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1、AnalysisofDemagnetizationFaultsinSurface-MountedPermanentMagnetSynchronousMotorswithSymmetricWindings1211J.Urresty,J.Riba,H.SaavedraandJ.RomeralAbstract–Thispaperanalyzesasurface-mountedpermanentthesametorque.Consequently,themagnetoperatingpointmagnetsynchronousmotor
2、withsymmetricwindingconfigurationchanges,increasingthefaultseverity[4].runningunderdemagnetizationfault.Theanalysisisbasedon2DInthisworkaSPMSMwithtwodemagnetizationtypesisFEMsimulationswhichincludesrotormagnetskewedeffects.Twoanalyzed:auniformdemagnetizedpole-allthem
3、agnetsofatypesofdemagnetizationareanalyzed;uniformandlocalrotorpolearepartiallydemagnetized-,andapolewithademagnetization.Itisproposedtheuseofzero-sequencevoltageremovedmagnet,thuswithonlyademagnetizedregion.Thecomponentforfaultdiagnosispurposes.Simulationsandanalysi
4、swasmadebymeansofFEMsimulations,whichhaveexperimentalresultsshowthesuitabilityofthemethod.intoaccountskewedrotorgeometries[5].IndexTerms–Permanentmagnetsynchronousmachines,Simulationresultsshowthatinthestudiedcases,nodemagnetization,finiteelementsanalysis,simulation,
5、skewedadditionalharmonicsappearintheSPMSMback-emfvoltagemagnets,faultdiagnosis,zerosequencevoltage.andinthestatorcurrentsspectrumsdifferentthanthosealreadypresentinthespectrumofahealthymachine.Thus,itmakesI.INTRODUCTIONdifficultthediagnosisbymeansofanalyzingthecurren
6、tspectrum[6].ExperimentaltestscorroboratethesimulationInmanyhigh-performancesystems,motorsizeandinertiaareresults.critical.Electricalmotorswithhigh-powerdensitycanofferaInthisworkitisproposedtheuseofthezero-sequenceperformanceadvantageinapplicationssuchaselectricvehi
7、clesvoltagecomponent(ZSVC)methodtodetectdemagnetizationandaeronauticalactuators[1].Surface-mountedpermanent-faultsinSPMSMs.TheZSVCmethodmayalsobeusedtomagnetsynchronousmachines(SPMSM)haveappealingdiagnoseothertypeoffaults-e.g.statorshortcircuits[7]-ortoattributesincl
8、udinghighefficiencyandreliabilityaswellasestimatetherotorposition[8].higherpowerdensity,superiorpowerfactorandsynchronousoperation.
