开关电源外文翻译.doc

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1、外文翻译毕业设计题目：公交自行车辅助还车系统电源设计原文1：Modeling,Simulation,andReductionofConductedElectromagneticInterferenceDuetoaPWMBuckTypeSwitchingPowerSupplyI译文1：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I原文2：Modeling,Simulation,andReductionofConductedElectromagneticInterferenceDuetoaPWMBuckTypeSwitchingPowerSupplyII译文2：基于压降型PWM开关

2、电源的建模、仿真和减少传导性电磁干扰IIModeling,Simulation,andReductionofConductedElectromagneticInterferenceDuetoaPWMBuckTypeSwitchingPowerSupplyIA.FarhadiAbstract:UndesiredgenerationofradiatedorconductedenergyinelectricalsystemsiscalledElectromagneticInterference(EMI).Highspeedswitchingfrequencyinpowerelectronicsc

3、onvertersespeciallyinswitchingpowersuppliesimprovesefficiencybutleadstoEMI.Differentkindofconductedinterference,EMIregulationsandconductedEMImeasurementareintroducedinthispaper.CompliancywithnationalorinternationalregulationiscalledElectromagneticCompatibility(EMC).Powerelectronicsystemsproducersm

4、ustregardEMC.ModelingandsimulationisthefirststepofEMCevaluation.EMIsimulationresultsduetoaPWMBucktypeswitchingpowersupplyarepresentedinthispaper.ToimproveEMC,sometechniquesareintroducedandtheireffectivenessprovedbysimulation.IndexTerms:Conducted,EMC,EMI,LISN,SwitchingSupplyI.INTRODUCTIONFASTsemico

5、nductorsmakeitpossibletohavehighspeedandhighfrequencyswitchinginpowerelectronics.Highspeedswitchingcausesweightandvolumereductionofequipment,butsomeunwantedeffectssuchasradiofrequencyinterferenceappeared.Compliancewithelectromagneticcompatibility(EMC)regulationsisnecessaryforproducerstopresentthei

6、rproductstothemarkets.ItisimportanttotakeEMCaspectsalreadyindesignphase.ModelingandsimulationisthemosteffectivetooltoanalyzeEMCconsiderationbeforedevelopingtheproducts.Alotofthepreviousstudiesconcernedthelowfrequencyanalysisofpowerelectronicscomponents.Differenttypesofpowerelectronicsconvertersare

7、capabletobeconsideredassourceofEMI.TheycouldpropagatetheEMIinbothradiatedandconductedforms.LineImpedanceStabilizationNetwork(LISN)isrequiredformeasurementandcalculationofconductedinterferencelevel.Interferencespe