500 kA switch-trigger system for 2.0 MJ capacitive pulsed power supply
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摘要: 介绍了用于2.0 MJ激光泵浦源的新型高功率闭合开关系统的主要功能部件及其设计、研制和测试过程，分析给出了该气体开关系统的关键器件设计所依据的数学原理。在2.0 MJ电容储能的模拟脉冲电源平台上的实际测试表明，该气体开关系统的峰值通流能力达到500 kA，单次放电转移电荷量不低于150 C，累积寿命超过200 kC，理论上能同时支持20对（40只）氙灯工作。开关本体的石墨电极头还可以更换，能进一步延长寿命。该气体开关系统的总体性能接近同期国外同类型产品的指标要求。Abstract: A switch-trigger system for a 2.0 MJ pulsed power supply module has been developed. This paper discusses the design, construction and testing of this switch-trigger system. In the section about the mathematical principles, the equations of the lifetime and stability of the spark gap switch and its trigger generator are given. Extensive testing has proved the operating parameters of the switch-trigger system. The measured discharge current of the 2.0 MJ capacitive pulsed power supply module is demonstrated to be over 500 kA and the transfer charge per shot is over 150 C. The switch trigger system can support more than 200 kC transfer charge, and it can support simultaneous operation of 20 pairs of xeon flash lamps in theory. Moreover, the lifetime of this switch can be extended by replacing the graphite electrodes adopted.
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Key words:
- pulsed-power supply /
- spark gap switch /
- graphite electrodes /
- pulse transformer
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