MATLAB电动汽车无线充电技术原理研究
摘要环保节能使电动汽车成为国内外研究热点，供给端和接收端非接触能量传输的无线传输技术避免了裸露导体和接触火花，成为电动汽车电能供给的优选方式之一。本文分析了电磁感应，无线电波，磁耦合共振三种无线能量传输方式，并比较了其供电的可行性，确定磁耦合共振无线传输技术作为本文研究的主要内容。首先设计了电动汽车无线充电系统的组成和充电结构，其次通过构建磁耦合共振的电路模型，分析了磁耦合共振的基本原理，最后利用MATLAB仿真研究了在理想状态下，耦合系数、系统共振频率、负载电阻对输出功率和最大效率的影响。研究结果对影响磁耦合共振系统传输功率和效率的因素提供了理论依据，从而为电动汽车无线供能的实现奠定研究基础。64218
毕业论文关键词 电动汽车 无线传输 磁耦合共振 传输效率
毕业设计说明书（论文）外文摘要
Title Electric vehicle wireless charging technology principles study
Abstract Green energy to make electric cars become the focus, the supply side and the receiver side non-contact energy transfer wireless transmission technology to avoid contact with bare conductors and sparks, electric cars become a preferred embodiment of power supply. This paper analyzes three wireless energy transmission,include the electromagnetic induction and radio waves, magnetic coupling resonance , then compare the feasibility of its power to determine the magnetic coupling resonance wireless transmission technology as the main content of this paper. First, we designed the wireless charging system for electric vehicle charging structure and composition, followed by building the resonant circuit model of the magnetic coupling, magnetic coupling of the basic principle of resonance, finally using MATLAB simulation in an ideal state, the coupling coefficient of resonance frequency ,load resistance on the output power and maximum efficiency. Findings that affect the magnetic coupling resonance system transmission power and efficiency factors provides a theoretical basis, so as to be able to supply electric vehicles to achieve wireless laid research base.
Keywords Electric cars Wireless transmission Magnetically coupled resonant Transmission efficiency
1 引言 1
1．1 课题研究的目的和意义 1
1．2 国内外研究现状 1
1.3无线电能传输的应用领域 6
1.4本文研究的主要内容 8
2 电动汽车无线充电技术分析 9
2．1电动汽车无线充电的发展 9
2.2电动汽车无线充电的组成 10
2.3磁耦合共振在电动汽车应用的要求分析 10
3 磁耦合共振的基本原理分析 13
3.1磁耦合共振的工作原理 13
3.2磁耦合共振电路模型分析 13
4磁耦合共振系统传输特性分析 16
4.1磁耦合共振系统的效率分析 16
4.1.1 Ls和Ld均不发生谐振 16
4.1.2 Ls发生自谐振 16
4.1.3 Ld发生自谐振