CONTACTLESS POWER TRANSMISSION DEVICE AND POWER TRANSFER SYSTEM

摘要

A power supply ECU executes turn-on current control for controlling a turn-on current It to a target value Itr by adjusting a drive frequency f, turn-on current It indicating an output current Io of an inverter at a rising of an output voltage Vo of the inverter. Target value Itr is set to fall within a range where a recovery current is not produced in the inverter. In the turn-on current control, when a startup frequency indicating drive frequency f at a startup of the inverter is fa0, the control unit adjusts drive frequency f to be more than or equal to fa0. When turn-on current It is larger than target value Itr, the control unit adjusts drive frequency f in the direction toward startup frequency fa0.

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 turn-on current control for controlling a turn-on current to by adjusting the drive frequency, the turn-on current indicating an output current of the inverter at a rising of an output voltage of the inverter, in the turn-on current control, when a startup frequency indicating the drive frequency at a startup of the inverter is a first frequency, the control unit adjusting the drive frequency to be more than or equal to the first frequency, and when the startup frequency is a second frequency which is higher than the first frequency, the control unit adjusting the drive frequency to be less than or equal to the second frequency, when the turn-on current is larger than a predetermined limit value, the control unit adjusting the drive frequency in a direction toward the startup frequency.