永磁同步电动机外文翻译范文.docx

永磁同步电动机外文翻译范文.docx

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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

Alwaysmagneticbeltsynchromotordirecttorquecontrolsystem

0-preface

Synchromotorbecauseofhavingpowerfactorhigher-,run-timeefficiencyhigher-,stabilitygood,therevolvingspeedHengsettlestowaitamerit,isextensivelybeenappliedtoindustrialproductionamid.Thestartingfaultthatacquaintswithsynchromotor,anddebuggingintime,allhaveimportantmeaningtothemotorandtheproductionsystemses.Bywayofenergyintime,accuratedebuggingandtransactionfault,havetovsthefamiliarfaultprogressofthesynchromotorindetailanalytical!

1-Familiarfault

1.1-Thesynchromotorafterswitchingonelectricitytheincapabilitystarts

Thesynchromotorafterstartingtheincapabilityrun-timegenerallyhasthereasonofseveralsasfollows:

（1）Powersupplyvoltageoverlow.Becauseatthesquareofvoltage,thestartingtorquedirectproportionofsynchromotor'sthevoltageofpowersupplyovermakelowthestartingtorqueofsynchromotorsignificantlythedroopislowerthanloadtroque,cannotstartthusandwanttoraisevsthispowersupplyvoltagetoenlargethestartingtorqueofdynamo.

（2）Thefaultofmotor.Checkmotorsettle,therotorwindinghadnoshortcircuit,opencirctui,opensolderingandlinkbadetc.fault,thesethefaultswillmakethedynamocannotstarttocreatestartingofratingofintensityofmagneticfield,makethusthedynamocannotstart;Checkingthemotorbearinghasalreadyhadnofailure,theportcaphashavenoloose,ifbearingfailureportshroudloose,resultinbearing'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,machineryburdenwhetherexistencefault

1.2-Thesynchromotorincapabilityleadslongintosynchronization.

Synchromotorincommonuselawofnonsynchronousstarting,throwinLimagneticbeltwhenthemotorrotorrevolvingspeedhitssynchronousrevolvingspeedof95%,makeitleadslongintosynchronization.Thesynchromotorincapabilityleadslongintosynchronousreasonasfollows:

（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,atthistimeinresponsetoscrutinyLimagneticbeltdeviceofthrowLilinkandphase-shiftinglink,waveformuseoscillographtochecktothrowLilinkandphase-shiftinglink,shouldalsocheckandputoutmagneticbeltlinkandputoutcrystalgateofmagneticbeltwhethertubediscoversaquestionasusual,handleintime,iftheincapabilityhandlesintime,bywayoftheenergyquicklyrestorecapacity,shouldreplacetoprovideforusecircuitboard.

1.3-Brushandcompresstightlyspringandgathertogiveorgetanelectricshockringfault.

Thebrushleadsshortandcompressestightlyspringpressscarcityandmakebrushandgathertogiveorgetanelectricshockringofindirectlytouchbadly,thusgeneratesparkorarcelectric,arcelectricorsparktoontheotherhandandeasilysparkshortcircuit,willmakearcelectricburnontheotherhandshorter,sparkopencirctuithus,resultinLimagneticbeltdeviceonlytheLimagnetoelectricitypressbuthavenoLimagnetoelectricitystreaming;Compresstightlyspringageinglapse,makebrushandgathertogiveorgetanelectricshockringofindirectlytouchbadly,effectthestartingofmotorthus;Gathertogiveorgetanelectricshockaringsurfacetothereisgreasestainandscarorslotscar,willmakebrushandgathertogiveorgetanelectricshockringofindirectlytouchbadly,generatespark,sparkfurtherburngathertogiveorgetanelectricshockring,willalsomakegndshort-circuit,thesparkeffectsthestartingofmotorthus.Forgathertogiveorgetanelectricshockringsuperficialgreasestain,canwipetocleanwiththeacetone;Forthintrace,usemanyfettleshaggingringsofsandpaperssurface,isringsurfaceroughnesstohitR1.6ums,iftheslotscarobviouslyneedstogetonthecarbedtransform,truning,enteramountofknifetotakeeverytime1mmasproper,inthe1-1.5ms/s,thetruningspeedcontrol'sroughnesshitsoftheumsofR1.5-1.8andbecomesbadantitofinallypolishwiththesandpaper2-3timesoverthe0.05mms.

1.4-Thedamperwindingbreaksdown.

Thedamperwindingofsynchromotorrotorisprovidedforsynchromotorstartingtouseandwipe-outrun-timeatthesametimeamidsparkbecauseofloadingtochangeofoutofsteposc.Startthedamperwindingintheprocesstoincisethemagneticfieldofstatorrevolutionbutinducedverybigstartingcurrentinthesynchromotor,sothebigcurrentbyallmeanswillresultindampinghairthermalexpansion,underthenormalconditionbecauseofstartingtimeshort,thedamperwindingstartingisbehindsoonwillcooloff,butblockuprevolutioninthemotor,lackphase,startthesuper-intimetolengthwayswaitaconditiondown,ifdon'tshutdownintime,willresultinthedampingtakeoffsolderingtosplitetc.condition.Thedamperwindingisweakerlinkinthesynchromotorparts,thedamperwindingfamiliarfaulthas:

Thedampingtakesoffsolderingandsplit,thedampingringdischargeswildfire,dampingringthestrainisserious.Thesefaultswilleffectthestartingofsynchromotor.Thedampingtakesoffsolderingandchoosessilveractiniumweldingrodandadoptsoxyacetyleneweldingtoweld,thedynamoaftertakingoutthecoreheatsintorotor200Celsiusdegreessetrotorverticalintheoven,aftertakingoutandadopt750Celsiusdegreestoorsolyweldtemperature,dampingandtheblindsideofofdampingringcompletesolderingsarefull,clearasolderingdirtagain,;Forsplitofthedamping,afterdismantlingoriginaldamping,choosethematerialofmaterialhomologyandadopttheabove-mentionedmethodtoweldafterpackinggooddamping.Dampingringthewildfireismainlywhatdampingringindirectlytouchesbadorgetintouchwithareaisn'tenoughtoresultin.Dampingringthestrainseriouslyismainlyadampingtofixanticoincidenceintheslot,thedampingplugsintodampingringwhileweldingholefalsely,appearadditionalstressafterwelding,atplusdampingringintensitynotenoughto,treatmentislooseopenallconnectivityboltsofdampingrings,vsstrainantibigofdampingring,afteroxyacetyleneweldingheatingadjustwiththeexclusiveusefixtureeven,vsstrainseriousreplaceanewdampingofring.

2-Thesolidinstanceisanalytical

Solidinstance1asynchromotoradoptnonsynchronousstartinglaw,investLimagnetoelectricitystreamingpost-buthardleadlongintosynchronization.

Aimattheabove-mentionedcondition,haltafter,checkfirstwhetherpowersupplyvoltageisnormal,thenmakeuseofmultimeterandoscillographvstheLimagneticbeltdevicescrutiny,theLimagnetoelectricitypresses,whethercurrentisnormal,endisdoubtashort-circuitofthewindingofLimagneticbeltto,.Presstheprecedingparagraphsthemethodforgiving,canopenintolow-tensionintherotorderivationon-line（about30Vs），putonthemagnetic