双路脉冲输出结构理论设计与仿真

高明珠; 苏建仓; 邱旭东; 曾搏; 李锐; 赵亮

doi:10.11884/HPLPB202335.220310

双路脉冲输出结构理论设计与仿真

doi: 10.11884/HPLPB202335.220310

高明珠^1,,
苏建仓¹,
邱旭东^{1, 2},
曾搏¹,
李锐¹,
赵亮¹

1.
西北核技术研究所先进高功率微波技术重点实验室，西安 710024
2.
西安交通大学电子物理与器件教育部重点实验室，西安 710049

基金项目: 国家自然科学基金项目(51377135）

详细信息

作者简介:
高明珠，gaomingzhu@nint.ac.cn

中图分类号: TM85
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- 被引次数: 0
出版历程
- 收稿日期: 2022-09-29
- 修回日期: 2023-02-24
- 录用日期: 2023-01-16
- 网络出版日期: 2023-03-04
- 刊出日期: 2023-04-07

Design and simulation of dual short pulse transmission structure

1.
Key Laboratory of Advanced Science and Technology on High Power Microwave, Northwest Institute of Nuclear Technology, Xi’an 710024, China
2.
Key Laboratory for Physical Electronics and Devices of Ministry of Education, Xi’an Jiaotong University, Xi’an 710049, China

摘要

摘要: 基于单台脉冲功率驱动源同时驱动两个微波器件产生双频高功率微波的构想，设计了一种双路短脉冲输出结构，其接于主开关后，能够将主开关产生的高压纳秒脉冲传输至高功率微波产生器。两路脉冲由同一脉冲源产生，具有很好的一致性。对双路输出结构脉冲传输过程进行了建模仿真，研究了传输线阻抗、输入脉冲前沿等电学参数对输出波形质量的影响规律，并完成了绝缘风险分析及结构优化。经评估，在前沿4～8 ns的准方波输入脉冲下，双路脉冲输出线的输出波形质量与单路传输线相当，其过冲振荡均小于20%、平顶振荡均小于1%，且能满足绝缘要求。
- 双路输出线 /
- 脉冲质量 /
- 数值模拟 /
- 高功率微波 /
- 短脉冲传输线
Abstract: The scheme of a dual short pulse output structure is proposed, according to the concept that two microwave device driven by the same pulsed accelerator can produced stable dual-frequency high power microwave (HPM) simultaneously. Structure model of a dual short pulse output structure is designed, which is connected to the main switch and can transmit the high voltage nanosecond pulse generated by the switch to the HPM generator. The two-channel pulse is produced by the same pulse source and has good consistency. In this paper, the pulse transmission process of the dual short pulse transmission structure is modeled and simulated, and the influence of electrical parameters such as transmission line impedance and input pulse front on output waveform quality is studied. The risk analysis about insulation and structural optimization are completed. It is estimated that the output pulse quality of the simultaneous output line is equal to that of the single transmission line under 4−8 ns quasi-square wave input pulse, and the overshoot oscillation is less than 20%, the flat top oscillation is less than 1%, and it can meet the insulation requirement.
- dual transmission structure /
- the output pulse quality /
- numerical simulation /
- high power microwave /
- short transmission line

HTML全文

图 1 双路脉冲同时输出结构及负载阻抗图

Figure 1. Two-way pulse simultaneous output structure and load impedance

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图 2 两路负载稳定阻值不一致情况下的输出波形

Figure 2. Output waveforms under different load stabilization resistances of two ways

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图 3 两路负载阻抗下降速率不一致的输出波形

Figure 3. Output waveforms with discordant load impedance rate

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图 4 两路负载阻抗起始下降时刻不一致时的输出脉冲

Figure 4. Output pulses of two-way load impedance at the inconsistency of the start-down time

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图 5 不同传输线阻抗下输出脉冲及其电学特性差异

Figure 5. Difference of output pulses and electrical characteristics of different transmission line impedance

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图 6 输入脉冲特性对输出波形影响规律

Figure 6. Effect of input pulse characteristics on output waveforms

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图 7 三结合点及处置措施

Figure 7. Triple junctions and disposal measures

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图 8 输入脉冲作用下的最大电场云图

Figure 8. Maximum electric field cloud under input pulse

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表 1 两路负载稳定阻值不一致对输出波形影响

Table 1. Influence of inconsistent two-way load resistances on output waveforms

port 1 resistance/Ω	port 2 resistance/Ω	output resistance/Ω	port 1 overshot/%	port 2 overshot/%	output voltage/V
80	60	34.28	25.83	15.48	0.876
80	70	37.33	20.46	16.15	0.919
80	80	40.00	16.10	16.31	0.952
80	90	42.35	13.47	18.06	0.979
80	100	44.44	10.47	19.27	1.003

下载: 导出CSV

表 2 两路输出线绝缘风险点电场及其设计标准

Table 2. Electric field and design standard of dual short pulse transmission structure’s insulation point

risk point	E_max /(kV·cm⁻¹)	standards/(kV·cm⁻¹)
ball-vacuum ball-gas electrode surface insulating board insulator-vacuum insulator-gas	161 173 86 90 70 80	218^[10] 208^[11-13] 208^[11-13] 104^[11-13] 100^[14-16] 104^[11-13]

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