4P operational harmonic and blade vibration in wind turbines: a real case study of an active yaw system and a concrete tower

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dc.contributor.authorTorres Elizondo, Antonio
dc.contributor.authorGil Soto, Javier
dc.contributor.authorPlaza Puértolas, Aitor
dc.contributor.authorAginaga García, Jokin
dc.contributor.departmentIngenieríaes_ES
dc.contributor.departmentIngeniaritzaeu
dc.contributor.departmentInstitute of Smart Cities - ISCen
dc.contributor.funderUniversidad Pública de Navarra / Nafarroako Unibertsitate Publikoaes
dc.date.accessioned2024-04-30T16:13:23Z
dc.date.available2024-04-30T16:13:23Z
dc.date.issued2024
dc.date.updated2024-04-30T15:52:25Z
dc.description.abstractThis study aims to comprehensively investigate the impact of mechanical loads on the performance and lifetime of wind turbines, with particular emphasis on blade vibration at the 4P operational harmonic. Experiments and advanced aeroelastic simulations are combined to assess how active yaw systems and concrete towers affect this specific vibration. Contrary to previous assumptions, field tests have shown that there is a resonance phenomenon in the blade. Specifically, the first edgewise mode of the blade resonates at the 4P frequency, which did not happen in the aeroelastic simulations. Remarkably, thorough aeroelastic simulations show that this resonance is triggered by the excitation of the Edgewise Backward Whirling mode of the rotor, which occurs at the 3P operating harmonic. This study highlights the need for accurate and precise modelling using aeroelastic simulations to reproduce the resonance phenomenon and analyse the contributing factors. A major breakthrough is the discovery that stiffening the active yaw system significantly reduces the 3P hub fixed motions, resulting in reduced blade vibration at the 4P frequency. Furthermore, the simulations show the sensitivity of the 4P vibration to different wind characteristics, providing valuable insights for the design of wind turbines in different environmental conditions.en
dc.description.sponsorshipOpen access funding provided by the Universidad Pública de Navarra.en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationTorres, A., Gil, J., Plaza, A., Aginaga, J. (2024) 4P operational harmonic and blade vibration in wind turbines: A real case study of an active yaw system and a concrete tower. Renewable Energy, 227, 1-10. https://doi.org/10.1016/j.renene.2024.120503.en
dc.identifier.doi10.1016/j.renene.2024.120503
dc.identifier.issn0960-1481
dc.identifier.urihttps://academica-e.unavarra.es/handle/2454/48024
dc.language.isoengen
dc.publisherElsevieren
dc.relation.ispartofRenewable Energy 227, (2024), 120503en
dc.relation.publisherversionhttps://doi.org/10.1016/j.renene.2024.120503
dc.rights© 2024 The Author(s). This is an open access article under the CC BY-NC-ND license.en
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectWind turbineen
dc.subjectBlade vibrationen
dc.subjectOperational resonanceen
dc.subjectBackward whirling modeen
dc.subjectActive yaw systemen
dc.subjectConcrete toweren
dc.title4P operational harmonic and blade vibration in wind turbines: a real case study of an active yaw system and a concrete toweren
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication
relation.isAuthorOfPublicationfe8e3ffe-c917-4f6d-9adf-89540dd6fb80
relation.isAuthorOfPublication236809d6-78a4-4e83-b534-b3981785886e
relation.isAuthorOfPublication6d0936f0-3114-4898-a71e-78d6136c36c1
relation.isAuthorOfPublication.latestForDiscovery236809d6-78a4-4e83-b534-b3981785886e

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