基于模型参考自适应律的无速度传感器交流异步电动机矢量控制仿真  

Research of Speed Sensorless Vector Control of Induction Motor Based on Model Reference Adaptive System

作　　者：杨新华[1] 马建立[1] 王关平[1] 

机构地区：[1]兰州理工大学电气工程与信息工程学院,甘肃兰州730050

出　　处：《电机与控制应用》2007年第8期22-26,共5页Electric machines & control application

基　　金：甘肃省自然科学基金(3ZS042-B25-001)

摘　　要：针对异步电动机矢量控制中对定子电阻和转子时间常数等参数的依赖性,设计了一种基于模型参考自适应律(MRAS)的参数辨识器。该辨识器同时还可以观测定子磁链及转子速度,并以此为基础,利用MATLAB/Simulink构建了以定子磁场定向的无速度传感器矢量控制系统。仿真结果表明:该方法实时辨识电机参数的变化,提高了控制系统的准确性和鲁棒性。For the dependence on the stator resistance and rotor time constant in the vector control of induction motor, a parameter estimator based MRAS was designed. The estimator also can observe the stator flux and speed. According to these parameters, a speed sensorless stator flux orientation vector control system was constructed. Results of simulation showed that this method can really identify these varying parameters and improve accuracy as well as robustness of control system.

关 键 词：模型参考自适应律 参数辨识器 无速度传感器矢量控制 定子磁链定向 

分 类 号：TP273.2[自动化与计算机技术—检测技术与自动化装置]