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dc.contributor.author
García Violini, Diego Demián
dc.contributor.author
Faedo, Nicolás Ezequiel
dc.contributor.author
Peña Sanchez, Yerai
dc.contributor.author
Nava, Vincenzo
dc.contributor.author
Ringwood, John V.
dc.date.available
2024-08-19T10:04:21Z
dc.date.issued
2024-11
dc.identifier.citation
García Violini, Diego Demián; Faedo, Nicolás Ezequiel; Peña Sanchez, Yerai; Nava, Vincenzo; Ringwood, John V.; Revisiting excitation force estimation in WECs: On the (mis)use of structure-based estimation approaches; Pergamon-Elsevier Science Ltd; Ocean Engineering; 311; 11-2024; 1-13
dc.identifier.issn
0029-8018
dc.identifier.uri
http://hdl.handle.net/11336/242692
dc.description.abstract
Wave excitation force (torque) estimators, vital in wave energy systems, generally combine the nominal representation of a wave energy converter (WEC) with an excitation force (perturbation) model. Thus, this model-based estimation approach, grounded in the internal model principle, often employs two perturbation models: (i) the harmonic oscillator structure, prevalent in literature, assuming sinusoidal signals; and (ii) the integrator (random walk) scheme, assuming unit step-like signals. These models comprehensively represent a specific family of estimators, as discussed in this study. However, both models may struggle to capture the irregular (stochastic) nature of ocean waves. This study challenges the prevailing assumption that the harmonic oscillator structure, selected for its resemblance to ocean wave oscillations, is inherently the optimal choice. This study provides a rigorous discussion on convergence conditions. Thus, is shown that, while the harmonic oscillator can be highly effective under specific conditions, the random walk structure, despite its simplicity, can surpass the performance of the harmonic oscillator scheme. Formal proofs support this argument, emphasising the effectiveness of the harmonic oscillator can be guaranteed with periodic signals.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Pergamon-Elsevier Science Ltd
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
WAVE EXCITATION
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INTERNAL MODEL PRINCIPLE
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DISTURBANCE ESTIMATION
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CONTROL
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WAVE ENERGY CONVERTER
dc.subject.classification
Control Automático y Robótica
dc.subject.classification
Ingeniería Eléctrica, Ingeniería Electrónica e Ingeniería de la Información
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.subject.classification
Sistemas de Automatización y Control
dc.subject.classification
Ingeniería Eléctrica, Ingeniería Electrónica e Ingeniería de la Información
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
Revisiting excitation force estimation in WECs: On the (mis)use of structure-based estimation approaches
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-08-15T15:27:26Z
dc.journal.volume
311
dc.journal.pagination
1-13
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: García Violini, Diego Demián. Universidad Nacional de Quilmes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Faedo, Nicolás Ezequiel. Politecnico di Torino; Italia
dc.description.fil
Fil: Peña Sanchez, Yerai. Mondragon University; España
dc.description.fil
Fil: Nava, Vincenzo. No especifíca;
dc.description.fil
Fil: Ringwood, John V.. Maynooth University; Irlanda
dc.journal.title
Ocean Engineering
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0029801824022029
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.oceaneng.2024.118864
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