The PI500-S series photovoltaic water pump dedicated frequency converter of PuChuan Technology adopts high-precision and fast MPPT algorithm, which tracks the output of the photovoltaic array through power points and drives the water pump motor to meet various water lifting application requirements. The dedicated inverter for photovoltaic water pumps not only supports DC input for photovoltaic arrays, but also AC input. When the photovoltaic array output cannot drive the motor or has no output, it also receives AC input from the power grid or other AC motors for power supply to meet various emergency needs. The photovoltaic water pump dedicated frequency converter provides comprehensive protection, improving the service life of the motor and water pump.