快脉冲直线变压器初级放电单元开关电容一体化设计

张天洋; 黄涛; 丛培天; 罗维熙; 尹佳辉; 翟戎骁

doi:10.11884/HPLPB202436.240291

快脉冲直线变压器初级放电单元开关电容一体化设计

doi: 10.11884/HPLPB202436.240291

强脉冲辐射环境模拟与效应全国重点实验室，西北核技术研究所，西安 710024

详细信息

作者简介:
张天洋，zhangtianyang@nint.ac.cn

中图分类号: TN78
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- 文章访问数: 20
- HTML全文浏览量: 15
- PDF下载量: 1
- 被引次数: 0
出版历程
- 收稿日期: 2024-08-29
- 修回日期: 2024-10-09
- 录用日期: 2024-10-09
- 网络出版日期: 2024-10-15

Assembly design of switch and capacitor for fast linear transformer driver primary discharge unit

National Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi’an 710024, China

摘要

摘要: 开关电容器组成的初级放电支路是快脉冲直线变压器（FLTD）的基本单元，在输出电流幅值和前沿不变的前提下，降低单元回路电感可有效减少放电支路及气体开关的使用数量，从而提高FLTD的整体可靠性。因此，设法降低初级支路电感是FLTD关键技术。基于开关电容一体化技术研制了一台低电感FLTD初级放电单元，采用环形高压脉冲电容器作为能量储能元件，其工作电压100 kV，电容量39.6 nF，内电感8.8 nH。实验测试了初级放电单元的工作特性，结果表明：在±50 kV工作电压下，初级放电单元的短路电流幅值40 kA，前沿50 ns，回路电感为101 nH；在±80 kV工作电压下，初级放电单元对匹配负载的输出电流幅值为30 kA，前沿66 ns。
- 快脉冲直线型变压器 /
- 开关电容一体化 /
- 初级放电支路 /
- 低电感
Abstract: The primary discharge circuit composed of switch and capacitors is the basic unit of fast linear transformer driver (FLTD). Under the condition that the amplitude and rise time of the output current are constant, the number of the units and the gas switches can be reduced effectively by reducing the inductance of the unit circuit, thus the overall reliability of FLTD can be improved. Therefore, reducing the inductance of the primary discharge circuit is always the key technology of FLTD. A low inductance FLTD primary discharge unit is developed based on switch and capacitor assembly technology in this paper. The unit uses ring-shaped high voltage pulse capacitor as energy storage element. Its operating voltage is 100 kV, capacity is 39.6 nF, and internal inductance is 8.8 nH. The working characteristics of the primary discharge unit are tested. The experimental results show that when the charging voltage of the capacitor is ±50 kV, the short-circuit output current amplitude of the primary discharge unit is 40 kA, the rise time is 50 ns, and the loop inductance is 101 nH. When the charging voltage of the capacitor is ±80 kV, the output current amplitude of the primary discharge unit to the matched load is 30 kA and the rise time is 66 ns.
- fast linear transformer driver /
- switch and capacitor integration /
- primary discharge circuit /
- low inductance

HTML全文

图 1 新型初级放电单元结构示意图

Figure 1. Structure diagram of new type primary discharge unit

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图 2 环形高压脉冲电容器结构示意图

Figure 2. Structure diagram of ring-shaped high voltage pulse capacitor

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图 3 环形高压脉冲电容器阻抗虚部扫频结果

Figure 3. Frequency sweeping result of impedance virtual part of ring-shaped high voltage pulse capacitor

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图 4 初级放电单元实验测试平台

Figure 4. Experimental test platform for primary discharge unit

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图 5 短路条件下的放电电流波形

Figure 5. Discharge current waveform under short circuit condition

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图 6 匹配负载条件下的放电电流波形

Figure 6. Discharge current waveform under matching load condition

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