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磁耦合谐振式无线电能传输方向性分析与验证

, PP. 197-203

Keywords: 无线电能传输,磁耦合谐振,耦合因数,方向性

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Abstract:

针对在磁耦合谐振式无线电能传输系统中角度偏转是否会对接收电能产生影响的问题,首先利用空间两空心线圈的互感耦合理论和等效电路分析无线电能传输系统的频率特性,得到归一化电压的频率响应曲线和电能无线传输的必要条件。然后根据空间任意放置的空心线圈的耦合系数与方向的关系分析方向改变对耦合因数的影响,提出系统在过耦合、临界耦合和欠耦合三种状态下的方向特性。最后,设计了实验电路并进行了相关的实验研究,实验结果与理论分析具有较好的一致性,验证了无线电能传输系统中方向性的问题。本文关于方向性的分析为移动设备的无线电能传输系统设计和参数优化提供有益的参考。

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