WIRELESS POWER SUPPLY SYSTEM, AND POWER TRANSMISSION DEVICE

A wireless power supply system is a system wirelessly supplying electric power through electromagnetic waves. The wireless power supply system includes a power transmitter (1) transmitting an electromagnetic wave (2), and a plurality of power receivers (3) disposed on a rotatable object (9) that rotates around a rotation axis (8) and receives the electromagnetic wave (2). Further, the plurality of power receivers (3) of the wireless power supply system is disposed such that at least one of the plurality of power receivers (3) is located within a coverage area formed by the electromagnetic wave (2) transmitted by the power transmitter (1).