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Overview and evolution of the LeRC PMAD DC test bedSince the beginning of the Space Station Freedom Program (SSFP), the Lewis Research Center (LeRC) has been developed electrical power system test beds to support the overall design effort. Through this time, the SSFP has changed the design baseline numerous times, however, the test bed effort has endeavored to track these changes. Beginning in August 1989 with the baseline and an all DC system, a test bed was developed to support the design baseline. The LeRC power measurement and distribution (PMAD) DC test bed and the changes in the restructure are described. The changes included the size reduction of primary power channel and various power processing elements. A substantial reduction was also made in the amount of flight software with the subsequent migration of these functions to ground control centers. The impact of these changes on the design of the power hardware, the controller algorithms, the control software, and a description of their current status is presented. An overview of the testing using the test bed is described, which includes investigation of stability and source impedance, primary and secondary fault protection, and performance of a rotary utility transfer device. Finally, information is presented on the evolution of the test bed to support the verification and operational phases of the SSFP in light of these restructure scrubs.
Document ID
19930042102
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Soeder, James F.
(NASA Lewis Research Center Cleveland, OH, United States)
Frye, Robert J.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1992
Publication Information
Publication: In: IECEC '92; Proceedings of the 27th Intersociety Energy Conversion Engineering Conference, San Diego, CA, Aug. 3-7, 1992. Vol. 6 (A93-25851 09-44)
Publisher: Society of Automotive Engineers, Inc.
Subject Category
Ground Support Systems And Facilities (Space)
Accession Number
93A26099
Funding Number(s)
PROJECT: RTOP 474-42-10
Distribution Limits
Public
Copyright
Other

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