交流调速系统的Matlab仿真研究

Abstract AC motors are now widely used in our daily life. And our requirements for their performance is becoming higher and higher. Of their capabilities, the speed control performance is particularly important, which plays a major role in raising efficiency and saving energy. This paper will focus on the study of theories concerning different ways of speed regulation used in AC motors. In this paper, we use the software of MATLAB to do the simulation of alternating current governor system, helping us to come to a better understanding and knowledge of it. First, the  paper introduces several mainstream speed governing methods and briefly analyze their own advantages and disadvantages. Then it makes a analytic investigation of theory of variable voltage speed control system and variable frequency speed control system, based on which we build a simulation model of them and do the simulation in the MATLAB software. The simulation includes  Single closed-loop ac motor speed regulating system and SPWM inner wave speed regulation system and SPWM wave speed control system in variable frequency speed control system. I have a better understanding of alternating current governor system by doing the simulation by myself. The research is done by the simulation software, so the physical truth is not as ideal as it. We still have to pay attention to the fact and integrate theory with practice.  源-自*六'维:论.文]网[www.lwfree.cn
Key word: Speed-system, SPWM, Asynchronous machine

ABSTRACT    II
1  引言  .  1
1.1  课题的目的及意义  .  1
1.2  国内外研究状况和进展    2
1.3  本文研究的主要内容 .  5
2  MATLAB 简介与交流调压调速系统的仿真研究    6
2.1  MATLAB及交流调速系统常用模块简介  .  6
2.2  异步电动机变压时的机械特性    9
2.3  异步电动机的调压调速电路  .  11
2.4  闭环控制的异步电动机调压调速系统及其特性 .  12
2.4.1   具有速度负反馈的调压调速系统及其静特性    12
2.4.2   闭环调压调速系统的动态结构图 .  13
2.5 交流调压调速系统的仿真    15
2.6  本章小结  .  18
3  交流异步电动机交压变频调速系统    18
3.1  变压变频调速的基本控制方式    19
3.2  异步电动机变频控制时的机械特性  .  20 交流调速系统的Matlab仿真研究:http://www.lwfree.cn/zidonghua/20190804/36943.html
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