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Acta Armamentarii ›› 2016, Vol. 37 ›› Issue (5): 778-784.doi: 10.3969/j.issn.1000-1093.2016.05.002

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Research and Development on a 13MJ Pulsed Power Supply for Electromagnetic Launcher

ZHANG Ya-zhou, LI Zhen-xiao, JIN Yong, LUO Hong-e, TIAN Hui, LI Bao-ming   

  1. (National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China)
  • Received:2015-07-02 Revised:2015-07-02 Online:2016-07-06
  • Contact: ZHANG Ya-zhou E-mail:zyzrb@163.com

Abstract: With the development of the electromagnetic launch technology, the requirement of the pulse power supply (PPS) is increasing, of which the output current is required to have MA level amplitude, pulse width of several milliseconds, rapid rising and flat-topped wave. A 13 MJ capacitor-based PPS of which rated operational voltage is 10 kV was developed. The PPS is of multi-module parallel structure and composes of 13 1 MJ pulse forming subsystems. Each subsystem has 20 50 kJ pulse power modules. The maximum short-circuit discharge current of every module is about 65 kA. Charging system adopts high voltage capacitor charging power supply based on series resonance converter. Control system has two-level control structure which uses a synchronized code signal to control the sequential discharging. Measurement system based on PXI system and master-slave network structure can satisfy the requirements of distributed measurement. The performance of the system is test under artificial loading, and the experimental research on electromagnetic launching device is carried out. The experimental results show that 13 MJ PPS has high reliability and meets the requirements of EML experiment, and its output current waveform is flexible and adjustable.

Key words: ordnance science and technology, electromagnetic launcher, capacitor energy storage, pulse forming subsystem

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