DocumentCode :
1467469
Title :
The UoSAT-2 spacecraft power system
Author :
Wong, H.S. ; Blewett, M.J.
Volume :
57
Issue :
5
fYear :
1987
Abstract :
Four panels of Si solar cells provide power to charge packs of NiCd battery cells via a battery charge regulator. Regulated + 10 V, ¿ 10 V and + 5 V supplies from a centralized power regulating system, as well as + 14 V unregulated battery voltage, are supplied to a power distribution module which uses bipolar transistors to switch power as required to different loads. As UoSAT is in eclipse for over one-third of its orbit, batteries with good cyclic performance must be provided. UoSAT-2 operates on a negative power budget where the power required to keep all systems fully operational is greater than the solar power available. Consequently, significant groundstation effort is required to monitor and manage the power system. Future satellites may incorporate a microprocessor-driven control element in a further step towards system autonomy.
fLanguage :
English
Journal_Title :
Electronic and Radio Engineers, Journal of the Institution of
Publisher :
iet
ISSN :
0267-1689
Type :
jour
DOI :
10.1049/jiere.1987.0089
Filename :
5261728
Link To Document :
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