Study on Rigid-Flexible Coupling Effects of Floating Offshore Wind Turbines-中国期刊网

摘要 Inordertoaccountforrigid-flexiblecouplingeffectsoffloatingoffshorewindturbines,anonlinearrigid-flexiblecoupleddynamicmodelisproposedinthispaper.Theproposednonlinearcoupledmodeltakesthehigher-orderaxialdisplacementsintoaccount,whichareusuallyneglectedintheconventionallineardynamicmodel.Subsequently,investigationsonthedynamicdifferencesbetweentheproposednonlineardynamicmodelandthelinearoneareconducted.Theresultsdemonstratethatthestiffnessoftheturbinebladesintheproposednonlineardynamicmodelincreaseswithlargeroverallmotionsbutthatinthelineardynamicmodeldeclineswithlargeroverallmotions.Deformationofthebladesinthenonlineardynamicmodelismorereasonablethanthatinthelinearmodelaswell.Additionally,moredistinctcouplingeffectsareobservedintheproposednonlinearmodelthanthoseinthelinearmodel.Finally,itshowsthattheaerodynamicloads,thestructuralloadsandglobaldynamicresponsesoffloatingoffshorewindturbinesusingthenonlineardynamicmodelareslightlysmallerthanthoseusingthelineardynamicmodel.Insummary,comparedwiththeconventionallineardynamicmodel,theproposednonlinearcouplingdynamicmodelisahigher-orderdynamicmodelinconsiderationoftherigid-flexiblecouplingeffectsoffloatingoffshorewindturbines,andaccordmoreperfectlywiththeengineeringfacts.

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Study on Rigid-Flexible Coupling Effects of Floating Offshore Wind Turbines

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Study on Rigid-Flexible Coupling Effects of Floating Offshore Wind Turbines

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