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

Fei Lu, Hua Zhang and Chris Mi
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Fei Lu: Department of Electrical and Computer Engineering, San Diego State University, San Diego, CA 92182, USA
Hua Zhang: Department of Electrical and Computer Engineering, San Diego State University, San Diego, CA 92182, USA
Chris Mi: Department of Electrical and Computer Engineering, San Diego State University, San Diego, CA 92182, USA

Energies, 2017, vol. 10, issue 11, 1-30

Abstract: 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.

Keywords: capacitive power transfer; wireless power transfer; electric fields; electric vehicle (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 (19)

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