WSEAS Transactions on Systems and Control


Print ISSN: 1991-8763
E-ISSN: 2224-2856

Volume 13, 2018

Notice: As of 2014 and for the forthcoming years, the publication frequency/periodicity of WSEAS Journals is adapted to the 'continuously updated' model. What this means is that instead of being separated into issues, new papers will be added on a continuous basis, allowing a more regular flow and shorter publication times. The papers will appear in reverse order, therefore the most recent one will be on top.


Volume 13, 2018



Sensorless DTC of an Induction Motor Based on Intelligent Dual Observer and ANN Based Selector Table

AUTHORS: Chaymae Fahassa, Mohamed Akherraz, Abderrahim Bennassar

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ABSTRACT: Several industrial applications require control techniques combining simplicity, robustness, and a good performance. In order to achieve this combination, the following infrastructure is proposed; a dual observer is used for our sensorless direct torque control (DTC) of a three-phase squirrel cage induction motor drive (SCIM), combining the adaptive luenberger observer (ALO) based on an intelligent hybrid technique for adaptation mechanism, and the extended Kalman filter (EKF), the first observer estimates the rotor speed while the second estimates the flux components; a proportional integral (PI) anti-windup controller which replaces the conventional speed PI controller; along with an intelligent approach namely artificial neural networks (ANN) based selector table in order to substitute the conventional one. The proposed structure, on one hand optimizes and reduces the torque, stator flux and stator current ripples, and on the other, provides an improved speed response characterized by a fast dynamic response, small overshoot, as well as resistance to disturbances. Simulation results prove the effectiveness and robust performance of the proposed sensorless intelligent strategy in both low and high speeds, direct and reverse directions, with and without applying a load disturbance.

KEYWORDS: - Artificial Neural Networks, Fuzzy Logic, Extended Kalman Filter, Adaptive Luenberger Observer, PI Anti-Windup, Sensorless Direct Torque Control, Induction Motor

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WSEAS Transactions on Systems and Control, ISSN / E-ISSN: 1991-8763 / 2224-2856, Volume 13, 2018, Art. #42, pp. 390-400


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