| 异步电动机低速时无速度传感器控制的一种新方案 |
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| 引用本文： | 杨兴武,李瑞平.异步电动机低速时无速度传感器控制的一种新方案[J].电气传动,2007,37(5):9-12. |
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| 作者姓名： | 杨兴武 李瑞平 |
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| 作者单位： | 贵州大学;贵州大学 |
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| 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.
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| 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 |
| 修稿时间： | 2006-04-132006-12-11 |
Novel Scheme of Speed Sensorless Induction Motor Control in Low Speed Range |
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| Yang Xingwu,Li Ruiping.Novel Scheme of Speed Sensorless Induction Motor Control in Low Speed Range[J].Electric Drive,2007,37(5):9-12. |
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| Authors: | Yang Xingwu Li Ruiping |
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| Abstract: | 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. |
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| Keywords: | induction motor stator resistance estimation direct field orientation Kalman filters model reference self-adaptive |
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