Wireless power supply system

A wireless power supply system that supplies power on a power supply floor, in a contactless manner, to a car moving in a hoistway of an elevator, the wireless power supply system comprising:

• a power transmission unit that is provided on a side of the hoistway to supply the power in the contactless manner;
• a power reception unit that is provided on a side of the car to receive the power, in the contactless manner, supplied from the power transmission unit;
• a controller to control the power transmission unit and the power reception unit;
• and
• a power storage to store the power received by the power reception unit and supply the power to a load provided in the car,
• wherein the power transmission unit includes a plurality of power transmission coils provided along the hoistway and at least one power transmitter that supplies the power to each of the plurality of power transmission coils,
• the power reception unit includes a plurality of power reception coils provided on a surface of the car opposite to the power transmission coil and at least one power receiver that receives the power from each of the power reception coils,
• the plurality of power transmission coils include at least a first power transmission coil and a second power transmission coil, and
• a length of the second power transmission coil in a traveling direction of the car is longer than a length of the first power transmission coil.