Vehicle on-board power conversion device and method for controlling vehicle on-board power conversion device

A vehicle on-board power conversion device installed in a vehicle, the vehicle including a power supply, one or more interior power supply ports arranged inside a passenger compartment of the vehicle, and one or more exterior power supply ports arranged outside the passenger compartment of the vehicle, the vehicle on-board power conversion device comprising:

• an inverter configured to convert power output from the power supply;
• and
• processing circuitry configured to control the inverter, wherein
• the inverter includes
• a first inverter circuit configured to convert power, output from the power supply, into single-phase two-wire alternating-current power and supply the single-phase two-wire alternating-current power to the one or more interior power supply ports, and
• a second inverter circuit configured to convert power, output from the power supply, into single-phase two-wire alternating-current power and supply the single-phase two-wire alternating-current power to the one or more exterior power supply ports, and
• the processing circuitry is configured to
• determine whether the vehicle is traveling, and
• when determining that the vehicle is traveling, stop or limit supply of power to at least one exterior power supply port of the one or more exterior power supply ports.