直接转矩控制系统低速性能分析  

Analysis of Low Speed Performance on Direct Torque Control System

作　　者：蔡文皓[1] 刘庚[1] 崔江霞[1] 贺伟 

机构地区：[1]西安科技大学 [2]渤海钻探五公司70003钻井队

出　　处：《电力电子技术》2010年第2期60-61,共2页Power Electronics

摘　　要：根据异步电动机直接转矩控制基本原理,对直接转矩控制系统的低速性能进行分析,得出影响其性能的主要因素,并提出了解决方法,即近似圆形磁链控制方法。利用Matlab/Simulink搭建该方法的仿真模型,并对其结果进行分析。利用DSP数字处理器搭建实际测试电路,并进行了实验。实验结果证明了系统在低速范围内具有动、静态性能良好,脉动小,谐波分量少等优点。Based on the basic theory of direct torque control,low speed performance of direct torque control system is anal-ysed,the major facts influencing low speed performance are gained,to solve the problem.Approximate rotundity flux link-age control method is put forward.By using the Matlab/Simulink,the simulation models of approximate rotundity flux link-age control method are made,and the simulation results are analysed.Practical circuit is designed and the experiment is done by using DSP.The experimental results indicate that in low speed scope the system has excellent dynamic and static prerformances,little pulse and harmonic.

关 键 词：异步电机 直接转矩 圆形磁链 

分 类 号：TM343[电气工程—电机]