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多中继线圈的无线电能传输系统效率分析

, PP. 35-42

Keywords: 耦合模理论,电磁耦合谐振,无线电能传输,最大效率

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Abstract:

电磁耦合谐振式无线电能传输系统的传输效率与传输距离是矛盾的,一般来说系统的传输距离越远,系统的传输效率就越低。为了同时达到较远的传输距离和较高的传输效率,本文提出了一种多中继线圈的无线电能传输系统。运用瞬态耦合模理论,推导出了系统的效率表达式,并以此为基础,分析了系统传输效率的变化规律。当发射线圈与中继线圈之间的耦合系统和中继线圈与接收线圈之间的耦合系统相等且发射线圈与接收线圈之间的耦合系统等于零时,系统的传输效率最高。最后,研制了一套磁耦合谐振式无线电能传输系统装置。仿真和实验结果验证了理论分析的正确性。

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