Outage management emergency power supply device

Details Outage management emergency power supply device Outage management emergency power supply device

1998-12-11

2000-10-17

Ballato, Josie

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

363125, H02J 700

Patent

active

061336513

ABSTRACT:
A compact, low-cost outage management emergency power supply device with a simple constitution is provided by connecting an auxiliary capacitor and charging battery to a DC link portion. In one embodiment, an auxiliary capacitor is connected in series via a switching circuit to a DC link portion which supplies direct-current voltage of a converter device which converts alternating-current voltage to direct-current voltage, and the input-output of current to the auxiliary capacitor is controlled by the switching circuit, so that the capacity of the additional auxiliary capacitor is not subject to limitations. Further, in another embodiment, a charging battery is connected to a DC link portion via a parallel circuit of a switching circuit or diode, and a resistor.

REFERENCES:
patent: 5278454 (1994-01-01), Strauss et al.
patent: 5391927 (1995-02-01), Kazwara
patent: 5811895 (1995-08-01), Suzuki et al.
Graf, Rudolf F., Encyclopedia of Electronic Circuits, Tab Books 1985, Figures 11-6 and 11-9, Jan. 1, 1985.

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