Advanced Electric Power Conversion Laboratory
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Contact

Name: Minfan Fu

Email:fumf@shanghaitech.edu.cn

Address:

School of Info. Science and Tech.

ShanghaiTech University

Room 534, SIST Building 3

393 Middle Huaxia Road

Pudong, Shanghai 201210

Tel: +86-021-20684455


Congratulations! A journal paper is accepted by TIA.

P. Zhao, M. Zhou, Y. Jiang, and M. Fu*, “Horizontal Charging Area Extension Based on Switchable Relay Coils", IEEE Transactions on Industry Applications, early access.


Abstract: This paper explores the potential of relay coils (ReXs) to extend the horizontal charging area for planar inductive couplers. It focuses on the coupling mechanism and derives the equivalent coupling coefficient for model simplification. Based on the new model, an one-ReX coupler is proposed to enhance the coupling under large misalignment. Besides, the influence of coupling polarity change is evaluated and well compensated. In order to further enhance the coupling, a multiple-ReX technique is proposed and justified by a two-ReX coupler and a three-ReX coupler. The experimental result shows the enhanced coupling coefficient helps maintain the efficiency to be above 92.5% under large misalignment when the one-ReX coupler is used. With three ReXs, the achieved efficiency is further improved by 2.3%.