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

Alwａyｓmagneｔｉc　belt　sｙnｃｈromotｏrｄireｃｔ　tｏrqueｃｏnｔrolsyｓｔem

0-pｒeface

Synｃｈrｏｍｏｔorbｅｃauseof　havinｇpoｗer　factoｒ　ｈｉgher-，ruｎ　—　tｉｍeｅffｉciencｙhigher　—,sｔabｉlitｙｇｏoｄ，　the　ｒevolvingｓpｅedHengｓettleｓtowaitａmeriｔ,isextensivelybeｅnappｌiedｔoiｎduｓtｒialｐrｏductiｏnamid。

Ｔｈｅstartingfaultｔｈａtacqｕaintswithsynchromotoｒ,anｄdeｂｕｇgiｎgintime，alｌ　ｈａveｉmportａnｔ　meaningｔo　ｔheｍｏtorandthepｒｏdｕcｔionsysｔemseｓ.Ｂy　wａyｏfenergy　intｉｍe，accｕｒateｄebuｇgingａndtrａnｓａctionfauｌt，havｅｔovsthefａmiliａrｆａｕltprｏgresｓ　oftｈesyｎchｒomotor　indetaｉlanalytｉcal！

1—　Ｆａｍiliarfａuｌt

1。

1—Tｈe　syncｈｒomｏｔoｒａｆterswitching　ｏn　ｅlｅｃtricitytheincａpaｂiliｔyｓtarts

　Ｔhe　synchromoｔoraｆtｅrstarｔingｔheinｃapａbｉｌｉtyrun—timｅgenｅraｌlyhas　tｈereasonoｆseｖｅraｌsasfolｌows:

（1）Powｅrsuppｌyvoltａgeｏvｅrｌow．Bｅｃaｕseａtthesquarｅoｆ　voltage，　the　staｒtｉｎgtorｑue　directprｏｐｏｒtioｎ　oｆ　ｓyｎchromotｏr'sｔｈeｖoltａｇｅｏfpｏwerｓuｐｐly　ovｅrmake　ｌow　tｈeｓtartｉngtorｑuｅofｓynchrｏｍotorsignificantｌy　theｄrｏop　islowｅr　ｔｈａnloａｄｔｒｏｑue,　canｎｏt　starttｈusaｎdwanｔtoraiｓeｖsthiｓpoweｒsｕｐplｙvoltagｅｔo　enlarge　ｔhｅstartｉngtｏrｑuｅofdｙｎａmｏ.

（2）Thefaulｔ　oｆmotor。

Ｃｈeｃｋmｏtoｒ　sｅｔtｌｅ,tｈeｒｏｔoｒ　ｗｉｎdinｇhadnoshｏrｔ　circuit,opencｉrctｕi,openｓolderingaｎdlinkbaｄｅtｃ.ｆaｕｌｔ,these　ｔhefaultｓ　ｗｉll　maketheｄyｎａmｏ　cａnnotｓtaｒtto　createsｔａｒtiｎgofｒatingｏfintensiｔｙoｆｍagnetiｃｆｉｅld，ｍaｋethustheｄynamoｃａｎｎotｓｔart；Checkingtｈe　motorｂeａrｉnghａsalrｅａｄyhａdnofaｉlｕre,ｔheportcap　haｓhaｖe　noloｏse,ｉfbeａｒing　ｆailureporｔshｒoｕdloosｅ，resuｌtinbearｉｎg's　doｗｎsｉｎkiｎｇ，ｍutuａlly　ruｂ　witｈ　statｏｒiron　core，rｅsulｔ　inｔhusdyｎamｏ＇ｓcaｎning　nｏtｓtarｔ，vｓsetｔｌetｈeｒotｏｒfａult　can　beshaｋentablewitｈtheloｗ　tｅｎsｉon，graduａｌly　clickｔocheck　toseeｋafaｕｌtｃonditionandadopt　homoloｇｏustreatmｅnt；Ｔｈｅcounterｓgａft　ａcceptsand　caｒriｅsｔoshrｏudaloose　condiｔｉoｎ　andallｗantsapancarｂeforｅｄrｉｖiｎgeach　ｔｉｍe　ａnｄｓeｅsｍotorrｏｔｏrwhetｈerｓlewｉｎｇｉs　vｉvid,　iｆbeａｒｉngorｓｈaftkｉowaｔtdａmａｇeandｒeplaceintime.

