Simulation and experimental study demonstrates optimal switching regions in a resonant power transfer system, indicating viable design methods for high-efficiency wireless converters.
In this paper, the resonance and switching characteristics of a wireless power transfer system employing a planar ferrite sheet are analyzed. The proposed wireless power transfer system seeks to establish an optimal design methodology for wireless power transmission based on a full-bridge converter employing four switching devices. To this end, the switching characteristics were analyzed through theoretical operating waveforms and mode analysis. Based on the equivalent circuit of the resonant compensation network, the zero-voltage switching (ZVS) and zero-current switching (ZCS) operating regions, along with the voltage gain characteristics as functions of magnetizing inductance and load conditions, were evaluated using MATLAB. Furthermore, by comparing the PSIM simulation results with the experimental results, the effectiveness of the proposed system was validated, and an optimal design procedure for a 200-W wireless power transfer system is presented and discussed.
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Jin-Yong Bae (2026) studied this question.
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