Longyuan Electric new photovoltaic inverter for low voltage ride through certification

Recently, Longyuan Electric developed GDLYEC-PV-3 ~ 270/500 and grid PV inverter, passed the China Electric Power Research Institute National Energy solar power research and development (experimental) low voltage ride through the center of a fully functional testing and certification. Longyuan Electric new photovoltaic inverter for low voltage ride through certification

The test results show that the PV inverterline with the national grid company "photovoltaic power plants connected to the grid technical requirements" for photovoltaic power plants across the functional requirements of low voltage. Based on the good performance of the PV power plant in Inner Mongolia Azuoqi field operation, the product has been fully equipped demonstration applications and mass marketing conditions and capabilities.

The PV grid-connected inverter is designed for photovoltaic power plant system design, with high efficiency, high reliability, high complex environmental adaptability, the highest conversion efficiency up to 98.7% more than the European standards conversion, to lead the domestic like product level. The product can effectively improve generation capacity and ensuring the reliability with low voltage ride through capabilities, perfect protection and a variety of communication interfaces, suitable for all types of large-scale photovoltaic power plants.

2010 new domestic PV installed capacity of about 500MW, is 3.5 times the installed capacity of 140MW in 2009. In 2011 the country is expected to add a capacity of close to 1GW, 2012 is expected to reach 1.5GW. Currently the price of PV inverters 1.1-1.2 yuan per watt computing, future reached 1.7 billion yuan and 1.1 billion yuan of two-year domestic scale PV inverter with charger market.

When the market share in China, and how to plan the next step of asking SolarMax Currently, Christophvon Bergen said: "In a global scale, SolarMax PV industry in the former top ten positions in the Chinese market, our goal is. excellent business cooperation and common development of quality projects and we do not want to compete on price with domestic manufacturers, but the emphasis on quality.

In addition to small-scale BIPV (building integrated photovoltaic) projects, our products are also suitable for large buildings, such as the string inverters SolarMax, a large central inverter, 1.32MW of power stations, etc. can be used for different the scale of the project. Our goal is to establish a high-quality image of Switzerland in the Chinese market. "

Ohm Nick: School of Scottish PV development Lutron Chinese-style green transformation Avenue

According to statistics the UK Department of Energy and Climate Change recently released , the amount of renewable energy in Scotland has reached historic highs. Data show that in 2012 the total Scottish renewable electricity consumption reached a record 40.3% , Scotland in 2015 is expected to achieve 50% of its electricity from renewable energy sources in the medium-term objectives , the demand for electricity by 2020, capable of 100% of Scotland electricity from renewable energy and other types meet .

Over four percent of electricity from renewable energy sources, mainly from the Scottish support for renewable electricity , coupled with initiatives to improve energy efficiency , to reduce long- term energy prices , thus contributing to the protection of consumers in Scotland . At the time of the Scottish Government 's "Renewable Energy Roadmap " ( revised edition ) to comment, experts said recently released report clearly shows the progress made ​​in the coming year as well as further measures to help Scotland achieve its 2020 targets this is an ambitious but achievable target . Scotland has gone on the 2015 mid-term goal of leading the way .

PV inverter experts ohm Nick said , compared with the industry growth rate in England , now is not yet able to reach , but with the extent of the increased emphasis on energy and the environment , China's domestic policy is also good news after another . The first is valid for " Interim Measures for photovoltaic power generation operations supervision ," a three-year officially announced by the National Energy Board . Later, the Zhejiang Provincial Government promulgated the " Opinions on further accelerate the implementation of photovoltaic applications promote healthy development of industry " ( Zhe Zheng Fa [ 2013 ] No. 49 ) , define the amount of photovoltaic power generation projects on the basis of national regulations , subsidies and then 0.1 yuan / kilowatts , the domestic photovoltaic industry inspired.

As a member of the photovoltaic industry , has focused on 50 kilowatts or less R & D and manufacturing of household photovoltaic inverter market Ministry spokesman Nick expert ohm -to-use machine that if domestic policy can be further improved, especially in the renewable energy and others have conventional energy at the same price level ; and to provide the basic platform for more renewable energy development , infrastructure, so that the entire energy system easier , more freedom , more reluctant to accept renewable energy, in order to ultimately achieve China's 2020 renewable Energy Development goals.

Today, domestic users and foreign users can also , as in the establishment of a distributed power plants, not only to meet the daily electricity needs , but also to gain new energy price subsidies , and more through the network , the excess electricity sold to the grid , is gain considerable green investments. Since its inception, the international market as a leading photovoltaic off grid inverter Nick ohm team of experts will adjust national strategic plan to provide users with a superior one-stop family PV solutions .

