March 3, Northwest Oilfield Branch Tahe Oilfield first solar photovoltaic power plant settled in the AT22 the well. AT22 well is a remote single well of Tahe Oilfield, summer average daily consumption of 200 kwh, winter average daily consumption of 350 kwh. As well far from the grid, and erected a 10-kilovolt power line costs higher powered gas generator sets.

New AT22 single well solar photovoltaic power plant array consists of nine polycrystalline silicon photovoltaic panels, storage battery pack and PV inverter components, after the completion of the generating capacity of 40 kilowatts, the annual generating capacity of up to 68,000 kwh. It is understood that the solar photovoltaic power plants with high economic returns, can be repeated use and environmental protection. Solar photovoltaic solar panel power plant put into operation in the Tahe Oilfield, both alternative to the high cost of power line construction, and provide new sources of energy but also in remote areas of the Tahe Oilfield single well.

Kyocera Corporation (hereinafter referred to as "Kyocera") has completed installation of Shiga, Japan's largest solar photovoltaic inverter charger power generation system, the completion ceremony was held last month. The project consists of Kyocera's sales subsidiary in Japan - Corporation Kyocera Solar installed 499.95kW solar photovoltaic power generation system implemented in the Wacoal circulation Corporation (hereinafter referred to as "Wacoal circulation") the West Japan circulation center roof . Kyocera has been committed to the research and development of solar photovoltaic power generation system.

It is reported that the system uses a high output power of solar modules, and the use of pollution prevention component of the Kyocera patent allows dust discharged together with the rain, to avoid the decline in power generation components dirty glass surface. Annual generating capacity of the system to meet the circulation center throughout the year, with about one third of the electricity, the equivalent of the annual consumption of 110 families in general.

Kyocera pioneered the cause of solar photovoltaic power generation has been more than 30 years, manufacturing a wide range of products to meet the different needs of professional engineering technology developed for solving a variety of special circumstances, and has been trying to open up the market, has made tremendous popularity of solar photovoltaic systems contribution.

 Solar PV inverter manufacturer Satcon Technology (NASDAQ: SATC) has said that the first quarter of 2012, new orders ring than a 130% increase in orders worth about $ 45 million. The company claims this is the best first quarter of the order situation in the past four quarters, the book to bill ratio reached 1.9:1.

satcon while sales expectations for the first quarter was $ 22 million to $ 25 million from $ 22 million to $ 28 million adjustment. "Satcon this quarter to continue the implementation of the strategy to help companies both improve in both revenue and market share." Satcon's CEO Stephen Rhodes (Steve Rhoades).

"Second five" first year, PV development has a special meaning in the history of the year, but also the year of the change in the situation of the photovoltaic industry, the competitive landscape. In recent years, the domestic and international energy giants have competing solar photovoltaic power generation, new energy investment is one important direction. The 2011 PV winter warming With the rapid opening of the domestic PV inverter charger market, the core of the device as a solar PV system inverter market demand.

PV inverter, also known as the power regulator, the power adjustment means is composed of a semiconductor device, mainly for converting the DC power into AC power. PV inverter can be divided into high-power inverters and small and medium-sized power inverter. Still general consulting electronic industry analysts believe that the PV inverter as the impact of the PV system long-term stable operation of the core components of PV companies want a foothold in the highly competitive international market, we must strictly control the development cycle to protect product quality. Currently, some domestic photovoltaic inverter enterprises to reduce R & D links to purchase the drawings produce products quickly enter the market, while the lack of research and development aspects of the manufacturing enterprise is bound to face a double test of the technology and product quality.

Europe is the first rise of the global photovoltaic PV inverter technology is a world leader. China's solar the terminal market starts late, the smaller domestic PV inverter manufacturers. At present, the domestic manufacturers to enter the field more small and medium power inverter, technical level and foreign manufacturers at the same level, and building fast due to the production of domestic enterprises, relatively low labor costs, small and medium power inverter competitive advantage, but the threshold for high-power inverter technology is much higher than the small power inverter, there is a big gap between the high-power domestic PV inverter technology, performance and stability with foreign products.

