MATLAB窄轨矿用牵引电机车控制系统的仿真研究
关键词： 矢量控制；矿用电机车；仿真
Simulation and Study on Control System of Narrow-rail Mine Electrical Locomotive
Abstract : With the development of power electronic technology and automatic control technology, AC motor speed control system is to high performance-based .Vector control was employed as the speed adjusting control strategy for mine electric locomotive based on the analysis of AC/DC speed adjusting methods. Adeep theoretical study was made on the vector variable-frequency speed adjusting control system and a corresponding simulation model for mine electric locomotive was established by Simulink dynamic simulation tool in MATLAB .The simulation results show this system has a accurate control performance and high application performance . Narrates the topic background, speed the development of power electronic devices are required, the selection of control method and the main content of this design. From dynamic model, the analysis of asynchronous motor torque and flux linkage control law, the high performance induction motor speed control system scheme . Briefly introduces MATLAB, analysis and the principle of SVPWM module. Step motor according to the rotor flux oriented vector control system of the analysis.
Keywords: Vector control；Mine electric locomotive；Simulation
目 录
1 绪论 1
1.1 课题背景 1
1.2 交流调速系统的发展 1
1.2.1 电力电子器件 2
1.2.2 控制方法的发展 4
1.3 设计的主要内容 5
2 异步电动机的动态模型 6
2.1 异步电动机的三相数学模型 6
2.1.1 异步电动机三相动态模型的数学表达式 7
2.2 坐标变换 10
2.2.1 三相-两相变换（3/2变换） 10
2.2.2 静止两相-旋转正交变换（2s/2r变换） 12
2.3 异步电动机在正交坐标系上的动态数学模型 13
2.3.1 静止两相正交坐标系中的动态数学模型 13
2.4 异步电动机在正交坐标系上的状态方程 16
2.4.1 以 为状态变量的状态方程 16
2.5 异步电动机按转子磁链定向的矢量控制系统 17
2.5.1 按转子磁链定向的同步旋转正交坐标系状态方程 17
2.5.2 按转子磁链定向矢量控制系统的电流闭环控制方式 18
3 MATLAB仿真 20
3.1 MATLAB简介 20
3.2 模块设计 21
3.2.1 3/2变换 21
3.2.2 旋转变换 22
3.3 电压空间矢量PWM（SVPWM）控制技术 23
3.3.1 SPVWM的实现方法 23
4 系统仿真 31