开关电源毕业论文外文翻译.docx

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1、2捻理二号班JIANGSUuniversityoftechno1.ogy本科毕业设计（论文）中英文翻译学院名称：电气信息工程学院专业：电气工程与其白动化班级：学号：姓名：指导老师姓名：指导老师职称：二O一四年六月开关电源毕业生文外文翻译外文资料(原文)Ifode1.ing,Sinu1.ation,andReductionofConductedE1.ectroaagneticInterferenceDuetoaPWMBuckTypeSwitchingPowerSupp1.yI.FarhadiAbstract:Undesiredgenerationofradiatedorconductedener

2、gyine1.ectrica1.systemsisca1.1.edE1.ectromagneticInterference(EMI).Highspeedswitchingfrequencyinpowere1.ectronicsconvertersespecia1.1.yinswitchingpowersupp1.iesimprovesefficiencybut1.eadstoEMI.Differentkindofconductedinterference,EM1.regu1.ationsandconductedEMImeasurementareintroducedinthispaper.Com

3、p1.iancywithnationa1.orinterna1.iona1.regu1.ationisca1.1.edE1.ectromagneticCompatibi1.ity(EMC).Powere1.ectronicsystemsproducersmustregardEMC.Mode1.ingandsimu1.ationisthefirststepofEMCeva1.uation.EMIsimu1.ationresu1.tsduetoaPWMBucktypeswitchingpowersupp1.yarepresentedinthispaper.ToimproveEMC,sometech

4、niquesareintroducedandtheireffectivenessprovedbysimu1.ation.IndexTerrasiConducted,EMC,EMI,1.ISN,SwitchingSupp1.yI. INTRODUCTIONFASTsemiconductorsmakeitpossib1.etohavehighspeedandhighfrequencyswitchinginpowere1.ectronics忆Uighspeedswitchingcausesweightandvo1.umereductionofequipment,butsomeunwantedeffe

5、ctssuchasradiofrequencyinterferenceappeared.Comp1.iancewithe1.ectromagneticcompatibi1.ity(EMC)regu1.ationsisnecessaryforproducerstopresenttheirproductstothemarkets.ItisimportanttotakeEMCaspectsa1.readyindesignphase国.Mode1.ingandsimu1.ationisthemosteffectivetoo1.toana1.yzeEMCconsiderationbeforedeve1.

6、opingtheproducts.A1.otofthepreviousstudiesconcernedthe1.owfrequencyana1.ysisofpowere1.ectronicscomponents国.Differenttypesofpowere1.ectronicsconvertersarecapab1.etobeconsideredassourceofEMI.Theycou1.dpropagatetheEMIinbothradiatedandconductedforms.1.ineImpedanceStabi1.izationNetwork(1.ISN)isrequiredfo

7、rmeasurementandca1.cu1.ationofconductedinterference1.eve1.Interferencespectrumattheoutputof1.ISNisintroducedastheEMCeva1.uationcriterion网.Nationa1.orinternationa1.regu1.ationsarethereferencesfortheeva1.uationofequipmentinpointofviewofEMC团.II. SOURCE,PATOANDVICTIMOFEMIUndesiredvo1.tageorcurrentisca1.

8、1.edinterferenceandtheircauseisca1.1.edinterferencesource.Inthispaperahigh-speedswitchingpowersupp1.yisthesourceofinterference.Interferencepropagatedbyradiationinareaaroundofaninterferencesourceorbyconductionthroughcommoncab1.ingorwiringconnections.Inthisstudyconductedemissionisconsideredon1.y.Equip

9、mentsuchascomputers,receivers,amp1.ifiers,industria1.contro1.1.ers,etcthatareexposedIointerferencecorruptionareca1.1.edvictims.Thecommonconnectionsofe1.ements,source1.inesandcab1.ingprovidepathsforconductednoiseorinterference.E1.ectromagneticconductedinterferencehastwocomponentsasdifferentia1.modean

10、dCOmmonmode”.A. Differentia1.modeconductedinterferenceFig.1Differentia1.modeconductedUiterferencepathThismodeisre1.atedtothenoisethatisimposedbetweendifferent1.inesofatestcircuitbyanoisesource.Re1.atedcurrentpathisshowninFig.1.Theinterferencesource,pathimpedances,differentia1.modecurrentand1.oadimpe

11、dancearea1.soshowninFig.1.B. CommonmodeconductedinterferenceCommonmodenoiseorinterferencecou1.dappearandimposebetweenthe1.ines,cab1.esorconnectionsandcommonground.Any1.eakagecurrentbetween1.oadandcommongroundcou1.dbemode1.edbyinterferencevo1.tagesource.Fig.2demonstrates1.hecommonmodeinterferencesour

12、ce,commonmodecurrents1.rand,andthere1.atedcurrentpaths*9.Thepowere1.ectronicsconvertersperformasnoisesourcebetween1inesofthespp1ynetwork.Inthisstudydifferentia1.modeofconductedinterferenceisparticu1.ar1.yimportantanddiscussionwi11becontinuedconsideringthismodeon1.y.III.E1.ECTROMAGNETICCOMPATIBI1.ITY

13、REGU1.ATIONS,App1.icationofe1.ectrica1.equipmentespecia1.1.ystaticpowere1.ectronicconvertersindifferentequipmentisincreasingmoreandmore.smentionedbefore,powere1.ectronicsconvertersareconsideredasanimportantsourceofe1.ectromagneticinterferenceandhavecorruptingeffectsonthee1.ectricnetworksHigh1.eve1.o

14、fpo1.Iu1.ionresu1.tingfromvariousdisturbancesreducesthequa1.ityofpowerine1.ectricnetworks.Ontheothersidesomeresidentia1.,commercia1.andespecia1.1.ymedica1.consumersaresosensitivetopowersystemdisturbancesinc1.udingvo1.tageandfrequencyvariations.Thebestso1.utiontoreducecorruptionandimprovepowerqua1.it

15、yiscomp1.yingnationa1.orinternationa1.EMCregu1.ations.CISPR,IECfCCandVDEareamongthemostfamousorganizationsfromEurope,USAandGermanywhoareresponsib1.efordeterminingandpub1.ishingthemostimportantEMCregu1.ations.IECandVDErequirementand1.imitationsonconductedemissionareshowninFig.3andFig.4.Fordifferentgr

16、oupsofconsumersdifferentc1.assesofregu1.ationscou1.dbecomp1.ied.C1.assAforcon11orconsumersandc1.assBwithmorehard1.imitationsforspecia1.consumersareseparatedinFig.3andFig.4.Frequencyrangeof1imitationisdifferentforIECandVDEthatare150kHzupto30MHzand10kHzupto30MHzrespective1.y.Comp1.ianceofregu1.ationsiseva1.uatedbycomparisonofmeasuredorca1.cu1.atedconductedinterference1.eve1.inthementionedfrequencyrange