Numerical Simulation of Azimuthal Uniformity of Injection Currents in Single-Point-Feed Induction Voltage Adders

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摘要 Inordertoinvestigatetheinjectioncurrentuniformityaroundtheinductioncellbores,twofullyelectromagnetic(EM)modelsarerespectivelyestablishedforasingle-stageinductioncellandaninductionvoltageadder(IVA)withthreecellsstackedinseries,withoutconsideringelectronemission.Bymeansofthesetwomodels,somefactorsaffectingtheinjectioncurrentuniformityaresimulatedandanalyzed,suchastheimpedancesofaddersandloads,celllocations,andfeedtimingofparalleldrivingpulses.Simulationresultsindicatethathigherimpedancesofadderandloadsareslightlybeneficialtoimproveinjectioncurrentuniformity.Astheimpedancesofadderandloadsincreasefrom5Ωto30Ω,theasymmetriccoefficientoffeedcurrentsdecreasesfrom10.3%to6.6%.Thecurrentnon-uniformitywithinthefirstcellisalittleworsethanthatinotherdownstreamcells.Simulationresultsalsoshowthatthefeedtimingwouldgreatlyaffectcurrentwaveforms,andconsequentlycausesomedistortioninpulsefrontsofcelloutputvoltages.Foragivendrivingpulsewithdurationtimeof70-80ns,thefeedtimingwithatimedeviationoflessthan20nsisacceptableforthethree-cellIVAs,justcausingtherisetimeofoutputvoltagestoincreaseabout5nsatmostandmakingthepeakvoltagedecreaseby3.5%.
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出版日期 2015年03月13日(中国期刊网平台首次上网日期,不代表论文的发表时间)
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