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AC and DC uninterruptible online power supplies

  • US 8,203,235 B2
  • Filed: 02/18/2009
  • Issued: 06/19/2012
  • Est. Priority Date: 04/11/2008
  • Status: Active Grant
First Claim
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1. A power supply comprising:

  • a rectifier that converts an alternating current input voltage to a first direct current voltage;

    an inverter that converts the first direct current voltage to an alternating current output voltage;

    a first set of output terminals that receives the alternating current output voltage;

    a second set of output terminals that receives the first direct current voltage; and

    a control module that monitors at least one of voltage, current and power of each of (i) the first set of output terminals and (ii) the second set of output terminals,wherein the rectifier receives a second direct current voltage from a backup power source based on the power supply operating in a predetermined condition, andwherein the control module, based on the at least one of voltage, current and power of each of (i) the first set of output terminals and (ii) the second set of output terminals, signalsthe rectifier to reduce a first maximum current output of the rectifier while maintaining supply of current out of the rectifier, andthe inverter to reduce a second maximum current output of the inverter while maintaining supply of current out of the inverter.

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