摘要
分析一种感应电机直接转矩控制中转子磁链的观测方法,并对转子磁链及磁链转差进行数学建模分析,在此基础上估算出电机转速。通过仿真结果可以看出,这种方法能够提高低速观测精度,增强系统鲁棒性,受电机参数变化影响不大,算法简单直观,便于实现。
An observation on the rotor flux of the inducting machine direct torque control is introduced in this paper. Based on this, the mathematics models of the rotor flux and flux slip are analyzed to estimate the motor speed. It can be concluded throughout the simulation result that the observation accuracy with low speed can be improved in this way. The system robust characteristic can be enhanced by little influence of motor parameters changing. The control algorithm is simple to implement.
出处
《仪表技术》
2008年第2期6-8,共3页
Instrumentation Technology
关键词
电机速度辨识
直接转矩控制
磁链观测器
motor speed identification
direct torque control
flux observation
