CIGRE_MMC_DesignAspects

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1、MMCDesignAspectsandApplicationsJohnStraussSiemensAG.John.Strauss@Siemens.com1VSC-HVDCwithMMC–BasicSchemeReferenceHVDCPLUSConverterArmConverterModulePowerModuleElectronics(PME)PM1PM1PM1PM2PM2PM2PowerModule(PM)PMnPMnPMnVConverterReactorsdudPM1PM1PM1D1PM

2、2PM2PM2IGBT1D2PMnPMnPMnIGBT2PhaseUnitTheResult:MMC–aperfectVoltageGenerationACandDCVoltagescontrolledbyConverterArmVoltages:+V/2dVConv.)VAC0-V/2dBenefitsofVSC-HVDCSpaceSavingHVDCPLUSExample400MWHVDCPLUSHVDC“Classic”BasicFeaturesofMMCTechnologyAslittle

3、as20modulesperphasewillalreadyThereactivepowercanbecontrolledtoanymeetIEC/IEEElimitswithoutACharmonicvaluewithinthelimitingcharacteristicsshuntfilters.MMCtopology-FeaturesandBenefitsLowsemiconductorswitchingLowconverterlossesfrequencyNoHarmonic/PLC/Ra

4、dioLowgenerationofharmonicsinterferencefilteringrequiredHighmodularityinhardwareHighflexibility,economicalandsoftwarefromlowtohighpowerratingsUseofwell-provenstandardHighavailabilityofstate-of-componentsthe-artcomponentsSinusshapedACvoltageUseofstanda

5、rdACwaveformstransformersEasyscalabilityLowengineeringeffortsReducednumberofprimaryHighreliability,componentslowmaintenancerequirementsReferencefromHVDCPLUS-Win-TDCwithPLUSCONTROLWin-TDCSCADAInterfaceLocalHMIRemoteHMIRCISIMATICWinCCOperatorLevelC&PLev

6、elPLUSCONTROLSIMATICTDCCurrentControlSystemCCSModuleManagementSystemI/OLevelMeasuringSystemMMS1MMSnI/OUnitI/OUnitSwitchgear&AuxiliariesVoltages&CurrentsConverter–PowerModulesMMCControls-FeaturesandBenefitsCurrentreversalpossiblewithAllowsforprecisepow

7、erflownominimumholdingcurrentscontroldowntoZeroMWAllowsforindependentcontrolFulloutputvectorcontrolsofActiveandReactivePowerGoodforCableandMulti-Uni-polarDCvoltageTerminalapplicationsUsedforBlackStartofOffshoreFullprimaryU/Fcontrolsgrids(aswellasSRAS)

8、AllowsforFaultRideThroughVeryFastClosedLoopControl(FRT)andfaultcurrentinjectAllowsforevenFaster(Linear)FlexibleControlModeCoord.PowerReversalwithout(P-Q/U-F/Multi-Term)BlockingoftheConverters.FaultRideThrough(FRT)–TransbayCable(InverterStation