磁耦合谐振式无线电能传输方向性分析与验证

发布时间：2018-08-25 09:03

【摘要】：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。
[Abstract]:In order to solve the problem whether the angle deflection will affect the receiving electric energy in the magnetically coupled resonant radio energy transmission system, the frequency characteristics of the radio energy transmission system are analyzed by using the mutual inductance coupling theory of two hollow coils in space and the equivalent circuit. The frequency response curve of normalized voltage and the necessary condition of wireless power transmission are obtained. Then, according to the relationship between the coupling coefficient and the direction of the hollow coils placed arbitrarily in space, the directional characteristics of the system under the three states of over-coupling, critical coupling and under-coupling are proposed. Finally, the experimental circuit is designed and the related experimental research is carried out. The experimental results are in good agreement with the theoretical analysis, which verifies the directional problem in the radio energy transmission system. The analysis of directionality in this paper provides a useful reference for the design of radio energy transmission system and parameter optimization of mobile equipment.
【作者单位】：天津工业大学天津市电工电能新技术重点实验室;河北工业大学电磁场与电器可靠性省部共建重点实验室;中国电工技术学会;中国科学院电工研究所;
【基金】：国家自然科学基金(50977062、51207106、51207150) 天津市高等学校科技发展基金计划(20110411)资助项目
【分类号】：TM724

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