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

Author

Lee, Chi Kwan ; Zhong, W.X. ; Hui, S.Y.R.

Author_Institution

Dept. of Electr. & Electron. Eng., Univ. of Hong Kong, Hong Kong, China

Volume

27

Issue

4

fYear

2012

fDate

4/1/2012 12:00:00 AM

Firstpage

1905

Lastpage

1916

Abstract

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.

Keywords

electromagnetic coupling; inductive power transmission; microwave resonators; cross-coupling effects; magnetic coupling; nonadjacent power flow components; nonadjacent resonators; power analysis; resonance frequency; wireless power domino-resonator systems; wireless power transfer system; Energy efficiency; Magnetic resonance; Mathematical model; Relays; Windings; Wireless communication; Electromagnetic coupling; magnetic induction; wireless power transfer;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2011.2169460

Filename

6026958