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.

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.

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.

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).
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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.

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?

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.