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Energies 2017, 10(11), 1752; doi:10.3390/en10111752

A Review on the Recent Development of Capacitive Wireless Power Transfer Technology

Department of Electrical and Computer Engineering, San Diego State University, San Diego, CA 92182, USA
Author to whom correspondence should be addressed.
Received: 17 October 2017 / Revised: 30 October 2017 / Accepted: 30 October 2017 / Published: 1 November 2017
(This article belongs to the Special Issue Wireless Power Transfer and Energy Harvesting Technologies)


Capacitive power transfer (CPT) technology is an effective and important alternative to the conventional inductive power transfer (IPT). It utilizes high-frequency electric fields to transfer electric power, which has three distinguishing advantages: negligible eddy-current loss, relatively low cost and weight, and excellent misalignment performance. In recent years, the power level and efficiency of CPT systems has been significantly improved and has reached the power level suitable for electric vehicle charging applications. This paper reviews the latest developments in CPT technology, focusing on two key technologies: the compensation circuit topology and the capacitive coupler structure. The comparison with the IPT system and some critical issues in practical applications are also discussed. Based on these analyses, the future research direction can be developed and the applications of the CPT technology can be promoted. View Full-Text
Keywords: capacitive power transfer; wireless power transfer; electric fields; electric vehicle capacitive power transfer; wireless power transfer; electric fields; electric vehicle

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Lu, F.; Zhang, H.; Mi, C. A Review on the Recent Development of Capacitive Wireless Power Transfer Technology. Energies 2017, 10, 1752.

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