltage, only when the two conditions are met, the chip IC1's 3 feet on the ground as a normal DC voltage to 0V about inverter circuit to work properly. If it is found in a test voltage does not meet the above-mentioned relationship, just press the corresponding slip road to find cause of the malfunction, you can solve problems.
Sales of the largest currently on the market, the most common vehicleInverterThe output power of 70W-150W, Inverter circuit mainly uses TL494 or KA7500 chip-based pulse-width modulation circuit. Car inverter circuit as a whole can be largely divided into two parts, each part of the adoption of a TL494 or KA7500 chips control circuit, in which the role of the first part of the circuit isAutomotive12V DC battery such as those provided by high-frequency PWM (pulse width modulation) switching power supply technology to convert 30kHz-50kHz, 220V AC or so; the second part of the role of the circuit is to use the bridge rectifier, filter, pulse-width modulation and switching power output and other technology, 30kHz ~ 50kHz, 220V AC converted to about 50Hz, 220V AC.
Maintenance points of power inverter product
As Car Inverter Circuits generally have a power soft-start function, so switched on to wait for 5s-30s will be after the 220V AC output, while LED lights lit. When the LED indicator does not light, then the inverter circuit that did not work.
When switched on 30s and above, LED lights do not light up when you need to measure the output jack at the exchange of XAC voltage value, if the voltage of 220V or so normal, then only part of the circuit LED indicator light appeared fault; if XAC by measuring the output jack of the AC voltage at a value of 0, then cause of the malfunction of inverter circuit before the class did not work, probably chip IC1's internal protection circuitry has been launched.
The internal protection circuit chip IC1 determine whether to activate the approach is: Use a multimeter measuring DC voltage blocking chip IC1's pin 3 to ground DC voltage value, if the voltage is above 1V is illustrated in the internal protection circuit chip has been launched, otherwise the interruption action due to the reasons for non-protection circuits.
If the chip IC1 to ground voltage of 3 feet or more values in the 1V, indicating that the internal protection circuit chip has been activated, the need for further DC voltage with the multimeter test chip IC1 block of 15,16 feet between the DC voltage, and chip IC1's DC voltage between 1,2 feet. Under normal circumstances, Figure 1 circuit chips IC1, 15 feet on the ground DC voltage should be higher than 16 feet on the ground DC voltage, two feet on the ground of the DC voltage should be higher than one foot on the ground DC voltage, only when the two conditions are met, the chip IC1's 3 feet on the ground as a normal DC voltage to 0V about inverter circuit to work properly. If it is found in a test voltage does not meet the above-mentioned relationship, just press the corresponding slip road to find cause of the malfunction, you can solve problems.
Xbox360 Wireless 802.11g / n adapter is on sales
Xbox360 Wireless 802.11g / n adapter is on sales
If you want to use your Xbox360 wireless network, then the Amazon now delivers the goods would sit your appetite. You can buy from the top of the Xbox360 supports 802.11g , or 802.11n wireless network adapter, the price was 79.99 U.S. dollars respectively, and 99.99 U.S. dollars, members can enjoy the benefits, membership price of 67.99 U.S. dollars and 83.49 U.S. dollars.
Who want to watch movies or use of smooth high-definition Netflix users who recommended the use of N standard adapter. Of course, if you do not support the N standard router, then the use of more expensive models is enough to use.
Perhaps the time of the arrival of Black Friday deals have better offers.
If you want to use your Xbox360 wireless network, then the Amazon now delivers the goods would sit your appetite. You can buy from the top of the Xbox360 supports 802.11g , or 802.11n wireless network adapter, the price was 79.99 U.S. dollars respectively, and 99.99 U.S. dollars, members can enjoy the benefits, membership price of 67.99 U.S. dollars and 83.49 U.S. dollars.
Who want to watch movies or use of smooth high-definition Netflix users who recommended the use of N standard adapter. Of course, if you do not support the N standard router, then the use of more expensive models is enough to use.
Perhaps the time of the arrival of Black Friday deals have better offers.
2009年11月26日星期四
Texas Instruments concentrated on micro-inverter solar cell （part 2）
Texas Instruments concentrated on micro-inverter solar cell （part 2）
- The TI is concerned, what will bring business opportunities?
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.
- TI set up solar cell business, what kind of system?
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.
- Please talk about the U.S. solar 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.
- The TI is concerned, what will bring business opportunities?
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.
- TI set up solar cell business, what kind of system?
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.
- Please talk about the U.S. solar 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.
Texas Instruments concentrated on micro-inverter solar cell （part 1）
Texas Instruments concentrated on micro-inverter solar cell （part 1）
"Solar battery module the brink of a major transformation. For us, will have a lot of business opportunities." This statement is issued by Texas Instruments (TI) is responsible for solar cell-related business Dave Freeman. Freeman was in May 2009 set up a specialized solar cell business team, the author on the future of its solar cell industry trends, interviews were conducted.
- Solar battery module What is meant by change?
Originally multiple solar battery module in series, another link with the 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.
- Is expected to apply to what purpose?
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 forsolar 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.
- Popularity of micro-and micro-inverter converter what difficulties are currently exists?
The challenge is cost, conversion efficiency and reliability. Judging from the current price of view, the current 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.
"Solar battery module the brink of a major transformation. For us, will have a lot of business opportunities." This statement is issued by Texas Instruments (TI) is responsible for solar cell-related business Dave Freeman. Freeman was in May 2009 set up a specialized solar cell business team, the author on the future of its solar cell industry trends, interviews were conducted.
- Solar battery module What is meant by change?
Originally multiple solar battery module in series, another link with the 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.
- Is expected to apply to what purpose?
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 forsolar 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.
- Popularity of micro-and micro-inverter converter what difficulties are currently exists?
The challenge is cost, conversion efficiency and reliability. Judging from the current price of view, the current 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.
2009年11月25日星期三
What is Solar Light?
What is Solar Light
?
Solar Lights:
System Principle: The system works simply, using principles of photovoltaic effect of solar cells made from solar panels during the day to receive solar radiation and convert to electricity output, through the charge-discharge controller is stored in batteries at night when the illumination gradually reduced to 10lux around open circuit voltage of solar panels around 4.5V, charge-discharge controller, the voltage value detected after the action, battery discharge of the lamp. 8 hours after the discharge of batteries, charge-discharge controller movements, the end of battery discharge. Charge and discharge controller's main role is to protect the battery.
Solar Power System:
How it works:
During the day, in the light conditions, the solar cell components produce a certain electromotive force, through the formation of the component series-parallel solar cell matrix, making square voltage system input voltage demands. And through the charge and discharge controller to recharge batteries, will be converted from light energy stored up. The evening, battery for the inverter to provide input through the inverter the role of the direct current into alternating current, transmission to the distribution cabinets, distribution cabinets from the role of switching power supply. The discharge of batteries controlled by a controller to ensure the normal use of battery. PV power plant system should also be limited load protection and lightning protection devices to protect the system equipment from lightning overload operation and to maintain the safe use of system equipment.
Solar street lamp advantages: Yi Jia Photoelectric
1, solar street lamp provide electricity using solar photovoltaic cells, solar energy as a green new energy, "inexhaustible, bottomless." Make full use of solar energy resources, ease the tense situation of conventional energy sources are of positive significance.
2, solar street lamp installation simple, convenient, no need to do, as ordinary street a lot of basic engineering the laying of cables, etc., just to have a fixed base, all the lines and control part are placed in the lighthouse, forming a whole.
3, solar street lamp operation and maintenance cost is low. Solar lights use solar power, in addition to rainy days converted to electricity supply will produce a small part of the electricity costs, operating costs almost zero. The entire system is running are automatic control, without human intervention, almost no maintenance costs.
?Solar Lights:
System Principle: The system works simply, using principles of photovoltaic effect of solar cells made from solar panels during the day to receive solar radiation and convert to electricity output, through the charge-discharge controller is stored in batteries at night when the illumination gradually reduced to 10lux around open circuit voltage of solar panels around 4.5V, charge-discharge controller, the voltage value detected after the action, battery discharge of the lamp. 8 hours after the discharge of batteries, charge-discharge controller movements, the end of battery discharge. Charge and discharge controller's main role is to protect the battery.
