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Original research DESIGN AND ANALYSIS OF WIRELESS POWER TRANSFER SYSTEM (WPT), A COMPARATIVE STUDYPages 103-110 Abstract
Wireless power transfer system (WPT) is basically electrical system consisting from two coils that transfer electric power without wires through specified distance. The output power and transmission efficiency are decreased by the leakage and magnetizing inductance caused by the air gap between the primary and secondary coils. A compensation network is required to offset leakage inductance and magnetizing inductance. According to the various methods of compensation. The most common compensation topologies are series-series (SS), series-parallel (SP), parallel-series (PS), and parallel-parallel (PP). In this paper. These four common compensation topologies, are investigated and compared with respect to their transmission characteristics and performance parameters. The effect of coupling factor (k) that related to the distance between source and load. Is also studied at different compensation technique and at operating frequency. The obtained efficiency is noticed the higher coupling coefficient value, the higher the power transfer efficiency, that 98% at k=0.9.
Keywords: WPT, compensation topologies, power transfer efficiency, coupling coefficient, resonance frequency.
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Sarah Ghassan, 
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