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Mid-Distance Wireless Power Transfer System Using E-Class Amplifier
Pages: 7-11
Year: Issue:  9
Journal: Transactions of China Electrotechnical Society

Keyword:  Wireless power transferE-class amplifierhigh powermid-distance;
Abstract: This paper represents one kind of high-power wireless power transfer(WPT) system with low cost, easy debug and high efficiency. Firstly, conducting angle, LC filter parameters and impedance transformer problem of high-power E-class amplifier are analyzed. Then, equivalent circuit model of magnetic resonance WPT system is established considering four mutual inductive coils. Furthermore, a calculation method of equivalent input impedance is proposed. Finally, aiming at minimizing device power loss and restricting device breakdown and input voltage, a WPT system, which can transfer 3kW power over 22 cm with 85% efficiency, is built up to verify the method.
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