Electromagnetic design method of wireless charging coil mounted under a vehicle

Hiroaki Yuasa, Nobuhiro Kibudera
BR Electric Vehicle・Charge System Development Dept, TOYOTA MOTOR CORPORATION
Norihito Kimura
Nippon Soken, Inc.

Abstract

In this presentation, we will introduce electromagnetic design method of wireless charging coil under a vehicle by using JMAG.
When wireless charging coil is mounted under a vehicle, leakage magnetic flux is interlinked to the body.
There is great impact to electromagnetic performance, such as charging efficiency , heat generation of the body, and the variation of inductance and coupling factor.
We measured electromagnetic performance under a vehicle, confirmed of the gap between the analysis and the actual measurement, and clarified loss distribution by leakage magnetic flux.
We will introduce this electromagnetic design method by using JMAG.

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