Development of a numerical computer code and circuit element models for simulation of firing systems

Technical Report · Mon Jul 02 00:00:00 EDT 1990

DOI:https://doi.org/10.2172/6283701· OSTI ID:6283701

Carpenter, K H ^[1]

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1. Kansas State Univ., Manhattan, KS (USA). Dept. of Electrical and Computer Engineering

Numerical simulation of firing systems requires both the appropriate circuit analysis framework and the special element models required by the application. We have modified the SPICE circuit analysis code (version 2G.6), developed originally at the Electronic Research Laboratory of the University of California, Berkeley, to allow it to be used on MSDOS-based, personal computers and to give it two additional circuit elements needed by firing systems--fuses and saturating inductances. An interactive editor and a batch driver have been written to ease the use of the SPICE program by system designers, and the interactive graphical post processor, NUTMEG, supplied by U. C. Berkeley with SPICE version 3B1, has been interfaced to the output from the modified SPICE. Documentation and installation aids have been provided to make the total software system accessible to PC users. Sample problems show that the resulting code is in agreement with the FIRESET code on which the fuse model was based (with some modifications to the dynamics of scaling fuse parameters). In order to allow for more complex simulations of firing systems, studies have been made of additional special circuit elements--switches and ferrite cored inductances. A simple switch model has been investigated which promises to give at least a first approximation to the physical effects of a non ideal switch, and which can be added to the existing SPICE circuits without changing the SPICE code itself. The effect of fast rise time pulses on ferrites has been studied experimentally in order to provide a base for future modeling and incorporation of the dynamic effects of changes in core magnetization into the SPICE code. This report contains detailed accounts of the work on these topics performed during the period it covers, and has appendices listing all source code written documentation produced.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Kansas State Univ., Manhattan, KS (USA). Dept. of Electrical and Computer Engineering
• Sponsoring Organization: DOE/DP
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6283701
• Report Number(s): UCRL-CR-105603; ON: DE91007162
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
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COMPUTER ARCHITECTURE
ELECTRIC DISCHARGES
FORTRAN
PERSONAL COMPUTERS
PROGRESS REPORT
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