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dc.contributor.authorEtemaddar, Mahmoud
dc.contributor.authorBlanke, Mogens
dc.contributor.authorGao, Zhen
dc.contributor.authorMoan, Torgeir
dc.date.accessioned2017-10-30T09:05:05Z
dc.date.available2017-10-30T09:05:05Z
dc.date.created2014-10-21T11:12:11Z
dc.date.issued2016
dc.identifier.citationWind Energy. 2016, 19 (1), 35-50.nb_NO
dc.identifier.issn1095-4244
dc.identifier.urihttp://hdl.handle.net/11250/2462745
dc.description.abstractThis paper analyses the effects of three pitch controller faults on the responses of an onshore wind turbine and a spar-type offshore floating wind turbine. These faults include: a stuck blade pitch actuator, a fixed value fault and a bias fault of the blade pitch sensor. The faults are modeled in the controller dynamic link library and a short-term extreme response analysis is performed using the HAWC2 simulation tool. The main objectives of this paper are to investigate how different faults affect the performance of wind turbines for condition monitoring purposes and which differences exist in the structural responses between onshore and offshore floating wind turbines. Statistical analysis of the selected response parameters are conducted using the six 1-hour stochastic samples for each load case. For condition monitoring purpose, the effects of faults on the responses at different wind speeds and fault amplitudes are investigated by comparing the same response under normal operation. The severities of the individual faults are categorized by the extreme values of structural loads and the structural components are sorted based on the magnitude of the fault effects on the extreme values. The pitch sensor fixed value fault is determined as the most severe fault case and the shaft appears as the structural component that experiences the highest risk. The effects of fault conditions on the offshore floating and the onshore wind turbines are compared to investigate the potential differences. The results show that faults cause more damage to the tower and the yaw bearing for the onshore wind turbine and more damage to the shaft for the offshore floating wind turbine.nb_NO
dc.language.isoengnb_NO
dc.publisherWileynb_NO
dc.titleResponse analysis and comparison of a spar-type floating offshore wind turbine and an onshore wind turbine under blade pitch controller faultsnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionsubmittedVersionnb_NO
dc.source.pagenumber35-50nb_NO
dc.source.volume19nb_NO
dc.source.journalWind Energynb_NO
dc.source.issue1nb_NO
dc.identifier.doi10.1002/we.1819
dc.identifier.cristin1165543
dc.relation.projectNorges forskningsråd: 223254nb_NO
dc.description.localcodeThis is the pre-peer reviewed version of the following article: Etemaddar, M., Blanke, M., Gao, Z., and Moan, T. (2016) Response analysis and comparison of a spar-type floating offshore wind turbine and an onshore wind turbine under blade pitch controller faults. Wind Energ., 19: 35–50, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/we.1819/abstract . This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archivingnb_NO
cristin.unitcode194,64,20,0
cristin.unitcode194,63,25,0
cristin.unitnameInstitutt for marin teknikk
cristin.unitnameInstitutt for teknisk kybernetikk
cristin.ispublishedtrue
cristin.fulltextpreprint
cristin.qualitycode2


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