Systems for and methods of controlling operation of a UPS

Details Systems for and methods of controlling operation of a UPS Systems for and methods of controlling operation of a UPS

2007-12-19

2009-11-10

DeBeradinis, Robert L. (Department: 2836)

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

Reexamination Certificate

active

07615891

ABSTRACT:
A UPS includes an AC output, power factor control circuitry; and a DC bus coupled to the power factor control circuitry where the power factor control circuitry is configured to determine a difference in instantaneous power supplied to the AC output and to adjust a voltage of the DC bus based, at least partly, on the difference. In one embodiment, the UPS includes a single phase AC input. In another embodiment, the power factor control circuitry is configured to determine a cumulative difference in instantaneous power supplied to the AC output.

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International Search Report for the corresponding PCT Application PCT/2008/085392 mailed Apr. 16, 2009.

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