Solar Power System:
How it works:
During the day, in the light conditions, the solar cell components produce a certain electromotive force, through the formation of the component series-parallel solar cell matrix, making square voltage system input voltage demands. And through the charge and discharge controller to recharge batteries, will be converted from light energy stored up. The evening, battery for the inverter to provide input through the inverter the role of the direct current into alternating current, transmission to the distribution cabinets, distribution cabinets from the role of switching power supply. The discharge of batteries controlled by a controller to ensure the normal use of battery. PV power plant system should also be limited load protection and lightning protection devices to protect the system equipment from lightning overload operation and to maintain the safe use of system equipment.
Solar street lamp advantages: Yi Jia Photoelectric
1, solar street lamp provide electricity using solar photovoltaic cells, solar energy as a green new energy, "inexhaustible, bottomless." Make full use of solar energy resources, ease the tense situation of conventional energy sources are of positive significance.
2, solar street lamp installation simple, convenient, no need to do, as ordinary street a lot of basic engineering the laying of cables, etc., just to have a fixed base, all the lines and control part are placed in the lighthouse, forming a whole.
3, solar street lamp operation and maintenance cost is low. Solar lights use solar power, in addition to rainy days converted to electricity supply will produce a small part of the electricity costs, operating costs almost zero. The entire system is running are automatic control, without human intervention, almost no maintenance costs.
Most of MP3& MP4 Are Unqualified
Most of MP3& MP4 Are Unqualified
Guangdong Provincial Industrial and Commercial Bureau recently announced the province's 21 marketing companies selling MP3, MP4 of the sampling results in a sample of 50 batches, 32 batches of unqualified, non - eligible project focused on the power adapter easily be puncture on the circuit, is apt to cause the user an electric shock, or the battery burst into flames. Experts advise: Buy MP3, MP4 as we choose USB direct charging, use less power adapter.
Guangdong Provincial Industrial and Commercial Bureau recently announced the province's 21 marketing companies selling MP3, MP4 of the sampling results in a sample of 50 batches, 32 batches of unqualified, non - eligible project focused on the power adapter easily be puncture on the circuit, is apt to cause the user an electric shock, or the battery burst into flames. Experts advise: Buy MP3, MP4 as we choose USB direct charging, use less power adapter.
2009年11月24日星期二
Emulex Produced A New Host Bus Adapter Express Module
Emulex Produced A New Host Bus Adapter Express Module
FiberChannel and 1Gb / s Ethernet in one ExpressModule ™ host bus adapter (HBA). ExpressModuleHBA targeted SunBlade ™ 6000 modular system that can be virtualizedServers, Large or mixed-type storage area network (SAN) as well as local area network (LAN) Environment to provide higher performance, excellent flexibility and a higher slot utilization.
Emulex's chief marketing officer and senior vice president of business development SteveDaheb said: "SunBlade6000 modular system with excellent scalability and high performance, and Emulex's ExpressModule HBA integration can improve theTransmissionRate, more efficient use of CPU, the I / O-intensive applications and server virtualization to provide support. We are committed to a wide range of connectivitySolutionsTo provide customers with enterprise-class scalability, excellent flexibility and comprehensive virtualization capabilities. This announcement further demonstrates Emulex and Sun Win-Win Team advantage. "
Emulex multi-protocol ExpressModuleHBA use Sun Modular architecture, support hot-plug feature of high-density SAN extension to avoid the blade server that is running the installation, re-configuration, and the uninstall process, when any interruption. This will provide customers a flexible SAN connectivity solutions, to achieve server virtualization, blade servers and large-scale environments fully exploited. In addition, EmulexExpressModuleHBA as a peripheral to connect to each blade server, can reduce the heat and Power Calls for the impact of blade servers.
SunMicrosystems, senior director of storage marketing JasonSchaffer, said: "Customers have been seeking a higher capacity and processing power, but also the hope of finding lower energy consumption, cooling and space requirements of an effective manner. Revolutionary SunBlade 6000 modular system with a flexible Emulex ExpressModule high-performance LAN and SAN connectivity solutions that not only meet the requirements of customers, but also to deliver more value. Sun Blade 6000 Series is a consolidation and virtualization, a variety of applications (from the network to the blade server background) is the ideal choice. We have been In the unremitting efforts, strive to offer our customers the most advanced enterprise-class solutions to meet the evolving data center needs. "
Designed specifically for SunBlade6000 system, Emulex is compatible with standard multi-protocol ExpressModuleHBA to Emulex 4Gb / s and 8Gb / s Fiber Channel LightPulse ® HBA, with Linux, Solaris ™ operating system, VMware, and Windows platforms to achieve full interoperability. Integrates a dual-channel 8Gb / s Fiber Channel and dual-port 1Gb / s Ethernet Emulex ExpressModule HBA (Sun model SG-XPCIEFCGBE-E8-Z) in the Sun and its authorized dealers for sale.
FiberChannel and 1Gb / s Ethernet in one ExpressModule ™ host bus adapter (HBA). ExpressModuleHBA targeted SunBlade ™ 6000 modular system that can be virtualizedServers, Large or mixed-type storage area network (SAN) as well as local area network (LAN) Environment to provide higher performance, excellent flexibility and a higher slot utilization.
Emulex's chief marketing officer and senior vice president of business development SteveDaheb said: "SunBlade6000 modular system with excellent scalability and high performance, and Emulex's ExpressModule HBA integration can improve theTransmissionRate, more efficient use of CPU, the I / O-intensive applications and server virtualization to provide support. We are committed to a wide range of connectivitySolutionsTo provide customers with enterprise-class scalability, excellent flexibility and comprehensive virtualization capabilities. This announcement further demonstrates Emulex and Sun Win-Win Team advantage. "
Emulex multi-protocol ExpressModuleHBA use Sun Modular architecture, support hot-plug feature of high-density SAN extension to avoid the blade server that is running the installation, re-configuration, and the uninstall process, when any interruption. This will provide customers a flexible SAN connectivity solutions, to achieve server virtualization, blade servers and large-scale environments fully exploited. In addition, EmulexExpressModuleHBA as a peripheral to connect to each blade server, can reduce the heat and Power Calls for the impact of blade servers.
SunMicrosystems, senior director of storage marketing JasonSchaffer, said: "Customers have been seeking a higher capacity and processing power, but also the hope of finding lower energy consumption, cooling and space requirements of an effective manner. Revolutionary SunBlade 6000 modular system with a flexible Emulex ExpressModule high-performance LAN and SAN connectivity solutions that not only meet the requirements of customers, but also to deliver more value. Sun Blade 6000 Series is a consolidation and virtualization, a variety of applications (from the network to the blade server background) is the ideal choice. We have been In the unremitting efforts, strive to offer our customers the most advanced enterprise-class solutions to meet the evolving data center needs. "
Designed specifically for SunBlade6000 system, Emulex is compatible with standard multi-protocol ExpressModuleHBA to Emulex 4Gb / s and 8Gb / s Fiber Channel LightPulse ® HBA, with Linux, Solaris ™ operating system, VMware, and Windows platforms to achieve full interoperability. Integrates a dual-channel 8Gb / s Fiber Channel and dual-port 1Gb / s Ethernet Emulex ExpressModule HBA (Sun model SG-XPCIEFCGBE-E8-Z) in the Sun and its authorized dealers for sale.
PV Industry: Three Ministries Speed up the "Golden Sun" Progress
PV Industry: Three Ministries Speed up the "Golden Sun" Progress 
Recently, the Ministry of Finance, Science and Technology, National Energy Board jointly released the "good" Golden Sun "demonstration project implementation of the notice" to speed up the implementation of the "Golden Sun" demonstration project. This indicates that the photovoltaic industry, the attitude of the government care to promote the development of PV market determination.
