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http://dx.doi.org/10.5302/J.ICROS.2003.9.9.692

Sensorless Induction Motor Vector Control Using Stator Current-based MRAC  

박철우 (경북대학교 전자공학과)
최병태 (경북대학교 전자공학과)
권우현 (경북대학교 전자공학과)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.9, no.9, 2003 , pp. 692-699 More about this Journal
Abstract
A novel rotor speed estimation method using Model Reference Adaptive Control(MRAC) is proposed to improve the performance of a sensorless vector controller. In the proposed mettled, the stator current is used as the model variable for estimating the speed. In conventional MRAC methods, the relation between the two model errors and the speed estmation error is unclear. Yet, in the proposed method, the stator current error is represented as a function of the first degree for the error value in the speed estimation. Therefore, the proposed method can produce a fast speed estimation and is robust to the parameters error In addition, the proposed method of offers a considerable improvement in the performance of a sensorless vector controller at a low speed. The superiority of the proposed method is verified by simulation and experiment in a low speed region and at a zero-speed.
Keywords
seed estimation; sensorless control; vector control; induction motor; MRAC;
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