NDLI: Transient effects during 120 VDC spacecraft high voltage DC fuse clearing

Content Provider	IEEE Xplore Digital Library
Author	Keys, D.J. Ho, R. Scolese, C.J. Wingard, R.B. Tasca, D.M. Bortulin, M.J. Ferrara, A.A. Longcoy, D.F.
Copyright Year	1997
Description	Author affiliation: NASA Goddard Space Flight Center, Greenbelt, MD, USA (Keys, D.J.)
Abstract	Historically, spacecraft power system nominal bus voltages have been increasing over time to accommodate increasing bus load demands while reducing spacecraft mass, particularly in electrical harnesses. The use of higher nominal spacecraft bus voltages requires higher rated circuit protection devices as well as a thorough understanding of power system dynamics during fault clearing events. This paper presents details of the Earth Observing System (EOS) AM-1 power subsystem topology, which is a single point ground 120 VDC /spl plusmn/4% regulated power system, correlation of the power system analytical modeling and subsequent testing of actual fuse blow transients, as well as covering the power subsystem test configuration that was developed to simulate the actual EOS AM-1 spacecraft bus topology. The analytical modeling and test configuration presented in the paper focuses on transient voltage response for 120 VDC line-to-ground and line-to-return fault clearing events involving Mepcopal P600L-135 series 5 and 10 ampere rated fuses and various power cable lengths consisting of shielded 5 and 7 wire AWG 20 wires.
Starting Page	364
Ending Page	369
File Size	640758
Page Count	6
File Format	PDF
ISBN	0780345150
DOI	10.1109/IECEC.1997.659215
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-07-27
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Space vehicles Voltage Fuses Power system dynamics Power system transients Power system protection Power system modeling Power system faults Earth Observing System Power system simulation
Content Type	Text
Resource Type	Article

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