基于SPWM和DTC的异步电动机调速方案  

Speed Regulation Scheme on Asynchronous Motorbased on SPWM and DTC

作　　者：李刚[1] 张延华[2] 

机构地区：[1]中国沈阳国际经济技术合作公司,辽宁沈阳110013 [2]沈阳化工大学信息工程学院,辽宁沈阳110004

出　　处：《装备制造技术》2011年第3期35-38,共4页Equipment Manufacturing Technology

摘　　要：通过研究SPWM和DTC(Direct Torque Control,直接转矩控制)调速的原理,分析在不同的速度运行范围内两种调速方法的谐波表现,并经过仿真验证,提出一种将SPWM和DTC相结合的分段调速方案,在发挥两种调速方法各自优势的同时,兼顾到在各速度段产生尽量少的谐波成分。Both SPWM and DTC are schemes of speed regulation used frequently.Even through they have many advantages respectively,the issue about big component of harmonic waves exists.By means of studying speed regulation principle of SPWM and DTC,analyzing harmonic waves of two methods in the case of different operating speed range,verifying them by simulation,scheme of sectional speed regulation combining SPWM with DTC is put forward.This method take full advantage of two kinds of speed regulation methods,in the meaning,component of harmonic waves will be decreased in every speed regulation range.

关 键 词：谐波 零电压矢量 SPWM 直接转矩控制 脉冲开关模式 

分 类 号：TM343[电气工程—电机]