Power supply control systems

Details Power supply control systems Power supply control systems

1988-04-15

1989-09-12

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural supply circuits or sources

307 52, 307 53, 307 66, 307 87, 307 60, 323907, 363 71, 363 81, H02J 104

Patent

active

048662950

ABSTRACT:
A power supply control system controls at least two variable power supplies feeding a common load connected to a common output terminal. A sensor monitors the current drawn by each power supply in dependence upon the difference detected in a sense to reduce the difference to zero. A summing circuit sums the outputs of all the comparators. Another comparator compares the output of the summing circuit with a zero level and produces an output to modify the reference signal. The loops comprising each comparator and the further comparator each act in a sense to reduce the output of the summing circuit to zero and in this way the system tends to maintain a balanced output from all supplies so that each supply shares the power requirement of the load according to its capacity while at the same time maintaining the output voltage at a level corresponding to the average of the nominal voltages of the individual supplies.

REFERENCES:
patent: 4012685 (1977-03-01), Nercessian
patent: 4207475 (1980-06-01), Nercessian
patent: 4609828 (1986-09-01), Small
patent: 4618779 (1986-10-01), Wiscombe
patent: 4635178 (1987-01-01), Greenhalgh
patent: 4748340 (1988-05-01), Schmidt
patent: 4754161 (1988-06-01), Fox

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