POWER TRANSFER SYSTEM, POWER TRANSFER DEVICE, POWER RECEPTION DEVICE, AND WIRELESS POWER TRANSFER METHOD

A power transfer device including an AC power source unit and a single power transfer element, and a power reception device including a single power reception element electrically coupled to the power transfer element and a power reception circuit outputting power are included. The power reception circuit includes a different potential field disposed at a position that is an electric field formed by the power transfer element and at which intensity of the electric field is different from intensity of an electric field formed at a position of the power reception element.