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

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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.

OriginalsprogEngelsk
TidsskriftIEEE Transactions on Sustainable Energy
Vol/bind15
Udgave nummer2
Sider (fra-til)964-973
Antal sider10
ISSN1949-3029
DOI
StatusUdgivet - 1 apr. 2024

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© 2010-2012 IEEE.

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