文档介绍：学校代码: 11059
学号:0906013014
Hefei University
毕业设计(论文)
BACHELOR DISSERTATION
论文题目: 交流异步电机先进控制技术研究
学位类别: 工学学士
学科专业: 机械设计制造及其自动化
作者姓名: 张支亮
导师姓名: 夏小虎
完成时间: 2013年6月
交流异步电机先进控制技术研究
摘要
目前广泛研究应用的异步电机调速技术有恒压频比控制方式、矢量控制、直接转矩控制等。本论文中所讨论的是异步电机矢量控制调速法,相对于恒压频比控制和直接转矩控制,它有优秀的动态性能和低速性能,还有其调速范围宽的优点。
因为异步电动机的物理模型是一个高阶、非线性、强耦合的多变量系统,需要用一组非线性方程组来描述,所以控制起来极为不便。异步电机的物理模型之所以复杂,关键在于各个磁通间的耦合。如果把异步电动机模型解耦成由磁链和转速分别控制的简单模型,就可以模拟直流电动机的控制模型来控制交流电动机。
矢量控制就是一种优越的交流电机控制方式,它模拟直流电机的控制方式使得交流电机也能取得与直流电机相媲美的控制效果。本文研究了矢量控制系统中磁链调节器的设计方法。并用MATLAB最终得到了仿真结果。
关键词:异步电机;矢量控制;MATLAB仿真
Study on Advanced Control Technology of AC Asynchronous Motor
ABSTRACT
At present, the asynchronous motor velocity modulation, vector control and direct torque check etc. Are in detailed studies. This paper discusses the modulation method of asynchronous and wide velocity modulation scope.
Since asynchronous motor's physical model is a higher order, the misalignment, the close coupling many-variable system, needs to use a group of nonlinear simultaneous equation to describe, therefore controls extremely inconveniently. The reason that asynchronous machine's physical model plex, the key lies during each ic flux the coupling. If es the asynchronous motor model decoupling has the simple model which the flux linkage and the rotational speed control separately, may simulate direct current motor's control model to control the motor.
The direct vector control is one superior alternating current machine control mode, it simulates direct current machine's control mode to enable the alternating current machine also to obtain the control effect pares favorably with the direct current machine. This article has studied in the vector control system the flux linkage regulator's design method. And obtained the simulation result finally with MATLAB.
Keywords: Asynchronous Motor; The vector control; MATLAB simulation
目录
摘要 I
ABSTRACT II
目录 III
第一章异步电机调速的基本理论及矢量控制基本原理 1
三相异步电机的数学模型 1
磁链方程 2
电压方程 5