Design and Trial-manufacture of a Coaxial Pulsed Power Cable

doi:10.3969/j.issn.1000-1093.2018.08.005

Abstract

Abstract: According to the research requirement of engineering in an electrothermal-chemical gun, a pulsed power cable was designed and developed, which is suitable for coaxial breech transmission system. The index parameters of pulsed power cable are analyzed and determined based on the pulse current and internal overvoltage data obtained from launch tests and the experience of common commercial high power cables. The structure design of pulsed power cable is carried out. Compared with common commercial high power cable, the shielding enhancement and semi-conductive layers are added in pulsed power cable. The strengthening shielding layer is used to improve the mechanical strength, which can restrain the strong electrodynamic force produced by the core dislocation of outer conductor, thus preventing the deformation and burst of cable, and improving the electromagnetic shielding effect. The semi-conductive layer is used to eliminate the air gap and balance the electric field. The electromagnetic field and thermal analyses of pulsed power cables are carried out by using simulation software, which assists in aided design of electrical strength, mechanical strength and temperature rise characteristics. In view of the breaking and tearing of the inner core end of pulse power cable in other systems, a steel core was designed to improve the tensile strength of inner conductor. Withstand voltage test and pulse discharge test show that the performance of pulsed power cable meets the requirements of the development. It is not damaged under the action of 25 kV/5 min voltage, and is not deformed under the action of pulse current with amplitude of 203 kA and half peak time greater than 2 ms. Key

Key words: pulsedpowercable, pulsedpowersupply, electrothermal-chemicallaunch, coaxialstructure

CLC Number:

TJ99

LI Zhen-xiao， JIN Yong， YANG Dong， WAN Gang， LI Bao-ming. Design and Trial-manufacture of a Coaxial Pulsed Power Cable[J]. Acta Armamentarii, 2018, 39(8): 1491-1498.

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第39卷
第8期2018 年8月兵工学报ACTA
ARMAMENTARIIVol.39No.8Aug.2018

[1]	ZHANG Ya-zhou, LI Zhen-xiao, CHENG Nian-kai, TIAN Hui, LI Bao-ming. Research on a Triggered Vacuum Switch Pulsed Power Supply [J]. Acta Armamentarii, 2017, 38(8): 1469-1475.
[2]	ZHANG Ya-zhou, LI Zhen-xiao, TIAN Hui, LI Hai-yuan, LI Bao-ming. Application of Pulse Power Supply with RSD Switch in Electromagnetic Launch [J]. Acta Armamentarii, 2017, 38(4): 658-663.