Nonlinear robust sliding mode - Backstepping hybrid control for WECS -theoretical design and experimental evaluation

Echiheb, Farah, Elkafazi, Ismail, Bossoufi, Badre, El bhiri, Brahim, Almalki, Mishari Metab and Alghamdi, Thamer 2024. Nonlinear robust sliding mode - Backstepping hybrid control for WECS -theoretical design and experimental evaluation. Heliyon 10 (11) , e31767. 10.1016/j.heliyon.2024.e31767

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Abstract

This paper proposes a new contribution in the field of optimizing control techniques for wind systems to enhance the quality of the energy produced in the grid. Although the Sliding Mode control technique, whether classical or involving the use of artificial intelligence, has shown interesting results, its main drawback lies in the oscillation phenomenon commonly referred to as “chattering.” This phenomenon affects the accuracy and robustness of the system, as well as the parametric variation of the system. In this work, we propose a solution that combines two nonlinear techniques based on the Lyapunov theorem to eliminate the chattering phenomenon. It is a hybrid approach between the Backstepping strategy and the Sliding Mode, aiming to control the active and reactive powers of the doubly fed induction generator (DFIG) connected to the electrical grid by two converters (grid side and machine side). This hybrid technique aims to improve the performance of the wind system in terms of precision errors, stability, as well as active and reactive power. The proposed solution has been validated in the Matlab & Simulink environment to assess the performance and robustness of the proposed model, as well as experimentally validated on a test bench using the DSPACE 1104 card. The obtained results are then compared with other techniques, demonstrating a significant improvement in performance.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	Elsevier
ISSN:	2405-8440
Date of First Compliant Deposit:	5 June 2024
Date of Acceptance:	21 May 2024
Last Modified:	05 Jun 2024 10:00
URI:	https://orca.cardiff.ac.uk/id/eprint/169317

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