POWER SUPPLYING DEVICE AND METHOD FOR SUPPLYING ELECTRIC POWER TO ONE OR MORE POWER RECEIVING DEVICES IN WIRELESS POWER SUPPLY SYSTEM

摘要

A power supply device according to an embodiment includes a plurality of transmitters in the power supply device, each transmitter is an AC power generator, a transmission coil connected to the AC power generator, and power applied to the AC power generator. a power sensing circuit and a current sensing circuit for sensing a current applied to the transmitting coil, and a control circuit electrically connected to the plurality of transmitters, wherein the control circuit receives power using the plurality of transmitters A first current having a default value in a first transmitting coil of a first transmitter and a second transmitting coil of a second transmitter for sensing a device and supplying power to the power receiving device among the plurality of transmitters, respectively; supplying a second current, and changing the first current transmitted to the first transmitting coil from the initial value to a first value so that the first transmitter and the second transmitter satisfy the first condition, the second transmitting coil It may be set to change the second current transmitted from the initial value to the second value.