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1、310IEEETRANSACTIONSONINDUSTRIALELECTRONICS,VOL.61,NO.1,JANUARY2014Current-FedInterleavedPhase-ModulatedSingle-PhaseUnfoldingInverter:Analysis,Design,andExperimentalResultsUdupiR.Prasanna,Member,IEEE,andAkshayK.Rathore,SeniorMember,IEEEAbstractThispaper
2、presentsanoveldirectcurrent-fedin-terleavedphase-modulatedsingle-phaseunfoldinginverterforfuel-cellapplications.Twoactive-clampedzero-voltageswitchingcurrent-fedhalf-bridgeisolatedconvertersareinterleavedinpar-allelinputandseriesoutputconfiguration.Phas
3、emodulationisproposedtocontrolthesetwoconvertercells,whichgeneratearectifiedsinusoidalpatternatthedclink.AsimpleH-bridgeunfoldingdcacinversionisusedtoproducesingle-phasesinevoltageatlinefrequencyswitchingusingsquare-wavecontrol.Thisnotonlysimplifiesthein
4、versionstageintermsofmodulationbutalsoreducestheswitchinglosses.Directfront-endcurrent-fedbasedunfoldinginverterisnotreportedinliteratureyet.Detailedanalysisanddesignoftheproposeddirectcurrent-fedsingle-phaseunfoldinginverterhasbeenpresented.Simulation
5、waveformsus-ingPSIM9.0.4aregiventoverifythepresentedanalysisanddesign.Experimentalresultsonalaboratoryprototyperatedat200Waredemonstratedtosupporttheinvestigation,tovalidateFig.1.Hybriddistributedpowergenerationsystem.theaccuracyoftheproposedanalysisan
6、ddesign,andtotesttheperformance.canbeusedforcogenerationorheating.Distributedgenera-tionforstand-aloneandgrid-tiedapplicationsforresidentialIndexTermsCurrent-feddc/dcconverter,fuelcells,high-andremotepowersystemsisanimportantapplicationoffuelfrequency(
7、HF),inverter,photovoltaic(PV).cells.Atwo-stagefuel-cellinverter,i.e.,high-frequency(HF)I.INTRODUCTIONtransformerisolateddc/dcconverterfollowedbyaninverterhasbeenadoptedbyindustriesandhasbeenproposedwithCARCITYofconventionalfuelsourcesandtheirimpactdiff
8、erentconfigurationsandmodulationtechniquesinliteratureSontheenvironmentaredrivingmostofthecountriestoachievethegivenobjective[1]–[3].tomovetowardgreenandrenewablesourcesofenergytoApush–pulldc/dcconvertertoboostthefuel-cellvoltagemeetexpo
