Continuously operating standby A-C power system

Details Continuously operating standby A-C power system Continuously operating standby A-C power system

1981-07-13

1982-12-28

Gellner, Michael L.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307 87, H02J 906

Patent

active

043663893

ABSTRACT:
A continuously operating standby A-C power system which uses a single loop responsive to the system's input and output A-C voltages, the voltage of the battery included in the standby portion of the supply and the amplitude and frequency of the input A-C voltage for controlling the phase relationship between the input and output voltages. When the input A-C voltage is acceptable in both amplitude and frequency, the loop is closed. When the voltage becomes unacceptable, the loop opens. When the voltage returns to acceptability after a period of nonacceptability, circuitry is included in the system for slowly closing the loop.

REFERENCES:
patent: 3337743 (1967-08-01), Rolfes
patent: 3348060 (1967-10-01), Jamieson
patent: 3389268 (1968-06-01), Jamieson et al.

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