Methods and systems for using a tapped transformer to generate voltage sags
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United States of America Patent
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Jul 9, 2019
Grant Date -
Apr 5, 2018
app pub date -
Sep 30, 2016
filing date -
Sep 30, 2016
priority date (Note) -
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Abstract
A device includes a three phase supply input including a first phase input, a second phase input, and a third phase input. The device further includes a three phase supply output including a first phase output, a second phase output, and a third phase output. The device further includes a three-phase wye-connected auto-transformer having windings including a first winding, a second winding, and a third winding. At least one of the windings is rated for at least a maximum line to line voltage of the three phase supply input. The other two windings are rated for at least a maximum line to neutral voltage of the three phase supply input. One or more of the windings of the three-phase wye-connected auto-transformer are configured to be tapped to generate a voltage sag output as the three phase supply output.
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