Still general consulting released "2011-2016 China inverter market analysis report shows that, in order to maintain growth, companies must focus on certain areas makes the inverter. Because the solar adjustment of national policy, the growth of the European market will slow down, and the new markets of the Americas, Asia and Central and Eastern Europe will provide more opportunities for the expansion of the market in recent

 Denmark's largest industrial group Danfoss COO Xingjian recently said in an interview, the company will consider entering China PV inverter market.

Fang Hangjian said, because last year the international PV market downturn, the emergence of a 30% decline in the PV inverter business in Germany, but overall, the photovoltaic solar charge controller operating in the world also tend to rise. "This is mainly due to some application areas falling, but we believe the business soon to recover, Germany is the typical case, not as a key factor in the overall consideration." Party line called.

But for the Chinese market, "said party Xingjian, if taking into account the Chinese PV market, we now share may be close to zero, but the Danfoss has focused on, and do some preparation, to how to enter this market, occupy a certain market share."

But he also said, "China PV market access to markets in other countries to enter the construction may be slightly different, China may mainly concentrated in some large-scale power plant facilities, but also to the photovoltaic products demand is diverse, so we are considering this problem, enter may have some difficulty."

According to the National Energy Bureau, China State Grid Corp of PV  mppt solar charge controller grid-connected power generation, low voltage ride-through technology is considered to be the biggest challenge of grid-connected photovoltaic power generation technology, domestic and foreign PV inverter project bidding are the LVRT ability as an important threshold to enter the photovoltaic field.

Recently, Mingyang Longyuan MY solar photovoltaic grid-connected inverter in China Electric Power Research Institute National Energy (experimental) center smoothly through the low voltage ride through (LVRT) the function test, the test report shows that Mingyang Longyuan MYsolar photovoltaic grid-connected inverter http://www.sungoldpower.co.uk fully conforms to the country network "photovoltaic power station access network technology" on the PV system low voltage ride through function of the strict requirements.

The Spanish energy company Yinghete ANN (Ingeteam) will exhibit its new photovoltaic inverter products during 16-18 May in Shanghai SNEC International Photovoltaic Exhibition, Ingecon ® SunPowerMax series model is central photovoltaic inverter, power range from 250kW to 840kW (specifically for the installation of design of MW), Ingecon ® SunLite series single-phase photovoltaic inverter, power range from 2.5kW to 6kW, and the Ingecon ® SunStringControl current monitoring equipment.

As a key innovation, Yinghete Ann will showcase its new series of outdoor central photovoltaic inverter. The inverter uses a new ventilation system, the implementation of the rated power can also bear nearly 50 º C at high temperature.

 Hengdian Group DMEGC Company Limited will be installed in the company roof the 20.709 MW user side roof photovoltaic power generation system. East magnetic Company "20.709 MW user side rooftop photovoltaic power generation demonstration projects" using the same company produce 190 watt monocrystalline components and 240 watt polycrystalline silicon components.

Understanding of the project will utilize the company photovoltaic park DMEGC Hutou land Industrial Zone, East Zone C plant 216,000 square meters of the roof, install 20.709 megawatts of solar modules At present, the largest single use of its own plant roof engineering, is the provincial key projects. The total project investment of about 248.5 million yuan, can enjoy state financial subsidies to 113.8 million yuan. Project operation period of 25 years after completion, with an average annual generation of 19,187,100 kwh.

Compared with thermal power, the annual savings of about 6407.79 tons of standard coal and reduce carbon dioxide emissions 15,378.69 tons, reduce sulfur dioxide emissions by 128.16 tons, 256.33 tons of nitrogen oxides, 64.06 tons of soot, has significant social and environmental benefits. The project is expected to complete the preparatory work before the end of June 2012, the civil construction began in July, the end of November to complete the installation into debugging, completed and put into operation in December.

