High efficiency Capacitive Power Transfer Converter

Capacitive power transfer (CPT) is gaining interest in the last years in the field of wireless power transfer for different applications, like vehicle charging or portable equipment battery charging. CPT exhibits better tolerance to misalignment and requires simpler hardware design than Inductive Power Transfer (IPT) in some cases. In this paper, a Wireless Capacitive Power Transfer Converter is studied and implemented, which gives a very high efficiency in the inverter and the resonant tank and demonstrates the feasibility of this technology.