Photovoltaic inverter is very important to the effect of photovoltaic power generation. It not only has the function of DC conversion, but also has the function of maximizing the function of solar cells and the function of system fault protection. In summary, there are automatic operation and shutdown functions, maximum power tracking control functions, anti-independent operation functions (for grid-connected systems), automatic voltage adjustment functions (for grid-connected systems), DC detection functions (for grid-connected systems), and DC grounding detection. Function (for grid-connected system), etc.
Domestic inverter manufacturers still use too little new technology and new devices. Inverters using silicon carbide as power devices are beginning to be used in large quantities. The internal resistance of silicon carbide is very small, and the power can be made very high. The frequency can reach 10K, and the LC filter and bus capacitance can also be saved. Silicon carbide materials may have breakthroughs in the application of photovoltaic inverters.
