气体火花开关论文：气体火花开关脉冲功率气体电离

1、【关键词】气体火花开关脉冲功率气体电离【英文关键词】gassparkswitchpulsedpowertechnologyGasionization气体火花开关论文：用于EMP模拟器的气体火花开关的优化设计【中文摘要】开关是脉冲功率系统中的关键部件，研究设计的火花开关应用于电磁脉冲模拟器，开关为同轴式、电脉冲触发结构。主要内容如下：1研究分析电脉冲方式触发气体火花开关性能的影响因素,基于电路理论和气体放电理论，对火花开关进行数学建模，实现自洽和非自洽的仿真分析。2、基于仿真结果，优化气体火花开关的内部结构及相关参数，并研制出火花开关及相应的触发控制电路。3、装配调试火花开关，并进行系统的试验分

2、析，包括静态击穿特性、触发特性和开关导通性能试验。得出的主要结果及结论如下：1、仿真模拟结果表明，阴极的尺寸结构对脉冲的上升时间影响比较大，一定条件下,阴极尺寸越大，能接受的火花通道的光子辐射越多，越能缩短输出脉冲的上升时间。2、在开关触发范围内，触发脉冲幅值增大能减小输出脉冲的抖动，增大输出脉冲的峰值电压；触发脉冲幅值偏小时，输出脉冲峰尖会变平，脉冲上升时问也会延长。3、试验结果发现，脉冲上升时间随着导通电压的增大而减小，但是在减小的过程中没有表现出明显的规律性。4、储能电容的容量决定着脉冲的能量，在75Q负载情况下，储能电容每变化100pF,输出脉冲的下降时间也相应变化16ns,试验得出的

3、结果与理论基本符合。设计的气体火花开关，试验测试值与理论模拟值基本吻合；触发性能稳定，触发频率可调；输出脉冲上升时间可以短至2.2ns;输出脉冲峰值可以达到40kV。【英文摘要】Switchiscorecomponentsinpulsedpowersystems.SparkSwitchisusedforelectromagneticpulsesimulator.Thisswitchdesignedasthecoaxialstructure.Thetriggermodeisthefielddistortiontrigger.Themaincontentsofthispaperarelisteda

4、sfollowing:1.Analysistheperformaneefactorsofthegassparkswitchwhichistriggeredbytheelectricalpulse.Establishamathematicalmodelingforthegassparkswitchtoachieveself-consistentandnon-self-consistentsimulationanalysis,whichisbasedoncircuittheoryandthegasdischargetheory.2.Optimizetheinternalstructureandre

5、latedparametersofthegassparkswitch.Designtheswitchandtriggercontrolcircuit.3.Assemblesofthesparkswitchandteststhewholesystem.Thetestincludingstaticbreakdowncharacteristic,triggerfeatureandswitchingconductionproperties.Themainexperimentconclusionobtainedincludes:1.Theresultofsimulationshowsthatthepul

6、serisetimeisaffectedbythesizeandstructureofthecathode.Ifwemakeabiggercathode,itwillgetmorephotonradiationofthesparkchannelandcanshortentheoutputpulserisetime2.Withintherangeofswitchtrigger,increasetheamplitudesofthetriggerpulsecanreducethejitteroftheoutputpulse,andtoincreasesthepeakvoltageoftheoutpu

7、tpulse.Iftheamplitudesofthetriggeristoosmall,theoutputpulserisetimewillbeextended.3.Pulserisetimedecreaseswiththeincreaseoftheturn-onvoltage,butintheprocessofreduceddidnotshowobviousregularity.Ithinkitiscausedbythatwhenrisetheturn-onvoltagethesparkchannelpositionhasbeenchanged.4.Capacityofenergyrese

8、rvecapacitaneedecidesenergyofpulse,whentheloadis75&thefall-timeofoutputpulsewillbedelayedabout16nswhenenergyreservecapacitaneeincreaseslOOp.Theresultsoftestisinlinewiththetheoreticalvalues.Theexperimentalvaluesofthisgassparkswitchareconsistentwiththetheoreticalvalues.Thetriggerfrequencecanbeadjusted,andstableperformanee.Theoutputpulserisetimeofthisswitchcanbe