Design and research of a double-sided flux coupler in inductive power transfer system

Inductive Power Transfer (IPT) has proved its capability as a safe, convenient and efficient solution for electric vehicle (EV) charging systems through loosely coupled transformer. Transformer with double-sided windings is expected to be more compact and lightweight than transformer with single-sided windings. In this paper, a solenoid double D (SDD) coil is proposed to have a good interoperability with the double D (DD) coil and the unipolar coil. To ensure high power transfer efficiency, tolerance for different gap variation and horizontal misalignment conditions are investigated in IPT systems. A 3D finite element modeling tool, Maxwell, is used to simulate all the models presented in this paper.

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