电气工程及其自动化毕业论文范文.doc

四川理工学院毕业设计(论文) 电动汽车驱动控制系统设计学生:李春晓学号: 07021040309 专业:电气工程及其自动化班级: 2007 级3班指导教师:李莺四川理工学院自动化与电子信息学院二O 一一年六月李春晓:电动汽车驱动控制系统设计 I 摘要驱动系统是电动汽车的心脏,也是电动汽车研制的关键技术之一,它直接决定电动汽车的性能,本文根据异步电动机矢量控制理论,结合电动汽车的实际要求,研究设计基于无速度传感器矢量控制的电动汽车驱动系统。矢量控制通过坐标变换将定子电流矢量分解为转子磁场定向的两个直流分量并分别加以控制, 从而实现异步电动机磁通和转矩的解耦控制,已达到直流电动机的控制效果。最后,在 Matlab 环境中建立了仿真系统,验证了无速度传感器矢量控制系统原理应用于电动汽车驱动系统的可行性。关键词: 电动汽车;驱动系统;异步电动机;无速度传感器矢量控制四川理工学院本科毕业(设计)论文 II ABSTRACT Driving system is the heart of EV and one of the key parts of the vehicle that determines the performance of the EV directly. According to the control technique 、 the method of induction motor drive system and based on the factual requirement of EV, the speed sensorless vector control was designed in this article. By transforming coordinate, the stator current is posing two DC parts which orientated as the rotator ic field and controlled respectively, So ic flux and torque are decoupled. It controls the asynchronous motor asa synchronous way. Finally, intimation system is established in the environment of Matlab to validate these control arithmetic. The system proved its enormous practical value of application. K ey words: EV; Drive system; Induction motor; speed sensorless vector control 李春晓:电动汽车驱动控制系统设计目录摘要............................................................................................................................ I ABSTRACT ...................................................................................................................... II 第1章绪论.................................................................................................................. 1 引言............................................................................................................... 1 燃料汽车和电动汽车的对比......................................................................... 1 电动汽车的发展现况..................................................................................... 3 国外电动汽车的发展...........................................................