According to Finance Ministry sources, demonstration projects, capacity of 642 MW, in 2008 China's solar energy capacity is 145 megawatts of 4.4-fold, demonstration projects promoting photovoltaic industry chain is bound to drive the huge demand, the domestic photovoltaic market, revenue recognition is expected to in 2010 and 2011 to achieve explosive growth.
Together with the "notice" with the release of the "golden sun, the basic requirements Demonstration Project," the procurement of key components have made it clear that the project will help standardize the bidding process, so that an open transparent bidding, so that a truly golden sun model demonstration project effect. "Notice" provisions of crystalline silicon components of the price-cap 14 per hour / peak watt, amorphous silicon thin-film components of the price-cap 9 yuan / peak watt, grid-connected inverter in the single-phase inverter price ceiling 5 yuan / watts, three-phase inverter price ceiling 3 yuan / watt, independent inverter price ceiling is 3 yuan / watt.
According to our calculations, to 70 U.S. dollars / kg of polysilicon unit price calculation, the total component cost of 1.54 U.S. dollars / Wp, equivalent to 10.47 yuan / Wp, with price-cap 14 yuan / Wp basis, gross margins reach 25.2%, for component manufacturers, 14 yuan / Wp unit price is acceptable.
"Notice" will enhance confidence in the market for photovoltaic industry, bringing to the plate photovoltaic transactional investment opportunities. We recommend that investors can focus the integration of PV companies Tianwei change security (600550SH), the leading domestic super-white glass, Jin Jing Science and Technology (600586SH), with a photovoltaic construction business Tellhow (600590SH), production of lead-acid batteries Windsurfing Stock (600482SH), with a flexible transmission technology, Hidenobu shares (002123SZ), as well as the parent has access to the national grid photovoltaic grid-country R & D platform NARI (600406SH).
Panoramic Network published this article aims to disseminate more information, contact and decline Lichangwuguan reproduced on this website! Panoramic Network does not guarantee the accuracy of their content, reliability, and validity of the original edition as well as the text of the article in the presentation and content of the text through the site is not confirmed, of which all or part of this article, as well as the contents of the authenticity of the text, complete , timeliness, accuracy of data and graphics site makes no warranties or promises, the reader is for reference only and not for any of buying and selling of the recommendations, and to verify your own relevant content. Accordingly, operation, your own risk..
Recently, the Ministry of Finance, Science and Technology, National Energy Board jointly released the "good" Golden Sun "demonstration project implementation of the notice" to speed up the implementation of the "Golden Sun" demonstration project. This indicates that the photovoltaic industry, the attitude of the government care to promote the development of PV market determination.
According to Finance Ministry sources, demonstration projects, capacity of 642 MW, in 2008 China's solar energy capacity is 145 megawatts of 4.4-fold, demonstration projects promoting photovoltaic industry chain is bound to drive the huge demand, the domestic photovoltaic market, revenue recognition is expected to in 2010 and 2011 to achieve explosive growth.
Together with the "notice" with the release of the "golden sun, the basic requirements Demonstration Project," the procurement of key components have made it clear that the project will help standardize the bidding process, so that an open transparent bidding, so that a truly golden sun model demonstration project effect. "Notice" provisions of crystalline silicon components of the price-cap 14 per hour / peak watt, amorphous silicon thin-film components of the price-cap 9 yuan / peak watt, grid-connected inverter in the single-phase inverter price ceiling 5 yuan / watts, three-phase inverter price ceiling 3 yuan / watt, independent inverter price ceiling is 3 yuan / watt.
According to our calculations, to 70 U.S. dollars / kg of polysilicon unit price calculation, the total component cost of 1.54 U.S. dollars / Wp, equivalent to 10.47 yuan / Wp, with price-cap 14 yuan / Wp basis, gross margins reach 25.2%, for component manufacturers, 14 yuan / Wp unit price is acceptable.
"Notice" will enhance confidence in the market for photovoltaic industry, bringing to the plate photovoltaic transactional investment opportunities. We recommend that investors can focus the integration of PV companies Tianwei change security (600550SH), the leading domestic super-white glass, Jin Jing Science and Technology (600586SH), with a photovoltaic construction business Tellhow (600590SH), production of lead-acid batteries Windsurfing Stock (600482SH), with a flexible transmission technology, Hidenobu shares (002123SZ), as well as the parent has access to the national grid photovoltaic grid-country R & D platform NARI (600406SH).
Panoramic Network published this article aims to disseminate more information, contact and decline Lichangwuguan reproduced on this website! Panoramic Network does not guarantee the accuracy of their content, reliability, and validity of the original edition as well as the text of the article in the presentation and content of the text through the site is not confirmed, of which all or part of this article, as well as the contents of the authenticity of the text, complete , timeliness, accuracy of data and graphics site makes no warranties or promises, the reader is for reference only and not for any of buying and selling of the recommendations, and to verify your own relevant content. Accordingly, operation, your own risk..
2009年11月23日星期一
IR Introduce Welding Metals Using Automotive-grade Insulated Gate Bipolar Transistor
IR Introduce Welding Metals Using Automotive-grade Insulated Gate Bipolar Transistor
International Rectifier Corporation, referred to IR, introduced the use of welding metal (Solderable Front Metal, SFM) of 1200V insulated gate bipolar transistors (IGBT) AUIRG7CH80K6B-M, for electric vehicle (EV), hybrid electric vehicle (HEV), and the power drive high-current, high-voltage automotive Inverter Module.
AUIRG7CH80K6B-M uses IR The latest generation of field cut-off trench technology to significantly reduce conduction and switching losses. In addition, the new device can be realized before welding metal double-sided cooling, improved thermal performance, removed the wire, so as to achieve a higher reliability.
IR Pan Dawei, vice president of Asia Sales, said: "All along, the wire are the cars Inverter Module failure of the underlying factors. The use of metal before welding AUIRG7CH80K6B-M to use wire-free packaging technology and has double-sided cooling features, improves thermal performance and efficiency, as well as the Inverter The module reliability. "
The new devices also include other major performance advantages of a square reverse bias safe operating area (RBSOA), up to 175 degrees Celsius maximum operating temperature, the peak turn-off capabilities, are VCE (on) temperature coefficient, as well as the short-circuit rated for 6 microseconds value. AUIRG7CH80K6B-M are currently available in die form.
The new devices meet the automotive industry standard is to IR, developed under the concept of zero-defect quality.
International Rectifier Corporation, referred to IR, introduced the use of welding metal (Solderable Front Metal, SFM) of 1200V insulated gate bipolar transistors (IGBT) AUIRG7CH80K6B-M, for electric vehicle (EV), hybrid electric vehicle (HEV), and the power drive high-current, high-voltage automotive Inverter Module.
AUIRG7CH80K6B-M uses IR The latest generation of field cut-off trench technology to significantly reduce conduction and switching losses. In addition, the new device can be realized before welding metal double-sided cooling, improved thermal performance, removed the wire, so as to achieve a higher reliability.
IR Pan Dawei, vice president of Asia Sales, said: "All along, the wire are the cars Inverter Module failure of the underlying factors. The use of metal before welding AUIRG7CH80K6B-M to use wire-free packaging technology and has double-sided cooling features, improves thermal performance and efficiency, as well as the Inverter The module reliability. "
The new devices also include other major performance advantages of a square reverse bias safe operating area (RBSOA), up to 175 degrees Celsius maximum operating temperature, the peak turn-off capabilities, are VCE (on) temperature coefficient, as well as the short-circuit rated for 6 microseconds value. AUIRG7CH80K6B-M are currently available in die form.
The new devices meet the automotive industry standard is to IR, developed under the concept of zero-defect quality.
Solar Photovoltaic Industry to Seek Economic Breakthrough
Solar Photovoltaic Industry to Seek Economic Breakthrough 
When the early morning sunlight that will reach the roof of the Electric Company, the trial of the PV grid-connected inverter started to solar energy into alternating current. Elpida Shunde Electric photovoltaic industry as the only one to master inverter technology companies, represents an emerging industry, the seeds of Shunde, Shunde has also set off a new revolution in the development of photovoltaic industry.
