目录摘要......................................................................IABSTRACT...............................................................II第 1 章 绪论...............................................................11.1 电机调速技术的进展概况...............................................11.2 直接转矩控制技术的进展现状...........................................21.2.1 直接转矩控制的现状及进展趋势.....................................21.2.2 目前的热点讨论问题及解决方法.....................................21.3 本文所做的工作.......................................................3第 2 章 直接转矩控制理论...................................................42.1 概述.................................................................42.2 直接转矩控制的基本原理...............................................42.2.1 异步电机动态数学模型.............................................42.3 逆变器的输出电压状态及电压空间矢量...................................62.3.1 逆变器输出电压状态...............................................62.3.2 电压空间矢量.....................................................72.4 电压空间矢量对电动机定子磁链和转矩的影响.............................82.4.1 异步电机的磁链观测模型...........................................82.4.2 电压空间矢量对定子磁链影响.......................................92.4.3 电压空间矢量对转矩的影响........................................102.5 直接转矩控制系统的基本组成..........................................112.5.1 磁链滞环调节器..................................................122.5.2 转矩滞环调节器..................................................122.5.3 开关信号选择单元................................................132.6 低速范围内的解决方案................................................13第 3 章 异步电机直接转矩控制系统的建模与仿真..............................163.1 仿真软件 MATLAB 简介................................................163.1.1MATLAB 语言.......................................
