一种改进的异步电机DTC_SVM控制系统研究  

An Improved DTC-SVM Method for Asynchronous Motor Control

作　　者：罗小丽[1] 范桂林[1] 

机构地区：[1]湖北工程学院物理与电子信息工程学院,湖北孝感432100

出　　处：《船电技术》2013年第4期44-46,共3页Marine Electric & Electronic Engineering

摘　　要：考虑到传统DTC系统在低速时存在的磁链波形畸变和转矩脉动问题,研究了一种改进的DTC_SVM控制策略,将传统的非零空间电压矢量进一步细分,并推导了任意空间电压矢量合成方法,给出了基于矢量细分的DTC_SVM控制系统模型。仿真结果表明,该系统能提高转矩和磁链控制精度,同时有效降低转矩低速脉动,提高系统低速运行稳定性。According to flux waveform distortion and torque ripple problems existing in the traditional method of asynchronous motor direct torque control system, this paper proposes an improved DTC_SVM control strategy o f further subdivision with Nonzero voltage space vector, and derives the synthesis method of arbitrary space voltage vector. The DTC SVM system model is built with vector subdivision. Simulation results show that the torque and flux linkage control precision are significant improvement, the torque ripple is reduced and the stability at low speed is improved.

关 键 词：矢量细分 SVM异步电机 直接转矩控制 

分 类 号：TM343[电气工程—电机]