Analysis and designed of three-phase capacitive coupled wireless power transfer for high power charging system

This paper proposed a three-phase capacitive power transfer system to increase the performance of transfer power which is achieved by increasing transfer power channels. The system property is analyzed by the fundamental harmonic approximation method. In order to analyze the misalignments situation of the coupling plates, both the sending and receiving sides of the three-phase CPT system utilizes the three-phase four-wire system. A prototype of CPT system is designed and constructed with the improved three-phase transfer method which achieves an efficiency of 87.46% at maximum 2.1 kW output transfer power.