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1、碳化硅功率器件在永磁同步电机驱动器中的应用研究ABSTRACTRapidlydevelopmentsinapplicationssuchashybridelectricvehicles,aerospace,electrictractionandhouseholdelectricapplianceraisehigherrequirementsinpermanentmagnetsynchronousmotor,demandinghigherefficiency,higherpowerdensityandhigherreliability.Powerelectri
2、cdevicesaremainconponentsofmotordrivesystem,playinganimportantroleinefficiency,powerdensityandreliability.SiliconCarbidedevicehasadvantagesinfastswitchingspeed,highblockingvoltageandhightemperaturetolerance,thereforewecanforeseetheimprovementofefficiency,powerdensityanddynamicprofo
3、rmanceinmotordrivedesignedbySiCpowerdevices.WiththedevelopmentofSiCpowerelectricdevicemanufacturingtechnology,researchersaremoreandmorefocusedonitsapplicationsinpermanentmagnetsynchronousmotordrive.ThepaperintroducesthestructureofPMSMandcoordinatetransformation.Onthebasis,thepaperc
4、ontinuestoestablishmathmaticmodelofPMSMbasedoncoordinatetransformation,andthenanalysetheprincipleofvoltagevectorcontrolandspacevectorcontrolstrategy.ThispaperanalysespraticalapplicationproblemscausedbyapplyingSiCpowerdeviceindetail.Inmotordriveusingphase-legconfigure,highdv/dtdurin
5、gfastswitchingtransientofonedevicewillaffecttheoperatingbehaviorofitscomplementarydevice,whichiscalledcrosstalk,resultedinextraswithingpowerlossandevenpowerdevicesfailure.ThepaperdiscussestheproblemscausedbyfastswitchingofPMSMdrivebasedonSiCdevices,andanalysesthemechanismcausingcro
6、sstalkinterference.ThepaperstudiesspecificityoffastswitchingcrosstalkproblemsinPMSMdriveusingphase-legconfigure,andexplainsthemethodofcrosstalksuppressionandshowssuppressionexperimentresults.Byanalysingtheinfluenceofparasiticinductorsonpowerdevicesafely-workinginfastswitchingmethod
7、,thispaperplotsthetolerancetoparasiticparameterwhenswitchingspeedisfaster,andexplainsthesuppressionmethodofparasiticinductoreffectandsuppressionexperimentresults.Finally,thepaperanalysesthelossofpowerelectricdeviceinPMSMdrive,whichdemonstrateeffeciencyadvantagebyusingSiCdeviceinste
8、adofSidevice.A1kWPMSMdrive
