异步电动机转子断条故障演化及相关因素分析-谢颖

20073Vol.22No.3223TRANSACTIONSOFCHINAELECTROTECHNICALSOCIETYMar.20071221.1500012.150040TM343FaultyEvolutionofBrokenBarsinInductionMotorsandCorrelativeFactorsAnalysisXieYing1LiWeili2LiShoufa21.HarbinInstituteofTechnologyHarbin150001China2.HarbinUniversityofScienceandTechnologyHarbin150040ChinaAbstractThefiniteelementmodelsofasquirrel-cageinductionmotorinhealthyandfaultycasearedevelopedbasedontheMulti-LoopTheory,andthehealthybarsandthebrokenbarsfaultarestudiedfromsimulationandexperiment.Thesestudiesareperformedusingthemodeltocomputehealthyandfaultycasesperformancedata,whichcontainstatorstartingcurrentwaveforms,currentdensityandmagneticforceontherotorbars,andthedistributionofmagneticfieldforthecaseofnobrokenbarsandfault.Meanwhiletheironcorelossonrotoriscomputed,andthefundamentalcomponentandthethirdharmoniccomponentofairgapfluxdensityareanalyzedbythesearchcoilinducedvoltagedetectiontechnique.Fromthesedata,thefaultysignaturesareextracted.Theoreticalapproachtogetherwithexperimentalresultsconfirmsthevalidityoftheproposedmethod,furthermore,thismethodwhichcouldhelpdevelopdiagnosticsofbrokenbarsandperformanceevaluationofinductionmotorhasgreatpotentialinfutureapplication.KeywordsBrokenrotorbars,faultsdiagnosis,finiteelementmethod,squirrelcageinductionmotors1QC06CO2420061151303220060720200608304220073[1]Y802−212[2-5]22.1[6-7],2.2A[8]111::0zzzzzDJxxyytσµµΓ⎧⎛⎞∂∂∂⎛⎞∂∂+=−+⎪⎜⎟⎜⎟∂∂∂∂∂⎨⎝⎠⎝⎠⎪=⎩AAAA1DΓ1JzσAzµztσ∂∂A12.3KVL[5]1Fig.1Finiteelementmodelofthesquirrel-cageinductionmotorj2ij+1=ijjj00[1]2Fig.2Modelofrotorwithbrokenbarσσµ00µ′2b2b2rRRRσσ′′=′′+22b2r2k002bxxxxµµ′′′++′=′32bR′,2rR′2sx′2rx′,2kx′[7]2.422343E[9,10]ms22602iiiDnLvLπ==BEB4ms602iiDnL=πEB5BimiTEiiVDmnsr/minLm2.5mdsls=×⋅∫∫FJB6FmNJA/mm2lmBTl6JB6m1dMiiisilslS==×=×∑∫∫FJBJB7MJi,Bi,Si[11]2.6()()21.52hmaxcmaxemaxPKfKfKf=++BBB8KhKcKeBmaxf3Y802−21.1kW380V50Hz13123Fig.3Experimentsetupandbrokenbarrotorstocollecthealthyandfaultymotordata3.11246sfs4Fig.4Thedistributionofmagneticfieldintheinductionmotorforahealthymotorcage442007351Fig.5Thedistributionofmagneticfieldintheinductionmotorforaone-broken-barfault62Fig.6Thedistributionofmagneticfieldintheinductionmotorforacontinuoustwo-broken-barfault3.2ZH-1011279A7912sf1[12-15]37Fig.7Statorstartingcurrentwaveformforamotorwithhealthycage8Fig.8Statorstartingcurrentwaveformsforamotorwithone-broken-barfault3.31011223459Fig.9Statorstartingcurrentwaveformforamotorwithcontinuoustwo-broken-barfault10Fig.10Ironcorelossdensitydistributiononrotorbeforeandafterbrokingbars11Fig.11Ironcorelossonrotorbeforeandafterbrokingbars3.44620073121212Fig.12Currentdensityforaone-broken-barfaultandacontinuoustwo-broken-barfaultasafunctionofbarposition3.53313333140.756s3133Fig.13Thethirdharmoniccomponentofairgapfluxdensitybyexperimentbeforeandafterbrokingbars143Fig.14Thethirdharmoniccomponentofairgapfluxdensitybysimulationbeforeandafterbrokingbars2234731113Tab.1Thefundamentalandthirdharmoniccomponentofairgapfluxdensitycomparisonbetweensimulationandexperiment/T3/T0.65340.64330.014810.66010.63800.044120.68870.64430.07653.63151615Fig.15Thethreedifferentcrosssectionsontherotorbar16Fig.16Magneticforcedistributionofdifferentcrosssectionsintherotorbarbeforeandafterbrokingbars4121234548200736[1].[M].:2005.[2]VassentE,MeunierG,FoggiaA.Simulationofinductionmachineoperationusingastepbystepfiniteelementmethodcouplewithcircuitandmechanicalequation[J].IEEETransactionsonMagnetics,1991,27(6):5232-5234.[3]BentounsiA.OnlinediagnosisofdefaultsonsquirrelcagemotorusingFEM[J].IEEETrans.onMagnetics,1998,34(5):3511-3514.[4]BehroozMirafzal.Inductionmachinebroken-barfaultdiagnosisusingtherotormagneticfieldspace-vectororientation[J].IEEETransonIndApple.,2004,40(2):534-542.[5]BanguraJF.Diagnosisandcharacterizationofeffectsofbrokenbarsandconnectorsinsquirrel-cageinductionmotorbytime-steppingcoupledfiniteelementstatespacemodelingapproach[J].IEEETrans.onEC,1999,14(4):1167-1175.[6].[J].2002,210:97-103.NingYuquan.Faultsdetectionandon-linediagnosiscalculatingparameterinsquirrelcageinductionmotorswithbrokenbarsandendringconnections[J].ProceedingsoftheCSEE,2002,2(10):97-103.[7].[M].,1998[8],.[J].2003,73:177-181.YanDengjun,LiuRuifang,HuMingqiang,etal.Transientstartingperformanceofsquirrelcageinductionmotorwithtime-steppingFEM[J].Electricmachinesandcontrol,2003,7(3):177-181.[9].[J].1994(4)37-40.LinBentong,LinJingchuan.Air-gapfluxdensityandloadeffectonstraylossofinductionmotor[J].ElectricalMachineryTechnology,1994,(4):37-40.[10]NagwaM,Elkasabgy,AnthonyR,etal.Detectionofbrokenbarsinthecagerotoronaninductionmachine[J].IEEETransonIAS,1992,28(1):165-171.[11].[M].,1996[12],.Hilbert-Huang[J].200525(11)107-112.NiuFaliang,HuangJin,YangJiaqiang,etal.Rotorbroken-barsfaultdiagnosisofinductionmotorbasedonHilbert-Huangtransformationofthestartingelectroma-gnetictorque[J].ProceedingsoftheCSEE,2005,25(11):107-112.[13]AlbertoBellini,FiorenzoFilippetti,GiovanniFrances-chini,etal.Quantitativeevaluationofinductionmotorbrokenbarsbymeansofelectricalsignatureanalysis[J].IEEETransonIndApp.,2001,37(5):1248-1255.[14],.[J].20032