摘要：永磁同步电机因为实用性比较高以及组成也并不复杂等优势，在交流伺服电机中的地位越来越重要。另一方面，DTC是近年来广泛使用的控制策略。，这种控制非常简单，操作也非常方便，我们通过对于永磁同步电机的这种发展趋势，因此重点研究了直接转矩控制在永磁同步电机的使用，在这里对其分析，首先对于直接转矩进行了简单的介绍，同时对于永磁同步电机的基本结构以及如何分类进行分析，然后我们就采用了MATALB软件的当中的Simulink函数来对进行了分析，并建立了相应的系统模型，并对其进行了仿真，然后在对于仿真度结果进行全面分析，此时就可以证明永磁同步电机进行了控制，使得该类型的同步电机具有较高的可靠性和安全性，但是性能较差，而且转矩响应也较慢，这证实了永磁同步电机的转矩响应将成为市场前景广阔的一种电机。70613

毕业论文关键词：永磁同步电机；仿真

Matlab of Permanent magnet synchronous motor direct torque control system 

Abstract: Permanent magnet synchronous motor (PMSM) is becoming more and more important in AC servo motor because of its high reliability and simple structure. DTC, on the other hand, is a widely used control strategy in recent years. The utility model has the advantages of simple and clear control principle, simple and fast operation, good torque response, etc.. Based on this trend, this paper focuses on the application of DTC in pmsm. In order to analyze the direct torque control of permanent magnet synchronous motor, the basic principle and advantages and disadvantages of DTC are introduced, and the structure and classification of PMSM are introduced in detail. Then, by using the Simulink function in MATLAB, the model of PMSM DTC system is established, and the simulation results are analyzed and summarized. The results show that the DTC has good torque response, and can realize the fast and reliable control of PMSM at low speed. But the performance is poor and the torque response is not fast. This confirms that the torque response of permanent magnet synchronous motor will become the future development trend.

Keywords: PMSM , DTC , Simulation

目录

摘要 i

Abstract i

目录 iv

1 绪论 1

永磁同步电机简介 1

直接控制转矩 1

永磁同步电机DTC的发展现状 2

本论文主要设计内容 3

2 永磁同步电机的结构及特性 4

永磁同步电机的结构 4

2.4 永磁同步电机DTC的特性 5

2.4 本章小结 6

3永磁同步电动机数学模型 7

3.1常用坐标系 7

3.1.1三相abc静止坐标系下的数学模型 7

3.1.2αβ静止两相坐标系下的数学模型 8

3.1.3 dq静止两相坐标系下的数学模型 8

3.2坐标变换 10

3.2.1三相adc坐标系与αβ两相坐标系之间的变换 10

3.2.2三相abc坐标系与dq两相转子磁链同步旋转坐标系之间的变换