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1、IEEETRANSACTIONSONPOWERSYSTEMS,VOL.18,NO.2,MAY2003803DynamicModelingofDoublyFedInductionGeneratorWindTurbinesJanakaB.Ekanayake,SeniorMember,IEEE,LeeHoldsworth,XueGuangWu,andNicholasJenkins,SeniorMember,IEEEAbstract—ItisnowrecognizedthatmanylargewindfarmsMomentofinertiaofentirewindturbine.willemploy
2、doublyfedinductiongenerator(DFIG)variable,,Mechanical,electromagnetic,setpointspeedwindturbines.Anumberofsuchwindfarmsarealreadytorque.inoperationandmoreareplannedorunderconstruction.WithOptimaltorque.therisingpenetrationofwindpowerintoelectricitynetworks,increasinglycomprehensivestudiesarerequired
3、toidentifytheOptimaltorque/speedconstantofthewindinteractionbetweenthewindfarm(s)andthepowersystem.Theseturbine.requireaccuratemodelsofdoublyfedinductiongeneratorwindturbinesandtheirassociatedcontrolandprotectioncircuits.ASuperscriptindicatesaperunitquantity.dynamicmodelhasbeenderived,whichcanbeuse
4、dtosimulateFirstsubscriptindicatesdirectandquadra-theDFIGwindturbineusingasingle-cageanddouble-cagerepresentationofthegeneratorrotor,aswellasarepresentationoftureaxesquantities.itscontrolandprotectioncircuits.ThemodelissuitableforuseinSecondsubscriptindicatesstator,rotor,andtransientstabilityprogra
5、msthatcanbeusedtoinvestigatelargedouble-cage.powersystems.Thebehaviorofawindfarmandthenetworkundervarioussystemdisturbanceswasstudiedusingthisdynamicmodel.TheinfluenceoftheDFIGcontrolonthestabilityoftheI.INTRODUCTIONwindfarmwasalsoinvestigatedbyconsideringdifferentcontrolgainsandbyapplyingnetworkvo
6、ltagecontrolthroughbothstatorANYcountrieshavenowrecognizedthewindasasus-sideandrotorsideconverters.MtainablesourceofenergyandtheinstalledcapacityofIndexTerms—Doublyfedinductiongenerators,powersystemwindgenerationworldwidenowexceeds25GW.Bothforrea-dynamicstability,powersystemmodeling.sonsofnetworkco
7、mpatibilityandtoreducemechanicalloads,manylargewindturbines(installedeitheroffshoreoronshore)willoperateatvariablespeedandusedoublyfedinductiongen-NOMENCLATUREerators(DFIGs).[1]Statorvoltage.Inthepast,mostn
