Variable Structure Control by Discontinuous versus Continuous Signal in a DFIG

¹ Department of Electrical Engineering, Faculty of Electrical Engineering/Intelligent Control and Electrical Power Systems Laboratory, Djillali Liabes University, Sidi Bel-Abbes, Algeria
² Department of CSE, Graphic Era Hill University, Bhimtal, Uttarakhand, India
³ Faculty of Engineering and Architecture, Department of Electrical & Electronics Engineering, Nisantasi University, Istanbul, Turkey
⁴ Department of Electrical Engineering, Graphic Era (Deemed to be University), Dehradun - 248002, India
⁵ Graphic Era Hill University, Dehradun, 248002, India

^* Corresponding author: abdelkader.achar@univ-sba.dz

Abstract

This paper introduces a control strategy for effectively managing the active and reactive power of a double-feed induction generator (DFIG) by employing a Variable Structure Control by Continuous Signal (VSC-CS). Unlike Variable Structure Control by Discontinuous Signal (VSC-DS), which suffers from the undesirable chattering effect caused by the abrupt control signal changes along the sliding surface, the proposed VSC-CS technique mitigates this issue while maintaining the robustness to DFIG parametric variations offered by the VSC-DS approach. To validate the effectiveness of the VSC-CS control approach, extensive simulations using MATLAB/Simulink software demonstrate substantial improvements in power quality and a significant reduction in chattering phenomenon.