摘要永磁同步电机凭借其诸多独特的优势，越来越多地被应用于高新技术领域。电机的控制系统也在不断优化，目前矢量控制技术在永磁同步电机控制系统中被广泛应用，它 能像控制直流电机一样来控制永磁同步电机。75304

本文以永磁同步电机为研究载体,着重分析它在三相静止坐标系和两相旋转坐标系下 的数学模型，给出在两种坐标系下物理量坐标变换的关系。

矢量控制系统大致分为坐标变换、电压空间矢量脉宽调制（SVPWM）、逆变电路和 PI 调节器。本课题分别对以上模块进行理论学习，并在 MATLAB/SIMULINK 仿真环境 下对基于 SVPWM 的矢量控制系统建模，分析电机在此控制方式下定子电流、转速和电 磁转矩的输出特性。仿真结果表明矢量控制方式较为理想，系统调速性能优良，转矩脉 动也较小。

毕业论文关键词 永磁同步电机  数学模型  坐标变换   矢量控制  SVPWM  仿真

毕 业 设 计 说 明 书 外 文 摘 要

Title Principle and Simulation of PMSM Vector Control       

Abstract The permanent magnet synchronous motor（PMSM）,with its many unique advantages, are increasingly used in high-tech fields。 Motor control system is also optimized constantly, at present, the vector control technology is commonly used in the control system of PMSM。 This technology can control PMSM, which is similar to control DC motors。 

This paper selects PMSM and the vector control technology as the research objects, it focuses on PMSM’s mathematical model both in the static three-phase coordinates and the rotary two-phase coordinates, the relationship between two coordinate systems is also given。 

This vector control system is broadly pided into the coordinate transformation, voltage space vector pulse width modulation (SVPWM), the inverter circuit and the PI regulator。 The theories of this modules are included in this project, a vector control system which is based on SVPWM is modeled in MATLAB / SIMULINK simulation environment, so that we can analysis the output characteristics of the stator current, rotating speed and electromagnetic torque。 The simulation results show that the vector control technology is desirable, the system has an excellent speed performance and a small torque ripple。 

Keywords PMSM  Mathematical Model  Coordinate Transformation   Vector Control SVPWM  Simulation 

本科毕业设计说明书 第 I 页

目 次

1 绪论 1

1。1   本课题研究的背景及其发展现状 1

1。2   本课题要完成的主要工作 2

2 永磁同步电机 4

2。1   交流永磁电机的分类及永磁同步电机的基本结构 4

2。2   永磁同步电机的工作原理简介 5

2。3   永磁同步电机的数学模型 5

2。3。1 永磁同步电机在定子三相静止 ABC 坐标系下的数学模型 5

2。3。2 坐标变换 6

2。3。3 永磁同步电机在转子两相旋转 d-q 坐标系下的数学模型