开关电源外文翻译(1)

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1、Modeling,Simulation,andReductionofConductedElectromagneticInterferenceDuetoaPWMBuckTypeSwitchingPowerSupplyIA.FarhadiAbstract:UndesiredgenerationofradiatedorconductedenergyinelectricalsystemsiscalledElectromagneticInterference(EMI).Highspeedswitchingfrequ

2、encyinpowerelectronicsconvertersespeciallyinswitchingpowersuppliesimprovesefficiencybutleadstoEMI.Differentkindofconductedinterference,EMIregulationsandconductedEMImeasurementareintroducedinthispaper.Compliancywithnationalorinternationalregulationiscalled

3、ElectromagneticCompatibility(EMC).PowerelectronicsystemsproducersmustregardEMC.ModelingandsimulationisthefirststepofEMCevaluation.EMIsimulationresultsduetoaPWMBucktypeswitchingpowersupplyarepresentedinthispaper.ToimproveEMC,sometechniquesareintroducedandt

4、heireffectivenessprovedbysimulation.IndexTerms:Conducted,EMC,EMI,LISN,SwitchingSupplyI.INTRODUCTIONFASTsemiconductorsmakeitpossibletohavehighspeedandhighfrequencyswitchinginpowerelectronics.Highspeedswitchingcausesweightandvolumereductionofequipment,butso

5、meunwantedeffectssuchasradiofrequencyinterferenceappeared.Compliancewithelectromagneticcompatibility(EMC)regulationsisnecessaryforproducerstopresenttheirproductstothemarkets.ItisimportanttotakeEMCaspectsalreadyindesignphase.Modelingandsimulationisthemoste

6、ffectivetooltoanalyzeEMCconsiderationbeforedevelopingtheproducts.Alotofthepreviousstudiesconcernedthelowfrequencyanalysisofpowerelectronicscomponents.DifferenttypesofpowerelectronicsconvertersarecapabletobeconsideredassourceofEMI.TheycouldpropagatetheEMIi

7、nbothradiatedandconductedforms.LineImpedanceStabilizationNetwork(LISN)isrequiredformeasurementandcalculationofconductedinterferencelevel.InterferencespectrumattheoutputofLISNisintroducedastheEMCevaluationcriterion.Nationalorinternationalregulationsarether

8、eferencesfortheevaluationofequipmentinpointofviewofEMC.II.SOURCE,PATHANDVICTIMOFEMIUndesiredvoltageorcurrentiscalledinterferenceandtheircauseiscalledinterferencesource.Inthispaperahigh-speedswitchingpowersupplyisthe