基于感应耦合电能传输方式的电动汽车充电装置研究

发布时间：2018-01-07 17:40

本文关键词：基于感应耦合电能传输方式的电动汽车充电装置研究　出处：《北京交通大学》2014年硕士论文　论文类型：学位论文

【摘要】：化石燃料的紧缺以及环境污染的加剧促进了电动汽车的发展,除了传统有线接插头充电方式外,近些年发展起来的电动汽车无线充电方式成为国内外科研机构的研究热点,具有很好的应用前景。本文首先介绍了感应耦合无线电能传输(ICPT)装置的基本结构和耦合器的等效模型,根据其结构特点以及针对电动汽车充电的要求,总结出感应耦合无线电能传输装置的设计要点,并根据设计要点探讨了一种实用的设计方法,研究了四种基本补偿拓扑下的系统设计参数。其次分析了四种基本补偿电路下耦合系数变化、负载变化对功率传输能力和谐振电容电压电流应力大小的影响,以及频率变化对功率传输能力和原边反映阻抗的影响。在此基础上,研究了一种新型的SPP补偿拓扑结构,并通过理论分析确定了补偿电容的取值方法。MATLAB仿真验证了该补偿拓扑结合了串联补偿和并联补偿的优点,既满足了功率传输能力的要求,又减小了谐振电容的电压电流应力。最后根据上文分析结果,设计了耦合器,测试了耦合器的原副边线圈在不同气隙下耦合系数的大小,最终搭建了3kW感应耦合无线电能传输装置实验样机,实验验证了理论分析的正确性和设计的合理性。该装置的系统效率在气隙为12cm时可达80%以上,气隙为20cm时效率为67%。
[Abstract]:The shortage of fossil fuels and the aggravation of environmental pollution have promoted the development of electric vehicles. In addition to the traditional way of wired plug charging, the development of electric vehicle charging mode in recent years has become a research hotspot at home and abroad, and has a good application prospect.
This paper first introduces the inductively coupled wireless power transmission (ICPT) equivalent model of the basic structure and the coupling device, according to its structural characteristics and requirements for electric vehicle charging, summed up the design points of inductively coupled radio transmission device, and according to the design of a practical design method is discussed, the system design parameters four basic compensation topology.
Followed by an analysis of the changes of coupling coefficients of four kinds of basic compensation circuit, the load change on the power transfer capability of the resonant capacitor voltage and current stress size, frequency and impedance changes reflect influence on power transmission capacity and the primary. On this basis, the research of SPP compensation topology structure of a new type, and through theory analysis of the calculating method of compensation capacitor.MATLAB simulations show that the compensation topology combines the advantages of series compensation and shunt compensation, not only to meet the requirements of power transmission capability, and reduce the voltage of the resonant capacitor current stress.
Finally, according to the above analysis results, the design of coupler, size of coils at different air gap coupling coefficient of the coupler, the test, finally built a 3kW inductively coupled wireless power transmission device experimental prototype, experimental results verify the correctness of theory analysis and design. The rationality of the system efficiency of the device in the air gap is 12cm when the air gap is more than 80%, 20cm efficiency is 67%.

【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM910.6;U469.72

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