China's PV inverter market continues to develop rapidly

In the rocky desertification hilly lands in Shilin Township, Shilin County, more than 100,000 solar panels are standing neatly and orderly. Although the sky is floating with sporadic rain, they still generate electricity silently. Recently, the first-phase 20 MW commissioning ceremony of Kunming Shilin Solar Photovoltaic Grid-connected Experimental Demonstration Power Station, which has the largest installed capacity in Asia, was held in Shilin, marking a new phase in Yunnan's use of renewable energy. The project also provides a large-scale experimental demonstration platform for enhancing the development and utilization of solar photovoltaic power generation in Yunnan and promoting the development of the solar energy industry. The Shilin Photovoltaic Grid-connected Experimental Demonstration Power Station will be completed in 2015. The power generation will reach 195 million kWh (according to a household's monthly electricity consumption of 100 degrees, which can satisfy 162,500 households), which is equivalent to annual emission reduction. Carbon dioxide 175,000 tons.

The National Development and Reform Commission will soon issue the "New Energy Industry Revitalization Plan." According to the original plan, the total installed capacity of wind power, solar photovoltaic and nuclear power in China will reach 150 million kilowatts, 20 million kilowatts and 80 million kilowatts by 2020 respectively. The rapid development of China's new energy industry has also driven the rapid development of the industry-related product market. Photovoltaic inverters are an important part of this.

Photovoltaic inverter is the most critical electronic component in the solar grid-connected power generation system. Its main function is to convert the collected variable DC voltage input into a non-interfering AC sine wave output, which can be used by the equipment as well as feedback. Grid. Improvements in inverter performance are critical to improving the efficiency and reliability of the system, increasing the life of the system, and reducing costs.

Photovoltaic inverter known manufacturers basically concentrated in the solar market earlier in Europe, America and Japan, such as the United States Power-one, Emerson, Canada's Xantrex, Germany's SMA, KACO, Italy's Frouis, Japan's Sanyo and Mitsubishi. In addition, China's domestic solar inverter manufacturers have also experienced rapid growth in recent years. At present, the global leading company SMA's market share is between 39% and 45%. The second tier of four manufacturers collectively occupies 32% of the market, and the rest exceeds. More than 150 companies split the rest of the market.

However, due to the late start-up of the market, the domestic market has not yet formed the solar power market scale. Therefore, there is a certain level of gap between domestic domestic suppliers and foreign first-class manufacturers. In China, research on grid-connected inverters mainly focuses on two-stage energy conversion structures based on maximum power tracking and phase separation of inverters. At the same time, inverters that can be introduced to the market are rare. In other words, in China, photovoltaics The grid-connected system is not truly commercialized, so the current grid-connected systems are demonstration projects. In addition, the grid-connected inverters used in China are mainly based on import and cooperation research. This situation is also in urgent need of domestic companies to change. However, from the perspective of long-term development, local suppliers still have great market opportunities and opportunities. Currently in the Chinese market, Hefei Sunshine Power Co., Ltd. occupies a dominant position with a market share of more than 60%.