ABB India to accelerate the production of 200 MW Paul photovoltaic inverter orders

ABB India's growing photovoltaic grid inverters manufactured to meet more than 200 MW of utility-scale domestic orders power plant needs. According to the company, which in a new production line in Bangalore, India to begin production in late 2012 PVS800 central inverter product line, its annual nameplate capacity of 500MW.

ABB's global renewable energy power converters Antti Suontausta group product manager, said: "With this new production facility, we can support our customers in India and more rapid delivery times, provide for the needs of different projects faster, more Convenient support timely implementation and delivery to customers is very important, especially in the booming market. "

The company said: Since the end of 2011, there have been more than 100MW of central inverters for photovoltaic power generation projects in the country. Second half of the PV inverter salesrevenue 90.41 million, gross margin of 31.87%, this part of the major sales in 2012, and revenue is recognized. From this point of view, the gross profit margin of PV inverters UPS is close to the gross profit margin, refer to the gross profit margin of 33% on-line UPS.

Analysts had been the view that as the PV inverter power electronic products, raw materials, production processes and UPS, voltage inverter with charger are very similar, so it can refer to both gross margins have experienced price competition, currently very stable Product gross margin situation. Analysts believe that the current gross margin of PV inverter has been close to a price war to an end.

PV inverter buyers value most energy storage

According to IHS research report on photovoltaic inverter buyers all over the world, energy is the most rapidly growing storage requirements. Although this technique is relatively less mature, IMS Research, a survey showed that 400 global PV inverter customers, nearly one-third of respondents expect the solar energy system installed in 2015 years storage usage can reach more than 40%.

Respondents from Germany, Italy and the UK stressed that compared with the other requirements in the future more attention photovoltaic inverter energy storage. When asked about the main driving force of energy storage when used in what will be the most common response is to help customers reduce the price of the drive system, so that the storage economically viable, lower battery prices.

More than 60 percent of respondents said "acceptable" price increase system includes energy storage technologies between 10-29%, although nearly one-third of respondents said they would be willing to pay a higher premium . IHS Energy electricity and Sam Wilkinson, research manager, said: "Energy storage will become an increasingly important future PV system function, if the vendor is able to offer products in line with industry expectations in the next two years, photovoltaic energy storage market may be significantly to expand. "

The survey also asked customers using microinverters, the results show relatively high cost of the technology has become more popular obstacles. But the survey also showed that, compared with 2011, in 2012 the use of micro-inverter proportion of customers increased by 10 percentage points. Respondents noted that they have the ability to control shadow effects, and a high degree of design flexibility, is the most common reason to use them.

Wilkinson said: "Because of its advantages and characteristics, micro inverters for more people begin to accept, but the price is still a major drawback, most currently do not buy micro-inverter respondents said, should consider using this Micro-inverter, prices are lower than 50%. "

PV inverter supply market differentiation

Although in general, there is more from bankruptcy exit and merger cases means that industry is after consolidation, but the world's top ten suppliers of PV inverters market share of just 62 per cent in 2011 to 56% in 2012 , small changes.

2009 with nearly 40% market share compared to 2012 SMA's leading position in the PV inverter market to further decline, the market share of just over 25%. Sam Wilkinson IHS PV Inverter research manager, said: "During the year 2012, due to the sluggish growth of the business remains focused on the traditional European markets, and lack of rapid growth in China and Japan, market development, including SMA, Power-One and Kaco three regicide change vendors, including many of the top suppliers have lost some market share. contrast, in 2012 won the majority of the market place are the main suppliers of medium-sized enterprises in emerging markets in 2012, the market share of more than 1% of the number of suppliers increased to 24, this new group contributed three-quarters of total revenue. "

The vast majority of market share and ranking rose suppliers are those in fast-growing emerging markets in-depth work or launch new technology companies. 2012, AdvancedEnergy companies with Enphase strong position in the fast-growing U.S. market has contributed to increased its global ranking to fourth and sixth, and in 2011 the two companies were ranked eighth and eleventh names. Similarly, Omron advantage in the Japanese market, it won the sixth position of the sales charts, and became the inverter into the world's top ten list of the first supplier Asian suppliers.

In contrast, the three inverters http://www.gridtiepowerinverteronline.com/  supplier fell out of the ranks of the top ten global 2012. Following the financially troubled, Satcon declared bankrupt; Siemens exit the PV industry, and it attributed the decline in growth and increasing price pressures; Sputnik Engineering is rare outside the stagnant European market to open up new markets.

