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ID:236270
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页数:21页
时间:2017-07-11
《基于压降型PWM开关电源的建模、仿真和减少传导性电磁干扰--外文翻译》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、Modeling,Simulation,andReductionofConductedElectromagneticInterferenceDuetoaPWMBuckTypeSwitchingPowerSupplyA.Farhadihttp://10.11.248.20:8000/rewriter/EIAbstract:UndesiredgenerationofradiatedorconductedenergyinelectricalsystemsiscalledElectromagneticInterference(EMI).Highspee
2、dswitchingfrequencyinpowerelectronicsconvertersespeciallyinswitchingpowersuppliesimprovesefficiencybutleadstoEMI.Differentkindofconductedinterference,EMIregulationsandconductedEMImeasurementareintroducedinthispaper.CompliancywithnationalorinternationalregulationiscalledElect
3、romagneticCompatibility(EMC).PowerelectronicsystemsproducersmustregardEMC.ModelingandsimulationisthefirststepofEMCevaluation.EMIsimulationresultsduetoaPWMBucktypeswitchingpowersupplyarepresentedinthispaper.ToimproveEMC,sometechniquesareintroducedandtheireffectivenessprovedby
4、simulation.IndexTerms:Conducted,EMC,EMI,LISN,SwitchingSupplyI.INTRODUCTIONFASTsemiconductorsmakeitpossibletohavehighspeedandhighfrequencyswitchinginpowerelectronics.Highspeedswitchingcausesweightandvolumereductionofequipment,butsomeunwantedeffectssuchasradiofrequencyinterfer
5、enceappeared.Compliancewithelectromagneticcompatibility(EMC)regulationsisnecessaryforproducerstopresenttheirproductstothemarkets.ItisimportanttotakeEMCaspectsalreadyindesignphase.ModelingandsimulationisthemosteffectivetooltoanalyzeEMCconsiderationbeforedevelopingtheproducts.
6、Alotofthepreviousstudiesconcernedthelowfrequencyanalysisofpowerelectronicscomponents.DifferenttypesofpowerelectronicsconvertersarecapabletobeconsideredassourceofEMI.TheycouldpropagatetheEMIinbothradiatedandconductedforms.LineImpedanceStabilizationNetwork(LISN)isrequiredforme
7、asurementandcalculationofconductedinterferencelevel.InterferencespectrumattheoutputofLISNisintroducedastheEMCevaluationcriterion.NationalorinternationalregulationsarethereferencesfortheevaluationofequipmentinpointofviewofEMC.II.SOURCE,PATHANDVICTIMOFEMIUndesiredvoltageorcurr
8、entiscalledinterferenceandtheircauseiscalledinterferencesource.Inthispapera
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