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1、258IEEETRANSACTIONSONINDUSTRIALELECTRONICS,VOL.61,NO.1,JANUARY2014Analysis,Design,andExperimentalVerificationofaSynchronousReferenceFrameVoltageControlforSingle-PhaseInvertersMohammadMonfared,Member,IEEE,SaeedGolestan,Member,IEEE,andJosepM.Guerrero,SeniorMember,I
2、EEEAbstractControlofthree-phasepowerconvertersinthesyn-topologywhichcanoperateeitheringrid-connectedorstand-chronousreferenceframe(SRF)isnowamatureandwell-alonemode.Instand-aloneorislandoperationmode,i.e.,whendevelopedresearchtopic.However,forsingle-phaseconvert
3、ers,itthegridisnotpresent,thelocalloadsshouldbesuppliedbyisnotaswellestablishedasthree-phaseapplications.ThispapertheDGsystem,whichnowactsasacontrolledvoltagesource.dealswiththedesignofanSRFmultiloopcontrolstrategyforsingle-phaseinverter-basedislandeddistributed
4、generationsys-Thus,theessentialrequirementistocontrolthesystemvoltagetems.TheproposedcontrollerusesanSRFproportionalintegralparameterssuchasamplitudeandfrequencywithfastdynamiccontrollertoregulatetheinstantaneousoutputvoltage,acapacitorresponseandzerosteady-stat
5、eerror.currentshapingloopinthestationaryreferenceframetopro-Variouscontroltechniquesforsingle-phaseVSIsinstand-videactivedampingandimprovebothtransientandsteady-statealonemodehavebeenpresentedintheliterature.Owingtoperformances,avoltagedecouplingfeedforwardtoimp
6、rovethesystemrobustness,andamultiresonantharmoniccompensatortoavailabilityandlowcostofadvanceddigitalsignalprocessors,preventlow-orderloadcurrentharmonicstodistorttheinverterdigitalcontrolstrategiesbasedonrepetitivecontrol[5]–[8],outputvoltage.Sincethevoltageloo
7、pworksintheSRF,itisnotdead-beatcontrol[9]–[11],anddiscrete-timesliding-modecon-straightforwardtofinetunethecontrolparametersandevaluatetrol[12]–[15]havebeenproposedrecently.Digitalrepetitivethestabilityofthewholeclosed-loopsystem.Toovercomethiscontrolisproposedto
8、reduceharmonicdistortionsoftheoutputproblem,thestationaryreferenceframeequivalentofthevoltageloopisderived.Then,astep-by-stepsystematicdesignprocedurevoltageproducedb
