METHOD AND APPARATUS FOR CONTROLLING INPUT CURRENT AND INPUT PHASE FOR IMPROVING DEGREE OF FREEDOM OF RECEIVER IN WIRELESS POWER TRANSMISSION SYSTEM

摘要

The present invention relates to a wireless power transmission system for improving a degree of freedom of a receiver. According to an embodiment of the present invention, a wireless power transmission apparatus comprises: a power transmission coil unit including a first power transmission coil and a second power transmission coil; a drive control unit generating a first control signal for applying a first drive voltage having a first phase to the first power transmission coil and generating a second control signal for applying a second drive voltage having a second phase to the second power transmission coil; and a coil drive unit applying a first drive signal and a second drive signal to the first power transmission coil and the second power transmission coil.