带触发网络的多重火花间隙触发器的研制

Development of trigger generator of multiple spark gaps with trigger network

提出了一种基于Tesla变压器且带触发网络的多重火花间隙触发器设计方案。阐述了多重火花间隙在直流和脉冲信号下电压分布特性,并给出了其在脉冲电压作用下电压分布的主要影响因素。仿真分析了触发频率、分压电容和均压电阻对多重火花间隙电压分布的影响,确定了触发网络的最佳参数配置。以10级火花间隙为例,从触发器设计三要素,即脉冲陡度、输出幅值、带载能力出发,确定了Tesla型脉冲触发器的关键设计参数,当脉冲变压器的耦合系数为0.7,初级电感为2500nH,次级电感为400 mH,初级电容为60μF,初级电容充电电压为2.0kV时,次级直接输出的触发高压可实现10级火花间隙的触发导通。结合多重火花间隙导通实验,对作用于多重火花间隙的触发器的工作过程进行实验验证。

The design scheme of a trigger generator applied to multiple spark gaps based on Tesla pulse transformer was proposed.The voltage distribution characteristics of multiple spark gaps under DC and pulse voltage were introduced,and the main influence factors of the voltage distribution under pulse voltage were given.By using a simulation software,the influences of the trigger frequency,dividing capacitor and equalizing resistor on the voltage distribution were analyzed and the optimal parameter setting of the trigger network was obtained.Take 10 spark gaps for example,the key parameters of Tesla transformer were determined based on the three elements of pulse steepness,output amplitude and loading capacity.When the coupling coefficient of Tesla pulse transformer was 0.7,the primary inductance was 2500 nH,the secondary inductance was 400 mH,the primary capacitor was 60μF and the charging voltage of the primary capacitance was 2.0kV,the trigger voltage could achieve a trigger of ten-series spark gap.Combined with the multiple spark gap experiment,the work process of the Tesla pulse transformer applied to multiple spark gaps was investigated.