CONTACTLESS POWER TRANSMISSION DEVICE AND POWER TRANSFER SYSTEM

摘要

A power supply ECU executes transmission power control for controlling transmission power to target power by adjusting the duty of an output voltage of an inverter and turn-on current control for controlling a turn-on current to a target value by adjusting the drive frequency of the inverter. When a current supplied from the inverter to a power transmission unit exceeds a predetermined limit value during adjustment of the drive frequency of the inverter by the turn-on current control, the power supply ECU decreases target power in the transmission power control.

主权项

1. A contactless power transmission device, comprising:
a power transmission unit configured to transmit electric power to a power reception device in a contactless manner; a voltage-source inverter configured to supply transmission power in accordance with a drive frequency to the power transmission unit; and a control unit configured to control the inverter, the control unit executing
a first control for controlling the transmission power to target power by adjusting a duty of an output voltage of the inverter, anda second control for controlling a turn-on current by adjusting the drive frequency, the turn-on current indicating an output current of the inverter at a rising of the output voltage, when a current supplied from the inverter to the power transmission unit exceeds a predetermined limit value during adjustment of the drive frequency by the second control, the control unit decreasing the target power in the first control.