Paralleled DC power supplies sharing loads equally

Details Paralleled DC power supplies sharing loads equally Paralleled DC power supplies sharing loads equally

1983-11-04

1987-01-06

Wong, Peter S.

Electric power conversion systems

Current conversion

Having plural converters for single conversion

307 58, 307 82, H02J 110

Patent

active

046351787

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.

REFERENCES:
patent: 3521150 (1970-07-01), Bates
patent: 3824450 (1974-07-01), Johnson et al.
patent: 3840797 (1974-10-01), Aggen et al.
patent: 4163906 (1979-08-01), Shimamura
patent: 4194147 (1980-03-01), Payne et al.
patent: 4270165 (1981-05-01), Carpenter et al.
patent: 4359679 (1982-11-01), Regan
patent: 4371919 (1983-02-01), Andrews et al.
patent: 4468722 (1984-08-01), Kammiller

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