毕业设计（论文）-开关磁阻电机转矩脉动抑制技术的研究.doc

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开关磁阻电机转矩脉动抑制技术的研究
Research on control technique of switch reluctance motor torque ripple
学院名称:江苏大学电气信息工程学院
专业班级:电子信息科学与技术0902
学生姓名: 袁九发
指导教师姓名: 秦云
指导教师职称: 副教授
2013年6月
开关磁阻电机转矩脉动抑制技术的研究
专业班级:电子信息科学与技术0902 学生姓名:袁九发
指导教师:秦云职称:副教授
摘要开关磁阻电机以其结构简单、坚固、性能可靠、效率高和成本低等优点,近年来受到广泛关注。但是其自身的结构,同时也由于它的非线性,造成了开关磁阻电机控制的复杂性,制约了其在一定领域中的应用。本文旨在抑制开关磁阻电机转矩脉动,针对这一问题,提出了不同的控制方法抑制它并做了比较。
首先分析了开关磁阻电机的工作原理,并介绍了电流斩波控制、角度位置控制、电压控制三种常见的控制方法优缺点。然后介绍了目前国内外抑制开关磁阻电机转矩脉动的方法,结合本文,重点介绍了转矩分配函数控制策略及直接转矩控制策略。
针对三相开关磁阻电机,本文对转矩分配函数的设计进行了研究。在 Matlab仿真平台下,对基于转矩分配函数法的开关磁阻调速电机驱动系统进行了仿真。
直接转矩控制的难点是如何选取三相开关磁阻电机的6个有效电压矢量。Matlab环境中,搭建了开关磁阻电机直接转矩控制的仿真模型,仿真结果显示定子磁链轨迹为圆形,电机转矩脉动比常规控制方法小。
最后,本文总结了一下文章的主要研究成果,并且对课题进行了展望,为后面的研究做了铺垫。
关键词开关磁阻电机直接转矩控制转矩分配函数 Matlab

Research on control technique of switch reluctance motor torque ripple
Abstract With lots of virtues:solid structure,high reliability and efficiency,low cost etc,Switched Reluctance Motor(SRM)has been receive a wide publicity, but every coin has two sides. Its control scheme is plex because of the highly nonlinear characteristic and unique its application is restricted in some field. Aimed to reduce torque ripple for SRM ,this thesis presents different control strategies.
First,the characteristic and operation principle of switched reluctance motor are analyzed in detail .And the advantages and disadvantages of traditional control methods,such as current chopping control,angle position control and voltage PWM control are introducted. Then,the current domestic and international methods of reducing the torque ripple are introduced. Connection with this paper, focuses on the analysis of torque share method and the Direct Torque Control.
For three-phase switched reluctance motor, the design of the torque distribution function is studied. Under the Matlab simulation platform, the drive system of Switched Reluctance Motor Based on torque share function simulation is carried out. The difficulty of direct torque cont