摘要
为实现脉冲驱动源的紧凑化,研制了基于PFN-Marx的高功率脉冲驱动源。7级PFN-Marx采用单级性脉冲充电方式,有利于PFN-Marx内部结构以及Tesla变压器的紧凑化设计;采用锂电池供电的高功率恒流充电电源给Tesla变压器的初级电容充电,供电电源体积小且灵活可移动;PFN各级充电回路电感相同,脉冲充电波形完全同步,模块化结构设计,可以灵活增加驱动源的模块数提高输出功率。脉冲驱动源输出单脉冲能量为45.6J,在75Ω负载条件下输出脉冲幅值为-189.2kV、脉宽93.2ns、前沿为8.4ns的准方波脉冲,功率为477MW。锂电池充电及控制电源的体积为482 mm×443 mm×177 mm,重量为12.6 kg。Telsa变压器及PFN-Marx发生器集成化设计后的体积为ϕ370mm×848mm,重量为28.7kg。此驱动源样机为更高功率更高性能脉冲驱动源的紧凑化设计提供了参考。
[Background]Pulse drive sources are critical components 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,which requires relatively low insulation and makes 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(with a coupling coefficient greater than 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 75Ω 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 mm×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 highquality waveform output,laying the foundation for the development of higher-power and higher-performance compact pulse drive sources.
作者
江进波
褚航歌
任应杰
张国政
支玉婷
邱立
欧阳善川
Jiang jinbo;Chu Hangge;Ren Yingjie;Zhang Guozheng;Zhi Yuting;Qiu Li;Ouyang Shanchuan(College of Engineering and New Energy,China Three Gorges University,Yichang 443000,China;Wanzhou Power Supply Branch,State Grid Chongqing Electric Power Company,Wanzhou 404000,China;Hunan Yunjian Group Co,Ltd,Changsha 410100,China)
出处
《强激光与粒子束》
北大核心
2025年第12期145-152,共8页
High Power Laser and Particle Beams
基金
国家自然科学基金项目(51707105)
强脉冲辐射环境模拟与效应全国重点实验室开放基金项目(NKLIPR2406)。
