硕士学位论文-电动汽车用永磁同步电机控制系统设计精选.doc

硕士学位论文 作者姓名 指导教师 学科专业 控制工程 二0一五 年 六 月 摘 要 本文在开始先介绍了研究电动汽车的背景及其意义，并介绍了电动汽车在国内外的发展现状，然后从电动汽车的燃油经济性，驱动性，安全性及舒适度，三个方面分析了电动汽车比其他燃料汽车存在的优越性。电动机是电动汽车的核心部件，本文中从其驱动方式把电动机分为四大类，直流有刷电动机，永磁同步电动机，永磁无刷直流电动机和开关磁阻电动机。本章从工作原理与性能方面分析了，这四种电动机各存在的优点和不足。从中得出永磁同步电动机是电动汽车比较理想的选择。本文刚开始介绍了永磁同步电动机PMSM的三种不同的控制方式，恒压频比控制，矢量控制，直接转矩控制，并从三者之间比较得出，PMSM采用直接转矩控制DTC的方式有着比其他两者更好的稳定性。 随后从永磁同步电动机PMSM的结构及其特点，分析了其优越性，并建立数学模型，根据空间坐标关系各坐标系下SVPWM Abstract In this paper, we first introduce the background and significance of the research of electric vehicles, and introduces its present situation of development at home and abroad, and from the fuel economy and driving, safety and comfort, three aspects analysis the advantages of electric vehicles than other fuel vehicles exist. As the motor of the core components of electric vehicles, from the drive motor is divided into four categories, DC brushless motor, permanent magnet synchronous motor, permanent magnet brushless DC motor and switched reluctance motor. This chapter analyzes the advantages and disadvantages of these four motor in the aspects of the working principle and performance.. It is concluded that the permanent magnet synchronous motor PMSM as the core component of electric vehicle, is the ideal choice of the motor vehicle.. In this chapter, three different control modes, constant frequency ratio control, vector control and direct torque control of PMSM are introduced.. And the comparison between the three, the direct torque control DTC has better than the other two. Then, the structure and characteristics of PMSM are analyzed, and the advantages of PMSM PMSM are analyzed, and its mathematical model is established.. According to the space vector coordinate, the mathematical model of PMSM is deduced and the principle of DTC is analyzed.. In this chapter, the stator flux linkage and the magnetic torque estimation and the hysteresis control are analyzed, and the research methods of the switching table control are studied by the principle.. T