An Overview of Resonant Circuits for Wireless Power Transfer
Author(s)
Jiang, Chaoqiang; Chau, K. T.; Liu, Chunhua; Lee, Ho Tin
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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
Date issued
2017-06Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Research Laboratory of ElectronicsJournal
Energies
Publisher
Multidisciplinary Digital Publishing Institute (MDPI)
Citation
Jiang, Chaoqiang et al. "An Overview of Resonant Circuits for Wireless Power Transfer." Energies 10, 7 (June 2017): 894 © 2017 The Authors
Version: Final published version
ISSN
1996-1073