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1、2013TheInternationalConferenceonElectricalEngineering(ICEE2013)Xiamen14-17July,2013AveragemodelingandcontrolofModuleMultilevelConverter11212GUOJUZHANG,YAOCHEN,LISAQI,RONGRONGYU,JIUPINGPANABB(China)CorporateResearchCenter,Beijing,ChinaABB(US)CorporateResearchCenter,Raleigh,USAAb
2、stract:sothatstillnotsatisfactorytosupportefficientModularMultilevelConverter(MMC)hassimulationstudies.presentsgreatpotentialinhighpowerquality,lowAveragemodelingofMMCaimstorealizefast,operationloss,scalabilityandhighreliability,whichstable,andreliableMMCsimulationwithpropermak
3、eMMCagoodchoiceforDCtransmission,MVaccuracy.ItcanreducethecomputationloadofdriveandotherHVorMVapplications.Thispapersimulationplatforms,andthushavegreatdescribestheaveragemodelingandcontrolofMMC.engineeringapplicationvalue.ThispaperdescribesFirstly,theoperationprinciplesofMMCar
4、eanalyzed，theaveragemodelingofMMCandcontrolmethodbasedonwhichtheaverageMMCmodelisdeduced.Secondly,thecontrolmethodsforDCvoltagecontrol,thereof.Insection2,theoperationprinciplesofcirculatingcurrentsuppression,andcapacitorvoltageMMCareanalyzedandtheaveragemodelisbalancing,etcared
5、eveloped.Finally,theeffectivenessdeduced.Insection3,thecontrolmethodincludingoftheproposedaveragemodelisverifiedbycomparingouterloopandinnerloopcontrolisdeveloped.InthesimulationresultsofanMVDCdistributionsystemsection4,anMVDCdistributionsystemmodelisusingdetailedMMCmodels.Thec
6、orrectnessofthesetupwithbothdetailedandaverageMMCmodels.designedcontrolmethodsalsodemonstratedthroughTheeffectivenessoftheproposedaveragemodelandsimulation.Itisalsoproventobefeasibleofusingthecontrolaredemonstratedbysimulationresults.MMCinMVDCapplications.2.OperationprinciplesK
7、eywords:ModuleMultilevelConverter(MMC),averagemodel,ThecircuittopologyofMMCisshowninMVDCsystem,simulationanalysisFigure1,consideringtheconsistencyofthreephases,onlyphaseaisgivenindetail.Inphasea,thereare2Ncascadedsubmodules,and2valvereactorsLa1.Introductionwhichareusedtosuppres
8、sthecirculatingcurrentinnormaloperationandtolimitthera
