POWER CONVERTER, POWER CONVERSION SYSTEM AND POWER CONVERSION METHOD

The present disclosure provides a power converter, a power conversion system and a power conversion method, and relates to the field of electric circuits. The power converter includes: a control circuit configured to receive a first electric energy supplied to the control circuit from an energy storage device; receive a second electric energy supplied to the control circuit from a power grid equipment, and be powered on with a third electric energy which is the first electric energy or the second electric energy, and output a control signal; and a power conversion circuit configured to receive the control signal and perform power conversion between the energy storage device and the power grid equipment according to the control signal. The present disclosure can improve the reliability and safety of the process of transmitting electric energy.