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夹断开关对“荧光-1”实验装置电流特性的影响

Influence of crowbar switch on the current of the“Yingguang -1” device

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摘要

主要探讨了夹断开关对“荧光-1”实验装置输出电流特性的影响,利用Pspice软件对其在装置中起到的作用进行功能建模并分析其参数影响,同时开展初步调试实验并分析多组夹断开关导通性能及其同步性对负载电流的影响。仿真与实验结果表明:夹断开关可有效改善负载电流脉宽,可使脉宽从原有3 μs展宽至100 μs,其导通电阻与电感参数均能明显影响电流幅值与脉宽。由实验波形结合仿真可知,夹断开关实际导通电阻约4 mΩ,两支路耦合电感分别约为60,125 nH,调试结果验证了夹断开关功能建模的正确性及其对脉宽展宽的有效性。

Abstract

“Yingguang-1” is a multi-bank program-discharged pulsed power device to investigate the formation, confinement and instability of the high temperature and high density field reversed configuration (FRC) plasma injector for the magnetized target fusion (MTF), which was constructed at the Institute of Fluid Physics (IFP) in 2014. This paper discusses the influence of the crowbar switch on the load current in “Yingguang-1” device by function modeling the crowbar switch with the software Pspice and conducting the preliminary test experiment. The function circuit modeling of the crowbar switch employed in the program-discharged power system, is accurately presented for the first time. The simulation and experiment results show that the crowbar switch can improve the load current’s duration effectively and both its closed resistance and inductances can affect the load current’s amplitude and duration obviously. As the closing resistance decreases, the current’s duration becomes broader, however, the current’s amplitude remains the same. As the coupling inductance connecting to the theta pinch main power system decreases, the duration becomes broader. The approximate 4 mΩ closing resistance and 60 nH with 125 nH coupling inductances in the actual crowbar switch have been determined by the simulation based on the measured current. The test results prove that the function modeling of the crowbar switch is correct and it broadens the current duration effectively.

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中图分类号:TM85

DOI:10.11884/hplpb201830.170385

所属栏目:脉冲功率技术

基金项目:国家自然科学基金项目(11375163);中国工程物理研究院基金项目(2011B0402009)

收稿日期:2017-09-26

修改稿日期:2017-12-01

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作者单位    点击查看

方东凡:中国工程物理研究院 流体物理研究所, 脉冲功率科学与技术重点实验室, 四川 绵阳 621999
秦卫东:中国工程物理研究院 流体物理研究所, 脉冲功率科学与技术重点实验室, 四川 绵阳 621999
孙奇志:中国工程物理研究院 流体物理研究所, 脉冲功率科学与技术重点实验室, 四川 绵阳 621999
刘 伟:中国工程物理研究院 流体物理研究所, 脉冲功率科学与技术重点实验室, 四川 绵阳 621999
贾月松:中国工程物理研究院 流体物理研究所, 脉冲功率科学与技术重点实验室, 四川 绵阳 621999
刘正芬:中国工程物理研究院 流体物理研究所, 脉冲功率科学与技术重点实验室, 四川 绵阳 621999
赵小明:中国工程物理研究院 流体物理研究所, 脉冲功率科学与技术重点实验室, 四川 绵阳 621999

联系人作者:方东凡(fangdongfan1208@126.com)

备注:方东凡(1980—),男,硕士,副研究员,主要从事脉冲功率技术及应用研究。

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引用该论文

Fang Dongfan,Qin Weidong,Sun Qizhi,Liu Wei,Jia Yuesong,Liu Zhengfen,Zhao Xiaoming. Influence of crowbar switch on the current of the“Yingguang -1” device[J]. High Power Laser and Particle Beams, 2018, 30(5): 055001

方东凡,秦卫东,孙奇志,刘 伟,贾月松,刘正芬,赵小明. 夹断开关对“荧光-1”实验装置电流特性的影响[J]. 强激光与粒子束, 2018, 30(5): 055001

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