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UPS systems having multiple operation modes and methods of operating same

  • US 20070216228A1
  • Filed: 03/17/2006
  • Published: 09/20/2007
  • Est. Priority Date: 03/17/2006
  • Status: Active Grant
First Claim
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1. A power supply system comprising:

  • an AC input configured to be coupled to an AC source;

    an AC output configured to be coupled to a load;

    a UPS having an input coupled to the AC input and an output coupled to the AC output;

    a bypass circuit coupled between the AC input and the AC output and configured to open and close a bypass path therebetween; and

    a controller configured to control the UPS and the bypass circuit such that the UPS operates as an online UPS for a first input voltage magnitude condition at the AC input and as a standby UPS for a second input voltage magnitude condition at the AC input.

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