EFFICIENT WIRELESS POWER CHARGING APPARATUS AND METHOD THEREFOR

The present disclosure relates to an efficient wireless power charging apparatus and a method thereof. The wireless power charging apparatus includes: a plurality of transmitters each including a transmission resonance unit configured to transmit power using power provided from a power unit and including one capacitor and one inductor; a receiver including a reception resonance unit configured to receive power transmitted from the plurality of transmission resonance units and including one capacitor and one inductor, and a load performing charging using received power; and a control unit configured to determine mutual inductance between each of the transmission resonance units and each of the reception units and equivalent load impedance of the receiver, configured to determine any one of the plurality of transmitters as a reference transmitter and determine a current ratio between the reference transmitter and another transmitter, and configured to determine an output current of each of the plurality of transmitters using each of the mutual inductances, the equivalent load impedance of the receiver, and the current ratio between the reference transmitter and another transmitter.