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Effects of Magnetic Coupling of Nonadjacent Resonators on Wireless Power Domino-Resonator Systems

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3 Author(s)
Chi Kwan Lee ; Department of Electrical and Electronic Engineering, The University of Hong Kong ; W. X. Zhong ; S. Y. R. Hui

In this paper, the effects of the magnetic coupling of nonadjacent resonators on the optimal frequency of wireless power transfer are addressed. A power analysis has been carried out to identify the adjacent and nonadjacent power flow components. It is found that such cross-coupling effects of nonadjacent resonators would cause the maximum efficiency operation to slightly shift away from the resonance frequency of the resonators. Theoretical reasons for such phenomena are provided and experimentally confirmed with practical measurements in a wireless power transfer system comprising several magnetically coupled resonators arranged in a straight domino form.

Published in:

IEEE Transactions on Power Electronics  (Volume:27 ,  Issue: 4 )