Utilization of a Nonexplosive Test Bed for Flux-Compression-Generator Electroexplosive Opening Switches

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Abstract

Helical flux compression generators (HFCGs) of a 50-mm form factor have been shown to produce output energies on the order of ten times the seeded value and a typical deposited energy of 3 kJ into a 3-μHinductor. One way to drive a high-power microwave source with an HFCG is by power conditioning, such as an inductive energy storage system (IESS). The output performance of the IESS is contingent upon the opening switch scheme, usually an electroexplosive fuse. Our previous work involving fuse parameter characterization has established a baseline for potential fuse performance. In order to optimize the electroexplosive wire fuse, we have constructed a nonexplosive test bed which simulates the HFCG output with high accuracy. We have designed and implemented a capacitor-based magnetic switching scheme to generate the near-exponential rise of the HFCG. The use of the nonexplosive HFCG test bed will allow the verification of scalability of the fuse parameter model and also allow testing of exotic fuse materials. The nonexplosive test bed has provided a more efficient method for electroexplosive switch development and has allowed us to expand the study of opening switches. We will also discuss the a priori calculated baseline fuse design and compare the experimental results of the gold-wire-material with the silverwire- material baseline design. With the results presented, an accurate PSpice model applicable to our 45-kA HFCG systems will be available.

Original languageEnglish
Pages (from-to)2684-2690
Number of pages7
JournalIEEE Transactions on Plasma Science
Volume36
Issue number5
DOIs
StatePublished - Oct 2008

Keywords

  • Electroexplosive switches
  • flux-compressiongenerator test bed
  • fuse
  • gold
  • magnetic switches
  • opening switch
  • silver

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