Systems and methods for uninterruptible power supply control
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United States of America Patent
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Feb 14, 2012
Grant Date -
Aug 13, 2009
app pub date -
Feb 7, 2008
filing date -
Feb 7, 2008
priority date (Note) -
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Abstract
Systems and methods are provided for distributing power to a load by controlling an uninterruptible power supply that has an inverter and a filter, where the filter has an inductor and a capacitor. The systems and methods apply a pulse width modulation control signal to the inverter, sample inverter inductor current and compare the inductor current to a reference current. A duty cycle of the pulse width modulation control signal is adjusted to drive the inductor current at a second sampling time to a value substantially equal to a reference current at a first sampling time. The systems and methods can filter harmonic distortion from output signals and control uninterruptible power supply output.
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