基于可饱和脉冲变压器谐振充电的快脉冲功率源研究  

Research on the Fast-pulsed Power Generator Based on Resonant Charging Mode of Saturable Pulse Transformer

作　　者：王坤[1] 徐鸿飞 王鑫[1] 翟今伟 李志远[1] WANG Kun;XU Hongfei;WANG Xin;ZHAI Jinwei;LI Zhiyuan(State Key Laboratory of Reliability and Intelligence of Electrical Equipment(Hebei University of Technology),Beichen District,Tianjin 300401,China)

机构地区：[1]省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学),天津市北辰区300401

出　　处：《中国电机工程学报》2023年第19期7704-7712,共9页Proceedings of the CSEE

基　　金：国家自然科学基金项目(52177138,51807050);省部共建电工装备可靠性与智能化国家重点实验(河北工业大学)优秀青年创新基金资助项目(EERI_OY2020011)。

摘　　要：基于可饱和脉冲变压器建立1种新型谐振充电装置,将脉冲变压器提升电压作用与磁开关陡化脉冲作用相结合大幅度提高输出电压的前沿。通过分析新型谐振充电装置的工作模式,确定面向快丝阵Z箍缩早期行为研究需求的谐振充电装置的参数。新型谐振充电装置驱动气体火花开关自击穿时延抖动比采用传统谐振充电装置降低50%以上。初始充电电压19kV、电极间距5.5mm、1.01325×10^(5)Pa气压下自击穿时延抖动降低至13ns。在高气压下气体火花开关的击穿电压稳定性也有大幅度的提高。利用新型谐振充电装置改进应用气体火花开关陡化脉冲变压器输出电压前沿的脉冲功率源的技术方案,建立的小型脉冲功率源可以极低的时延抖动和较高的击穿电压稳定性输出快Z箍缩预脉冲水平的脉冲电流。低时延抖动的脉冲功率源有助于对金属丝电爆炸等丝阵Z箍缩早期行为开展精确的高时空分辨率的同步诊断。In this paper,a new-type resonant charging device,which substantially decreases the rise time of loading voltage with the combination of boost action of pulse transformer and steepen action of magnetic switch,is constructed based on the saturable pulse transformer.The parameters are determined for the requirements of investigation on the initial stage of fast wire-array Z pinch by analyzing the working modes of resonant charging devices.The delay jitter in self-breakdown of a gas spark switch driven by the new resonant charging device decreases by at least 50%of delay jitter in the situation using a traditional resonant charging device.The delay jitter is 13ns with the initial charging voltage of 19kV,the electrode space of 5.5mm and the inner gas pressure of 1.01325´10^(5)Pa.The stability of self-breakdown voltage is also increased drastically under higher inner pressure in gas spark switch.The technical approach for construction of pulsed power generator using a pulse transformer with steepen action of gas spark switch is improved.The newly-constructed compact pulsed power generator can output a pulsed current in a level of pre-pulse current of wire-array Z pinch with extremely low jitter in time delay and relatively high stability in breakdown voltage.The pulsed power generator with low delay jitter can facilitate synchronous diagnosis of high temporal-spatial resolution for the initial stage of wire-array Z pinch.

关 键 词：可饱和脉冲变压器 陡化前沿 气体火花开关 击穿时延抖动 脉冲功率源 

分 类 号：TM910.6[电气工程—电力电子与电力传动]