（3）Thｅ　controldevice　breaksdoｗn．Thiskｉｎdoffaults　ａremostlythｅ　d．c.ｏutpuｔ　voltａgeｏｆ　thewiｎdingsｏｆLｉｍagneticbeｌttoadjuｓtｎｏt　appropriateｏr　dｏn’t　ｏutpuｔ，ｒｅsuｌｔin　tｈｅstaｔor　ｃurｒｅｎｔ　ｏｆ　ｍｏtoｒｏver　ｂｉｇ,cauｓetｈeｍotoｒｃｏnducｔelecｔriｃiｔy　ｔｈｅｒun　makeorｔｈelosｉng　ofｄynamｏmagneｔｉcbｅltrｕｎ—tｉme.SｈｏuldchecｋwhetｈerｏｕｔｐuｔvｏltageｃurｒentanditｓwaｖeｆｏrmtｈatｔheLi　magnｅticｂｅlteｑuiｐsｉs　noｒmalａt　thistiｍｅ，thｅRongbrｅaks　ｗhetｈerｔheｍａchiｎeRonｇ　breaks,　theconｔaｃtis　bad；Ｗhｅtheｒcｉrｃuitboardplug-ｉnputspｒｉsoｎｏr　alignment;Chｅckｌoｏｐrｅsistance,puｔoutwhethercｒystaｌ　ｇaｔeｔube　ofmagnet　burnｓｏut　or　brokesthroｕｇh。

（4）Mｅｃhanicaltｒoｕｂle。

Sｕchas　ｂｅdraggedａlｏng　adynamic　maｃｈinerytoｂloｃｋ，　rｅsultinmotorｉncａpaｂiliｔy＇sstarｔinｇ,ｔheｒoｔorthａtmoves　motoｒin　responsetoｔhepａnattｈistｉmeseeｓwhｅtｈerthe　ｓlewinｇ　ｉsvivｉd,machineryburdenwｈetherexｉｓtｅncｅfault

1.2—　Thesｙnｃhｒo　motorinｃapabiliｔyleadｓｌongｉｎtosynchrｏｎizａtioｎ.

　Synｃhromotorincoｍmｏｎuselawoｆnonsynchronousstarting,ｔhrｏｗin　Ｌi　ｍａｇnｅｔicbelｔwhen　theｍｏｔorroｔorｒevoｌｖｉｎｇｓpeｅdhｉtsｓｙnchrｏnous　rｅvolｖingspeedｏf95％,　mａkeitleadｓ　lｏnｇｉｎtosynchroniｚatiｏn.Ｔｈeｓyｎcｈromotoｒ　iｎｃapabiliｔｙleａds　lonｇｉnto　sｙnｃhronｏusｒeasonasｆolｌｏwｓ:

（1）ThｅLimaｇnetic　belt　wｉnｄingshｏrtciｒcｕit.Becaｕseｔhewindiｎg　of　Ｌiｍaｇneticｂeｌｔ,existence　sｈorｔ　ciｒcuｉtbreａkｓ　down，asa　ｒeｓultｍakｅsmotorabletostａbｉlizeruｎ-timｅbｕtinｃapaｂｉlityandｌeadloｎｇ　ｉnｔｏsyｎｃｈｒonization　ｗhｉlｅbeinｇｌｏwer　thaｎsynｃｈrｏｎｏusrevolvingｓpｅed.Checｋtosｅekｔhｅ　Liｍａgｎeｔｉｃbｅlt　wiｎdingshorｔｃircuｉｔ,canｏpenintolow-　ｔeｎｓiｏn（abｏｕttｈe３0　Vs）intherotordeｒivatioｎon—　liｎe，ｐutonｔhｅ　magnｅticpolessurｆacｅｗｉtｈ　aｈanｄworｋ　sｔeelsaｗ，　puｒｓueinｓpectｉoｎｍagｎetiｃpoles，ifvibratingisviｏlent，explaiｎtｈｅ　ｍagneticpoleｓto　havｅnosｈｏrtｃircuiｔ　on　stｅｅl　ｓawofｔhemagｎetｉcpoles'ｓｕrface，ifthｅvibrａtingｏf　ｓawblademicrｏordon’ｔ　flaｐ，　eｘplainthemagnetic　pｏleｓsｈoｒｔcircuit．Ａfｔeｒunloadinｇｔｈe　magnｅticpｏｌes,cheｃktｈe　ｆauｌt　tocｌｉck，　is　sｈｏrt—circuit　ｄeｇree，ａdopt　ｌocalto　menｄ　orre－ｒｏundtomａｋe.

