Gain scheduling control of variable speed WTG under widely varying turbulence loading.pdf

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1、ARTICLEINPRESSRenewableEnergy32(2007)2407–2423www.elsevier.com/locate/reneneDataBankGainschedulingcontrolofvariablespeedWTGunderwidelyvaryingturbulenceloadingaa,aEndusaBillyMuhando,TomonobuSenjyu,NaomitsuUrasaki,abcAtsushiYona,HiroshiKinjo,ToshihisaFunabashiaElectricalandElectronicsEngineering,

2、UniversityoftheRyukyus,Senbaru1,Nishihara,Okinawa903-0213,JapanbMechanicalSystemsEngineering,UniversityoftheRyukyus,Senbaru1,Nishihara,Okinawa903-0213,JapancMeidenshaCorporation,RiversideBldg36-2,Nihonba-shiHokozaki-cho,Chuo-ku,Tokyo103-8515,JapanReceived30August2006;accepted31December2006Availa

3、bleonline6March2007AbstractProbabilisticparadigmsforwindturbinecontrollerdesignhavebeengainingattention.Motivationderivesfromtheneedtoreplaceoutdatedempirical-baseddesignswithmorephysicallyrelevantmodels.ThispaperproposesanadaptivecontrollerintheformofalinearquadraticGaussian(LQG)forcontrolofast

4、all-regulated,variablespeedwindturbinegenerator(WTG).Inthecontrolscheme,thestrategyistwofold:maximizationofenergycapturedfromthewindandminimizationofthedamagecausedbymechanicalfatigueduetovariationoftorquepeaksgeneratedbywindgusts.Estimatedaerodynamictorqueandrotationalspeedareusedtodeterminethe

5、mostfavorablecontrolstrategytostabilizetheplantatalloperatingpoints(OPs).Theperformanceoftheproposedcontrolleriscomparedwiththeclassicalproportional-integral-derivative(PID)controller.TheLQGisseentobesignificantlymoreefficientespeciallyinthealleviationofhighaerodynamictorquevariationsandhencemecha

6、nicalstressesontheplantdrivetrain.Simulationresultsvalidatetheeffectivenessoftheproposedmethod.r2007ElsevierLtd.Allrightsreserved.Keywords:Aerodynamictorque;LQG;Stallcontrol;Turbulence;WindturbinegeneratorCorrespondingauthor.Tel.:+81988958686;fax:+81988958708.E-mailaddress:b985542@tec.u-ryukyu.

7、ac.jp(T.Senjyu).0960-1481/$-seefrontmatterr2007ElsevierLtd.Allrightsreserved.doi:10.1016/j.renene.2006.12.011ARTICLEINPRESS2408E.BillyMuhandoetal./RenewableEnergy32(2007)240724231.IntroductionControlofmodernvariablespeedwind