高电压技术2023，Vol.49Issue(12)：5237-5245,9.DOI:10.13336/j.1003-6520.hve.20221471
并联气体开关导通分散性对平行板汇流装置放电电流的影响
Effect of Parallel Gas Switch Conduction Dispersion on the Discharge Current of Parallel Plate Collector-current Device
摘要
Abstract
We investigated the impact of parallel switches'dispersion of conduction on parallel-plate pulse power devices'discharge current.Based on the experimental results,a model for the gas switch conduction dispersion and a circuit simu-lation model with various parameter modules were developed to study how the discharge current varies as the switch conduction dispersion size and different circuit parameters change.The study results show that overcurrent in the loop is caused by switch conduction dispersion.The overcurrent extremes will rise further with decreasing loop inductance and capacitance,raising load inductance,and increasing the number of parallel circuits.Overvoltage is a necessary condition for the switch to be able to turn on after a delay of several microseconds.The circuit's maximum overcurrent peak value for module 1 is 607 kA at 70 kV operating voltage and has an overcurrent multiplier of 1.33;the maximum overcurrent peak value of circuit for module 2 is 590 kA at 35 kV operating voltage and has an overcurrent multiplier of 15.6.As the number of delayed conduction switches and switch conduction dispersion increases,the peak value of the load current decreases,and the rise time of the load current increases.Moreover,the charge redistribution between each circuit causes the load current to be affected less than the circuit current.The availability of load current and the safe operation of the device allow fluctuations in peak load current of no more than 5％,requiring a dispersion of no more than 587.5 ns for module 1 and 35.25 μs for module 2,corresponding to overcurrent maximum values of 504 kA and 135 kA,respectively.关键词
同步放电/导通分散性/平行板汇流/过电流/过电压Key words
synchronous discharge/conduction dispersion/parallel platecollector-current/overcurrent/overvoltage引用本文复制引用
张永鹏,路志建,唐小松,宋振飞,杨兰均..并联气体开关导通分散性对平行板汇流装置放电电流的影响[J].高电压技术,2023,49(12):5237-5245,9.基金项目
国家自然科学基金(11932018)Project supported by National Natural Science Foundation of China(11932018) （11932018）
