A Conformal Split-Ring Loop as a Self-Resonator for Wireless Power Transfer

Jingchen Wang; Mark Paul Leach; Eng Gee Lim; Zhao Wang; Zhenzhen Jiang; Rui Pei; Yi Huang

doi:10.1109/ACCESS.2019.2918640

IEEE Access (Jan 2020)

A Conformal Split-Ring Loop as a Self-Resonator for Wireless Power Transfer

Jingchen Wang,
Mark Paul Leach,
Eng Gee Lim,
Zhao Wang,
Zhenzhen Jiang,
Rui Pei,
Yi Huang

Affiliations

Jingchen Wang: ORCiD; Department of Electrical and Electronics Engineering, Xi’an Jiaotong-Liverpool University, Suzhou, China
Mark Paul Leach: Department of Electrical and Electronics Engineering, Xi’an Jiaotong-Liverpool University, Suzhou, China
Eng Gee Lim: Department of Electrical and Electronics Engineering, Xi’an Jiaotong-Liverpool University, Suzhou, China
Zhao Wang: Department of Electrical and Electronics Engineering, Xi’an Jiaotong-Liverpool University, Suzhou, China
Zhenzhen Jiang: Department of Electrical and Electronics Engineering, Xi’an Jiaotong-Liverpool University, Suzhou, China
Rui Pei: Department of Electrical and Electronics Engineering, Xi’an Jiaotong-Liverpool University, Suzhou, China
Yi Huang: Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, U.K.

DOI: https://doi.org/10.1109/ACCESS.2019.2918640
Journal volume & issue: Vol. 8
pp. 911 – 919

Abstract

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A conventional printed spiral coil (PSC) has a self-resonant frequency and its equivalent circuit is a parallel inductor-capacitor (LC) circuit. It is desirable to use PSCs in wireless power transfer (WPT) applications; however, these are most commonly constituted by a series-primary and series- or parallel-secondary circuit. This paper proposes a printed conformal split-ring loop with the characteristic of a series LC circuit at its resonance frequency. Regarding the loop as a self-resonator, a magnetic-resonance coupled (MRC) WPT system with series-primary and secondary operating at 433 MHz in the industrial scientific and medical (ISM) band is presented. The maximum measured power transfer efficiency is 87.9% at a transfer distance of 22 mm, the best-reported result for such a configuration.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

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