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Mathematical Problems in Engineering
Volume 2014, Article ID 127128, 11 pages
http://dx.doi.org/10.1155/2014/127128
Research Article

Performance Analysis of DTC-SVM Sliding Mode Controllers-Based Parameters Estimator of Electric Motor Speed Drive

Control & Energy Management Laboratory (CEMLab), Sfax Engineering School, University of Sfax, BP 1173, 3038 Sfax, Tunisia

Received 10 June 2014; Revised 14 August 2014; Accepted 19 August 2014; Published 11 September 2014

Academic Editor: Rongni Yang

Copyright © 2014 Fatma Ben Salem and Nabil Derbel. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper is concerned with a framework which unifies direct torque control space vector modulation (DTC-SVM) and variable structure control (VSC). The result is a hybrid VSC-DTC-SVM controller design which eliminates several major limitations of the two individual controls and retains merits of both controllers. It has been shown that obtained control laws are very sensitive to variations of the stator resistance, the rotor resistance, and the mutual inductance. This paper discusses the performances of adaptive controllers of VSC-DTC-SVM monitored induction motor drive in a wide speed range and even in the presence of parameters uncertainties and mismatching disturbances. Better estimations of the stator resistance, the rotor resistance, and the mutual inductance yield improvements of induction motor performances using VSC-DTC-SVM, thereby facilitating torque ripple minimization. Simulation results verified the performances of the proposed approach.