Space Station Freedom photovoltaic power module design statusElectric power generation for the Space Station Freedom will be provided by four photovoltaic (PV) power modules using silicon solar cells during phase I operation. Each PV power module requires two solar arrays with 32,800 solar cells generating 18.75 kW of dc power for a total of 75 kW. A portion of this power will be stored in nickel-hydrogen batteries for use during eclipse, and the balance will be processed and converted to 20 kHz ac power for distribution to end users through the power management and distribution system. The design incorporates an optimized thermal control system, pointing and tracking provision with the application of gimbals, and the use of orbital replacement units to achieve modularization. The design status of the PV power module, as derived from major trade studies, is discussed at hardware levels ranging from component to system. Details of the design are presented where appropriate.
Document ID
19900051020
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Jimenez, Amador P. (Rockwell International Corp. Rocketdyne Div., Canoga Park, CA, United States)
Hoberecht, Mark A. (NASA Lewis Research Center Cleveland, OH, United States)