Grid-connected inverter for photovoltaic research and development, will head up to electrical appliances, Liu Tsung-side from the groping success of the last test run, with the next six years to master the core technology, stood in the photovoltaic industry, the development of high ground.
October 19, the National Development and Reform Commission and other 10 departments jointly held a curb overcapacity in some industries and duplication of an information briefing, once again stressed the polysilicon industry, overcapacity, and to put forward a series of its guidance and restrictions on development initiatives. Have a newEnergyThe concept of solar photovoltaic industry has been named duplicate construction, sometimes caused by market and industry attention.
Just last August, Foshan City, Shunde District Government issued the "Shunde District, Interim Measures for the promotion of solar energy photovoltaic industry," To this end, Shunde District Government will develop, "30000 Solar Roofs Plan", organized by photovoltaic Development Forum established PV development awards to create "hundreds of billions of photovoltaic Shunde Industrial Park," and to support the establishment of 200 million yuan in special funds. Deputy secretary of Shunde District, on behalf of the Divisional Officer Liang Dong stated clearly: "photovoltaic industry is an important Shunde to cultivate new industries, hoping to cultivate the photovoltaic industry, becoming a new pillar industry." But Shunde, this "grand plan", hit In the national policy on gun control. Shunde-charge if he has been ready to blaze a new path different from others?
Reform and opening up of the appliances, "Shunde mode" Wei Ren still relish. Reform and opening up 30 years later, industrial upgrading has become the moment local governments in the thought-provoking questions, Shunde PV industry to create this new economic pillars, can run into a new mode?
When the early morning sunlight that will reach the roof of the Electric Company, the trial of the PV grid-connected inverter started to solar energy into alternating current. Elpida Shunde Electric photovoltaic industry as the only one to master inverter technology companies, represents an emerging industry, the seeds of Shunde, Shunde has also set off a new revolution in the development of photovoltaic industry.
Grid-connected inverter for photovoltaic research and development, will head up to electrical appliances, Liu Tsung-side from the groping success of the last test run, with the next six years to master the core technology, stood in the photovoltaic industry, the development of high ground.
October 19, the National Development and Reform Commission and other 10 departments jointly held a curb overcapacity in some industries and duplication of an information briefing, once again stressed the polysilicon industry, overcapacity, and to put forward a series of its guidance and restrictions on development initiatives. Have a newEnergyThe concept of solar photovoltaic industry has been named duplicate construction, sometimes caused by market and industry attention.
Just last August, Foshan City, Shunde District Government issued the "Shunde District, Interim Measures for the promotion of solar energy photovoltaic industry," To this end, Shunde District Government will develop, "30000 Solar Roofs Plan", organized by photovoltaic Development Forum established PV development awards to create "hundreds of billions of photovoltaic Shunde Industrial Park," and to support the establishment of 200 million yuan in special funds. Deputy secretary of Shunde District, on behalf of the Divisional Officer Liang Dong stated clearly: "photovoltaic industry is an important Shunde to cultivate new industries, hoping to cultivate the photovoltaic industry, becoming a new pillar industry." But Shunde, this "grand plan", hit In the national policy on gun control. Shunde-charge if he has been ready to blaze a new path different from others?
Reform and opening up of the appliances, "Shunde mode" Wei Ren still relish. Reform and opening up 30 years later, industrial upgrading has become the moment local governments in the thought-provoking questions, Shunde PV industry to create this new economic pillars, can run into a new mode?
2009年11月21日星期六
Opening Ceremony of International Hi-Tech Fair in Shenzhen
Opening Ceremony of International Hi-Tech Fair in Shenzhen 
Solar power is a kind of "green" energy generation system, the main template to collect solar energy generated by solar direct current into alternating current through the inverter for the use of people's production and life, is widely used in factories, tall buildings and the general population at home, in this high cross-conference, Section Lu converter is not only to show the image of the special inverter experts, but also establish a green energy engineering expert's image.
November 16, the eleventh China International Hi-Tech Fair opened at the Shenzhen Convention and Exhibition Center, China's economic situation keeps on getting better, making known as "China Science and Technology 1st Exhibition"'s fair for the enterprise to bring a more Great opportunity For this reason, Section land conversion to bring the core products CL2700 SeriesHigh Inverter Speed control system and the latest successful development of the CL100 PV Inverter Be greenEnergyJin Xian engineering expert's image in front of people.
As early as September interview subjects Lu Inverter Managing Deputy General Manager Mr. Chen Huiming, he once said had the company is working with Northeastern UniversityCooperationDevelopment of solar photovoltaic inverter, is expected to pre-empt the debut at this year's high cross. Sure enough, the reporter in order to land conversion booth Section found this machine, known as CL100 photovoltaic inverter new product, which uses three-phase four-arm main circuit structure, the complex three-phase voltage control into a single-phase Power Control, both with linear and balanced load, which can also carry non-linear and non-load balancing. The output voltage through independent control of amplitude and phase to three-phase four-wire system has and the public think he has the power grid characteristics and performance, especially for large-scale photovoltaic power plant applications.
Solar power is a kind of "green" energy generation system, the main template to collect solar energy generated by solar direct current into alternating current through the inverter for the use of people's production and life, is widely used in factories, tall buildings and the general population at home, in this high cross-conference, Section Lu converter is not only to show the image of the special inverter experts, but also establish a green energy engineering expert's image.
Solar power is a kind of "green" energy generation system, the main template to collect solar energy generated by solar direct current into alternating current through the inverter for the use of people's production and life, is widely used in factories, tall buildings and the general population at home, in this high cross-conference, Section Lu converter is not only to show the image of the special inverter experts, but also establish a green energy engineering expert's image.
November 16, the eleventh China International Hi-Tech Fair opened at the Shenzhen Convention and Exhibition Center, China's economic situation keeps on getting better, making known as "China Science and Technology 1st Exhibition"'s fair for the enterprise to bring a more Great opportunity For this reason, Section land conversion to bring the core products CL2700 SeriesHigh Inverter Speed control system and the latest successful development of the CL100 PV Inverter Be greenEnergyJin Xian engineering expert's image in front of people.
As early as September interview subjects Lu Inverter Managing Deputy General Manager Mr. Chen Huiming, he once said had the company is working with Northeastern UniversityCooperationDevelopment of solar photovoltaic inverter, is expected to pre-empt the debut at this year's high cross. Sure enough, the reporter in order to land conversion booth Section found this machine, known as CL100 photovoltaic inverter new product, which uses three-phase four-arm main circuit structure, the complex three-phase voltage control into a single-phase Power Control, both with linear and balanced load, which can also carry non-linear and non-load balancing. The output voltage through independent control of amplitude and phase to three-phase four-wire system has and the public think he has the power grid characteristics and performance, especially for large-scale photovoltaic power plant applications.
Solar power is a kind of "green" energy generation system, the main template to collect solar energy generated by solar direct current into alternating current through the inverter for the use of people's production and life, is widely used in factories, tall buildings and the general population at home, in this high cross-conference, Section Lu converter is not only to show the image of the special inverter experts, but also establish a green energy engineering expert's image.
New Sensor Technology in Driving the Development of Rail Transport
New Sensor Technology in Driving the Development of Rail Transport
With the rapid development of semiconductor technology, in a modern advanced city subway, light rail vehicles, traction control system and auxiliary power supply system, are used in the way VVVF VVVF inverter and the CVCF auxiliary inverter. And Route AC - Straight - AC drive locomotive, as current sensors and voltage sensors are also used in the above-mentioned system, a large number of DC and AC loop, in order to achieve closed-loop control of the whole system.
