Adaptative variable structure control for an online tuning direct vector controlled induction motor drives.

Sbita Lasaad; Zaltni Dalila; Abdelkrim Mohamed Naceur

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Adaptative variable structure control for an online tuning direct vector controlled induction motor drives.

Author(s)

Sbita Lasaad Research Unit of Modeling, Analysis and Control Systems, Department of Electrical and Automatic Engineering, National Engineering School, Gabes, Tunisia

Zaltni Dalila Research Unit of Modeling, Analysis and Control Systems, Department of Electrical and Automatic Engineering, National Engineering School, Gabes, Tunisia

Abdelkrim Mohamed Naceur Research Unit of Modeling, Analysis and Control Systems, Department of Electrical and Automatic Engineering, National Engineering School, Gabes, Tunisia

Abstract

This study demonstrates that high performance speed control can be obtained by using an adaptative sliding mode control method for a direct vector controlled Squirrel Cage Induction Motor (SCIM). In this study a new method of designing a simple and effective adaptative sliding mode rotational speed control law is developed. The design includes an accurate sliding mode flux observation from the measured stator terminals and rotor speed. The performance of the Direct Field-Orientation Control (DFOC) is ensured by online tuning based on a Model Reference Adaptative System (MRAS) rotor time constant estimator. The control strategy is derived in the sense of Lyapunov stability theory so that the stable tracking performance can be guaranteed under the occurrence of system uncertainties and external disturbances. The proposed scheme is a solution for a robust and high performance induction motor servo drives. Simulation results are provided to validate the effectiveness and robustness of the developed methodology.

Publication Details

Page(s) 3177-3186

DOI DOI not available

Published Journal: Journal of Applied Sciences, Volume: 7, Issue: 21, Year: 2007

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