【作者】 周峰；

【导师】 刘闯；

【作者基本信息】 南京航空航天大学 ， 电机与电器， 2010， 硕士

【摘要】 开关磁阻电机是一种区别于传统交流电机,具有双凸极结构的新型电机。其工作原理简单,却具有结构坚固、功率密度高、高效率低成本等一系列优点,具有较大的研究应用价值。在现实应用中,考虑到电动自行车驱动系统具有控制灵活、高效低损耗、续航里程大、运行可靠、维护简单等一系列要求,所以探索适合于电动车低压大电流工作状态下开关磁阻电机驱动系统的应用前景具有重要意义。本文主要致力在低压大电流工作状态下一种基于新型变换器的电动自行车用开关磁阻电机(Switched Reluctance Motor,简称SRM)系统的可行性研究,目标是为该系统设计的可行性提供较为完整的理论基础。考虑电动车用SRM的运行特点,本文应用基于电磁、铁损的电磁设计流程,采用有限元分析法,在JMAG-Studio软件中建立了12/8 SRM电机的2D有限元模型,仿真获得了该电机的磁场分布及一系列静态、动态特性,优化并研制了该驱动系统的实验样机。针对该电机结构,分析了不对称半桥电路、中间电容式电路、裂相式电路等典型SRM功率变换器主电路的优缺点,设计了系统仿真模型,应用磁参法在MATLAB/SUMLINK非线性模型平台中对各种SRM的功率变换器主电路拓扑进行仿真分析,最终确定采用C-dump电路进行实验设计,在低压大电流工作状态时,优化该电路工作参数,能够实现电动车驱动系统高效可靠运行。建立了C-dump变换器SRM研究与实验平台,与传统不对称半桥结构的驱动系统进行了实验对比。基于DSC芯片dspPIC30F3011开发了针对新型变换器的电动自行车驱动系统的软硬件,实现了电动自行车的多项功能,如巡航定速、刹车断电、过欠压保护、过温保护,验证了仿真参数优化的效果,达到了预期的目标。更多还原

【Abstract】 Switched reluctance motor (SRM) is a late-model motor whose working principle is different from traditional AC electrical machines and that has a double salient construction.Although the motor has a simple working principle,we can benefit a lot from its sturdy construction, high power desity and high quality.In view of requirement of variable control methods,high quality,long mileage, high reliability and simple maintenance that E-bike claimed,the research on the SRM that equipped on the E-bike is of a great importance.This paper focuses on basic research for proper application of Bicycle SRM systems, in order to lay out the foundation for the Bicycle SRM system design and engineering application. In condition of equipped on the bicycles, a multi-parameter integrated design method for designing srm has been brung forward in this paper, on the basis of regular electromagnetic design process and the finite element calculation of multi-physics field. The method comprises of electromagnetic design, loss calculation and so on. According to the special SRM path and using finite element method (FEM), the 2D model was set up in JAMG-studio. The magnetic field distribution and static/dynamic characteristics were obtained. The advantages and disadvantages of varies typical main circuit of SRM power converters, such as the asymmetrical half-bridge, split-phase main circuit are analyzed. A nonlinear Magnetization Data method was employed to develop the SRM drive system on the matlab platform. Finally C-dump converter was adopted to build the experimental platform. The experimental results were analyzed compared to the asymmetrical half-bridge system.Last, the essay builds a platform of the electric bicycle drive system using DSC chip dspPIC30F3011, achieve the electric bicycle’s many functions such as cruising speed, broken-electricity brake and the protection for over voltage, under voltage, over temperature of power module, and carry out the experiment to verifying the simulated parameter optimization effect. And the sample system achieves the expected object.更多还原