Robust Sliding Mode H∞ Controller of DFIG Based on Variable Speed Wind Energy Conversion System

  • Lakhdar Saihi Department of Electrical and Computer Engineering, University of Tahri Mohammed Bechar, P. O. B. 417, 08000 Bechar, Algeria; Unité de Recherche en Energies Renouvelables en Milieu Saharien URERMS, Centre de Développement des Energies Renouvelables CDER, P. O. B. 478, 01000 Adrar, Alegria
  • Brahim Berbaoui Unité de Recherche en Energies Renouvelables en Milieu Saharien URERMS, Centre de Développement des Energies Renouvelables CDER, P. O. B. 478, 01000 Adrar, Alegria
  • Hachemi Glaoui Department of Electrical and Computer Engineering, University of Tahri Mohammed Bechar, P. O. B. 417, 08000 Bechar, Algeria
  • Larbi Djilali The Telecommunications, Signals and Systems Laboratory, University Amar Telidji, Route de Ghardaia, P. O. B. G37, 3000 Laghouat, Algeria
  • Slimani Abdeldjalil Unité de Recherche en Energies Renouvelables en Milieu Saharien URERMS, Centre de Développement des Energies Renouvelables CDER, P. O. B. 478, 01000 Adrar, Alegria

Abstract

In this study, a Sliding Mode (SM) methodology combined with a robust H∞ control scheme (SM-H∞) was proposed to control the stator active and reactive power generated by the Doubly Fed Induction Generator (DFIG). The purpose of the proposed controller is to improve the DFIG stator active and reactive power tracking performances by reducing chattering phenomena under variable wind speed, which provides major drawbacks of conventional SM controllers. The H∞ technique was used to define the SM attractive control part, which helps to reduce chattering phenomena and improves robustness in the presence of parameter variations and wind speed changing. The DFIG stator was directly connected to the grid and, its rotor was linked to the grid through a back-to-back converter. The proposed approach was tested using Matlab/Simulink and a comparison with the conventional SM and the SM fuzzy logic controllers was carried out. The results of simulation illustrated an effectiveness of the proposed SM-H∞ controller even in the presence of the DFIG parameter variations and speed changing compared with the other techniques.

Keywords: Doubly Fed Induction Generator (DFIG), H∞ control, Sliding Mode control, Wind Turbine
Published online
2019-10-24
How to Cite
Saihi, L., Berbaoui, B., Glaoui, H., Djilali, L. and Abdeldjalil, S. “Robust Sliding Mode H∞ Controller of DFIG Based on Variable Speed Wind Energy Conversion System”, Periodica Polytechnica Electrical Engineering and Computer Science. doi: https://doi.org/10.3311/PPee.14490.
Section
Articles