ELECTRIC POWER TRANSMISSION DEVICE

摘要

An electric power transmission device contactlessly transmits electric power to an electric power receiving device. The electric power transmission device includes an inverter, a power transmission unit and an electronic control unit. The electronic control unit is configured to determine whether a current phase of output current flowing from the inverter to the power transmission unit leads output voltage, and adjust a frequency of the AC power in a direction to reduce a lead angle of the current phase when leading of the current phase relative to the output voltage is detected.

主权项

1. An electric power transmission device that contactlessly transmits electric power to an electric power receiving device including a power receiving unit, the electric power transmission device comprising:
an inverter having a plurality of switching devices and a plurality of diodes, the inverter being configured to convert DC power derived from an external power supply, into AC power; a power transmission unit configured to transmit the AC power from the inverter, to the power receiving unit of the electric power receiving device; and an electronic control unit configured to control the AC power through switching control of the plurality of switching devices of the inverter, the electronic control unit being configured to determine whether a current phase of output current flowing from the inverter to the power transmission unit leads output voltage, and adjust a frequency of the AC power in a direction to reduce a lead angle of the current phase when leading of the current phase relative to the output voltage is detected.