An Anti-Windup Mechanism for State Constrained Linear Control of Wave Energy Conversion Systems: Design, Synthesis, and Experimental Assessment

Nicolas Faedo*, Fabio Carapellese, Guglielmo Papini, Edoardo Pasta, Facundo D. Mosquera, Francesco Ferri, Ted K.A. Brekken

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

1 Citation (Scopus)
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Abstract

Motivated by the necessity of suitable state constraint mechanisms within linear time-invariant (LTI) energy-maximising control of wave energy converters (WECs), we present, in this article, an anti-windup (AW) scheme for state constraint satisfaction, where the associated unconstrained controller is designed via impedance-matching theory for WEC systems. As in the standard (input) AW scenario, the adopted technique provides a mechanism for 'informing' the (unconstrained) controller when constraints are active, so that appropriate modifications to future control actions can be taken accordingly. The overall adopted AW technique is tested experimentally, on a prototype of the Wavestar WEC system, available at Aalborg University (Denmark). We explicitly demonstrate that the proposed AW scheme is able to consistently respect the defined state constraints, having a mild impact on overall energy absorption performance when compared to its unconstrained counterpart.

Original languageEnglish
JournalIEEE Transactions on Sustainable Energy
Volume15
Issue number2
Pages (from-to)964-973
Number of pages10
ISSN1949-3029
DOIs
Publication statusPublished - 1 Apr 2024

Bibliographical note

Publisher Copyright:
© 2010-2012 IEEE.

Keywords

  • anti-windup
  • impedance-matching
  • linear control
  • state constraints
  • Wave energy
  • WEC

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