Trans-Reciever Coil Design for Inductive Wireless Power Transfer in Static Electric Vehicle Charging

The wireless power transfer (WPT) method suffers from the problem of flux leakage between the trans-receiver coil pair which increases with an increase in the gap between them. The high-frequency excitation is induced in vehicle assembly from ground assembly. Here, the geometry of coils plays an important role in minimizing the flux leakage. To a certain extent, this flux leakage could be enhanced by using ferrite cores and high-conduction coils. In this paper, various regular geometry for trans-receiver coil pairs is discussed using finite element analysis tool, Ansys Maxwell. The high-frequency excitation of 800 V is supplied at 85 kHz and an investigation is done for the best coupling coefficient.