November 5 , easy special self-developed 500KW PV inverter successfully passed the State Grid Electric Power Research Institute experimental validation center of the world's most stringent zero voltage crossing tests. The testing and certification that easy special power 500KW PV inverter is fully in line with national grid " photovoltaic power plants connected to the grid test procedures" and the latest national standard " photovoltaic power plants connected to the grid technology provides that" zero voltage across the photovoltaic plant functional requirements . Marking the company's PV inverter technology standards to achieve world-class level , the future PV market for the company 's rapid development has laid a solid foundation.

   The test carried out strictly according to the latest national standards , not only requires PV inverters with zero voltage crossing function, but also require it to have a grid voltage drop during dynamic reactive power support capabilities. It is also easy special 500KW PV inverter Following the success of last year through the low voltage through the test , the company continued research team to overcome technical difficulties , and in the short time successfully completed the world's most stringent zero voltage across the test , a breakthrough photovoltaic field Also a technical threshold .

    According to reports, the zero voltage crossing is the core technology of photovoltaic equipment , and network security is to determine whether the key indicator , is due to grid PV power plants in order to prevent malfunction causes a voltage drop caused by the collapse of the entire power grid , causing widespread power outages and set new national standards . And low voltage ride through (LVRT) technology, more demanding, more stringent testing .

A short circuit due to a fault in the power grid , the voltage drops , the PV grid-connected inverter must remain off-grid , and follow the instructions to the grid dispatching certain reactive power injected to help restore power to provide dynamic voltage support, protection grid stability normal operation. The introduction of standards for many photovoltaic inverter manufacturer is a severe test of the technology , currently only a few companies easy Principal passed this test certification.

    Successfully passed the test and is easy special over the years in the field of new energy applications continue to promote technological innovation, continuous improvement photovoltaic inverter performance and reliability of the indicators achieved a major breakthrough , marking its photovoltaic inverter technical indicators have reached the international first-class level , solar photovoltaic systems for the company 's research and development of products set a new milestone.

Currently, the easy special photovoltaic grid-connected inverter has worked in Xinjiang, Gansu , Jiangsu, Qinghai, Ningxia , Guangdong and Germany, France, India and other domestic and foreign large-scale solar photovoltaic power plant construction , Golden Sun PV demonstration project has been widely applications, and achieved good social and economic benefits.

Recently the state has introduced to support distributed generation policies and measures to encourage units , communities and families to install, use photovoltaic systems, photovoltaic power station construction orderly . From a global perspective, countries with good development of photovoltaic systems , such as Germany , Italy, USA , Australia and other countries, distributed PV PV development has been the main form , accounting for more than 80%.

Solid Dulwich PV inverters have been used in tens of thousands of distributed generation systems worldwide , has accumulated a wealth of experience. Based on in-depth analysis of the global distributed generation and forward looking projections , I think distributed generation system has five pillars:

The conversion efficiency , such as photovoltaic systems, converting sunlight into direct current through the solar panels ( panel conversion efficiency is 15 % -18 % ) , and then through the sine wave inverterdirect current into alternating current and connected to the grid ( inverter conversion efficiency , typically 96% -98.8 % ) ;

Inverter MPPT tracking efficiency. Conversion efficiency reflects a certain point , the system output power capability. MPPT tracking efficiency is reflected any point in time , the inverter system can track the maximum power point , to achieve maximum power output of the system 's capabilities.

Efficiency ( ie, conversion efficiency and the efficiency of MPPT tracking the organic combination of both ) is a distributed generation system to consider the primary factors that determine the ROI of the system , is the focus of the industry . Distributed power generation system has therefore become the first pillar . Solid Dulwich in this index reached world- class level. Latest ( December 2012 ) of the PHOTON test report shows solid Dulwich GW4KW-SS in the same power  wind grid tie inverter ranked first in the world , the whole world's top three series , the first Asia-Pacific region , the absolute leader in the domestic industry .

Renewable energy generally have intermittent characteristics, power instability, poor power quality , so wind power , photovoltaic power generation and even become "junk electricity" , or even abandoned or refused access. Measure power quality is an important indicator THDi, the total current harmonic distortion , distortion more powerful , power quality is worse. Accordance with international norms and requirements , THDi not exceed 5 %, otherwise the grid can be refused access. The industry standard is generally 2 % -3%. Dulwich solid indicators in this international leading level , the whole series is less than 1%. As follows :

In accordance with the dynamic view , if the current harmonic distortion power plant 2% -3 %, 5 years later may decay to 3% -4% , after 10 years may exceed 5% , so there may be banned plant connected to the grid ( and as a distributed system generating capacity in the power grid to increase the proportion , the grid is likely to improve THDi standard ) . So , THDi is distributed generation systems need to focus on the second pillar .

According to market research firm IMS Research IHSiSuppli its latest report revealed that with the PV inverter supply market in 2012 to further differentiate this year, a quarter of the global top ten inverter supplier market share fell more than 4% of the total .

IMS Research believes that part of the reason is that China and Japan, strong growth in market demand , and the world's top ten suppliers of inverter most companies business in both markets is relatively limited . With the PV market differentiation and core markets continued weakness in demand for products , SMA company in the global market accounted for the third consecutive year revenue decline, its market share is now only slightly higher than 25%. The recent burst of mergers and acquisitions wave , including AdvancedEnergy acquisition REFUsol, ABB Group acquired Power-One , including almost no impact on the competitive landscape , and the impact of supplier ranking is minimal .

