摘要
针对采用传感器检测异步电机的速度存在的增加成本、降低电机系统的机械强度和鲁棒性等问题,该文采用基于模型参考自适应控制系统(MRAS)的无速度传感器方法来估计异步电机的转速。将定子电压矢量方程作为参考模型,将转子电压矢量方程作为可调模型,利用测得的端电压和电流来估计电机转速。利用Simulink搭建了基于MRAS的异步电机转速估计及矢量控制系统。仿真实验结果表明,该方法能够实时地估计电机的转速,基于MRAS转速估计方法构造的异步电机矢量控制系统,具有良好的动、静态性能,取得了较好的控制效果。
A method to estimate induction motor speed based on model reference adaptive control system(MRAS)is discussed in this paper in order to solve the problem of increasing cost and reducing mechanical strength and robustness of the motor system using speed sensors.In MRAS model,stator voltage equation is used as reference model,rotor voltage equation is used as adjustable model,induction motor speed is estimated using stator voltage and current.In the Simulink,the system of induction motor speed estimation and vector control based on model reference adaptive control system is established and the simulation experiment is carried out.Simulation result shows that the method exhibiting good static and dynamic performance can estimate induction speed in real-time.
作者
于宗艳
韩连涛
王丽
YU Zong-yan;HAN Lian-tao;WANG Li(School of Electrical and Control Engineering,Heilongjiang University of Science and Technology,Harbin 150022,China;Hadian National Engineering Research Center-Power Equipment Co.,Ltd.,Harbin 150040,China)
出处
《自动化与仪表》
2022年第6期79-83,共5页
Automation & Instrumentation
关键词
模型参考自适应系统
矢量控制
电机转速估计
动态性能
model reference adaptive control system(MRAS)
vector control
motor speed estimation
dynamic performance
