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1、IEEETRANSACTIONSONINDUSTRYAPPLICATIONS,VOL.48,NO.3,MAY/JUNE2012923DetectionandClassificationofRotorDemagnetizationandEccentricityFaultsforPMSynchronousMotorsJongmanHong,StudentMember,IEEE,SangukPark,DoosooHyun,StudentMember,IEEE,Tae-juneKang,StudentMember,IEEE
2、,SangBinLee,SeniorMember,IEEE,ChristianKral,SeniorMember,IEEE,andAntonHaumerAbstractConditionmonitoringofrotorproblemssuchasde-componentsinthePMSMthatdeterminestheperformance,themagnetizationandeccentricityinpermanent-magnetsynchronousefficiency,andthereliabil
3、ityofthemotordrivesystem[1]–[3].motors(PMSMs)isessentialforguaranteeinghighmotorperfor-Recently,PMdemagnetization,rotoreccentricity,andbearingmance,efficiency,andreliability.However,therearemanylimita-failureshavebeenidentifiedasthemajorrootcauseofPMSMtionstoth
4、eofflineandonlinemethodscurrentlyusedforPMSMrotorqualityassessment.Inthispaper,aninverter-embeddedproblems,andintensiveresearchhasbeenperformedonthetechniqueforautomateddetectionandclassificationofPMSMdetectionofthesefaults[4]–[10].Suchfaultscanoccurduerotorfau
5、ltsisproposedasanalternative.Themainconceptistotomanufacturingdefects,operatingstresses,andmisoperation,usetheinvertertoperformatestwheneverthemotorisstoppedandcanresultintheirreversibledegradationofmotorperfor-andtodetectrotorfaultsindependentofoperatingcond
6、itionsmanceandefficiency.Therefore,itisimportanttomonitortheorloadtorqueoscillations,whichisnotpossiblewithmotorcurrentsignatureanalysis(MCSA).Thed-axisisexcitedwithrotorconditionregularlyfortheoptimalperformanceoftheadirect-current+alternating-currentsignal,a
7、ndthevariationinmotorandtheentireprocessthatitdrives.ThispaperfocusestheinductancepatternduetothechangeinthedegreeofmagneticonthedetectionandtheclassificationofrotorfaultssuchassaturationcausedbydemagnetizationoreccentricityisobservedPMdemagnetizationandair-ga
8、peccentricity,whichistherootforfaultdetection.Anexperimentalstudyona7.5-kWPMSMcauseandsymptomofbearingproblems.verifiesthatdemagnetizationandeccentricitycanbedetectedandclassifiedindependen
