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小功率脉冲频率调制介质阻挡放电电源的分析与设计（英文）.docx

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小功率脉冲频率调制介质阻挡放电电源的分析与设计（英文） AnalysisandDesignofLow-PowerPulseFrequencyModulationDielectricBarrierDischargePowerSupply Abstract: Thispaperpresentstheanalysisanddesignofalow-powerpulsefrequencymodulationdielectricbarrierdischargepowersupply.Thetheoreticalbasisofdielectricbarrierdischargeisdiscussedindetail,andthedesignprocessofpulsefrequencymodulationisdescribed.Theperformanceofthepowersupplyisanalyzedthroughsimulation,andtheexperimentalresultsarediscussed.Thepowersupplyhasbeenshowntohaveastableandcontrollabledischargeoutput,whichcouldbeusedinavarietyofindustrialandscientificapplications. Introduction: Dielectricbarrierdischarge(DBD)hasbeenwidelyusedinvariousfields,suchasplasmaprocessing,environmentalpollutiontreatment,andbiomedicalengineering.ThetraditionalpowersupplyforDBDusesanACpowersource,whichisbulky,expensive,anddifficulttocontrol.Alow-powerpulsefrequencymodulation(PFM)DBDpowersupplyhasbeendevelopedtoaddresstheseissues.Thispaperpresentsthedesignprocessandperformanceanalysisofalow-powerPFMDBDpowersupply. Theory: TheDBDisatypeofnon-thermalplasmadischargegeneratedinadielectricbarrier,whichisaninsulatingmaterialplacedbetweentwoelectrodes.Whenahighvoltageisappliedacrosstheelectrodes,theelectricfieldbreaksdownthegasbetweentheelectrodesandcreatesplasma.Theplasmaisgeneratedinthegas-filledchannelsandisconfinedbetweenthedielectriclayers.DBDhasseveraladvantages,suchaslowgastemperaturerise,lowelectriccurrentdensity,low-cost,simplestructure,andgoodcontrollability. Design: TheDBDpowersupplyconsistsofahighvoltagesource,asignalgenerator,andapoweramplifier.Thehighvoltagesourceprovidesahighvoltageoutput,andthesignalgeneratorgeneratesapulsesignal.Thepulsesignalisthenamplifiedbythepoweramplifierandappliedtotheelectrodes.ThePFMmodulationtechniqueisusedtocontrolthedischargefrequency. InthePFMmodulationtechnique,thepulsefrequencyismodulatedbetweentwofrequenciesF1andF2.Thefrequencyofthepulseisvariedbasedonaspecificwaveformorsequence.ThePFMmodulationtechniquecanbeusedtocontrolthefreque