PV inverter development context Introduction

The PV winter is not shrouded in every corner of the industry, the inverter battery components "devastated" when riding on the wind in the winter, a proudly open the "Samuume". PV inverter PV system power conditioning devices occupy the proportion of system costs between 10-15%, with high technical content. The inverter and the power plants go hand in hand relationship is destined to its development potential is unlimited. The tongue dancing, the inverter is becoming a hot topic of photovoltaic person. Global market, the inverter has a kind of developmental context?

Inverter technology development process of

1950s and 1960s, the birth of the transistor of the SCR for the development of the sine wave inverter to create favorable conditions the KACO company in 1953 to create a thyristor inverter.

1970s GTO (gate turn-off thyristor), the advent of inverter technology development and application.

Three, 1980’s, the power MOSFET, insulated gate bipolar transistors, the birth of the mos control thyristor (mct) and the electrostatic induction power devices for the inverter to the direction of large-capacity laid the foundation.

Fourth, in the 1990s, the microelectronics technology, such as vector control technology, multi-level transformation technique, repeat, fuzzy logic control has been well used in the field of the inverter.

Five, the beginning of the 21st century, the inverter technology with the progress of power electronics technology, microelectronic technology and modern control theory, the continuous improvement of the inverter technology is toward a higher frequency, higher power, smaller.

About PV inverter industry chain

Typically, transform AC power into DC can process known as rectification, completion of the rectification circuit called a rectifier circuit, the rectification process device called a rectifier units or rectifier. Correspondingly, the DC is able to transform into the AC power in the process known as the inverter, the complete circuit of the inverter function is called the inverter circuit, inverter process device called an inverter device or inverter.

PV inverter upstream of the power electronic components, microelectronic chips, integrated circuits, power capacitors, reactors, transformers, cabinets, chassis shell manufacturing and other industries. The industry associated with the upstream industry is less, the upstream industry is mainly reflected in the industry procurement costs. The inverter industry is closely related to the development of downstream industries, downstream industries have greater traction and drive the development of the industry, the National photovoltaic project construction and investment is an important part to determine the future needs of the industry, their needs change directly determines the present the future development of the industry.

PV inverter global market and technology status

Photovoltaic inverter global market, Germany SMA is the world’s largest PV inverter enterprises, although in recent years the company’s market share continued to shrink, but the market still accounts for 30% of the global market according to latest statistics SMA share. Power-One, the U.S. state of California followed, accounting for 12% of the share of the global inverter market. To enter the top ten, there KacoNewEnergy (Germany), RefusolGmbH (Germany), SiemensIndustryAutomation (Germany), SatconTechnologyCorp. (USA), FroniusInternational (Austria) IngeteamEnergy (Spain), ElettronicaSanterno (Italy), DanfossSolar (Denmark). In 2011, the 10 inverter enterprises accounted for 75% of global market share.

PV inverter product technology, abroad or in a leading position. However, this phenomenon will be with the Chinese products further mention has been shaken.

Global inverter market trends:

After more than two years of market volatility, the inverter in the PV market was devastated gradually catch herself, tends to a steady growth state. IHSiSuppli expected in the years 2013-2015, the global PV inverter shipments will continue to grow, and growth in 2015 to 52GW. Be affected due to the shrinking market of Germany and the Czech Republic in 2011, the inverter out the volume, but growth in other markets to support the overall market. Last year, the inverter shipments largest increase, significant increase from 691MW to 1.6GW. U.S. rate of increase ranked second, rising from 1.5GW to 2.8GW.

Germany, Italy, Britain, Australia and other countries have the domestic photovoltaic enterprises to cut solar subsidies, the United Kingdom by the economic crisis impact great of European countries and even began to cut installed capacity, but growth in Asia-Pacific region market demand for the make up of the old PV power market malaise of vacancies, China, United States, Japan and other emerging PV market quickly grown into the largest absolute growth of the inverter provides the opportunity to look to the future, the PV inverter growth momentum is still strong.