论文总字数：33181字

摘 要

无线电能传输是一项具有极大应用远景的崭新的技术，主要包括电磁感应耦合式、微波辐射式和磁耦合谐振式这三类不同的传输方式。磁耦合谐振式和其他两种方式相比，在传输特性上有较大的优势，拥有非辐射性、无阻碍性等优点，因此得到了广泛的关注和研究。

本文首先主要介绍了无线电能传输技术的背景及其分类，着重阐述了磁耦合谐振式技术的国内外研究现状、发展趋势和存在的主要问题。

然后基于近区磁场理论和耦合模理论这两大理论基础，分析磁耦合谐振式系统的工作原理与基本结构，根据线圈结构的不同分别简要介绍了两线圈结构、四线圈结构和含有中继线圈的结构，并结合线圈的不同结构来进一步分析系统的传输特性。

接着针对简单的两线圈串联结构电路，建立谐振式系统的电路模型，推导出系统的传输效率公式，研究耦合线圈各参数包括线圈半径、线圈匝数、耦合系数、线圈线径和传输距离等与传输效率的关系，并利用Matlab仿真软件对耦合线圈优化设计。

最后设计小功率谐振式无线电能传输系统，从系统的整体结构框架出发，对发射电路和接收电路进行选型和设计。就发射电路而言，介绍了高频逆变电路的选择要求，E类功率放大电路的工作原理和开关管、驱动电路的选择与设计；对接收电路来说，分别对整流电路、滤波电路和稳压电路这三大模块选择合适的电路结构与元件。再利用Multisim仿真软件分别搭建模型并分析验证其可行性和正确性。

关键词：无线电能传输 磁耦合 谐振 传输特性 高频电源

Study on the Characteristics of Magnetically-coupled Wireless Power Transmission System

Abstract

Wireless power transmission is a new technology which has great prospects for application. It mainly includes three different transmission modes: electromagnetic induction coupling, microwave radiation and magnetic coupling resonant. Compared with the other two ways, magnetic coupling resonant wireless power transmission technology has great advantages on the transmission characteristics, such as non-radiation and strong penetration. As a result, it has received extensive attention and research.

This paper mainly introduces the research background and classification of the wireless power transmission technology. It focuses on the research status at home and abroad, development trend and major existing problems of the magnetic coupling resonant wireless power transmission technology.

Then, based on the two major fundamental theories including near zone magnetic field theory and coupled-mode theory, it analyzes the working principle and basic structure of the magnetic coupling resonant wireless power transmission system. According to the different structures of coil, the two-coil structure, the four-coil structure and the structure of the relay coil are introduced. And it combines with the different structures of coil for further analysis of the transmission characteristics of the system.

After that, a circuit model of the magnetic coupling resonant wireless power transmission system is constructed to derive the transmission efficiency formula of the system on account of the simple two-coil series circuit. Following, it studys on the relationship of the transmission efficiency and the parameters of coupling coil including the radius of the coil, coil turns, coupling coefficient, coil diameter and transmission distance and so on, using the MATLAB simulation software to optimally design the coupling coil.

Finally, Starting from the overall framework of the system, the low power magnetic coupling resonance wireless power transmission system is designed, including the selection and design of the transmission circuit and the receiving circuit. In the emission circuit, it introduces the selection of high frequency inverter circuit, the operational principle of class E power amplification electric circuit and the selection and design of the switch tube and driving circuit. In the receiver circuit, suitable circuit structures and components are choosen respectively according to the rectifying circuit, the filter circuit and the voltage stabilizing circuit. To analysis and verify its feasibility and correctness, the Multisim simulation software is used to build the model respectively.

Keywords: wireless power transmission; magnetic coupling; resonance; transmission characteristics; high frequency power supply

目 录

摘 要 I

Abstract II

目 录 IV

第一章 绪论 1

1.1 课题研究背景及意义

1.2 无线电能传输系统概述

1.2.1 电磁感应耦合式

1.2.2 微波辐射式

1.2.3 磁耦合谐振式

1.2.4 三种传输方式的对比

1.3 谐振式无线电能传输技术国内外研究现状和发展趋势

1.3.1 国外研究现状

1.3.2 国内研究现状

1.3.3 存在的主要问题与发展趋势

1.4 本文研究的主要内容与结构安排

第二章 磁耦合谐振式无线电能传输原理与结构分析 11

2.1 磁耦合谐振式无线电能传输的工作原理

2.1.1 近区磁场理论

2.1.2 耦合模理论

2.2 磁耦合谐振式无线电能传输系统的基本结构

2.2.1 两线圈结构和四线圈结构

2.2.2 含中继线圈的结构

2.3 本章小结

第三章 磁耦合谐振式无线电能传输系统耦合线圈的优化设计 17

3.1 基于电路理论的磁耦合无线电能传输系统模型

3.1.1 两线圈结构的电路模型

3.1.2 两线圈串联电路的建模

3.2 磁耦合谐振式电路模型的分析

3.2.1 耦合线圈各参数对传输效率的影响

3.2.2 耦合线圈的优化设计

3.3 本章小结

第四章 小功率磁耦合谐振式无线电能传输系统的设计 27

4.1 系统整体结构设计

4.2 高频电源的设计与分析

4.2.1 高频逆变电路的选型

4.2.2 E类功率放大电路的工作原理

4.2.3 E类功放电路开关管的选择和驱动电路的设计

4.2.4 E类逆变电路仿真分析

4.3 接收电路的选型与设计

4.3.1 整流电路

4.3.2 滤波电路

4.3.3 稳压电路

4.3.4 接收电路的仿真分析

4.4 本章小结

第五章 总结与展望 42

5.1 本文总结

5.2 工作展望

参考文献 44

附 录 47

致 谢 49

第一章 绪论

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