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SYSTEMS FOR AND METHODS OF CONTROLLING OPERATION OF A UPS

  • US 20090160254A1
  • Filed: 12/19/2007
  • Published: 06/25/2009
  • Est. Priority Date: 12/19/2007
  • Status: Active Grant
First Claim
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1. A method of controlling a voltage of a DC bus included in an uninterruptible power supply (“

  • UPS”

    ), the UPS including power factor control circuitry coupled to the DC bus, and an AC output, the method comprising acts of;

    determining a difference between instantaneous power supplied to the AC output at a first time and instantaneous power supplied to the AC output at a second time; and

    adjusting an operation of the power factor control circuitry to adjust the voltage of the DC bus based, at least partly, on the difference.

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