Research on waveform optimization of quasi-square wave pulse source based on PFN-Marx

Jiang jinbo; Chu Hangge; Ren Yingjie; Zhang Guozheng; Qiu Li; OuYang Shanchuan

doi:10.11884/HPLPB202537.250122

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Jiang jinbo, Chu Hangge, Ren Yingjie, et al. Research on waveform optimization of quasi-square wave pulse source based on PFN-Marx[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250122

Citation:

Jiang jinbo, Chu Hangge, Ren Yingjie, et al. Research on waveform optimization of quasi-square wave pulse source based on PFN-Marx[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250122

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Research on waveform optimization of quasi-square wave pulse source based on PFN-Marx

doi: 10.11884/HPLPB202537.250122

1.
China Three Gorges University, College of Engineering and New Energy, Yichang 443000, China
2.
State Grid Chongqing Electric Power Company Wanzhou Power Supply Branch, Chongqing Wanzhou 404000, China
3.
Hunan Yunjian Group Co., Ltd., Changsha, Hunan, 410100, China

Received Date: 2025-05-12
Accepted Date: 2025-07-29
Rev Recd Date: 2025-06-28

Available Online: 2025-09-02

Abstract

Abstract

Background
Pulse drive sources are a critical component of high-power microwave systems. Existing drive sources based on Tesla+PFL or LTD technology offer good waveform quality but are limited by their large size and weight. PFN-Marx technology sequentially stacks voltages during pulse discharge, requiring relatively low insulation, making it an ideal technical approach for drive source miniaturization. However, current PFN-Marx-based drive sources struggle to balance compact structural design with output waveform quality.
Purpose
This study aims to design a compact high-power pulse drive source based on PFN-Marx technology to meet the requirements of a specific high-power microwave system.
Methods
To achieve this goal, a 7-stage unipolar pulse charging PFN-Marx generator is employed, with a high-power constant-current charging power supply powered by lithium batteries used to charge the primary capacitor of the Tesla transformer. The PFN modules are designed with identical charging loop inductors to ensure synchronized pulse charging waveforms, and their modular structure allows for flexible scalability. Additionally, the air-core Tesla transformer (coupling coefficient >0.8) is integrated with the PFN-Marx within a high-voltage chamber filled with SF₆ gas to ensure insulation.
Results
The results show that the drive source outputs a single pulse energy of 45.6 J, and can output a quasi-square wave pulse at a 75 Ω load, with an amplitude of −189.2 kV, a pulse width of 93.2 ns, a rise time of 8.4 ns, and a peak power of 477 MW. The lithium-ion battery charging and control power supply has dimensions of 482 mm × 443 mm × 177 mm and weighs 12.6 kg; the integrated Tesla transformer and PFN-Marx generator have dimensions of Φ370 × 848 mm and weigh 28.7 kg; at a repetition rate of 5 Hz, the average output voltage is -183.4 kV, with a voltage dispersion of 4.1%.
Conclusions
Therefore, this compact PFN-Marx-based pulse drive source achieves both miniaturization and high-quality waveform output, laying the foundation for the development of higher-power, higher-performance compact pulse drive sources.
- high-power pulse driver source,
- PFN-Marx,
- air-core Tesla transformer,
- constant-current charging

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References(16)

References

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