（2）Powersuｐｐｌyvｏltageｏverｌow。

Powerｓuppｌｙvolｔageovｅrlow,reｓulｔin　ｔhestronｇLi　link　oftｈedｅｖicｅofLimagneticbelｔincａｐaｂility　worｋinｇ,　makethｅ　motorincapａｂｉｌｉtyleaｄlongiｎto　ｓｙｎchroｎｉｚaｔｉonthus,theｃoncrｅtｅwaｙ　istoraiｓｅpｏｗersupplｙvoltagｅapprｏpriatelｙ.

（3）Ｔhefaｕltof　Lｉｍaｇｎeｔｉｃ　bｅlt　device。

Sucｈas　thrｏwLi　ｏｖｅrspeｅdy（nameｌy　throw　in　Limagｎｅticbelt,moｔoｒｒotorｒevoｌvingｓpeedoverlow），wiｌｌｍａketｈe　motor　cａｎnotleａdlongｉｎtosyｎchｒonizａtioｎ,ｓｈouldchecktothｒoｗ　iftheＬｉlinkexistsfaultaｔｔhｉｓｔimｅ。

IfLｉmaｇｎeｔiｃ　belｔdeｖｉcefaｕlt,ｔｈe　outpuｔ’scｕrrｅnｔｉs　loｗerthan　ａrating　vaｌue，causethｅｅleｃtｒｉcitymagneｔicｔroqueofdｙnamoｏversmall　butcaｎｎoｔlead　longintosynchｒonｉzation,at　ｔｈistimeｉnresｐｏnsetoｓcrｕtｉｎyLｉｍagnｅｔic　bｅlｔ　dｅviｃeoftｈｒowLilｉnk　andｐhａsｅ-ｓhiｆｔinglinｋ,ｗａｖeform　useosｃillｏgｒaphtｏ　ｃhecｋ　totｈrowLilinkaｎｄphaｓｅ　－ｓhｉftingliｎk,　shouldalsocheckand　putoutmagneticbeｌｔlｉnkaｎdputoｕtcrystａlgａte　ofｍaｇneｔicbeltwhetｈｅrtubediscovｅrsaqｕestｉonａsuｓual,handle　intime,ｉｆ　ｔheｉncapａｂilityｈａnｄlｅs　ｉnｔiｍe，　bywayoftheenerｇyquicｋｌyreｓｔoreｃapacｉty，　shｏｕldｒepｌａce　toprovide　foｒ　ｕｓe　ｃｉｒｃuiｔboａｒｄ.

1。

3-Ｂrushandcｏmpresｓtightlyspringand　ｇatｈerｔogiｖｅｏrgetanelectric　shockrinｇ　faulｔ.

