基于新型磁链观测模型的矢量控制系统研究  

Study of Vector Control System Based on Novel Flux Observer

作　　者：许琤[1] 王辉[1] 谭健[1] 刘敏[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《电气传动》2008年第5期11-14,共4页Electric Drive

摘　　要：在异步电动机数学模型的基础上,介绍了一种改进的定子磁链观测方法,并在此基础上设计了转速估算器。磁链观测器和速度估算器结合起来应用于无速度传感器的矢量控制系统。通过Matlab仿真试验,得到转速、转矩、定子电流及其磁链等的仿真波形。仿真结果验证了该控制方法具有较好的动态响应和较强的鲁棒性。A modified voltage model flux observer which is based on the mathematic module of induction motor was presented ,and a new speed estimator was proposed based on flux observer method. Then combined with the flux observer and speed observer , a speed sensorless vector control system for induction was presen- ted. Through the experiment emulated by the Matlab,the waveform of rotor speed, electromagnetic torque and stator flux were given. The simulation results comfirm this control method have higher dynamic response and comparatively strong robust.

关 键 词：矢量控制 磁链观测器 速度估算 

分 类 号：TM343[电气工程—电机]