三相PWM整流器滞环电流控制仿真  

Simulation for Hysteresis Current Control of Three-phase PWM Rectifier

作　　者：梁骁[1] 王辉[1] 冯勇[1] 阮倩茹[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《计算机仿真》2010年第10期259-262,共4页Computer Simulation

摘　　要：三相PWM整流器已广泛应用工业与电气控制领域,电流控制技术决定着三相PWM整流器系统的控制性能。综合比较了各种电流控制方法,应用较多的滞环比较PWM电流控制技术基本原理进行分析,表明常规滞环电流控制开关频率变化的随机性。为了达到开关频率恒定,消除随机误,通过引入三角载波比较的方法解决常规滞环电流控制中的开关周期不固定的缺点,采用MATLAB/Simulin软件搭建系统模型,对方案进行仿真验证,结果表明,采用三角波的固定开关频率滞环电流方案能获得良好的控制效果。Three-phase PWM rectifier has been widely used in industrial and electrical control field,the control performance is determined by current control technology.This paper compares different kinds of current control methods,and analyzes the fundamental principles of hysteresis comparison PWM current control technology.Analysis results indicate that the switching frequency of the general hysteresis current control changes randomly.The problem of non-fixing switching period is solved by using triangular carrier wave.Then the system simulation model is built and simulated by the soft of MATLAB/Simulink,the results show that the method using triangular carrier can achieve a good effect.

关 键 词：整流器 滞环电流控制 三角载波 开关 

分 类 号：TM4[电气工程—电器]