However, the urban railTrafficPairs of sensor technology to promote the biggest lies in wireless sensor network technology, infrared sensor technology, force sensors, gas sensors, speed sensors and photoelectric sensors and other new sensors, rather than current sensors and voltage sensors and other traditional sensors. IronElectricalOf Investigation Design & Research Institute Co., Ltd., deputy chief engineer, senior engineer and International Project ManagementExpertWang pointed out that the co-operation, "in metro areas, with the ventilation and air conditioning-related, such as temperature and humidity and CO2 sensors, and prevent terrorism on a number of toxic gas sensors have a high demand and technological content. In high-speed EMUs areas, with the closed compartments, the amount of monitoring and oxygen supply, earthquakes, speed monitoring, HotboxDetectionConnecting parts of loose monitoring of foreign bodies and other related sensors to monitor the demand is very high, these technologies are still evolving and incomplete. TheAlarmGrab type sensors, such as broken glass, high-pressure chamber, incorrect access, and cable raiding sensors are very important. "Wang co-operation further pointed out that these sensors and systems equipment, and personalSafeAre closely related.
In urban rail transit vehicles, air-conditioning system, often used sensors andEMatched by the temperature control thermostat. Multi-use electronic thermostat regulator, sensors for temperature detection, commonly used for thermocouple or thermistor sensors. In the guest room, because of people's breath, carbon dioxide (CO2) levels will increase, while increased to a certain concentration, can affect human health, the belongings of passengers in the car produced harmful gases also make the air inside the vehicle become polluted, requiring the world a fresh air to the car to a certain degree of replacement of the air, so the precise detection of the gas sensor becomes particularly important.
With the rapid development of semiconductor technology, in a modern advanced city subway, light rail vehicles, traction control system and auxiliary power supply system, are used in the way VVVF VVVF inverter and the CVCF auxiliary inverter. And Route AC - Straight - AC drive locomotive, as current sensors and voltage sensors are also used in the above-mentioned system, a large number of DC and AC loop, in order to achieve closed-loop control of the whole system.
However, the urban railTrafficPairs of sensor technology to promote the biggest lies in wireless sensor network technology, infrared sensor technology, force sensors, gas sensors, speed sensors and photoelectric sensors and other new sensors, rather than current sensors and voltage sensors and other traditional sensors. IronElectricalOf Investigation Design & Research Institute Co., Ltd., deputy chief engineer, senior engineer and International Project ManagementExpertWang pointed out that the co-operation, "in metro areas, with the ventilation and air conditioning-related, such as temperature and humidity and CO2 sensors, and prevent terrorism on a number of toxic gas sensors have a high demand and technological content. In high-speed EMUs areas, with the closed compartments, the amount of monitoring and oxygen supply, earthquakes, speed monitoring, HotboxDetectionConnecting parts of loose monitoring of foreign bodies and other related sensors to monitor the demand is very high, these technologies are still evolving and incomplete. TheAlarmGrab type sensors, such as broken glass, high-pressure chamber, incorrect access, and cable raiding sensors are very important. "Wang co-operation further pointed out that these sensors and systems equipment, and personalSafeAre closely related.
In urban rail transit vehicles, air-conditioning system, often used sensors andEMatched by the temperature control thermostat. Multi-use electronic thermostat regulator, sensors for temperature detection, commonly used for thermocouple or thermistor sensors. In the guest room, because of people's breath, carbon dioxide (CO2) levels will increase, while increased to a certain concentration, can affect human health, the belongings of passengers in the car produced harmful gases also make the air inside the vehicle become polluted, requiring the world a fresh air to the car to a certain degree of replacement of the air, so the precise detection of the gas sensor becomes particularly important.
2009年11月20日星期五
Requirements of the Inverter in the Applications
Requirements of the Inverter in the Applications:
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 a reasonable inverter circuit structure, strict component selection, 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.DC input voltage required 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 to change fluctuate, 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 range to ensure the normal 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.
Inverter DC into the AC, if the DC voltage is low, then the step-up transformer through the exchange, that is to be the standard AC voltage and frequency. Large capacity inverter, DC bus voltage due to higher output generally does not require the exchange of step-up transformer that is able to reach 220V, in the medium and small capacity inverter, due to low DC voltage such as 12V, 24V, must be designed on the boost circuit.
Medium and small-capacity inverters generally have a push-pull inverter circuits, full-bridge inverter circuits, and three kinds of high-frequency boost inverter circuit, push-pull circuit, the step-up transformer is connected to the neutral plug power supply, 2 alternating power tube to work out an exchange of power, as power transistors were to side access, drive and control circuit is simple, while the transformer has a certain amount of leakage inductance, limit short-circuit current, thereby enhancing the reliability of the circuit. The disadvantage is the transformer utilization is low, less able to drive inductive loads.
Full-bridge inverter circuit to overcome the shortcomings of the push-pull circuit, power transistor adjusts the output pulse width, the output AC voltage of the RMS that is changed. Since the circuit has a freewheeling circuit, even for the inductive load, the output voltage waveform distortion will not. The disadvantage of the circuit on the bridge arm of the power transistor is not common ground, it must use special driver circuit or using isolated power supplies. In addition, in order to prevent the upper and lower co-arm conduction occurs, must be designed to first bring up the rear turn-off circuit, that is, you must set the dead-time, its circuit structure is more complicated.
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 a reasonable inverter circuit structure, strict component selection, 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.DC input voltage required 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 to change fluctuate, 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 range to ensure the normal 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.
Inverter DC into the AC, if the DC voltage is low, then the step-up transformer through the exchange, that is to be the standard AC voltage and frequency. Large capacity inverter, DC bus voltage due to higher output generally does not require the exchange of step-up transformer that is able to reach 220V, in the medium and small capacity inverter, due to low DC voltage such as 12V, 24V, must be designed on the boost circuit.
Medium and small-capacity inverters generally have a push-pull inverter circuits, full-bridge inverter circuits, and three kinds of high-frequency boost inverter circuit, push-pull circuit, the step-up transformer is connected to the neutral plug power supply, 2 alternating power tube to work out an exchange of power, as power transistors were to side access, drive and control circuit is simple, while the transformer has a certain amount of leakage inductance, limit short-circuit current, thereby enhancing the reliability of the circuit. The disadvantage is the transformer utilization is low, less able to drive inductive loads.
Full-bridge inverter circuit to overcome the shortcomings of the push-pull circuit, power transistor adjusts the output pulse width, the output AC voltage of the RMS that is changed. Since the circuit has a freewheeling circuit, even for the inductive load, the output voltage waveform distortion will not. The disadvantage of the circuit on the bridge arm of the power transistor is not common ground, it must use special driver circuit or using isolated power supplies. In addition, in order to prevent the upper and lower co-arm conduction occurs, must be designed to first bring up the rear turn-off circuit, that is, you must set the dead-time, its circuit structure is more complicated.
Theory and Application of Inverter in Photovoltaic Power Generation System
Theory and Application of Inverter in Photovoltaic Power Generation System
Source: International New Energy Network
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.
In addition, the photovoltaic power generation will eventually be achieved and network operation, which must be a mature market model, the exchange of photovoltaic power generation system in the future will become the mainstream of photovoltaic power generation.
Source: International New Energy Network
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.
In addition, the photovoltaic power generation will eventually be achieved and network operation, which must be a mature market model, the exchange of photovoltaic power generation system in the future will become the mainstream of photovoltaic power generation.
2009年11月19日星期四
The Product Certification of Grid-connected Photovoltaic Power Inverter Promotes the Development of Optical Grid-connected
The Product Certification of Grid-connected Photovoltaic Power Inverter Promotes the Development of Optical Grid-connected 
Time :2009-11-6 10:09:18 Author: Sobey Solar Source: Solarbe.com
"Authentication technology standard management approach" resolves trade problems
In August 2009 by the Beijing-led Jianheng Certification Center, Hefei Sunlight Solar Energy Power Co., Ltd., Beijing Corona, China Electric Power Research Institute and other units are involved, according to the national commission "authentication technology standard management approach" and "authentication technology standardized management approach to the implementation details "requirements, co-drafted a certified technical specifications CGC/GF001: 2009" 400V following grid-connected photovoltaic inverter specific technical requirements and test methods ", and successfully at the national Certification and Accreditation Administration of the record, the record number To: CNCA/CTS0004-2009. In the grid-connected photovoltaic inverter national standard, industry-standard missing cases, the release of the certification specifications for China to implement grid-connected photovoltaic inverter to provide the healthy development of a scientific and rational technical basis.
