NDLI: Fundamental studies of a simple helical magnetic flux compression generator

Content Provider	IEEE Xplore Digital Library
Author	Neuber, A. Dickens, J. Giesselmann, M. Freeman, B. Rasty, J. Krompholz, H. Kristiansen, M.
Copyright Year	2000
Description	Author affiliation: Dept. of Electr. Eng., Texas Tech. Univ., Lubbock, TX, USA (Neuber, A.)
Abstract	Summary form only given, as follows. The design of a helical flux compression generator, driven by 150 g of high explosives, for basic studies is presented and experimental results are discussed in comparison to numerical simulations. Simulation of the electric current output with the commercial circuit simulator PSPICE shows that this generator conserves the magnetic flux ideally in the low current mode, <30 kA. At current amplitudes in excess of 100 kA heating and melting of the single wound helix wire, AWG 12, limit the current flow. The volume between armature and stator is spectroscopically probed with fiber optics and valuable insight into the state of the shocked and compressed gas is gained. The same fiber optic probes are used to measure the velocity of the armature-stator contact along the generator axis. This contact velocity is largely affected by armature end effects, mainly due to the pressure loss at the detonator end. Both gas temperature and contact velocity have been successfully simulated with LS-DYNA3D, a three dimensional finite element hydrodynamic code. The generator's magnetic field structure is briefly discussed and magnetic field probe measurements are presented.
File Size	104403
File Format	PDF
ISBN	0780359828
ISSN	07309244
DOI	10.1109/PLASMA.2000.855148
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-06-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic flux Magnetic field measurement Circuit simulation Optical fibers Probes Explosives Numerical simulation Current Magnetic circuits SPICE
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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