Power receiving device, power transmitting device and control device

摘要

There provided a power receiving device connectable with a first load (14) circuit operating according to AC power (11) from a power transmitting device (12) in which the power receiver receives the AC power (11) from the power transmitting device (12) via magnetic coupling, the impedance adjuster(13) is capable of converting at least one of voltage and current of the AC power (11) received at the power receiver, the controller (15) controls increase in output voltage of the power transmitting device, the AC power (11) is supplied to the first load circuit via the impedance adjuster (13) when the first load circuit (14) is connected to the power receiving device, and the controller (15) controls the impedance adjuster (13) such that an input impedance of the impedance adjuster (13) is lower than an input impedance of the first load circuit (14) during at least a part of a time period where the output voltage of the power transmitting device (12) is increased.