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1、UltrafastAutonomousSolidStateCircuitBreakersforShipboardDCPowerDistributionZ.JohnShen,ArefM.Roshandeh,ZhenyuMiao,andGourabSabuiDepartmentofElectricalandComputerEngineeringIllinoisInstituteofTechnologyChicago,Illinois,USAEmail:johnshen@ieee.orgAbstract—Sho
2、rtcircuitprotectionremainsoneofthemajortheconvertersourceshutsitselfdownandcreatesalocaltechnicalbarriersinDCpowersystems.Thispaperintroducesablackout.newconceptofultrafastautonomousSSCBs.ThenewSSCBcomprisesoneormorenormally-onWBGtransistorasthemainFast-a
3、ctingsolidstatecircuitbreakers(SSCBs)havebeenstaticswitchandafast-startingisolatedDC/DCconverterastheintensivelyinvestigatedasasolutiontothissystemproblemprotectiondriver.Itdetectsshortcircuitfaultsbysensingits[2][4]-[10][12].PowersemiconductorssuchasIGBT
4、s,IGCTsdrain-sourcevoltagerise,anddrawspowerfromthefaultandmorerecentlywidebandgap(WBG)semiconductorconditionitselftoturnandholdofftheswitch.Prototypesswitchesarecommerciallyavailableinvoltageandcurrentexperimentallydemonstraterepeatedinterruptionoffaultr
5、atingsthatarecompatiblewiththerequirementsforashipcurrentsupto180amperesataDCbusvoltageof400voltsdistributionsystem.Themicrosecondresponsetimeofpowerwithin0.8µs.Amethodtoextendthisconcepttohigherbussemiconductorsallowsthemtolimitfaultcurrenttolevelsfarvol
6、tagesisalsoproposedandverifiedwithPSPICEsimulation.Abelowthosedictatedbythesupplyinggenerators,andhybridprotectionstrategy,whichcombinesprotectivepowerconsequentlyleadstolowermagneticandthermalstressesonconverters,autonomousSSCBs,andnetworkedSSCBs,isdistr
7、ibutioncomponents,lowerenergydeliveredtofaults,proposedforshipboardDCpowerarchitectures.fasterfaultisolationandminimalvoltagedisturbance.Keywords—DCpower,SiCJFET,solidstatecircuitbreakerFig.1depictsaconceptualbidirectionalSSCBcircuit(SSCB),WBGsemiconducto
8、rs.schematic.ThemainstaticswitchisshownasacommonbidirectionalconnectionoftwodiodesandtwoactiveI.INTRODUCTIONswitchingdevicessuchasIGBTsorIGCTs.ThefaultcurrentisusuallysensedbyacurrentsensorwhichisconnectedtoaDCpower
