永磁同步电动机外文翻译范文文档格式.docx
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永磁同步电动机外文翻译范文文档格式.docx
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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
Alwaysmagneticbeltsynchromotordirecttorquecontrolsystem
0-preface
Synchromotorbecauseofhavingpowerfactorhigher-,run-timeefficiencyhigher-,stabilitygood,therevolvingspeedHengsettlestowaitamerit,isextensivelybeenappliedtoindustrialproductionstartingfaultthatacquaintswithsynchromotor,anddebuggingintime,allhaveimportantmeaningtothemotorandtheproductionwayofenergyintime,accuratedebuggingandtransactionfault,havetovsthefamiliarfaultprogressofthesynchromotorindetailanalytical!
1-Familiarfault
Thesynchromotorafterswitchingonelectricitytheincapabilitystarts
Thesynchromotorafterstartingtheincapabilityrun-timegenerallyhasthereasonofseveralsasfollows:
(1)Powersupplyvoltageoveratthesquareofvoltage,thestartingtorquedirectproportionofsynchromotor'
sthevoltageofpowersupplyovermakelowthestartingtorqueofsynchromotorsignificantlythedroopislowerthanloadtroque,cannotstartthusandwanttoraisevsthispowersupplyvoltagetoenlargethestartingtorqueofdynamo.
(2)Thefaultofmotorsettle,therotorwindinghadnoshortcircuit,opencirctui,opensolderingandlinkbadetc.fault,thesethefaultswillmakethedynamocannotstarttocreatestartingofratingofintensityofmagneticfield,makethusthedynamocannotstart;
Checkingthemotorbearinghasalreadyhadnofailure,theportcaphashavenoloose,ifbearingfailureportshroudloose,resultinbearing'
sdownsinking,
mutuallyrubwithstatorironcore,resultinthusdynamo'
scanningnotstart,vssettletherotorfaultcanbeshakentable
withthelowtension,graduallyclicktochecktoseekafaultconditionandadopthomologoustreatment;
Thecountersgaftacceptsandcarriestoshroudalooseconditionandallwantsapancarbeforedrivingeachtimeandseesmotorrotorwhetherslewingisvivid,ifbearingorshaftkiowattdamageandreplaceintime.
(1)Thecontroldevicebreakskindoffaultsaremostlythe.outputvoltageofthewindingsofLimagneticbelttoadjustnotappropriateordon'
toutput,resultinthestatorcurrentofmotoroverbig,causethemotorconductelectricitytherunmakeorthelosingofdynamomagneticbeltrun-checkwhetheroutputvoltagecurrentanditswaveformthattheLimagneticbeltequipsisnormalatthistime,theRongbreakswhetherthemachineRongbreaks,thecontactisbad;
Whethercircuitboardplug-inputsprisonoralignment;
Checkloopresistance,putoutwhethercrystalgatetubeofmagnetburnsoutorbrokesthrough.
(2)Mechanicalasbedraggedalongadynamicmachinerytoblock,resultinmotorincapability'
sstarting,therotorthatmovesmotorinresponsetothepanatthistimeseeswhethertheslewingisvivid,machineryburdenwhetherexistencefault
Thesynchromotorincapabilityleadslongintosynchronization.
Synchromotorincommonuselawofnonsynchronousstarting,throwinLimagneticbeltwhenthemotorrotorrevolvingspeedhitssynchronousrevolvingspeedof95%,makeitleadslongintosynchromotorincapabilityleadslongintosynchronousreasonasfollows:
(1)TheLimagneticbeltwindingshortthewindingofLimagneticbelt,existenceshortcircuitbreaksdown,asaresultmakesmotorableto
stabilizerun-timebutincapabilityandleadlongintosynchronizationwhilebeinglowerthan
synchronousrevolvingtoseektheLimagneticbeltwindingshortcircuit,canopenintolow-tension(aboutthe30Vs)intherotorderivationon-line,putonthemagneticpolessurfacewithahandworksteelsaw,pursueinspectionmagneticpoles,ifvibratingisviolent,explainthemagneticpolestohavenoshortcircuitonsteelsawofthemagneticpoles'
surface,ifthevibratingofsawblademicroordon'
tflap,explainthemagneticpolesshortunloadingthemagneticpoles,checkthefaulttoclick,isshort-circuitdegree,adoptlocaltomendorre-roundtomake.
(2)Powersupplyvoltageoversupplyvoltageoverlow,resultinthestrongLilinkofthedeviceofLimagneticbeltincapabilityworking,makethemotorincapabilityleadlongintosynchronizationthus,theconcretewayistoraisepowersupplyvoltageappropriately.
(3)ThefaultofLimagneticbeltasthrowLioverspeedy(namelythrowinLimagneticbelt,motorrotorrevolvingspeedoverlow),willmakethemotorcannotleadlongintosynchronization,shouldchecktothrowiftheLilinkexistsfaultatthisLimagneticbeltdevicefault,theoutput'
scurrentislowerthanaratingvalue,causetheelectricitymagnetictroqueofdynamooversmallbutcannotleadlongintosynchronization,atthistimeinresponsetoscrutinyLimagneticbeltdeviceofthr
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