Charging circuit in uninterruptible power supply system

Details Charging circuit in uninterruptible power supply system Charging circuit in uninterruptible power supply system

2007-06-12

2007-06-12

Deberadinis, Robert L. (Department: 2836)

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

C307S072000, C320S137000, C363S098000, C363S132000

Reexamination Certificate

active

10820496

ABSTRACT:
A charging circuit in a back-up power system is provided. The charging circuit includes an output terminal electrically connected to a main power for providing an AC output voltage, a transformer having a secondary electrically connected to the output terminal, an energy storage and supply device providing a DC voltage, an inverter having an output electrically connected to a primary of the transformer and an input electrically connected to the energy storage and supply device and including four gate control switch devices to form a bridge switching device, a bridge rectifier having an input electrically connected to the output of the inverter in parallel, and a charging switch device electrically connected to an output of the bridge rectifier in parallel so as to charge the electrical energy storage and supply device through one of a conduction state and a cut-off state of said charging switch device.

REFERENCES:
patent: 5302858 (1994-04-01), Folts

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