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The Electric Power System of the International Space Station: A Platform for Power Technology DevelopmentThe electrical power system developed for the International Space Station represents the largest space-based power system ever designed and, consequently, has driven some key technology aspects and operational challenges. The full U.S.-built system consists of a 160-Volt dc primary network, and a more tightly regulated 120-Volt dc secondary network. Additionally, the U.S. system interfaces with the 28-Volt system in the Russian segment. The international nature of the Station has resulted in modular converters, switchgear, outlet panels, and other components being built by different countries, with the associated interface challenges. This paper provides details of the architecture and unique hardware developed for the Space Station, and examines the opportunities it provides for further long-term space power technology development, such as concentrating solar arrays and flywheel energy storage systems.
Document ID
Document Type
Preprint (Draft being sent to journal)
Gietl, Eric B.
(Boeing Co. Houston, TX United States)
Gholdston, Edward W.
(Boeing Co. Canoga Park, CA United States)
Manners, Bruce A.
(NASA Glenn Research Center Cleveland, OH United States)
Delventhal, Rex A.
(NASA Glenn Research Center Cleveland, OH United States)
Date Acquired
September 7, 2013
Publication Date
June 1, 2000
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
NAS 1.15:210209
Meeting Information
Aerospace(Big Sky, MT)
Funding Number(s)
PROJECT: RTOP 478-29-10
Distribution Limits
Work of the US Gov. Public Use Permitted.
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