Stator-Current-Based MRAS Estimator for a Wide Range Speed-Sensorless Induction-Motor Drive
Stator-Current-Based MRAS Estimator for a Wide Range Speed-Sensorless Induction-Motor Drive
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DOI：
10.1109/tie.2009.2031134
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发表时间：
2010-04
影响因子：
7.7
通讯作者：
T. Orłowska-Kowalska;M. Dybkowski
中科院分区：
文献类型：
--
作者：
T. Orłowska-Kowalska;M. Dybkowski
本文采用一种新型模型参考自适应系统（MRAS）型转子转速估计器对矢量控制感应电机（IM）驱动器进行了分析。给出了这种新型MRAS估计器的稳定性分析方法。分析和测试了IM等效电路参数变化对估计器传递函数极点位置和整个驱动系统稳定性的影响。测试了自适应算法系数对mras估计方案的影响。确定了电机参数变化的允许范围，保证了采用该速度磁链估计器的无传感器磁场定向IM驱动器的稳定运行。利用电流型MRAS估计器对矢量控制系统的动态性能进行了实验测试。
This paper deals with an analysis of the vector-controlled induction-motor (IM) drive with a novel model reference adaptive system (MRAS)-type rotor speed estimator. A stability-analysis method of this novel MRAS estimator is shown. The influence of equivalent-circuit parameter changes of the IM on the pole placement of the estimator transfer function and the stability of the whole drive system are analyzed and tested. The influence of the adaptation-algorithm coefficients of the MRAS-estimator scheme is also tested. The allowable range of motor-parameter changes is determined, which guarantees the stable operation of the sensorless field-oriented IM drive with this speed and flux estimator. Dynamical performances of the vector-control system with the current-type MRAS estimator are tested in a laboratory setup.