PV inverter supply market differentiation although in general , there is more from the bankruptcy exit and merger cases implies industry is undergoing consolidation, but the world's ten largest PV inverter supplier 's market share only from 62% in 2011 fell to 56% in 2012 , the change is small.

2009 with nearly 40 % market share compared to 2012 SMA inverters DC TO AC in photovoltaic market leadership further decline in market share only slightly higher than 25%. IHS PV inverters research manager Sam Wilkinson said: " During the year 2012 , because business is still concentrated in the tradition of weak growth in the European market , and in the rapid growth of China and Japan, lack of market development , including SMA, Power-One and Kaco three regicide transformer suppliers , including many leading suppliers have lost some market share .

In contrast, in 2012 won a place in the market are the main suppliers of the vast majority of medium-sized enterprises in emerging markets . 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 majority of market share and ranking rose suppliers are those in the fast-growing emerging markets in-depth plowing or launch the latest technology enterprises.

2012 , AdvancedEnergy with Enphase two companies in the fast- growing U.S. market in a strong position to promote 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 sales charts it won the sixth position , and became into the world's top ten list of the inverter supplier first Asian suppliers .

In contrast, three inverters supplier fell out of the 2012 global top ten ranks. Following financial difficulties after , Satcon declared bankrupt ; Siemens exit the PV industry , and will be attributed to the decline in growth and increased pricing pressures ; Sputnik Engineering is rare except in the stagnant European market for new markets .

Recently, SMA PV inverters giant lowered 2013 earnings data sparked widespread concern in the industry - 2013 annual sales of 900 million euros from -13 one hundred million euros down to 900 million euros -10 million euros, 80 million loss this year is expected to to 90 million euros .

SMASolar CEO Pierre-PascalUrbon to poor performance due to cost pressures and declining demand in Europe . He said , "As the world market leader , SMA particularly affected by changes in the global PV market impact , the market is characterized by high global price pressures . Moreover, the European demand for our core markets have fallen sharply, while the new Asian and U.S. markets is not able to make up . "

The past two years by the European debt crisis led to shrinking demand in Europe cut solar subsidies , overcapacity and other multiple factors , the global PV market landscape has been significantly change . European Photovoltaic Industry Association EPIA mid-year release of " 2013-2017 Global PV market outlook ," the report said, 2012 years ago, the European market, accounting for the global installed capacity of PV systems add more than 70% , in 2012 this proportion to 55%. This year, the vast majority of the world's new PV systems are installed in markets outside Europe .

On specific figures, in 2011 the European photovoltaic installed capacity reached 22.4GW, 2012 . Grid installed capacity reached 17.2GW. 2013 , Europe is expected to decline photovoltaic installed capacity will exceed 6GW. " Europe is the result of falling demand sales frustrated SMA main reason ." Inverter has been concerned about the development of the industry and is engaged in the industry for nearly 10 years, veteran Zhan- wide , said in an interview with reporters .

"This year, the focus has been China solar market , the USA, Japan , Australia and other countries transfer . Industry chain manufacturers should follow the pace of the market , to the transfer of these regions in the new market environment to make adjustments and respond . "In fact, this year, in March , SMA to 160 million yuan to buy MeV energy 72.5% stake in the new , just want a prosperous future in the Chinese market . However, the domestic grid tie inverter market competition , coupled with the trend of sharp decline in prices , so that Big Brother SMA somewhat acclimatized.

However, the SMA Zhan- wide post more optimistic that next year will force SMA . He said , "Emerging markets will continue to grow in the coming years , the market is still many opportunities . SMA acquired after MeV love Faso internal integration and standardization takes time. Once SMA prepare future there will be a good performance ."

SMA to next year 's market is full of expectations. The company said in a statement for the performance down , " new products on the Japanese market in 2014 will help them to increase their market penetration in Japan , while the recombinant MVA new energy will increase next year 's sales in China . These developments , enable the company to return to profitability in 2014 and sales growth . "

Solar inverter industry leader SMA Sloar has maintained a product innovation, and now developed a new type of central inverter , however, increasingly fierce competition within the industry . Solar experts Hummel has specified one of the most powerful competitors.

    The industry's largest solar inverter manufacturer SMA has been expanding its product line. The United States and Canada in recent PV projects , the use of a model for the Sunny Central CP-US new inverter. Such inverters higher cost , especially for more than 1 MW of large power station roof and floor large power stations .

    However, such innovation does not prevent the market being further eroded . More and more competitors enter the inverter market . These can not deny the PV inverter industry is still the most profitable industry chain link this fact. Solar expert Wolfgang Hummel has learned a number of competitors in a solid Dulwich called GoodWe PV inverter manufacturer , he said: "is located in Suzhou, near Shanghai GoodWe, will improve the logistics system beyond the SMA.

They partner with renowned international logistics DSV cooperation . DSV through the improvement of air and sea transport to ensure that their products supply chain , European customers through this virtuous logistics cooperation, in just five days to get ourselves on grid inverter . Recently Goodwe again in Germany's Ruhr region Wuppertal city set up its own segment , SMA has the home advantage against the original German market has formed a huge impact. Goodwe which can radiate to other European markets, such as Belgium, Luxembourg and France . "