WIRELESS POWER TRANSMITTING APPARATUS AND CONTROL METHOD FOR SUCH APPARATUS

摘要

A wireless power transmitting apparatus (10) is a wireless power transmitting apparatus which transmits electric power in a wireless manner by electromagnetic induction to a power receiving apparatus (20) which is provided with a power reception coil (220) and a fixed capacitance capacitor (230) electrically connected in parallel with the power reception coil. The wireless power transmitting apparatus is provided with: an alternating current power supply (110) which generates alternating current power; a power transmission coil (120) which is electrically connected to the alternating current power supply; a variable capacitance capacitor (130) which is electrically connected in series with the power transmission coil; and a capacitance controlling device (140) which controls a capacitance value of the variable capacitance capacitor to reduce a phase difference between a voltage phase and a current phase of the alternating current power.

主权项

1. A wireless power transmitting apparatus which transmits electric power in a wireless manner to a power receiving apparatus disposed in a moving body, said wireless power transmitting apparatus comprising:
a power transmission coil; a variable capacitance capacitor which is electrically connected with the power transmission coil; a type obtaining device configured to obtain a type of the moving body in which the power receiving apparatus is disposed; and a capacitance controlling device configured to control capacitance of the variable capacitance capacitor on the basis of the obtained type.