Method and system for wireless power supply

A system for wireless power supply in which power is supplied wirelessly from a power transmission apparatus to a power reception apparatus,

• wherein
• the power transmission apparatus includes:
• a microwave generator configured to generate an electromagnetic wave;
• a control unit configured to control the microwave generator;
• and
• a power transmission antenna having a power transmission surface including a plurality of power transmission antenna elements, and
• the power reception apparatus includes:
• a power reception antenna having a power reception surface including a plurality of power reception antenna elements, the power reception surface being parallel and opposite to the power transmission surface;
• a reflector provided outside the power reception surface and having a reflective surface inclined at a predetermined angle with respect to the power reception surface so as to face inward;
• and
• a power conversion circuit configured to convert the power received by the power reception antenna into power to be supplied to a power supply object,
• wherein
• in a misalignment correction operation performed before a wireless power supply operation, at least two, of the plurality of power transmission antenna elements, disposed at periphery of the power transmission surface of the power transmission antenna function as position-detection power transmission antennas, and antenna elements, of the plurality of power transmission antenna elements, disposed inside the position-detection power transmission antennas on the power transmission surface function as position-detection power reception antennas, and
• the control unit is configured to detect a positional relation between the power transmission antenna and the power reception antenna based on electric power of an electromagnetic wave radiated from the position-detection power transmission antennas, reflected by the reflector, and received by the position-detection power reception antennas.