Theｂrush　ｌeadsshｏrtandcoｍpresses　tightlyｓｐringpreｓｓsｃａｒciｔyａndmakeｂrushａndgathｅｒ　tｏgiｖe　orgｅtanelecｔrｉcshoｃkriｎg　ofiｎdｉrecｔlytouchｂadly，ｔhusｇeｎeraｔｅsparｋoｒａｒｃelｅｃtｒic，arcelectric　orsparｋ　toontheother　handａndeasｉｌyspａrk　shｏrｔcircuit,ｗｉlｌmakｅarcｅleｃｔricbｕrn　ｏｎtheothｅｒ　handshortｅr，　spａｒkoｐenｃｉrctuｉthus,resultiｎＬｉ　maｇneticbeltdevicｅonly　the　Li　magneｔoelectｒiｃitｙpressbuthaｖｅ　ｎoLi　magnetoelectrｉcitystrｅaming；Cｏｍpress　ｔiｇｈtlyspringageｉnglapse,maｋｅbrｕｓhaｎdgaｔherｔogiｖe　oｒgeｔ　an　ｅlecｔｒicｓｈoｃkrinｇｏfindiｒecｔlｙｔouchbadly,eｆfｅｃtthesｔaｒting　ofmotorthｕs；Gａthertogｉveoｒｇetａneｌｅctrｉｃｓhｏcｋa　rｉngｓurfaｃeto　ｔhere　isgreasｅsｔainａnｄ　scａｒｏr　ｓloｔscａｒ，willmakebrushａnd　gatｈertogｉveorｇetanｅlｅctricｓhｏckｒｉｎｇｏfindｉｒｅctlytouchbaｄｌy,　ｇenｅratｅｓｐａｒk,　sparkfuｒtｈｅr　ｂｕｒｎ　gathertogivｅorｇｅtanelecｔricshock　rｉng，will　alsomakｅgnｄ　ｓhoｒt-ciｒcuit，tｈespaｒｋeffects　the　startinｇｏｆmoｔorｔｈus.Ｆｏｒｇaｔhｅr　toｇiveorｇeｔanelectrｉcshoｃkrｉｎgｓuｐｅrfiｃialgreasesｔａin，canwipｅ　ｔocleanwiｔhthe　aceｔｏnｅ；Ｆoｒthiｎtｒace，　usemanyfeｔtle　shaggingｒｉｎgｓof　sａｎdｐaperssuｒface，iｓ　ringｓｕrfａce　rougｈnesｓtohｉt　Ｒ1。

6　ｕｍs，　ｉfｔhｅ　sloｔ　scarobvioｕslｙnｅeds　ｔogetｏnthe　caｒｂeｄ　tｒaｎsform,truning,enteramoｕnt　ofｋｎiｆｅｔotaｋeｅvｅrｙｔime1mmａs　proper，inｔhe1－1.5ｍs/s,tｈｅtrｕｎingspeedｃonｔrol'sroughneｓs　hits　oftｈe　ｕmsof　R1。

5－1。

8　ａnd　becomeｓ　badanti　tｏ　finallｙｐolishwiththesandｐａpｅｒ2－3timｅs　overｔhe０.05ｍms。

1．4—The　dａmpｅｒｗｉｎdingbｒｅaｋｓｄｏwn．

Ｔhedａmpｅr　ｗiｎding　oｆsynchrｏ　mｏtorｒｏtor　is　providｅdｆoｒsynchromｏtorstartｉｎgtｏuseanｄwipe—out　ｒun—　timｅat　ｔhe　saｍｅtimeaｍidｓpａrkｂecauｓeofloａding　ｔo　chａngeｏfｏutｏｆ　sｔeｐosｃ．Startthedａｍｐerwiｎdinｇintheprｏcｅsｓ　toincｉｓeｔhｅmａgneticfieldoｆstatorrｅvoｌｕｔionbｕｔinｄuｃedverybiｇstａｒting　ｃｕrｒenｔin　thｅ　ｓynｃhrｏ　mｏtｏr，　so　thebigcｕrreｎtbyaｌｌmeａnswｉll　resultiｎdampinｇ　hａｉrtｈermaleｘpanｓiｏn，underthe　nｏｒｍａｌｃonditioｎbecauｓeｏfstａｒtinｇtiｍeshoｒt，　thedamper　windinｇｓtaｒtinｇｉs　behｉnｄsoonｗilｌｃoｏloff,　ｂutｂlockuｐrevolution　inthemotor，lａckｐhase，startｔhesuｐｅｒ　—in　ｔime　to　ｌenｇｔhways　wait　aｃonditiｏn　dｏwn，　ifdｏn＇tｓｈｕtｄownｉnｔime，wiｌlｒｅsｕlｔinthｅｄaｍｐingｔaｋeoffsoldｅringｔo　splｉtetｃ。

ｃoｎdiｔion.Tｈe　dａmpｅrｗinｄｉnｇｉsweaker　ｌiｎｋinthｅ　sｙｎｃhｒomotorpartｓ，thedamper　winｄingfamiｌiarfaulｔ　haｓ：

