Polarity effect on triggered vacuum switch with multi-rod system
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摘要: 基于有限元分析软件ANSOFT对触发真空开关触发极附近的静电场分布进行了仿真，并对其工作在不同的极性配置方式下开展了一系列实验。主要研究触发真空开关极性配置方式与导通时延的大小及其分散性的关系，同时分析了静电场对初始等离子体扩散的影响，从而为触发真空开关的结构优化设计提供理论依据。仿真结果表明：当触发极工作在正极性配置下，可以增强触发极附近阴极表面的电场强度，从而有利于阴极斑点的形成，减小导通时延及其分散性，提高其可靠性。实验验证了触发真空开关在正极性配置下的工作可靠性高、时延小，与仿真分析结果一致。Abstract: The electrostatic field near the trigger pin of multi-rod triggered vacuum switch (TVS) was simulated with ANSOFT. Several experiments were carried out under different working polarities. The relationship between the working polarities and the time delay was obtained， and the influence of electrostatic field on the dissipation of initiate plasma was analyzed. The simulation results show that， when the trigger voltage is positive， the electric field strength near the cathode surface is enhanced， which facilitates the formation of cathode spots， and reduces the turn-on delay and jitter. The experimental results are in accordance with the simulation results，proving that the TVS works reliably with small delay and jitter in the positive working polarity.
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Key words:
- triggered vacuum switch /
- polarity effect /
- time delay /
- electrostatic field
期刊类型引用(5)
1. 蒋琳，刘军，袁晓蓉，张浩，李春领，蔡光明. 薄片激光器低畸变冷却技术研究. 中国激光. 2021(03): 7-13 . 
百度学术2. 郭嘉伟，贾凯，杨峰，彭春，汪晓聪，刘晓旭，韩聚洪，荣克鹏，安国斐，蔡和，王浟. 喷流冷却复合陶瓷薄片激光器的热特性仿真分析及实验研究（英文）. 光子学报. 2020(03): 7-15 . 百度学术3. 李国会，徐宏来，吴晶，杜应磊，向汝建，周志强，于益，胡平，向振佼，张越. 非稳腔薄片激光器腔内像差组合式主动校正技术. 中国激光. 2020(10): 30-37 . 百度学术4. 李隆，潘晓瑞，耿鹰鸽. LD端面抽运Nd:YAG微片热容激光器温度场. 激光与光电子学进展. 2017(12): 261-270 . 百度学术5. 邵娜，朱晓，朱广志，王牧，冯玙璠，黄彦. 碟片激光器晶体模块阵列射流冲击冷却的研究. 激光技术. 2016(05): 695-700 . 百度学术其他类型引用(2)
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