Paralleled DC power supplies sharing loads equally
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United States of America Patent
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-
Jan 6, 1987
Grant Date -
N/A
app pub date -
Nov 4, 1983
filing date -
Nov 4, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is a system of paralleled switching power supplies designed and controlled to have substantially identical output voltages and impedances so as to share the load equally. The output voltage of each supply is controlled to decrease linearly with increased output current, and the individual power supplies and their control circuits are designed and controlled to behave as identically as possible under the expected service conditions such that, under any given set of conditions, the output voltages and impedances of the several individual power supplies can be expected to be substantially identical and therefore they can be expected to share the load substantially equally. Provisions are made to make the control of the individual power supplies substantially independent of variations in the resistance of the power cables connecting them to the common load.
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