谐振式无线电能传输系统损耗模型

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Abstract Focusing on the power loss calculating problem in wireless power transfer system, a systematic way for analyzing and calculating all the losses is presented in the case of current-fed resonant wireless power transfer system. In traditional analytical method, switching losses of IGBT are analyzed under the ideal condition. In fact, all components of resonant inverter are not ideal and the switching processes of them are interrelated thoroughly. So more accurate analytic results can be gained when influence of IGBT’s by pass diode and resonant circuit during switching process is considered. The high frequency effect is also taken into account in coils whose internal AC resistance is presented. The experimental results are in accord with analytic results of the presented model which can be known the determiner in power losses and provides reference value for improving the system.

Key words： Power electronics wireless power transfer full bridge resonant inverter power loss model

Received: 04 September 2013 Published: 05 November 2014

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TM724

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2014/V29/I9/17

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