摘 要

近几年，在相关领域中，谐振式无线电能传输技术作为一个主要研究方向，越来越多的学者们开始关注。由于该技术拥有的传输距离较大、提供的传输效率较高，而且不存在辐射和渗透，因此，具有重要的深究价值和良好的发展前景。然而，随着工业的不断发展以及生活方式的转变，如果要能大规模的投入应用，“单负载”模式的无线传输系统显然无法做到，这时候“多负载”无线传输系统的研究就显得尤为重要。由于“多负载”模型的线圈数量大于二，除了发射线圈与接收线圈之间存在能量交换外，接收线圈之间也会有微弱的能量交换，当它们同时与发射线圈发生谐振时，系统的传输原理、功率及效率都是值得深入研究的问题。为了解决这些问题，做了以下一些工作：：

首先论文介绍了谐振式无线电能传输技术的起源、国内外发展现状、存在的问题和发展前景。

其次介绍了双负载传输系统的结构、模型以及工作原理，在研究了电路理论模型的基础上，给出了该种模型下系统的传输功率、效率的计算式子及相应的条件。从考虑交叉耦合效应和不考虑交叉耦合效应两种情况出发，通过MATLAB数值仿真分析了交叉耦合效应对系统传输特性的影响，并得到了相应的曲线图。

最后假设在线圈电路上增加电抗能够抵消交叉耦合效应，然后在这种情况下，给出了具体的分析和仿真结果，证明了这种假设是正确的，为之后的研究做了一点贡献。

关键词： 双负载谐振式无线电能传输 数值仿真 电抗补偿

A study of magnetically coupled resonant radio energy transmission system

ABSTRACT

In recent years, as one of the main research directions in the field of wireless power transfer, wireless power transfer via magnetic coupling resonance has attracted more and more attention. Because the technology can not only provides long transmission distance, high transmission efficiency, but also has non-radiation and strong penetration. Therefore, it has important research value and good prospect. However, with the industrial development and the change in our life, if we want it to be able to be putted into large-scale applications, the single load model of wireless transmission system is obviously impossible. At this time, the research of multi load wireless transmission system is particularly important. But, due to the number of coils of the multi load model is greater than two, in addition to the energy ring between the transmitting coil and the receiving coil, there is also a weak energy exchange between the receiving coils. When they are simultaneously resonant with the transmitting coils, the transmission principle, power and efficiency of the system are worthy of further study. In order to solve these problems, we did the following work.

Firstly, the paper introduces the origin of resonant radio transmission technology, domestic and international development status, existing problems and development prospect.

Secondly, the structure, model and working principle of dual-load transmission system are introduced, in contrast to the study based on the circuit theory model, the transmission power, efficiency expression and corresponding conditions of the model are derived. Starting from two conditions, the cross coupling effect and the cross coupling effect are not considered, it analyses the factors that influence the transmission characteristic of the system through the MATLAB numerical simulation and get the characteristics of the corresponding diagram.

Finally, a method of compensating the cross coupling effect by adding additional reactance in the loop is proposed, and the feasibility and effectiveness of the compensation method are verified by simulation, which provides a reference for the following research.

KEYWORDS: Double Load Wireless Power Transfer via Magnetic Coupling Resonance；Numerical simulation；Reactance Compensation

目 录

摘 要 I

ABSTRACT II

第一章 绪论 1

1.1 课题研究目的和意义 1

1.2 谐振式无线电能传输技术国内外研究现状 1

1.2.1 谐振式无线电能传输技术国外研究现状 1

1.2.2 谐振式无线电能传输技术国内研究现状 3

1.3 课题研究主要内容 10

第二章 双负载谐振式无线电能传输平台的搭建 11

2.1 双负载谐振式无线电能传输系统的发射端设计 11

2.1.1 驱动电路 12

2.1.2 逆变电路 12

2.1.3 频率跟踪电路 13

2.1.4线圈谐振耦合电路 13

2.2 双负载谐振式无线电能传输系统的接收端设计 13

第三章 双负载谐振式无线电能传输数学模型及特性分析 15

3.1 谐振式无线电能传输系统 15

3.1.1 传输系统的理论基础 15

3.1.2 电能传输的基本结构 16

3.2 基于电路理论的双负载谐振式无线电能传输系统模型 17

3.2.1双负载无线充电系统的工作原理 17

3.2.2双负载无线充电系统的传输模型 17

3.2.3不考虑交叉耦合时系统的最佳工作状态 19

3.2.4考虑交叉耦合的影响 20

3.3 本章小结 21

第四章 交叉耦合效应的电抗补偿 23

4.1 电抗补偿原理 23

4.2 补偿电抗的实现 25

4.3 数值仿真与实验结果 25

4.4 本章小结 28

第五章 总结与展望 29

5.1 论文总结 29

5.2 工作展望 29

参考文献 31

附录 35

致谢 39

第一章 绪论

1.1 课题研究目的和意义

与传统的有线输电方式相比，无线电能传输技术凭借着安全性高和可靠性好的优势被人们关注并且广泛应用，该技术克服了有线输电方式的各种不足，比如导线表皮受高温和雨水侵蚀而出现的漏电现象、电线的接线脱线问题给生活带来的不便，并且无线充电技术凭着不受空间限制的特点在电动汽车、场地机器人、医疗设备、水下作业、油田矿井等特殊领域发挥着无可比拟的作用，成为了近几年国内外研究的热点之一。

按照功率传输原则，无线电能传输通常可以归类成感应式、辐射式和谐振式无线电能传输三种^[1-2]。

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