Resonant Frequency Characteristics of a Wireless Power Transfer System based on Dual-Receiver Configuration without Cross Coupling

This paper discusses resonant frequency characteristics of a wireless power transfer (WPT) system based on dual-receiver configuration without cross coupling. The WPT system discussed in this paper realizes the no cross coupling condition between the receivers by adjusting their arrangement. The resonant frequency and the output voltage are derived by using a simple equivalent circuit. This paper focused on the highest resonant frequency in the system and experiment are conducted its condition. The experimental results about the resonant frequency and the output voltage under the variation of coupling coefficients between the inverter and the both rectifiers are agreed with theoretical values.