摘要
介绍了一种新的简单的用于高性能异步电动机控制的定子电阻估算方法。利用旋转坐标沿定子电流矢量方向定向,可使定子电阻直接从异步电动机的数学模型中获得。通过电机在低速范围的运行,用无速度传感器直接磁场定向控制系统来检测提出的方法。控制系统用了两个观测器:一个是用于估计转子磁链的卡尔曼滤波观测器,另一个是用于辨识速度的模型参考自适应观测器。仿真结果表明了该方法的有效性。
A novel simple stator resistance estimation technique for high-performance induction motor drives was proposed. It makes use of a revolving reference frame aligned with the stator current vector, so that stator resistance can be straightforwardly derived from the mathematical model of the induction motor, A speed sensorless direct field orientation scheme is employed to validate the proposed solution, with the drive operating in the area of low speed. Two observers are used： a Kalman filter observer to estimate the rotor flux, and a MRAS observer for speed estimation. The simulation results illustrate the validity of the new scheme.
出处
《电气传动》
北大核心
2007年第5期9-12,共4页
Electric Drive
关键词
异步电动机
定子电阻估算
直接磁场定向
卡尔曼滤波器
模型参考自适应
induction motor stator resistance estimation direct field orientation Kalman filters model reference self-adaptive