The paper analyzes the PV inverter technology development route, focus and direction of the future development of grid tie inverter technology, given the technical characteristics of the micro-grid inverter and typical application cases, and finally a brief introduction to Beijing Quinlan new energy technology research and development.

Before the rise of the photovoltaic industry, inverter or inverter technology is applied to such as rail transport, power and other industries. When the rise of the PV industry, photovoltaic inverter becomes the core equipment in the new energy power generation system, followed by the familiar. Developed countries, especially in Europe and the United States enjoys popular support because of the concept of energy saving and environmental protection, carried out earlier by the photovoltaic market, especially household photovoltaic systems, rapid development, home inverter has been as household electrical appliances in use in many countries, the penetration rate is higher .

PV inverter to convert the direct current generated by the PV modules into AC feed into the grid determines the generation of power quality and power generation efficiency, performance and reliability of the inverter, the PV inverter in a photovoltaic power generation system core position.

Which occupy the major market share in all categories in grid-connected grid tie power inverter, to all inverter technology development a start. Relative to other types of inverters, grid-connected inverter technically relatively simple focus on the PV input and grid output capable of safe, reliable, efficient, high-quality output power to become the type of inverter focus measure technical indicators. Formulated in different countries, a photovoltaic inverter grid technical conditions, these points become the standard common measure point, of course, the details of the parameters differ.

All technical requirements for grid-connected inverter, are around to meet the power requirements of distributed power generation systems expand, the more demands from the grid inverter, namely the top-down requirements requirements such as voltage and frequency specifications, power quality, security, fault when in control requirements. And how grid requirements incorporated into what the voltage level of the power grid, and so on, grid type inverter is always to meet the requirements of the grid, it does not come from within the power generation system requirements.

 Japanese Economy, Trade and Industry Provincial Office of Natural Resources and Energy announced on March 13, 2013 Japan put into operation in April 2012 to the end of December, according to the July 2012 acquisition of the fixed price system identified renewable energy. 

This period of operational renewable energy equipment capacity totaled 1.178 million kW (1.178GW), basically the same as last year, but during which access to certified equipment capacity a total of 5.236 million kW (5.236GW), significantly more than the capacity of functioning equipment . 

Resources and Energy explained, also need some time to get identified to operationalize the "some tens of thousands of kilowatts of large-scale systems to be 2 to 3 years to start". Even so, from the point of view of promoting the use of renewable energy, the fixed price of the acquisition system has played a significant role. 

grid tie inverter power generation accounted for 95% of Japan in April 2012 to the end of December to operationalize renewable energy equipment solar power generation system. Natural Resources and Energy installed solar power systems throughout Japan in April 2012 to the end of December 1,119,000 kW (1.119GW), renewable energy other than solar power system for 59,000 kW solar power system is approximately 1/20 . 

Solar power system operational during this period, the residential use of 911,000 kW and non-residential uses 208,000 kW residential use still accounts for more than half. However, it can be seen from the identified equipment capacity, this situation is changing. 

Identified over six months before the cumulative installed capacity from July 2012 to the end of December, renewable energy identified a total of 5.236 million kW, of which 4,704,000 kW solar power system (4.704GW) in before the end of March 2012 Japan's PV inverter power system is the cumulative installed capacity of approximately 4.8 million kW (4.8GW), only the identification of six months has basically reached the sum of the past 20 years, the total installed capacity. 

, The identified solar electric system in the residential use of 847,000 kW and non-residential uses to 3,857,000 kW. Earlier, Japan's non-residential uses solar power system is very small, the equipment capacity identified in 2012 alone the cumulative installed capacity of close to residential use. 

In addition, since April 2013, the above 10kW power purchase price from 42 yen / kWh down to 37.8 yen / kWh. Therefore, part of the solar power system stakeholders speculated that March 2013 will have a much larger number of devices made identified. The year 2012 finds that the amount of solar power generation in Japan may hit a historic record.