Tｈｅ　daｍpiｎgtａｋeｓoｆfｓoｌdering　andspliｔ，ｔhe　ｄamｐinｇriｎg　dischａrgｅsｗildfire，ｄampingriｎg　thestrainis　ｓeriｏｕs．These　faultsｗilleffectthe　staｒｔiｎgofｓyｎcｈｒoｍotor.Ｔhe　dampｉngtａkes　ｏfｆ　sｏlderiｎgａｎdchoosessilvｅractｉniumwｅlding　rodaｎdａdｏpts　oxyａcetyｌenｅwelｄingtoweld,thedｙnamoａfｔｅｒｔakingoｕtｔhｅｃore　ｈeats　ｉnｔo　roｔor２0０Celsｉuｓ　ｄeｇrees　set　ｒｏtorvertｉｃalｉn　the　ｏven，aftertaｋｉnｇouｔandａｄopt750Celsiｕsdｅgreｅs　ｔoorｓoly　ｗeｌｄ　temperａtuｒe,dampiｎg　ａnｄ　thｅblｉndsｉdeｏfofdａｍpｉngｒｉnｇｃompleｔeｓｏldｅringsａrefｕll，clearａ　soldｅrinｇdｉrｔ　ａgain，;Fｏr　sｐliｔofｔheｄamｐinｇ，afterdismantｌingoriginaｌ　daｍpｉng，chooｓetｈｅmaterialof　materｉalhoｍology　andaｄｏｐttheaboｖe－mｅntiｏneｄmethod　ｔoｗeｌｄaftｅr　pacｋｉnｇgooddａmping。

Ｄampｉｎgringthewiｌdfｉrｅis　ｍaiｎlywhａｔdaｍｐingrinｇinｄirecｔlytｏuchｅs　bad　oｒgetｉntouch　ｗiｔhareaisn'tenoughto　result　iｎ.　Daｍping　ring　tｈestraｉnseriｏｕslyismainｌyadaｍping　tofｉｘａnｔｉcｏincidenｃein　thesｌot,thedaｍｐinｇｐlｕｇsintodａmpingrinｇ　whｉlewｅldinghoｌefａlsely,apｐearaddiｔional　strｅsｓaftｅrｗｅldinｇ，ａtｐlｕsｄａmｐinｇ　ｒｉngintｅnｓity　ｎoｔenougｈ　to，　treatmentiｓloosｅopenａｌlconnectiｖitｙbｏltsofdａmｐing　rinｇs，　vsstrａｉn　aｎtiｂｉgofdampｉngriｎg，aftｅｒoxｙａcetｙlene　wｅｌｄinghｅaｔingadjustｗｉｔhtheexｃlｕsiveusｅ　fixtureeven,　vsｓtraｉｎseｒiｏuｓrｅpｌacea　new　damｐing　ofring。

２　—Theｓolid　instanｃｅiｓ　ａnalｙｔiｃal

Sｏlidinstance1ａsｙnchｒomotorａdoｐｔ　noｎsｙnchronousｓtａrtｉnglａw,iｎvestＬimaｇｎｅtoelectricｉtystreamingpost　－buthardｌeaｄlｏnginｔosyｎcｈroｎiｚatiｏｎ．

Aim　atthe　ａbove—mentiｏnedcondition,haｌｔ　ａftｅr，cheｃkｆiｒｓtwhetherpｏｗeｒsupｐlｙｖｏｌｔage　ｉｓnorｍａl，　theｎ　ｍakｅｕse　oｆmｕltｉmｅｔerandoscilloｇraｐｈvstｈeLｉmagｎeｔic　beltdｅｖicｅ　scrutiny，theLi　mａｇneｔoelectｒiciｔypｒeｓseｓ，wheｔhｅrcurｒent　ｉsnｏrmａl，endisdoｕbt　aｓhoｒｔ-ｃiｒcｕｉｔofｔｈewinｄｉnｇof　Lｉｍagｎeticbeltｔo,．Pｒｅｓｓ　ｔheprｅcｅding　ｐaｒａgraｐhｓtｈeｍeｔhodforgiｖｉnｇ,　caｎopeniｎｔolow　—tensioninｔherｏtor