A New Perspective on Resonant Circuit Design to Minimize EMF in Wireless Power Transfer Systems for Electric Vehicles

This paper proposes a novel approach to designing resonant circuits from the perspective of minimizing leakage magnetic fields. Traditional studies have primarily focused on designing resonant circuits to maximize power transfer efficiency (PTE) and power transfer capacity (PTC). However, as power levels increase, the risk of increased leakage magnetic fields becomes inevitable. Conventional methods to mitigate this issue involve the use of conductive or magnetic materials or the implementation of shielding coils. In contrast, this study introduces an innovative design methodology for resonant circuits aimed at minimizing leakage magnetic fields without relying on such additional materials or structures. Specifically, the proposed method focuses on designing resonant circuit components for the LCC-LCC topology to achieve minimal leakage magnetic fields, and its effectiveness is validated through simulation.