This article proposes a novel method for controlling the resonance frequency of the receiver coil in magnetically coupled resonance-based wireless power transmission. We utilize the output voltage levels at the receiving coil corresponding to different operating frequencies by adjusting the tuning capacitor. The acquired data points were then parameterized using Gaussian model, whose mean is used to indicate the location of resonance frequency. This procedure is iterated to fine tune the resonant frequency of the receiver circuit to that of the transmitter circuit thereby improving the overall efficiency of the wireless power transfer system. Proposed method is validated with theoretical formulation and experimental prototype of the wireless power transfer system.
Wireless Power Transmission, Strongly Coupled Magnetic Resonance, Frequency Adaptation
