Flux control system for active voltage conditioning
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United States of America Patent
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Mar 27, 2012
Grant Date -
Feb 4, 2010
app pub date -
Aug 20, 2009
filing date -
Feb 20, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A flux control system for a three-phase active voltage conditioner that utilizes an injection transformer to apply calculated compensation voltage to a mains supply. The flux control system is configured to modify the compensation voltage to be applied to at least one primary terminal of the injection transformer so as to avoid magnetic saturation of the injection transformer. The flux control system includes magnetic flux model modules that are configured to calculate a core flux level of the injection transformer, flux offset modules that are configured to apply a first modification to the compensation voltage to gradually reduce any flux offset in the injection transformer, and peak flux modules that are configured to apply a second modification to the compensation voltage to prevent the core flux level from exceeding a preset range.
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