The main technical specifications of the certification requirements include: performance and safety of two parts. Performance of some of China's power grid in accordance with the requirements of the development, including: power quality and protection. Among them, power quality testing project inverter efficiency, and net current harmonics, power factor, operating voltage, operating frequency, dc component, noise; the protection of functional testing project power fault protection, anti-anti-discharge protection, anti-polarity access protection, overload protection, anti-island test. Some refer to the relevant safety standards at home and abroad, including: electromagnetic compatibility and insulation withstand voltage, in which electromagnetic compatibility including: voltage fluctuation and flicker, launch requirements, immunity; insulation withstand voltage requirements in accordance with China's power sector development, including: insulation resistance and dielectric strength. Overall, the technical specification is in line with China's national conditions, with international advanced level of technical standards.
The product certification of grid-connected photovoltaic inverter is recognized by China's PV Industry
Currently, grid-connected photovoltaic inverter certification and implementation rules have been finalized and testing agencies have tested with the corresponding ability to work has become fully certified. Hefei sun 250KW, 100KW grid-connected inverter has passed the test, Beijing on good power supply, Beijing Corona and 5KW to 20KW, and grid-connected inverter is also about to complete the test. Germany, Austria, Spain and other enterprises are also ready to submit applications for accreditation.
Time :2009-11-6 10:09:18 Author: Sobey Solar Source: Solarbe.com
"Authentication technology standard management approach" resolves trade problems
In August 2009 by the Beijing-led Jianheng Certification Center, Hefei Sunlight Solar Energy Power Co., Ltd., Beijing Corona, China Electric Power Research Institute and other units are involved, according to the national commission "authentication technology standard management approach" and "authentication technology standardized management approach to the implementation details "requirements, co-drafted a certified technical specifications CGC/GF001: 2009" 400V following grid-connected photovoltaic inverter specific technical requirements and test methods ", and successfully at the national Certification and Accreditation Administration of the record, the record number To: CNCA/CTS0004-2009. In the grid-connected photovoltaic inverter national standard, industry-standard missing cases, the release of the certification specifications for China to implement grid-connected photovoltaic inverter to provide the healthy development of a scientific and rational technical basis.
The main technical specifications of the certification requirements include: performance and safety of two parts. Performance of some of China's power grid in accordance with the requirements of the development, including: power quality and protection. Among them, power quality testing project inverter efficiency, and net current harmonics, power factor, operating voltage, operating frequency, dc component, noise; the protection of functional testing project power fault protection, anti-anti-discharge protection, anti-polarity access protection, overload protection, anti-island test. Some refer to the relevant safety standards at home and abroad, including: electromagnetic compatibility and insulation withstand voltage, in which electromagnetic compatibility including: voltage fluctuation and flicker, launch requirements, immunity; insulation withstand voltage requirements in accordance with China's power sector development, including: insulation resistance and dielectric strength. Overall, the technical specification is in line with China's national conditions, with international advanced level of technical standards.
The product certification of grid-connected photovoltaic inverter is recognized by China's PV Industry
Currently, grid-connected photovoltaic inverter certification and implementation rules have been finalized and testing agencies have tested with the corresponding ability to work has become fully certified. Hefei sun 250KW, 100KW grid-connected inverter has passed the test, Beijing on good power supply, Beijing Corona and 5KW to 20KW, and grid-connected inverter is also about to complete the test. Germany, Austria, Spain and other enterprises are also ready to submit applications for accreditation.
High-power Inverter Cabinet of Electric Locomotive Rolls Off the Production Line in Zhuzhou
High-power Inverter Cabinet of Electric Locomotive Rolls Off the Production Line in Zhuzhou
http://www.rednet.cn/ 2009-11-4 9:38:48 Red Net
Red Net News, November 3 (Journalist Zhou Huaili& Li Wenfeng, Reporter Jiang Liuqing& Sun Yanfei) Recently, Lince Group Co., Ltd. In Zhuzhou, Hunan held the rollout ceremony of world's largest powerACTransmission six-axis 9600 kilowatts electric locomotive inverter in its workshop, which exported steel structure products. It also marked the successful localization of this kind of inverter.
It is said that this type of inverter cabinet is one of the important parts of the world's largest six-axis power of 9600 kilowatts of AC drive electric locomotives, which is mainly produced for Nanche Zhuzhou Electric Locomotive Co., Ltd., which produces such locomotives designed by German Siemens, undertaken by Zhuzhou Siemens Traction Equipment Ltd., and prodeced by Zhuzhou Lince Group Co., Ltd. Before the first piece before the product off the assembly line, "Zhuzhou Lian-cheng" trial of the two products by Siemens Traction Equipment Ltd., Zhuzhou, examined by an expert, that the company produced the inverter enclosure fully meet the design requirements.
The inverter enclosure smooth off the assembly line, marking the "Zhuzhou Lian-cheng" large screen cabinet manufacturing process level has been a major upgrade to the company to create new economic growth point. At present, the company signed the first inverter enclosure 180 has entered mass production stage.
http://www.rednet.cn/ 2009-11-4 9:38:48 Red Net
Red Net News, November 3 (Journalist Zhou Huaili& Li Wenfeng, Reporter Jiang Liuqing& Sun Yanfei) Recently, Lince Group Co., Ltd. In Zhuzhou, Hunan held the rollout ceremony of world's largest powerACTransmission six-axis 9600 kilowatts electric locomotive inverter in its workshop, which exported steel structure products. It also marked the successful localization of this kind of inverter.
It is said that this type of inverter cabinet is one of the important parts of the world's largest six-axis power of 9600 kilowatts of AC drive electric locomotives, which is mainly produced for Nanche Zhuzhou Electric Locomotive Co., Ltd., which produces such locomotives designed by German Siemens, undertaken by Zhuzhou Siemens Traction Equipment Ltd., and prodeced by Zhuzhou Lince Group Co., Ltd. Before the first piece before the product off the assembly line, "Zhuzhou Lian-cheng" trial of the two products by Siemens Traction Equipment Ltd., Zhuzhou, examined by an expert, that the company produced the inverter enclosure fully meet the design requirements.
The inverter enclosure smooth off the assembly line, marking the "Zhuzhou Lian-cheng" large screen cabinet manufacturing process level has been a major upgrade to the company to create new economic growth point. At present, the company signed the first inverter enclosure 180 has entered mass production stage.
[Draft Source: Hunan Daily]
[Author: Zhou Huaili& Li Wenfeng]
[Editor: Wang Pingping]
2009年11月18日星期三
The German Market Shows A Strong Momentum of Development: Phoenix Inverter and Its Components Are In Short Supply
The German Market Shows A Strong Momentum of Development: Phoenix Inverter and Its Components Are In Short Supply
Germany's overheated housing market, allowing system integrators Phoenix Solar'sbusiness has also been warmer. As of the end, Phoenix's solar inverters and solar power components may occur shortage.
The company released third-quarter earnings in 2009, when pointed out that the first half of the component prices continue to decline in Germany. While prices stabilized in the third quarter, Phoenix solar orders in large numbers. With higher returns, as well as falling prices, the German market will continue to flourish.
Phoenix Solar Company expects this year is the year of Germany's most dramatic history, although the initial momentum of development is slow, but this year the amount of solar energy installation will be much higher than in 2008. The company expects to install additional capacity in Germany this year will reach 2.5GW, and in 2008 an increase of 60%.
Phoenix Solar also said that in November the amount will be the installation of 400MW, while the history of the highest installed capacity of 300MW. Public utilities, it was once under the solar energy projects so that the German market malaise. Financial assistance is not enough restrictions on the development of the project. More importantly, the process of obtaining funding in accordance with strict standards, bank loans are no longer applicable, which leads to delays in many projects. This situation also affected the Phoenix solar energy, there are a lot of orders have been delayed.
The company pointed out that the Spanish market, funding problems have emerged in the region, only to install 130MW.
