高压纳秒脉冲的形成与其大气压下放电特性的分析

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1、东华大学硕士学位论文HIGHVOI卫AGENANOSECONDPULSEDENERATORANDITSDISCH川RGECHARACTERISTICSAT删OSP_HElUCPRESSUl哑ABSTRACTThestudyOilusinghighvoltagenanosecondpulsedischargetocreatelowtenlperatm'eplasmahasbeenpaidmoreattentioninthefieldoflowtcmlgratureplasma．Thecharacteristicsofl

2、owtemperatureplasmawithlowtcmperamreandgoodcontrollabilitymakesithasauniqueadvantageinmaterialhandling，polluteddisposal，sterilizationanddisinfection．Thecharacteristicsoflowtc嘲mpcratureplasmacrcatedbyhighvoltagenanosecondpulsedischargeareuniform，stabilizedandhig

3、hconcentrationsofactiveparticles．Mostofthehi．ghvoltagenanosecondpulsegeneratoriscombinedwithMarxGeneratorandpulse-forminglineatpresent．r111ispaperdevelopedahighvoltagenanosecondpulsegenerator．Fist,impulsecapacitordischarge，thenthepulsetransformerbooststhevoltag

4、e．Weuseamagneticcompressionnetworktosb御汹gpulsefrontedge．Therewerefewreportsaboutthisway．Themainresearchcontentsofthispaperincludethesefollowing嬲pects：1．Proposedaprojectofhighvoltagenanosecondpulsegenerator．Useahi。ghpowerIGBTmoduletocontrolthedisdmrgeofimpulseca

5、pacitorwithlargecurrent．Boostthevoltagebyapulsetransformer．Useamagneticcompressionnetworktosharpeningpulsefrontedge．2．Designedacircuittoformingalowvoltageandlargecurrentpulse．Thiscircuitcanoutputapulsewith330Vand630A．DesignanIGBTovcrvoltageprotectioncircuitwhic

6、hcombinedwithTypeCandTypeRCDSnubbercircuit．ItprotootsIGBTfromhi曲voltagepulsedamagewhentheIGBTturning-093．Formulatedadesignphilosophyofmagneticswitchbyanalysisthetheoryofmagneticswitchandmagneticmultistagecompressiontheory．Dosignedallexperimenttomeasurethedynami

7、ccharacteristicsofmagneticmaterial．Wegainedtheunsaturatedpermeabilityandsaturatedpermeabilityofmagneticmaterialthroughthisexperiment．Designedathreestage东华大学硕士学位论文magneticcompressornetwork．Withthisnetwork，wereducedthepulsefrontedgefrom12．38峪to88．14ns．Theratioofc

8、ompressorisabout140．4．UsedthehigllvoltagenanosecondpulsegeneratortodischargeinArgongasflowatatmosphericpressure．Weobservedthatthereareseveralmicrodischarg髓whichsustainslesst