论文总字数：24927字

摘 要

随着人们生活水平的提高，传统的有线充电方式已无法满足人们的需求，于是本文在这个背景下侧重研究了，近年来受到国内外广泛关注的无线电能传输。

本文主要研究了无线电能传输中的一种：磁耦合谐振电能传输，通过利用电路的基波等效模型，推导了电路在自激状态下的控制策略，针对磁耦合谐振电能传输技术中的串串补偿拓扑，分析了在系统完全补偿状态下的系统基本工作特性，包括输出电压增益、转移阻抗特性、自激工作点的讨论，最后讨论了输入阻抗的特性。得出在串串补偿结构下，当系统完全补偿时，输出电压基本与负载无关，且副边电流与逆变电压总是同相的，同时根据对输入阻抗的分析，可得出原边电压总是超前原边电流一个角度的。通过对自激控制策略的推导，提出一种频率跟踪控制的闭环控制方法，可以是系统工作频率始终跟随线圈谐振频率，使系统的工作更加稳定，最后利用Matlab/Simulink搭建串串补偿结构的仿真模型，并对系统进行仿真实验，验证了气隙在10mm和20mm的情况下负载无关的特性以及频率跟踪控制策略的可行性，对以后的研究有一定指导意义。

关键词：无线电能传输，磁耦合谐振，频率跟踪控制，Matlab/SimulinK

Abstract

With the improvement of people's living standards, the traditional wired charging methods can no longer meet people's needs. Therefore, this article focuses on research in this context. In recent years, radio energy transmission has received widespread attention at home and abroad.

This article mainly studies one of the radio energy transmission: magnetically coupled resonant power transmission. By using the fundamental wave equivalent model of the circuit, the control strategy of the circuit in the self-excited state is deduced, aiming at the string in the magnetic coupling resonant power transmission technology. In the string compensation topology, the basic operating characteristics of the system under full compensation are analyzed, including output voltage gain, transfer impedance characteristics, and self-excitation operating points. Finally, the characteristics of the input impedance are discussed. It is concluded that in the string compensation configuration, when the system is fully compensated, the output voltage is basically independent of the load, and the secondary current and the inverter voltage are always in phase. At the same time, according to the analysis of the input impedance, the total primary voltage can be obtained. It is an angle ahead of the primary current. Through the derivation of the self-excitation control strategy, a closed-loop control method of frequency tracking control is proposed, which can be that the system operating frequency always follows the resonant frequency of the coil, which makes the system work more stable. Finally, the simulation of string string compensation structure using Matlab/Simulink is established. The model and the simulation experiment of the system verify the characteristics of the air-gap in the case of 10mm and 20mm load-independent and the feasibility of the frequency tracking control strategy. It has certain guiding significance for the future research.

KEY WORDS: Radio transmission，Magnetically-Coupled Resonant ，

Frequency tracking control，Matlab/SimulinK

目录

摘要 I

Abstract II

第一章 绪论 1

1.1研究背景及意义 1

1.2无线电能传输分类 1

1.2.1 电磁感应耦合式 2

1.2.2 磁耦合谐振式 3

1.2.3 辐射式 5

1.2.4 其他形式无线电能传输技术 5

1.3 磁耦合谐振国内外研究现状 6

1.3.1 国外研究现状 6

1.3.2 国内研究现状 6

1.4 磁耦合谐振研究热点与发展动向 7

1.5 论文主要内容安排 7

第二章 磁耦合谐振式电能传输系统原理分析 8

2.1磁耦合谐振系统基波等效模型 8

2.2串串补偿磁耦合谐振系统基波等效模型 8

2.3磁耦合谐振系统自激控制推导 11

2.3.1 串串补偿 11

2.3.2 串并补偿 12

2.3.3 并串补偿 14

2.3.4 并并补偿 15

2.4本章小结 15

第三章 串串补偿谐振系统工作特性的分析 16

3.1 输出电压增益 16

3.2 转移阻抗特性 17

3.3 谐振系统工作点的讨论 18

3.4 输入阻抗 19

3.5 本章小结 20

第四章 仿真结果分析 21

4.1 MATLAB仿真软件介绍 21

4.2仿真模型的建立 21

4.2.1 建立发射回路模型 21

4.2.2 谐振线圈模型 21

4.2.3 建立接收回路模型 22

4.2.3 频率跟踪控制 22

4.3系统参数设计 23

4.3.1 确定系统线圈参数 23

4.3.2 确定系统频率 23

4.3.3 原副边谐振电容的选择 24

4.4仿真波形分析 29

4.5本章小结 29

第五章 总结 30

致谢 31

参考文献 32

第一章 绪论

1.1 研究背景及意义

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