Power supply system, for segmented loads, having phantom redunda

Details Power supply system, for segmented loads, having phantom redunda Power supply system, for segmented loads, having phantom redunda

1987-11-09

1988-07-26

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural load circuit systems

Plural sources of supply

307 19, 307 42, 307 38, 307 64, 307 66, H02J 300

Patent

active

047602767

ABSTRACT:
A power supply system for segmented loads, and having phantom redundancy, is comprised of multiple sets of power supplies, with each set having an output terminal for furnishing load current at a certain voltage. A respective load is connected to the output terminal of each set, and each set also has a current-sharing circuit by which the load currents furnished from the supplies within a set are equalized. Further, all of the supplies from all the loads combined, minus any one supply, have a total current-furnishing capacity which meets the current requirements of all of the loads, but no set of supplies for any one load includes an extra or redundant supply. Also, switches are provided which selectively interconnect, and disconnect, the respecitve current-sharing circuits of the power supply sets such that the supplies of all connected sets furnish equalized load currents. In addition, variable resistors are provided which selectively interconnect the respective output terminals of the power supply sets through a conductance that increases from zero by a predetermined small step and thereafter progressively increases to a short circuit, and which selectively disconnects the respective output terminals though an oppositely varying conductance.

REFERENCES:
patent: 2957993 (1960-10-01), Sichling
patent: 3289006 (1966-11-01), Wilhelm et al.
patent: 3334241 (1967-08-01), Ussery
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patent: 3894244 (1975-07-01), Hill
patent: 3912940 (1975-10-01), Vince
patent: 4425613 (1984-01-01), Shelby
patent: 4659942 (1987-04-01), Volp
patent: 4670661 (1987-06-01), Ishikawa
patent: 4698738 (1987-10-01), Miller et al.

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