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Performance improvement of direct torque control for induction motor drive via fuzzy logic-feedback linearization: Simulation and experimental assessment

Abdelkarim Ammar (Signals and Systems Laboratory LSS, Institute of Electrical and Electronics Engineering, University of M’Hamed Bougara of Boumerdes, Boumerdes, Algeria and Electrical Engineering Laboratory of Biskra LGEB, University of Mohamed Khider of Biskra, Biskra, Algeria)

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering

ISSN: 0332-1649

Article publication date: 1 April 2019

Issue publication date: 20 May 2019

204

Abstract

Purpose

This paper aims to propose an improved direct torque control (DTC) for the induction motor’s performance enhancement using dual nonlinear techniques. The exact feedback linearization is implemented to create a linear decoupled control. Besides, the fuzzy logic control approach has been inserted to generate the auxiliary control input for the feedback linearization controller.

Design/methodology/approach

To improve the DTC for induction motor drive, this work suggests the incorporation of two nonlinear approaches. As the classical feedback linearization suffers while the presence of uncertainties and modeling inaccuracy, it is recommended to be associated to another robust control approach to compensate the uncertainties of the model and make a robust control versus the variations of the machine parameters. Therefore, fuzzy logic controllers will be integrated as auxiliary inputs to the feedback linearization control law.

Findings

The simulation and the experimental validation of the proposed control algorithm show that the association of dual techniques can effectively achieve high dynamic behavior and improve the robustness against parameters variation and external disturbances. Moreover, the space vector modulation is used to preserve a fixed switching frequency, reduce ripples and low switching losses.

Practical implications

The theoretical, simulation and experimental studies prove that the proposed control algorithm can be used on different AC machines for variable speed drive applications such as oil drilling, traction systems and wind energy conversion systems.

Originality/value

The proposed DTC strategy has been developed theoretically and realized through simulation and experimental implementation. Different operation conditions have been conducted to check the ability and robustness of the control strategy, such as steady state, speed reversal maneuver, low-speed operation and parameters variation test with load application.

Keywords

Citation

Ammar, A. (2019), "Performance improvement of direct torque control for induction motor drive via fuzzy logic-feedback linearization: Simulation and experimental assessment", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 38 No. 2, pp. 672-692. https://doi.org/10.1108/COMPEL-04-2018-0183

Publisher

:

Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited

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