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1、滨州学院本科毕业设计(外文翻译)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3滨州学院本科毕业设计(外文翻译)Alwaysmagneticbeltsynchromotordirecttorquecontrolsystem0-prefaceSynchromotorbecauseofhavingpowerfactorhigher-,run-timeefficiencyhigher-,stabilitygood,the
2、revolvingspeedHengsettlestowaitamerit,isextensivelybeenappliedtoindustrialproductionamid.Thestartingfaultthatacquaintswithsynchromotor,anddebuggingintime,allhaveimportantmeaningtothemotorandtheproductionsystemses.Bywayofenergyintime,accuratedebuggingan
3、dtransactionfault,havetovsthefamiliarfaultprogressofthesynchromotorindetailanalytical!1-Familiarfault1.1-ThesynchromotorafterswitchingonelectricitytheincapabilitystartsThesynchromotorafterstartingtheincapabilityrun-timegenerallyhasthereasonofseveralsas
4、follows:(1)Powersupplyvoltageoverlow.Becauseatthesquareofvoltage,thestartingtorquedirectproportionofsynchromotor'sthevoltageofpowersupplyovermakelowthestartingtorqueofsynchromotorsignificantlythedroopislowerthanloadtroque,cannotstartthusandwanttoraisev
5、sthispowersupplyvoltagetoenlargethestartingtorqueofdynamo.(2)Thefaultofmotor.Checkmotorsettle,therotorwindinghadnoshortcircuit,opencirctui,opensolderingandlinkbadetc.fault,thesethefaultswillmakethedynamocannotstarttocreatestartingofratingofintensityofm
6、agneticfield,makethusthedynamocannotstart;Checkingthemotorbearinghasalreadyhadnofailure,theportcaphashavenoloose,ifbearingfailureportshroudloose,3滨州学院本科毕业设计(外文翻译)resultinbearing'sdownsinking,mutuallyrubwithstatorironcore,resultinthusdynamo'scanningnots
7、tart,vssettletherotorfaultcanbeshakentablewiththelowtension,graduallyclicktochecktoseekafaultconditionandadopthomologoustreatment;Thecountersgaftacceptsandcarriestoshroudalooseconditionandallwantsapancarbeforedrivingeachtimeandseesmotorrotorwhetherslew
8、ingisvivid,ifbearingorshaftkiowattdamageandreplaceintime.(1)Thecontroldevicebreaksdown.Thiskindoffaultsaremostlythed.c.outputvoltageofthewindingsofLimagneticbelttoadjustnotappropriateordon'toutput,resultinthestatorcurrentofmotoroverbig,
