基于DSVM的直接转矩控制系统转矩脉动减小研究  

Research on Torque Ripple Reduction of Direct Torque Control System Based on DSVM

作　　者：史光辉[1] 刘文胜[1] 卜文绍[1] 张亮[1] 

机构地区：[1]河南科技大学,河南洛阳471003

出　　处：《微特电机》2009年第10期53-55,68,共4页Small & Special Electrical Machines

基　　金：河南省科技攻关项目(082102240086);河南科技大学科研基金项目(2003ZY27)

摘　　要：传统的异步电动机直接转矩控制(DTC)受电压源逆变器(VSI)电压矢量数量限制,不能合理地制定开关表,造成了转矩脉动过大。采用离散空间矢量调制(DSVM)方法对其进行改进,增加了可选择的电压矢量,使电压矢量在幅值和相位上较为连续,并且根据转速不同分别制定了开关表,避免了较大转矩脉动出现。仿真结果证明转矩脉动、电流脉动明显减小。Due to the limited number of the voltage vectors, direct torque control （DTC） can ＇ t establish the reasonable switching table, so the torque ripple is large. The problems of DTC was ouercome using discrete space vector modulation （DSVM） , in which, the number of voltage vectors was increased, the value and phase of voltage vectors were more continu- ous according to the different speeds, and different switching tables were established, thus the large torque ripple was avoi- ded. The simulation results prove that torque ripple and current ripple are reduced significantly.

关 键 词：直接转矩控制 离散空间矢量调制 转矩脉动 

分 类 号：TM343[电气工程—电机]