Apparatus and methods for backfeed detection in and control of uninterruptible power systems

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United States of America Patent

PATENT NO 9627923
APP PUB NO 20140021789A1
SERIAL NO

13946036

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Abstract

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An apparatus and method for backfeed detection in, and control of, an uninterruptible power system is disclosed. An adaptive controller in an uninterruptible power system enables delivery of power from a second, backup, power source, to loads connected to an output of the system, when a first, primary, input source is detected to be in a fault condition. Subsequent to enabling the second power source, and within a time interval that is less than one AC period following the detection of the input fault, the controller may sense and measure a backfeed of energy from the second source to the first source and may adapt a subsequent fault response based upon the measurement of the backfeed. Adapting the subsequent response may comprise adapting a response to a fault at the output. The subsequent response may comprise disabling or enabling delivery of energy from the second source.

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Patent Owner(s)

Patent OwnerAddress
ACTIVE POWER INCAUSTIN TX 78758

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ault, Terry Austin, US 2 27
Edley, Stephen Austin, US 1 12
Greer, Richard Austin, US 2 29

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