具有快前沿的固态Marx电源的研究

李东升; 李孜; 王永刚; 姜松; 饶俊峰

doi:10.11884/HPLPB202436.230197

具有快前沿的固态Marx电源的研究

doi: 10.11884/HPLPB202436.230197

李东升^1,,
李孜¹,
王永刚¹,
姜松¹,
饶俊峰^2, ,

1.
上海理工大学机械工程学院，上海 200093
2.
中国科学院苏州生物医学工程技术研究所，江苏苏州 215163

基金项目: 国家自然科学基金项目(12205192)；国家重点研发计划项目(2019YFC0119102)

详细信息

作者简介:
李东升，1125503759@qq.com

通讯作者:
饶俊峰，raojf@sibet.ac.cn。

中图分类号: TN78
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- 被引次数: 0
出版历程
- 收稿日期: 2023-06-28
- 修回日期: 2023-11-09
- 录用日期: 2023-11-06
- 网络出版日期: 2023-11-20
- 刊出日期: 2024-01-12

Research on solid state Marx power supply with fast front

1.
School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 230026, China
2.
Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China

摘要

摘要: 纳秒脉冲电场消融要求在100 Ω负载上产生数千伏的纳秒脉冲，加快脉冲前沿有利于获得更窄的纳秒脉冲。提出了一种具有快速前沿的固态Marx发生器，在每级电路中插入一个电感，并且让放电管和充电管同时导通数十纳秒，等放电管完全开通后，关断充电管，对负载进行放电，以消除放电管和放电回路杂散电感对脉冲前沿的限制，获得具有快前沿的高压脉冲。搭建了32级Marx样机，实验中通过调节直通时间，在100 Ω的低阻负载上获得了电压上升沿35 ns、脉宽800 ns、电流186 A的高压脉冲。对比并分析了充电管和放电管直通时间对上升沿的影响，发现直通时间越长，脉冲电流的前沿越快。输出端的峰值电流最大可达186 A。表明该脉冲电压源可以有效地提高电流的输出，提高系统带载能力。该方案相比于传统的改进方法，提高了系统抗干扰能力的同时，也减少了所使用开关管的数量，降低了脉冲电源的成本。
- 全固态Marx发生器 /
- 大电流 /
- 方波脉冲 /
- 上升沿
Abstract: Nanosecond pulse electric field ablation requires the generation of thousands of volts of nanosecond pulses on a 100 Ω load, and accelerating the pulse front is beneficial for obtaining narrower nanosecond pulses. This article proposes a solid-state Marx generator with a fast front, which inserts an inductor into each stage of the circuit and allows the discharge tube and charging tube to conduct simultaneously for tens of nanoseconds. After the discharge tube is fully opened, the charging tube is turned off to discharge the load, eliminating the limitation of stray inductance on the pulse front by the discharge tube and discharge circuit, and obtaining a high-voltage pulse with a fast front. A 32 level Marx prototype was built, and in the experiment, a high-voltage pulse with a voltage rise of 35 ns, a pulse width of 800 ns, and a current of 186 A was obtained on a low resistance load of 100 Ω by adjusting the through time. We compared and analyzed the effect of the direct time between the charging tube and the discharge tube on the rising edge, and found that the longer the direct time, the faster the front of the pulse current. The maximum peak current at the output end can reach 186 A. This indicates that the pulse voltage source can effectively increase the current output and improve the system’s load capacity. Compared with traditional improvement methods, this scheme not only improves the system’s anti-interference ability, but also reduces the number of switches used and reduces the cost of pulse power supply.
- all solid-state Marx generator /
- high current /
- square wave pulse /
- rising edge

HTML全文

图 1 快前沿的固态Marx电源的主电路图

Figure 1. Main circuit of the proposed solid-state Marx generator with fast leading edges

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图 2 串心磁环同步驱动原理图

Figure 2. Structure diagram of drive circuit

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图 3 门级的驱动信号时序图

Figure 3. Gate level driving signal and phase relationship

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图 4 仿真原理图

Figure 4. Schematic diagram of circuit simulation

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图 5 输出电压上升沿仿真结果

Figure 5. Simulation results of output voltage rising edge

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图 6 直通不同时间电路内的电流仿真对比图

Figure 6. Comparison of current simulation in a direct circuit with different time intervals

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图 7 测试电路实物图

Figure 7. Photo of the test system

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图 8 空载输出电压波形

Figure 8. Voltage waveform with open circuit

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图 9 重复频率1 kHz时的电压波形

Figure 9. Voltage waveform with 1 kHz repetition rate

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图 10 不同直通时间对上升沿的影响实验结果

Figure 10. Experimental results of the influence of different straight-through time on rising edge

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图 11 阻性负载上的输出电流

Figure 11. Output current on resistive load

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图 12 不同 Marx支路的电容电压

Figure 12. Capacitor voltage for different Marx branches

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