SHUTTLE-ELECTRICAL POWER ANALYSIS PROGRAM (SEPAP) SINGLE STRING CIRCUIT ANALYSIS REPORT

摘要

An analysis was conducted of the electrical bus charac¬teristics of one string of the normal three string Shuttle electrical power distribution system. Nominal, minimum, and maximum instantaneous power and voltage levels were determined for each of the 23 Sortie 2A mission phases. A computer program was utilized which contains in its data base models of the distribution network, the fuel cell, and the inverter, plus information on individual component electrical parameters. Although only gross circuit characteristics were determined due to the preliminary nature of the input data, the range of power and voltage levels possible is of interest in the areas of bus and wiring sizing and load management. The results obtained for the single string are considered to be typical of the other two strings of the distribution system. The secondary objective of the effort, familiarity with the analysis computer program and files, was met and will be of benefit when the full computer analysis capability is available.