谐振式无线电能传输系统损耗模型

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摘要针对无线电能传输系统损耗的量化计算问题,本文以电流型谐振式无线电能传输系统为例,对其损耗进行了完整的分析与计算。考虑了电流型全桥谐振变换器开关管的旁路二极管和谐振回路带来的环流影响,使得建立的逆变器的损耗模型更为精确。该模型还充分考虑了高频效应带来的影响,给出了耦合机构的高频内阻计算公式。实验结果验证了模型的正确性和有效性。通过该模型可得到系统损耗的主要组成部分及主要决定因素,对无线电能传输系统的设计与改进具有重要的参考意义。

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关键词 ：电力电子, 无线电能传输, 全桥谐振变换器, 损耗模型

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

收稿日期: 2013-09-04 出版日期: 2014-11-05

PACS:

TM724

基金资助:国家自然科学基金（51207173）和高等学校博士学科点专项科研基金（20100191120024）资助项目

作者简介: 王智慧男,1980年生,博士,副教授,研究方向为无线电能传输及电力电子变流技术；吕潇男,1987年生,博士研究生,研究方向为无线电能传输优化与控制技术。

引用本文:

王智慧, 吕潇, 孙跃, 苏玉刚. 谐振式无线电能传输系统损耗模型[J]. 电工技术学报, 2014, 29(9): 17-21. Wang Zhihui, Lü Xiao, Sun Yue, Su Yugang. Modeling of Power Loss in Resonant Wireless Power Transfer System. Transactions of China Electrotechnical Society, 2014, 29(9): 17-21.

链接本文:

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

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