电磁脉冲焊接用真空触发开关工作特性及影响因素

李成祥; 陈丹; 杜建; 廖志刚; 周言

doi:10.11884/HPLPB202436.240345

电磁脉冲焊接用真空触发开关工作特性及影响因素

doi: 10.11884/HPLPB202436.240345

李成祥^1,,
陈丹¹,
杜建^{1, 2},
廖志刚^{1, 2},
周言^1, ,

1.
输变电装备技术全国重点实验室（重庆大学电气工程学院），重庆 400044
2.
国网重庆市电力公司永川供电分公司，重庆 402160

基金项目: 国家自然科学基金项目(52207148); 重庆市自然科学基金项目(CSTB2022NSCQ-MSX1238)

详细信息

作者简介:
李成祥，lichengxiang@cqu.edu.cn

通讯作者:
周　言，zhouyan1992@cqu.edu.cn。

中图分类号: TM89
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- 文章访问数: 157
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- 被引次数: 0
出版历程
- 收稿日期: 2024-09-27
- 修回日期: 2024-10-25
- 录用日期: 2024-10-18
- 网络出版日期: 2024-10-28
- 刊出日期: 2024-11-01

Operational characteristics and effect factors on the triggered vacuum switch for electromagnetic pulse welding

Li Chengxiang^1
,,
Chen Dan¹,
Du Jian^{1, 2},
Liao Zhigang^{1, 2},
Zhou Yan^{1
, ,}

1.
State Key Laboratory of Power Transmission Equipment Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China
2.
State Grid Chongqing Electric Power Company Yongchuan Power Supply Branch, Chongqing 402160, China

摘要

摘要: 电磁脉冲焊接是脉冲功率技术在材料加工中的应用之一，常采用真空触发开关（TVS）作为放电开关。根据电磁脉冲焊接过程特征，针对课题组所用的ZKTC国产新型TVS，详细探究了ZKTC在其触发阶段、导通阶段与初次放电阶段的工作特性。通过仿真研究了电路参数对ZKTC工作过程的影响；研制了Marx电路与脉冲变压器结合的触发装置，脉宽0～10 μs可调、幅值0～20 kV可调，基于ZKTC搭建了放电能量为27 kJ的脉冲大电流发生器测试平台并开展实验分析。结果表明，触发信号的电压幅值与上升前沿均会显著影响ZKTC触发过程；放电主回路工作电压幅值会影响ZKTC导通阶段中带电粒子的定向迁移速率与放电电流幅值，改变开关放电回路的参数并加快电压下降速度，从而对导通阶段和放电阶段产生明显影响。
- 真空触发开关 /
- 电磁脉冲焊接 /
- 导通特性 /
- 触发装置
Abstract: Electromagnetic pulse welding (EMPW) is a key application of pulsed power technology in materials processing, where triggered vacuum switch (TVS) is frequently employed as discharge switch. Based on the specific behavior of the EMPW process, this paper presents a detailed investigation into the operational characteristics of a new domestically produced TVS, named ZKTC. The study focuses on the switch's behavior during the triggering, conducting, and initial discharging stages. The effects of circuit parameters on ZKTC's operation were analyzed through simulations. A trigger device combining a Marx circuit and a pulse transformer was developed, featuring adjustable pulse widths (0–10 μs) and adjustable voltage amplitudes (0–20 kV). Based on ZKTC, a high-current pulsed generator testing platform with a discharge energy of 27 kJ was constructed to perform experimental analyses. The results indicate that the voltage amplitude and rising edge of the trigger signal significantly influence the ZKTC triggering process. While the working voltage amplitude of the main discharge circuit impacts the directional migration rate of charged particles and the discharge current during the conducting stage, modifying the parameters of the switch discharge circuit and accelerating the voltage drop rate. This, in turn, has a significant effect on both the conducting and discharging stages.
- triggered vacuum switch /
- electromagnetic pulse welding /
- conduction characteristics /
- trigger device

HTML全文

图 1 TVS工作过程

Figure 1. Stages of TVS operation

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图 2 触发阶段仿真结果

Figure 2. Simulation results of the triggering stage

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图 3 导通阶段电路模型

Figure 3. Circuit model of conducting stage

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图 4 初次放电阶段电路模型与PSpice仿真模型

Figure 4. Circuit model and PSpice simulation model of initial discharging stage

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图 5 初次放电阶段仿真结果

Figure 5. Simulation results of initial discharging stage

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图 6 ZKTC实物图

Figure 6. Physical diagram of ZKTC

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图 7 触发装置及其输出波形

Figure 7. Trigger device and its output waveform

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图 8 ZKTC测试平台及其测试波形

Figure 8. The test platform of the ZKTC and its test waveform

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图 9 触发电压对ZKTC各工作阶段的影响

Figure 9. Effects of trigger voltage on various operational stages of ZKTC

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图 10 触发信号脉冲宽度对ZKTC导通阶段t₂的影响

Figure 10. Effect of trigger signal pulse width on the conducting stage t₂ of ZKTC

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图 11 工作电压对ZKTC工作过程中各工作阶段的影响

Figure 11. Effect of working voltage on various operational stages of ZKTC operational process

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