An Overview of Resonant Circuits for Wireless Power Transfer

Chaoqiang Jiang, K. T. Chau, Chunhua Liu and Christopher H. T. Lee
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Chaoqiang Jiang: Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong, China
K. T. Chau: Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong, China
Chunhua Liu: School of Energy and Environment, City University of Hong Kong, Hong Kong, China
Christopher H. T. Lee: Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA

Energies, 2017, vol. 10, issue 7, 1-20

Abstract: With ever-increasing concerns for the safety and convenience of the power supply, there is a fast growing interest in wireless power transfer (WPT) for industrial devices, consumer electronics, and electric vehicles (EVs). As the resonant circuit is one of the cores of both the near-field and far-field WPT systems, it is a pressing need for researchers to develop a high-efficiency high-frequency resonant circuit, especially for the mid-range near-field WPT system. In this paper, an overview of resonant circuits for the near-field WPT system is presented, with emphasis on the non-resonant converters with a resonant tank and resonant inverters with a resonant tank as well as compensation networks and selective resonant circuits. Moreover, some key issues including the zero-voltage switching, zero-voltage derivative switching and total harmonic distortion are addressed. With the increasing usage of wireless charging for EVs, bidirectional resonant inverters for WPT based vehicle-to-grid systems are elaborated.

Keywords: magnetic resonance; wireless power transfer; non-resonant converters; resonant inverters; compensation networks; selective resonant circuits (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (30)

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