Title :
AMPTE/CCE battery and charger performance
Author :
Sullivan, Ralph M. ; Hoffman, Christopher G. ; Rao, Gopalakrishna M.
Author_Institution :
NASA Goddard Space Flight Center, Greenbelt, MD, USA
Abstract :
Switching regulators were used to short-circuit the excess solar array current and control the charge to each of its two 28-volt, 4 ampere-hour (Ah) nickel-cadmium batteries. This caused approximately 10-million, very small battery charge-discharge cycles during the long sunlight periods of the highly elliptical, 24-hour orbit; a unique system influence that did not significantly degrade battery performance during the nearly 5-year mission life. Three very long eclipses at the beginning, middle and end of the mission, provided a unique opportunity to analyze the performance of the batteries
Keywords :
battery chargers; cadmium; nickel; rectifying circuits; secondary cells; short-circuit currents; space vehicle power plants; switching circuits; 28 V; AMPTE/CCE battery performance; Charge Composition Explorer; Ni-Cd; Ni-Cd batteries; battery charge-discharge cycles; battery charger performance; charge control; elliptical 24-hour orbit; excess solar array current; long eclipses; nickel-cadmium batteries; short-circuit current; sunlight periods; Batteries; Cadmium; Degradation; Performance analysis; Physics; Power systems; Regulators; Space charge; Space vehicles; Switches;
Conference_Titel :
Energy Conversion Engineering Conference, 1996. IECEC 96., Proceedings of the 31st Intersociety
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-3547-3
DOI :
10.1109/IECEC.1996.552917
