CONTACTLESS POWER SUPPLY DEVICE AND CONTACTLESS POWER SUPPLY SYSTEM

摘要

The present invention addresses the problem of a contactless power supply device and a contactless power supply system in which the operation frequency of an inverter circuit is inhibited from entering the phase advance region. A control unit (22) varies the operation frequency of an inverter circuit (21) within a stipulated range, and measures a physical amount relating to the output power of the inverter circuit (21). When the difference between the physical amount when the operation frequency is at the lower limit of the stipulated range and the physical amount when the operation frequency is at the upper limit of the stipulated range is less than or equal to a stipulated value, the control unit (22) performs a predetermined operation so that the operation frequency does not enter the phase advance region.