Shandong BOS launched the "storage bi photovoltaic inverter"

Shandong BOS "storage bi photovoltaic inverter" new conference was held at the BOS Industrial Park, BOS BOS 250KW officially released and BOS 100KW two "storage bi photovoltaic inverter" new product, from the Connaught photovoltaic, Sacred Sun Power, Shandong Yun Feng New Energy, the super intelligent, Alexander electricity, Shandong University and other customers and industry experts come to participate.

The release of BOS 250KW and BOS 100KW two "storage bi photovoltaic inverter  to achieve both off-grid and grid capabilities, but also realize the power of two-way flow control with automatic and manual switching state's ability to work. This product from the security, reliability, stability or output efficiency is a world leading level, compact structure, easy to use, ease of installation, low maintenance cost, can provide a better user experience and economy.

Been fully affirmed by experts in the field, and the series will provide overseas customers a better choice, more extensive applications. Corporate customers Marino Solar Power Engineering Co., Ltd., said, BOS's "storage bi photovoltaic inverter" product "stable operation, high power output and low noise, after-sales service is also very timely in place."

The series of new product launches, will consolidate the dominant position in the industry BOS enhance its technological innovation and core competitiveness, providing a steady stream of power for the BOS to achieve sustainable development.

Recently, China Dongfang Electric Group Co., Ltd., Hitachi-owned enterprises Oriental DHSP3GC-500KTL independent research and development of photovoltaic inverter successfully tested by the zero voltage crossing national solar PV Product Quality Supervision and Inspection Center. The testing and certification indicates that the Oriental Hitachi power photovoltaic inverter in full compliance with the national grid [microblogging] "photovoltaic power plants connected to the grid test procedures" and the latest national standard "photovoltaic power plants connected to the grid technical requirements" (GB/T19964-2012) , Dongfang Hitachi again verified in the new energy applications continue to promote technological innovation, continuous improvement of photovoltaic grid-connected inverter performance and reliability targets are achieved.

Low voltage ride through (LVRT), zero voltage crossing is the core technology of photovoltaic equipment, is a key indicator and determine whether safety nets. But zero voltage across the low voltage ride through (LVRT) technology compared to the technical requirements are higher, more stringent test, currently only a few companies through this test certification. Zero voltage across the test, indicating that the East Hitachi 500KW PV inverter, grid failure due to a short circuit, the voltage drops to zero, may remain off-grid, and in accordance with the instructions to the power grid dispatching inject some active and reactive power power to help restore power to provide dynamic voltage support, uptime guarantee grid stability.

Micro PV Inverter certified technical specification approved

August 19, 2013, Beijing Certification Center's "micro-inverter technical requirements and test methods" expert group to review by the National Certification and Accreditation Administration Committee. Review Conference of the National Standardization Technical Committee on Energy and management of new energy and renewable energy sub-technical committee chaired by the national commission Technology and Standards Management Department, China Renewable Energy Society photovoltaic special committee, the State Quality Supervision, Inspection and solar photovoltaic products Center, China Three Gorges New Energy Company, China Merchants New Energy Holdings Limited, Rheinland testing and certification services (China) Co., Ltd, Baoding Tianwei Electric Automation Co., Ltd. and other units of the North more than 20 experts attended the meeting.

The expert group reviewed the view that CGC's "micro-inverter technical requirements and test methods" meet the requirements of the National Certification and Accreditation Administration of authentication technology management approach, provides the definition of microinverters, structure, mechanical properties, electrical technical performance and safety requirements and test methods, the content of scientific and reasonable, in line with the requirements of micro inverters.

The certification review team agreed by reviewing technical specifications, while giving a higher rating, that the certification specifications to fill the gaps, improve product quality micro-inverter, regulate the market for the development of China's photovoltaic industry provides a technical support.

Partially shaded solar cell modules, and for different angles of inclination orientation, dirt, different degrees of aging small cracks and different temperatures likely to cause such a photovoltaic panel system mismatch between the output efficiency defects decrease, leading to overall output power is significantly reduced. This is the focus of the inverter is difficult to solve the problem.

To solve this problem, in recent years, a "micro inverter" new structure, i.e. micro power inverter with each solar cell module through the module output power is optimized so that the overall output power is maximized, Even if some panels are affected shadows, dust cover, etc., the micro-on grid inverter power optimizer can still track the best local MPP (maximum power point), irretrievably lost a lot of electricity. Meanwhile, the micro-power optimizer input voltage / current is converted to a different output voltage / current to maximize energy transfer system.