电磁干扰开关电源论文中英文对照资料外文翻译文献Word文档下载推荐.docx

电磁干扰开关电源论文中英文对照资料外文翻译文献Word文档下载推荐.docx

《电磁干扰开关电源论文中英文对照资料外文翻译文献Word文档下载推荐.docx》由会员分享，可在线阅读，更多相关《电磁干扰开关电源论文中英文对照资料外文翻译文献Word文档下载推荐.docx（16页珍藏版）》请在冰豆网上搜索。

Modeling,Simulation,andReductionofConductedElectromagneticInterferenceDuetoaPWMBuckTypeSwitchingPowerSupplyI

Abstract:

UndesiredgenerationofradiatedorconductedenergyinelectricalsystemsiscalledElectromagneticInterference（EMI）.High

speedswitchingfrequencyinpowerelectronicsconvertersespeciallyinswitchingpowersuppliesimprovesefficiencybutleadstoEMI.Differentkindofconductedinterference,EMIregulationsandconductedEMImeasurementareintroducedinthispaper.CompliancywithnationalorinternationalregulationiscalledElectromagneticCompatibility（EMC）.PowerelectronicsystemsproducersmustregardEMC.ModelingandsimulationisthefirststepofEMCevaluation.EMIsimulationresultsduetoaPWMBucktypeswitchingpowersupplyarepresentedinthispaper.ToimproveEMC,sometechniquesareintroducedandtheireffectiveness

第16页共13页

中英文翻译

provedbysimulation.

IndexTerms:

Conducted,EMC,EMI,LISN,SwitchingSupply

I.INTRODUCTION

FASTsemiconductorsmakeitpossibletohavehighspeedandhighfrequencyswitchinginpowerelectronics 1.Highspeedswitchingcausesweightandvolumereductionofequipment,butsomeunwantedeffectssuchasradiofrequencyinterferenceappeared 2.Compliancewithelectromagneticcompatibility（EMC）regulationsisnecessaryforproducerstopresenttheirproductstothemarkets.ItisimportanttotakeEMCaspectsalreadyindesignphase 3.ModelingandsimulationisthemosteffectivetooltoanalyzeEMCconsiderationbeforedevelopingtheproducts.Alotofthepreviousstudiesconcernedthelowfrequencyanalysisofpowerelectronicscomponents 45.DifferenttypesofpowerelectronicsconvertersarecapabletobeconsideredassourceofEMI.TheycouldpropagatetheEMIinbothradiatedandconductedforms.Line Impedance Stabilization Network （LISN） is required formeasurement and calculation of conducted interference level 6.InterferencespectrumattheoutputofLISNisintroducedastheEMCevaluationcriterion 78.Nationalorinternationalregulationsarethe

referencesfortheevaluationofequipmentinpointofviewofEMC 78.

II.SOURCE,PATHANDVICTIMOFEMI

Undesiredvoltageorcurrentiscalledinterferenceandtheircauseis

calledinterferencesource.Inthispaperahigh-speedswitchingpowersupplyisthesourceofinterference.

Interference propagated by radiation in area around of aninterferencesourceorbyconductionthroughcommoncablingorwiringconnections.Inthisstudyconductedemissionisconsidered only.Equipmentsuchascomputers,receivers,amplifiers,industrialcontrollers,etcthatareexposedtointerferencecorruptionarecalledvictims.Thecommonconnectionsofelements,sourcelinesandcablingprovidepathsfor conducted noise or interference. Electromagnetic conductedinterferencehastwocomponentsasdifferentialmodeandcommonmode9.

A.Differentialmodeconductedinterference

Thismodeisrelatedtothenoisethatisimposedbetweendifferentlinesofatestcircuitbyanoisesource.Relatedcurrentpathisshownin

Fig.1 9.Theinterferencesource,pathimpedances,differentialmodecurrentandloadimpedancearealsoshowninFig.1.

B.Commonmodeconductedinterference

Commonmodenoiseorinterferencecouldappearandimposebetweenthelines,cablesorconnectionsandcommonground.Anyleakagecurrentbetweenloadandcommongroundcouldbemodeledbyinterferencevoltagesource.

cm1 cm2

Fig.2demonstratesthecommonmodeinterferencesource,commonmodecurrentsI andI andtherelatedcurrentpaths9.Thepower

electronicsconvertersperformasnoisesourcebetweenlinesofthesupplynetwork.Inthisstudydifferentialmodeofconductedinterferenceisparticularlyimportantanddiscussionwillbecontinuedconsideringthismodeonly.

III.ELECTROMAGNETICCOMPATIBILITY

REGULATIONS

Application of electrical equipment especially static powerelectronicconvertersindifferentequipmentisincreasingmoreandmore.Asmentionedbefore,powerelectronicsconvertersareconsideredasanimportantsourceofelectromagneticinterferenceandhavecorruptingeffectsontheelectricnetworks 2.Highlevelofpollutionresultingfromvariousdisturbancesreducesthequalityofpowerinelectricnetworks.Ontheothersidesomeresidential,commercialandespeciallymedicalconsumersaresosensitivetopowersystemdisturbancesincludingvoltageandfrequencyvariations.ThebestsolutiontoreducecorruptionandimprovepowerqualityiscomplyingnationalorinternationalEMCregulations.CISPR,IEC,FCCandVDEareamongthemostfamousorganizationsfromEurope,USAandGermanywhoareresponsiblefordeterminingandpublishingthemostimportantEMCregulations.IECa