However, the Spanish market may delay improvement projects, which could alleviate the need for built in 2010 needed projects.
Components of the Italian market during the first half of this year prices fell, with the attendant reduction in installation volume. Steady increase in the price and supply, making the demand has to pick up, installation of this year, the amount could reach 250MW.
The French market is gradually improving, but faces a long-term need for the approval process, the installation of the amount of all prejudice. Even so, the French market is expected to reach 150 MW this year.
(Translated by Solarbe.com)
Time :2009-11-16 14:32:45 Author: Sobey Solar Source: PV-tech
Germany's overheated housing market, allowing system integrators Phoenix Solar's
business has also been warmer. As of the end, Phoenix's solar inverters and solar power components may occur shortage.The company released third-quarter earnings in 2009, when pointed out that the first half of the component prices continue to decline in Germany. While prices stabilized in the third quarter, Phoenix solar orders in large numbers. With higher returns, as well as falling prices, the German market will continue to flourish.
Phoenix Solar Company expects this year is the year of Germany's most dramatic history, although the initial momentum of development is slow, but this year the amount of solar energy installation will be much higher than in 2008. The company expects to install additional capacity in Germany this year will reach 2.5GW, and in 2008 an increase of 60%.
Phoenix Solar also said that in November the amount will be the installation of 400MW, while the history of the highest installed capacity of 300MW. Public utilities, it was once under the solar energy projects so that the German market malaise. Financial assistance is not enough restrictions on the development of the project. More importantly, the process of obtaining funding in accordance with strict standards, bank loans are no longer applicable, which leads to delays in many projects. This situation also affected the Phoenix solar energy, there are a lot of orders have been delayed.
The company pointed out that the Spanish market, funding problems have emerged in the region, only to install 130MW.
However, the Spanish market may delay improvement projects, which could alleviate the need for built in 2010 needed projects.
Components of the Italian market during the first half of this year prices fell, with the attendant reduction in installation volume. Steady increase in the price and supply, making the demand has to pick up, installation of this year, the amount could reach 250MW.
The French market is gradually improving, but faces a long-term need for the approval process, the installation of the amount of all prejudice. Even so, the French market is expected to reach 150 MW this year.
(Translated by Solarbe.com)
The Standard of Grid-connected Photovoltaic Power Inverter Is Missing
The Standard of Grid-connected Photovoltaic Power Inverter Is Missing
2009-11-6 14:12:58 Source: International New Energy Network Netcitizens’ Reviews
Grid-connected photovoltaic power generation and grid-connected photovoltaic inverter is one of the important parts of a power generation system, its main role is to DC into AC power supply can be used as a load converter, which is the inverse transform function of the rectifier devices. As the issue of grid-connected photovoltaic systems is that DC, if you want to share the load power, we need to equipped with inverter. Inverter through the semiconductor power switch turn-on and turn-off effect can be transformed into alternating current to direct current, is the inverse transformation process of rectification.
In view of grid-connected photovoltaic power inverter the importance of its quality will directly affect the safety of the local power grid, as well as the user's personal and property safety, for which the State "Golden Sun Demonstration Project" where the request and grid system uses the key to parts to go through domestic product certification. However, China's photovoltaic standard system is not perfect, there has been no published national grid inverter on national standards and industry standards, product certification, lack of technical basis, this is my country and grid-connected inverter product quality evaluation and enhancement of skills , and even China and the development of grid-connected photovoltaic power generation market had an adverse impact.
2009-11-6 14:12:58 Source: International New Energy Network Netcitizens’ Reviews
Grid-connected photovoltaic power generation and grid-connected photovoltaic inverter is one of the important parts of a power generation system, its main role is to DC into AC power supply can be used as a load converter, which is the inverse transform function of the rectifier devices. As the issue of grid-connected photovoltaic systems is that DC, if you want to share the load power, we need to equipped with inverter. Inverter through the semiconductor power switch turn-on and turn-off effect can be transformed into alternating current to direct current, is the inverse transformation process of rectification.
In view of grid-connected photovoltaic power inverter the importance of its quality will directly affect the safety of the local power grid, as well as the user's personal and property safety, for which the State "Golden Sun Demonstration Project" where the request and grid system uses the key to parts to go through domestic product certification. However, China's photovoltaic standard system is not perfect, there has been no published national grid inverter on national standards and industry standards, product certification, lack of technical basis, this is my country and grid-connected inverter product quality evaluation and enhancement of skills , and even China and the development of grid-connected photovoltaic power generation market had an adverse impact.
2009年11月17日星期二
Three Ministries Speed up the Progress of Implementation of "Golden Sun" Project
Three Ministries Speed up the Progress of Implementation of "Golden Sun" Project
2009/11/17/09: 08 Source: Securities Star
Recently, the Ministry of Finance, Ministry of Science, the National Energy Agency jointly released the "good" Golden Sun "demonstration project implementation of the notice" to speed up the implementation of the "Golden Sun" demonstration project. This indicates that the photovoltaic industry, the attitude of the government care to promote the development of PV market determination.
According to estimates, to 70 U.S. dollars / kg of polysilicon unit price calculation, the total component cost of 1.54 U.S. dollars / Wp, equivalent to 10.47 yuan / Wp, with price-cap 14 yuan / Wp basis, gross margins reach 25.2%, for components manufacturers, 14 yuan / Wp unit price is acceptable.
2009/11/17/09: 08 Source: Securities Star
Recently, the Ministry of Finance, Ministry of Science, the National Energy Agency jointly released the "good" Golden Sun "demonstration project implementation of the notice" to speed up the implementation of the "Golden Sun" demonstration project. This indicates that the photovoltaic industry, the attitude of the government care to promote the development of PV market determination.
According to estimates, to 70 U.S. dollars / kg of polysilicon unit price calculation, the total component cost of 1.54 U.S. dollars / Wp, equivalent to 10.47 yuan / Wp, with price-cap 14 yuan / Wp basis, gross margins reach 25.2%, for components manufacturers, 14 yuan / Wp unit price is acceptable.
Sunlight Supply PV inverter obtained the U.S. ETL Certification
Sunlight Supply PV inverter obtained the U.S. ETL Certification
Time :2009-11-16 9:47:22 Author: Sobey Solar Source: shine light magazine
The sun power to obtain ETL certification of its products at the same time fully consistent with the United States and Canada relating to the strict standards of inspection and testing, free circulation in the North American market. Recently, Hefei Sunlight Power Supply Co., a large-scale production of photovoltaic grid-connected inverter successfully passed the United States, ETL certification, this is the first of China's PV inverter industry, through the certification business.
ETL certification is based on product certification issued by North American standards, but also at the same time issued in accordance with Canadian National Standard Test composite certification mark. This is also the same time, the sun Power Sun Access series of photovoltaic products obtained following the TÜV, CE, China's "Golden Sun" certification after another international authority to obtain certification, demonstrating their growing technical strength and a strong sense of quality goods, which will surely help to accelerate the pace of opening up the North American market, continuously improve the sun products in the international market share and reputation.ETL certified to obtain the product that they meet the appropriate North American safety standards and the adoption of the U.S. National Accreditation Testing Laboratory (NRTL) test, but also on behalf of the manufacturers agreed to receive a strict regular inspections to ensure product quality and consistency.
Time :2009-11-16 9:47:22 Author: Sobey Solar Source: shine light magazine
The sun power to obtain ETL certification of its products at the same time fully consistent with the United States and Canada relating to the strict standards of inspection and testing, free circulation in the North American market. Recently, Hefei Sunlight Power Supply Co., a large-scale production of photovoltaic grid-connected inverter successfully passed the United States, ETL certification, this is the first of China's PV inverter industry, through the certification business.
