In the research of related technologies ofphotovoltaic grid-connected inverters, with the support of various scientificand technological projects such as the Ministry of Science and Technology, anumber of core technologies have been studied, including: photovoltaicgrid-connected

inverter products, photovoltaic modules and parallel Technology,low voltage ride-through technology for photovoltaic systems, optimized designof photovoltaic systems, etc. The photovoltaic grid-connected productsdeveloped in cooperation with Sunshine Power have successfully participated inthe Beijing Olympic Bird's Nest, Shanghai World Expo and other large-scalegrid-connected power generation projects at home and abroad (Figure 1).

Figure 1 Cooperating with Sungrow Power todevelop photovoltaic grid-connected inverter series product application and photovoltaicpower station project.