Power conversion device

A power conversion device comprising:

• a pair of input terminals to which AC power is input;
• an inverter circuit that includes an LC resonance circuit and generates a high-frequency AC current from the AC power input to the pair of input terminals;
• a rectifier circuit that rectifies the high-frequency AC current generated by the inverter circuit and outputs a rectified current to a load;
• and
• a control unit that includes a microcontroller and controls a switching operation of the inverter circuit, wherein the inverter circuit includes:
• a bidirectional switch that switches a direction and an on/off state of a current flowing between the pair of input terminals;
• a shunt capacitor that is connected between the pair of input terminals in parallel to the bidirectional switch;
• and
• a choke inductor that is connected between the bidirectional switch and at least one input terminal of the pair of input terminals, and
• the control unit changes an on-duty of a switching operation of the bidirectional switch according to a polarity of an input voltage of the pair of input terminals.