异步电动机直接转矩控制的低速性能改善  

Study of Asynchronous Motor Direct-Torque Control with Improved Low-Speed Performance

作　　者：孙艳霞[1] 雷丹[1] 

机构地区：[1]大连交通大学电气信息学院,辽宁大连116028

出　　处：《大连交通大学学报》2008年第1期55-58,共4页Journal of Dalian Jiaotong University

基　　金：辽宁省科技基金资助项目(20031062)

摘　　要：针对传统的六边形磁链直接转矩控制方法在低速段存在磁链脉动大因而转矩脉动大的缺点,提出了一种改善低速性能的方法.一方面采用定子磁链的全阶模型,另一方面采用三点式磁链调节器,从而使电机磁链在全速范围内近似圆形,在很大程度上改善了电机低速时的动态和静态性能.An improved method of low-speed performance is presented for traditional 6-sided polygon flux direct-torque control system for asynchronous motor to overcome the shortcoming, which has flux ripple and torque ripple at low speed. By using both the stator full-rank model and three-point flux regulator, a flux approximate cirle is reached in full speed range, and steady state and static state operating characteristics of asynchronous motor in low speed range are improved greatly.

关 键 词：直接转矩控制 转矩脉动 低速性能 

分 类 号：TM343[电气工程—电机]