Abstract
Starting from a brief overview of two-coil wireless power transfer (WPT) system, a transmitter current tracking method is realized to improve the power-transfer efficiency of the system. The fixed-load receiver is allowed to be moved to nearly any position within the system's working range, and the system still achieves a near maximum power-transfer efficiency. The simulation results show that the proposed method can be used to improve the WPT system's efficiency more rapidly and more accurately.
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