A photovoltaic inverter is an inverter that converts the variable DC voltage generated by photovoltaic solar panels into AC power at the mains frequency. As one of the main components of the photovoltaic power generation system, the photovoltaic inverter undertakes important functions such as AC/DC conversion, power control, and off grid switching of the entire system, and is the key to ensuring the long-term reliable operation of the photovoltaic power station.