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

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

2、ronicsconvertersespeciallyinswitchingpowersuppliesimprovesefficiencybutleadstoEMI.Differentkindofconductedinterference,EMIregulationsandconductedEMImeasurementareintroducedinthispaper.CompliancywithnationalorinternationalregulationiscalledElectromagneticCompatibility(EMC

3、).PowerelectronicsystemsproducersmustregardEMC.ModelingandsimulationisthefirststepofEMCevaluation.EMIsimulationresultsduetoaPWMBucktypeswitchingpowersupplyarepresentedinthispaper.ToimproveEMC,sometechniquesareintroducedandtheireffectivenessprovedbysimulation.IndexTerms:C

4、onducted,EMC,EMI,LISN,SwitchingSupplyI.INTRODUCTIONFASTsemiconductorsmakeitpossibletohavehighspeedandhighfrequencyswitchinginpowerelectronics.Highspeedswitchingcausesweightandvolumereductionofequipment,butsomeunwantedeffectssuchasradiofrequencyinterferenceappeared.Compli

5、ancewithelectromagneticcompatibility(EMC)regulationsisnecessaryforproducerstopresenttheirproductstothemarkets.ItisimportanttotakeEMCaspectsalreadyindesignphase.ModelingandsimulationisthemosteffectivetooltoanalyzeEMCconsiderationbeforedevelopingtheproducts.Alotoftheprevio

6、usstudiesconcernedthelowfrequencyanalysisofpowerelectronicscomponents.DifferenttypesofpowerelectronicsconvertersarecapabletobeconsideredassourceofEMI.TheycouldpropagatetheEMIinbothradiatedandconductedforms.LineImpedanceStabilizationNetwork(LISN)isrequiredformeasurementan

7、dcalculationofconductedinterferencelevel.InterferencespectrumattheoutputofLISNisintroducedastheEMCevaluationcriterion.NationalorinternationalregulationsarethereferencesfortheevaluationofequipmentinpointofviewofEMC.II.SOURCE,PATHANDVICTIMOFEMIUndesiredvoltageorcurrentisca

8、lledinterferenceandtheircauseiscalledinterferencesource.Inthispaperahigh-speedswitchingpowersupplyisthe