A New Sliding Mode Control Strategy for Variable-Speed Wind Turbine Power Maximization

Khalfallah Tahir, Ckeikh Belfedel, Tayeb Allaoui, Mouloud Denai, M'hamed Doumi

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12 Citations (Scopus)
49 Downloads (Pure)

Abstract

The paper proposes a new sliding mode power control strategy for a wound-field synchronous generator-based variable speed wind energy conversion systems to maximize the power extracted from the wind turbine. The proposed controller can handle the inherent nonlinearities in wind energy conversion systems and the randomness of the wind speed as well as the uncertainties of the model and external disturbances. To reduce the chattering phenomenon that characterizes conventional sliding mode control, a sigmoid function with a variable boundary layer is proposed. The adaptive switching gains are adjusted on-line by using a fuzzy logic-based technique. Several simulation scenarios were performed to evaluate the performance of the proposed control scheme. The results demonstrate that this controller provides excellent response characteristics, is robust against parameter variations, and free from chattering phenomenon as compared with the conventional sliding mode control.

Original languageEnglish
Article numbere2513
JournalInternational Transactions on Electrical Energy Systems
Volume28
Issue number4
Early online date10 Jan 2018
DOIs
Publication statusPublished - 1 Apr 2018

Keywords

  • chattering phenomenon
  • fuzzy logic
  • maximum power point tracking
  • sliding mode control
  • wind energy conversion systems
  • wound-field synchronous generator

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