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1、EquivalenceofSVMandCarrier-basedPWMinThreePhase/Wire/LevelViennaRectifierforUnbalancedLoad2BinLil,LijunHang,LeonM.Tolberf,ZhengyuLUI1:CollegeofElectricalEngineering,ZhejiangUniversity,Hangzhou,2:TheDepartmentofElectricalEngineeringandComputerScience,CHINA
2、,310027TheUniversityofTennessee,Knoxville,TN37996-2250Abstract-Inthispaper,theanalysisofSpaceVectorthecommon-modecomponentsarecalculatedbytheModulation(SVM)ofathreephase/wire/levelViennarectifierisassignmentofshort-vectors,wheretherealizationofSVMisconduc
3、ted,accordingtowhichtheimplementationoftheindirectandtheequivalencebetweenSVMandcarrier-basedequivalentcarrier-basedPWMisdeducedtheoreticallywithinPWMisnotclear.eachseparatedsectorinthediagramofvectors.ComparedwithInaddition,in[18,19],ithasbeendemonstrate
4、dthatifaconventionalthree-levelconverters,theSVMofViennarectifierthree-phaseconverterisworkingunderunbalancedinput,aisdifferentbecauseofitsoperationprinciple,whichisdiscussedsecondharmonicofpowerfrequencywillappearintheDClinkvoltage.In[20-22],adualcurrent
5、controlschemeforindetailinthispaper.Inaddition,theabilityoftheViennaunbalancedinputisproposedinordertoeliminatethesecondrectifiertoworkunderunbalancedpowergridisdemonstratedharmonicintheDClinkvoltage.Thismethodhasbeenprovedaswell.Anadaptiveandrobustcontro
6、llertobalancetheoutputveryeffectivewhenthree-phaseconvertersareworkingundervoltageundertheunbalancedloadfordifferentmodulationunbalancedinput.However,whenSVMisadoptedintheindicesisfurtherdeveloped.Anexperimentalprototypeof2.5Viennarectifier,itsabilitytode
7、alwiththeunbalancedinputiskWViennarectifierwasbuilttoverifythevalidityofthelimitedduetotheunreachablevectors.theoreticalanalysis.Inthispaper,thecommon-modecomponentinjectedintoIndexTerms-Viennarectifier,spacevectormodulationthecarrier-basedPWMisverifiedba
8、sedonthe(SVM),carrier-basedPWM,common-modecomponent,DC-linkimplementationofSVMinViennarectifierwithineachneutralpointbalance.separatedsectorinthediagramofvectors.Also,theabilityoftheViennarectifiertoworkunderunbalan
