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Inverter having center switch and uninterruptible power supply implementing same

  • US 6,266,260 B1
  • Filed: 09/01/2000
  • Issued: 07/24/2001
  • Est. Priority Date: 09/03/1999
  • Status: Expired due to Term
First Claim
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1. An inverter, comprising:

  • an input for receiving electric power from an external source of electric power;

    a return line to which the external source of electric power is referenced;

    an output for supplying electric power to a connected load;

    a first and a second bus coupled to the input;

    a pair of output switching elements operable to selectively couple the first and the second bus to the output;

    a pair of energy storage devices coupled between each of the first and the second bus and the return line;

    a center switch circuit interposed between the pair of energy storage devices and the return line; and

    a controller operatively coupled to the pair of output switching elements and the center switch circuit for controlling a state thereof; and

    wherein the center switch circuit is operable to selectively enable and disable power flow from the energy storage devices to the first and the second bus.

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