An overview of capacitively coupled power transfer — A new contactless power transfer solution

Abstract

This paper reviews the development of a new contactless power transfer technique termed as CCPT (Capacitively Coupled Power Transfer). The basic working principle and possible coupling structures of CCPT are investigated and discussed. A CCPT system is featured for its ability to transfer power through metal barriers, low standing power loss, low EMI, as well as the simplicity in circuit topologies. Opportunities and challenges such as high frequency circuits and parasitic phenomenon in CCPT are discussed and possible applications of this technique are also presented.