摘要：由于永磁同步电机具备体积小、质量轻、能耗低、效率高、运行可靠性高等优点，已经被广泛应用于各种高性能驱动系统中。为了能够使永磁同步电动机实现高性能的控制，需要机械传感器来获取转子位置信息，采用空间矢量算法（SVPWM）来进行控制。但是这些机械传感器常常受到工作环境的限制。近些年来，关于永磁同步电机的控制算法也已经成为研究的热点，各个国家的学者把大量的精力投入其中。本文通过研究内埋式转子结构的永磁同步电机的无速度传感器控制算法，来摆脱电机在使用环境中的限制。

通过坐标变换理论让自然坐标轴下永磁同步电机的数学模型得到解耦，运用 控制方法和矢量控制技术，提升永磁同步电机的动态性能与抗扰动能力。分析创建旋转高频电压信号注入下的永磁同步电机模型，通过跟踪转子位置信息实现无速度传感器控制，最后使用MATLAB/Simulink仿真软件来搭建的仿真系统，验证设计的可行性。

关键词：永磁同步电机；矢量控制；旋转高频电压；转子位置估计；无速度传感器

Sensorless Control Simulation of Permanent Magnet Synchronous Motor Based on High Frequency Injection Method

Abstract: Permanent Magnet Synchronous Motor (PMSM) has been widely used in various high performance drive systems because of its advantages of small volume, light weight, low energy consumption, high efficiency and high reliability. In order to achieve high performance control of permanent magnet synchronous motor, a mechanical sensor is needed to obtain the information of the rotor position, and the space vector algorithm (SVPWM) is used to control the permanent magnet synchronous motor. But these mechanical sensors are often limited by the working environment. In recent years, the control algorithm of PMSM has also become a research hotspot. Scholars from various countries devote a lot of energy to it. In this paper, the speed sensorless control system of permanent magnet synchronous motor with embedded rotor structure is studied to get rid of the limitation of the motor in the use environment.

The mathematical model of the PMSM under the natural coordinate axis is decoupled by the coordinate transformation theory, and the  control method and vector control technique are used to improve the dynamic performance and anti disturbance ability of the PMSM. The PMSM model of the rotating high frequency voltage signal injection is created, and the speed sensor control is realized by tracking the rotor position information. Finally, the simulation system is built using the MATLAB/Simulink simulation software to verify the feasibility of the design.

Keywords: Permanent Magnet Synchronous Motor; Vector Control; Vector Control; Rotating High Frequency Voltage; Rotor Position Estimation; Sensorless

目录

第1章 绪论 1

1.1 论文的研究背景和意义 1

1.2 国内外的研究现状 2

1.3 本文主要研究内容 2

第2章 永磁同步电机的数学模型与仿真模型 3

2.1引言 3

2.2 永磁同步电机的结构与分类 3

2.3 永磁同步电机的坐标变换原理 4

2.3.1 Clark变换与仿真建模 5

2.3.2 Park变换与仿真建模 7

2.4 永磁同步电机的数学模型 8

2.4.1 永磁同步电机在两相旋转坐标系下的数学模型 8

2.4.2 永磁同步电机在两相静止坐标系下的数学模型 11

第3章 永磁同步电机的矢量控制 13

3.1引言 13

3.2 电压空间矢量的表示 13

3.3 空间矢量控制算法的合成原理 16

3.4 空间矢量控制算法的实现 18

3.4.1 电压空间矢量的扇区判断 18

3.4.2 非零矢量和零矢量作用时间的计算 18

3.4.3 扇区矢量切换点的确定 19

3.5 基于PI调节器的永磁同步电机的矢量控制 22

3.5.1 转速环PI调节器的参数整定 22