永磁同步电动机外文翻译范文

毕业设计（外文翻译）题目永磁同步电动机直接转矩控制系统系（院）自动化系专业电气自动化技术学生姓名学号指导教师职称2011年6月15日滨州学院本科毕业设计(外文翻译)1Alwaysmagneticbeltsynchromotordirecttorquecontrolsystem0-prefaceSynchromotorbecauseofhavingpowerfactorhigher-,run-timeefficiencyhigher-,stabilitygood,therevolvingspeedHengsettlestowaitamerit,isextensivelybeenappliedtoindustrialproductionamid.Thestartingfaultthatacquaintswithsynchromotor,anddebuggingintime,allhaveimportantmeaningtothemotorandtheproductionsystemses.Bywayofenergyintime,accuratedebuggingandtransactionfault,havetovsthefamiliarfaultprogressofthesynchromotorindetailanalytical!1-Familiarfault1.1-ThesynchromotorafterswitchingonelectricitytheincapabilitystartsThesynchromotorafterstartingtheincapabilityrun-timegenerallyhasthereasonofseveralsasfollows:(1)Powersupplyvoltageoverlow.Becauseatthesquareofvoltage,thestartingtorquedirectproportionofsynchromotor'sthevoltageofpowersupplyovermakelowthestartingtorqueofsynchromotorsignificantlythedroopislowerthanloadtroque,cannotstartthusandwanttoraisevsthispowersupplyvoltagetoenlargethestartingtorqueofdynamo.(2)Thefaultofmotor.Checkmotorsettle,therotorwindinghadnoshortcircuit,opencirctui,opensolderingandlinkbadetc.fault,thesethefaultswillmakethedynamocannotstarttocreatestartingofratingofintensityofmagneticfield,makethusthedynamocannotstart;Checkingthemotorbearinghasalreadyhadnofailure,theportcaphashavenoloose,ifbearingfailureportshroudloose,滨州学院专科毕业设计(外文翻译)2resultinbearing'sdownsinking,mutuallyrubwithstatorironcore,resultinthusdynamo'scanningnotstart,vssettletherotorfaultcanbeshakentablewiththelowtension,graduallyclicktochecktoseekafaultconditionandadopthomologoustreatment;Thecountersgaftacceptsandcarriestoshroudalooseconditionandallwantsapancarbeforedrivingeachtimeandseesmotorrotorwhetherslewingisvivid,ifbearingorshaftkiowattdamageandreplaceintime.(3)Thecontroldevicebreaksdown.Thiskindoffaultsaremostlythed.c.outputvoltageofthewindingsofLimagneticbelttoadjustnotappropriateordon'toutput,resultinthestatorcurrentofmotoroverbig,causethemotorconductelectricitytherunmakeorthelosingofdynamomagneticbeltrun-time.ShouldcheckwhetheroutputvoltagecurrentanditswaveformthattheLimagneticbeltequipsisnormalatthistime,theRongbreakswhetherthemachineRongbreaks,thecontactisbad;Whethercircuitboardplug-inputsprisonoralignment;Checkloopresistance,putoutwhethercrystalgatetubeofmagnetburnsoutorbrokesthrough.(4)Mechanicaltrouble.Suchasbedraggedalongadynamicmachinerytoblock,resultinmotorincapability'sstarting,therotorthatmovesmotorinresponsetothepanatthistimeseeswhethertheslewingisvivid,machineryburdenwhetherexistencefault1.2-Thesynchromotorincapabilityleadslongintosynchronization.Synchromotorincommonuselawofnonsynchronousstarting,throwinLimagneticbeltwhenthemotorrotorrevolvingspeedhitssynchronousrevolvingspeedof95%,makeitleadslongintosynchronization.Thesynchromotor滨州学院本科毕业设计(外文翻译)3incapabilityleadslongintosynchronousreasonasfollows:(1)TheLimagneticbeltwindingshortcircuit.BecausethewindingofLimagneticbelt,existenceshortcircuitbreaksdown,asaresultmakesmotorabletostabilizerun-timebutincapabilityandleadlongintosynchronizationwhilebeinglowerthansynchronousrevolvingspeed.ChecktoseektheLimagneticbeltwindingshortcircuit,canopenintolow-tension(aboutthe30Vs)intherotorderivationon-line,putonthemagneticpolessurfacewithahandworksteelsaw,pursueinspectionmagneticpoles,ifvibratingisviolent,explainthemagneticpolestohavenoshortcircuitonsteelsawofthemagneticpoles'surface,ifthevibratingofsawblademicroordon'tflap,explainthemagneticpolesshortcircuit.Afterunloadingthemagneticpoles,checkthefaulttoclick,isshort-circuitdegree,adoptlocaltomendorre-roundtomake.(2)Powersupplyvoltageoverlow.Powersupplyvoltageoverlow,resultinthestrongLilinkofthedeviceofLimagneticbeltincapabilityworking,makethemotorincapabilityleadlongintosynchronizationthus,theconcretewayistoraisepowersupplyvoltageappropriately.(3)ThefaultofLimagneticbeltdevice.SuchasthrowLioverspeedy(namelythrowinLimagneticbelt,motorrotorrevolvingspeedoverlow),willmakethemotorcannotleadlongintosynchronization,shouldchecktothrowiftheLilinkexistsfaultatthistime.IfLimagneticbeltdevicefault,theoutput'scurrentislowerthanaratingvalue,causetheelectricitymagnetictroqueofdynamooversmallbutcannotleadlongintosynchronization,atthistimein滨州学院专科毕业设计(外文翻译)4responsetoscrutinyLimagneticbeltdeviceofthrowLilinkandphase-shiftinglink,waveformuseoscillographtochecktothrowLilinkandphase-shiftinglink,shouldalsocheckandputoutmagneticbeltlinkandputoutcrystalgateofmagneticbeltwhethertubediscoversaquestionasusual,handleintime,iftheincapabilityhandlesintime,bywayoftheenergyquicklyrestorecapacity,shouldreplacetoprovideforusecircuitboard.1.3-Brushandcompresstightlyspringandgathertogiveorgetanelectricshockringfault.Thebrushleadsshortandcompressestightlyspringpressscarcityandmakebrushandgathertogiveorgetanelectricshockringofindirectlytouchbadly,thusgeneratesparkorarcelectric,arcelectricorsparktoontheotherhandandeasilysparkshortcircuit,willmakearcelectricburnontheotherhandshorter,sparkopencirctuithus,resultinLimagneticbel