ETL certification is based on product certification issued by North American standards, but also at the same time issued in accordance with Canadian National Standard Test composite certification mark. This is also the same time, the sun Power Sun Access series of photovoltaic products obtained following the TÜV, CE, China's "Golden Sun" certification after another international authority to obtain certification, demonstrating their growing technical strength and a strong sense of quality goods, which will surely help to accelerate the pace of opening up the North American market, continuously improve the sun products in the international market share and reputation.ETL certified to obtain the product that they meet the appropriate North American safety standards and the adoption of the U.S. National Accreditation Testing Laboratory (NRTL) test, but also on behalf of the manufacturers agreed to receive a strict regular inspections to ensure product quality and consistency.
Hefei Sunlight Power Supply PV grid-connected inverter SG3KTL / SG4KTL will be available in January next year
Hefei Sunlight Power Supply PV grid-connected inverter SG3KTL / SG4KTL will be available in January next year
Communication:
· RS485 / Ethernet / GPRS Communication Interface
* Computer Monitoring Software
Safety:
* Improve the protection function: over-voltage protection, short circuit protection, isolated island protection, thermal protection, overload protection
* Standard: EN61000-6-1, EN61000-6-2, EN61000-6-3, EN61000-6-4, EN61000-3-2, EN61000-3-3, EN60164-1-1, EN55022, EN50178
Features:
• High conversion efficiency up to 97.3%
* Outdoor design (IP54) to adapt to the harsh use of the environment
* Maximum Power Point Tracking (MPPT) efficiency of "99.9%
* Multi-lingual LCD display features are free to set the
* A variety of communication interfaces to choose from, can easily monitor the realization of host computer
* Improved protection, greater reliability of the system
* Wide DC input voltage range
* User-friendly interface, by pressing a button to set the various operating parameters
* Can be realized combination of multiple inverters in parallel operation of power plants designed to simplify
* High-quality aluminum design, small size, light weight, easy to install
* Adapt to high altitude applications ( "6000 meters)
* Dip waterproof terminal
* European CE certification
Overview:
SG3KTL / 4KTL transformer-free design, a higher conversion efficiency, compact appearance, small size and light weight. Port using inline waterproof terminals, wiring convenient, safe and reliable. Applies to household-based small-scale photovoltaic power plants can also be group of strings to use.
Communication:
· RS485 / Ethernet / GPRS Communication Interface
* Computer Monitoring Software
Safety:
* Improve the protection function: over-voltage protection, short circuit protection, isolated island protection, thermal protection, overload protection
* Standard: EN61000-6-1, EN61000-6-2, EN61000-6-3, EN61000-6-4, EN61000-3-2, EN61000-3-3, EN60164-1-1, EN55022, EN50178
Features:
• High conversion efficiency up to 97.3%
* Outdoor design (IP54) to adapt to the harsh use of the environment
* Maximum Power Point Tracking (MPPT) efficiency of "99.9%
* Multi-lingual LCD display features are free to set the
* A variety of communication interfaces to choose from, can easily monitor the realization of host computer
* Improved protection, greater reliability of the system
* Wide DC input voltage range
* User-friendly interface, by pressing a button to set the various operating parameters
* Can be realized combination of multiple inverters in parallel operation of power plants designed to simplify
* High-quality aluminum design, small size, light weight, easy to install
* Adapt to high altitude applications ( "6000 meters)
* Dip waterproof terminal
* European CE certification
Overview:
SG3KTL / 4KTL transformer-free design, a higher conversion efficiency, compact appearance, small size and light weight. Port using inline waterproof terminals, wiring convenient, safe and reliable. Applies to household-based small-scale photovoltaic power plants can also be group of strings to use.
2009年11月14日星期六
SMA Group Invested in Inverter Production in the U.S.A.
SMA Group Invested in Inverter Production in the U.S.A.
Core Tip: SMA Group has signed an agreement on plant construction, which was declared by SMA "the nation's largest photovoltaic inverter manufacturing plant". SMA has signed a long-term agreement with the local owner of land and construction. In addition, the local factory location has also begun to negotiate.
SMA Group will set up an inverter production plant in Denver, Colorado, which will be the first
inverter plant outside German.
The annual capacity of this plant is approximately 1GW. It planed to put into production in mid 2010 and the estimated investment was about 15 million U.S. dollars. The new SMA United States plant will produce new products supplying for the North American market, whose product series are the Sunny Boy, Sunny Central and Sunny Island.
"For a medium-term, we can expect that the U.S. market will become the world's largest one in solar market." Chief Executive Officer Günther Cramer from SMA Solar Technology, Inc. said, "Due to the construction of the new Denver facility, SMA will reduce the transportation and temporary storage costs, and currency exchange rates risk. "
Core Tip: SMA Group has signed an agreement on plant construction, which was declared by SMA "the nation's largest photovoltaic inverter manufacturing plant". SMA has signed a long-term agreement with the local owner of land and construction. In addition, the local factory location has also begun to negotiate.
SMA Group will set up an inverter production plant in Denver, Colorado, which will be the first
inverter plant outside German. The annual capacity of this plant is approximately 1GW. It planed to put into production in mid 2010 and the estimated investment was about 15 million U.S. dollars. The new SMA United States plant will produce new products supplying for the North American market, whose product series are the Sunny Boy, Sunny Central and Sunny Island.
"For a medium-term, we can expect that the U.S. market will become the world's largest one in solar market." Chief Executive Officer Günther Cramer from SMA Solar Technology, Inc. said, "Due to the construction of the new Denver facility, SMA will reduce the transportation and temporary storage costs, and currency exchange rates risk. "
Input Rectifier and Output Inverter
Input Rectifiers: From the three-phase power supply current of each phase first introduced. The introduction of non-sinusoidal current, and not as a standard AC sine wave, as the conversion process but in the rectifier distortion generated. Distortion means that the supply current waveform contains harmonics due to distortion of the waveform can be decomposed into a set of sinusoidal components, both people are talking about harmonics. As the power supply is a standard symmetrical three-phase power, while the rectifier is a part of the open-loop is not controllable, so the harmonics of the "second" number is certain, so harmonics generated by rectifier part of the very few.
The output inverter: DC flowing through the filter capacitor filter and high-power IGBT inverter transistor switching elements for the exchange of variable frequency voltage. In the inverter output circuit, the output current is modulated by the PWM carrier signal pulse shape, high-power inverter for the GTR components, and its PWM carrier frequency of 2 ~ 3kHz, while the IGBT inverter high-power components, the maximum PWM carrier frequency can be up to 15kHz. Similarly, the output loop current of sine wave can be decomposed into only with the fundamental and other harmonics, the main harmonic frequency for the first time (fundamental, 50Hz), the fifth harmonic (250Hz) the seventh harmonic wave (350Hz), the 11th harmonic (550Hz), the 13th harmonic (650Hz). We are working mechanism from the inverter can be seenInverterMost of the harmonics and interference are generated in the inverter, the high-order harmonic current of load there is a direct interference (when the role of the motor when the motor manifestations were fever, sound ugly. When the role of analog devices when the , meter pointer and readings bounce, these phenomena are subject to interference phenomena), the other high-order harmonic currents through the cable to the space radiation can interfere with nearby electrical equipment.
The output inverter: DC flowing through the filter capacitor filter and high-power IGBT inverter transistor switching elements for the exchange of variable frequency voltage. In the inverter output circuit, the output current is modulated by the PWM carrier signal pulse shape, high-power inverter for the GTR components, and its PWM carrier frequency of 2 ~ 3kHz, while the IGBT inverter high-power components, the maximum PWM carrier frequency can be up to 15kHz. Similarly, the output loop current of sine wave can be decomposed into only with the fundamental and other harmonics, the main harmonic frequency for the first time (fundamental, 50Hz), the fifth harmonic (250Hz) the seventh harmonic wave (350Hz), the 11th harmonic (550Hz), the 13th harmonic (650Hz). We are working mechanism from the inverter can be seenInverterMost of the harmonics and interference are generated in the inverter, the high-order harmonic current of load there is a direct interference (when the role of the motor when the motor manifestations were fever, sound ugly. When the role of analog devices when the , meter pointer and readings bounce, these phenomena are subject to interference phenomena), the other high-order harmonic currents through the cable to the space radiation can interfere with nearby electrical equipment.
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