Supply for providing uninterruptible d-c power to a load

Details Supply for providing uninterruptible d-c power to a load Supply for providing uninterruptible d-c power to a load

1982-09-20

1983-08-30

Gellner, Michael L.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

H02J 700

Patent

active

044018959

ABSTRACT:
A system for supplying uninterruptible d-c power to a load. When the system operates in its normal mode, d-c load power is provided by the combination of a rectifier and a power switch. The d-c output of the rectifier may be used by a d-c to d-c down converter to recharge and maintain a battery if a separately powered source is not available for that purpose. A d-c to d-c up converter provides a relatively high amplitude d-c voltage from the battery voltage. The amplitude of this voltage is lower than the amplitude of the d-c output of the rectifier in the normal mode. When the amplitude of the rectifier output falls below the d-c to d-c up converter output voltage, the system changes to its failure mode and the battery provides d-c power to the load. The operation of the down converter if it is included in the system is inhibited.

REFERENCES:
patent: 3339081 (1967-08-01), Borden et al.
patent: 3573483 (1971-04-01), White
patent: 3609386 (1971-09-01), Patlach
patent: 4313060 (1982-01-01), Fickenscher et al.

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