NDLI: A Method of Using Nonidentical Resonant Coils for Frequency Splitting Elimination in Wireless Power Transfer

Content Provider	IEEE Xplore Digital Library
Author	Yue-Long Lyu Fan-Yi Meng Guo-Hui Yang Bang-Jun Che Qun Wu Li Sun Erni, D. Li, J.L.-W.
Copyright Year	1986
Abstract	In this paper, an efficient method is proposed to eliminate frequency splitting in nonradiative wireless power transfer via magnetic resonance coupling. In this method, two nonidentical resonant coils (NIRCs) are used as wireless power transmitter and receiver, respectively. According to the elliptic integral term in the analytical expression, the pole of the mutual inductance function with respect to transfer distance can be eliminated by using the two NIRCs, and hence overcoupling between transmitter and receiver with close transfer distance is avoided. Therefore, frequency splitting caused by overcoupling can be suppressed and stable output power can be achieved. The NIRCs are analytically calculated, numerically simulated and finally, fabricated and tested to verify the theory. All the calculated and experimental results show that frequency splitting is completely eliminated and uniform voltage across the load is achieved. Furthermore, lateral misalignment between the NIRCs barely introduces frequency splitting, and the suppression level of frequency splitting can also be controlled freely.
Sponsorship	IEEE Power Electronics Society
Starting Page	6097
Ending Page	6107
Page Count	11
File Size	1025530
File Format	PDF
ISSN	08858993
Volume Number	30
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Coils Transmitters Couplings Receivers Inductance Magnetic resonance wireless power transfer (WPT) Frequency splitting magnetic resonance coupling nonidentical resonant coils nonidentical resonant coils (NRCs)
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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