Design of a Resonant Reactive Shield With Double Coils and a Phase Shifter for Wireless Charging of Electric Vehicles

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In this paper, a novel resonant reactive shield using a double-shield coil and phase-shift circuit is proposed to reduce magnetic field leakage in electric vehicle wireless charging applications. The double-reactive shield with a four-capacitor phase shifter generates a canceling magnetic field, the phase of which is perfectly opposite to that of the incident magnetic field, effectively reducing the leakage magnetic field as a result. The concept and structure, and an equivalent-circuit model analysis of the double-reactive shield are explained and discussed. The shielding effectiveness of the double-reactive shield is compared with that of a conventional reactive shield with a single-shield coil by a simulation and is verified by experiments.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2015-03
Language
English
Article Type
Article; Proceedings Paper
Keywords

POWER TRANSFER

Citation

IEEE TRANSACTIONS ON MAGNETICS, v.51, no.3

ISSN
0018-9464
DOI
10.1109/TMAG.2014.2360701
URI
http://hdl.handle.net/10203/198826
Appears in Collection
GT-Journal Papers(저널논문)
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