Patents by Inventor Pothapragada Pavana Kumar

Pothapragada Pavana Kumar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for providing uninterruptible power
    Patent number: 8143744
    Abstract: At least one aspect is directed to an uninterruptible power supply that includes a first input having an input line connection and an input neutral connection to receive a first input voltage from a first voltage source, a second input to receive a second input voltage from a second voltage source, and a boost circuit configured to provide a positive output DC voltage with respect to the input neutral connection and a negative output DC voltage with respect to the input neutral connection in both a line mode of operation and a backup mode of operation. The power supply also includes a first connection circuit to couple the first input to the boost circuit in the line mode of operation, and a second connection circuit to couple the second input to the boost circuit in the backup mode of operation, the second connection circuit being configured to isolate the second voltage source from the input neutral connection in the line mode of operation.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: March 27, 2012
    Assignee: American Power Conversion Corporation
    Inventors: Henning Roar Nielsen, Ranganathan Gurunathan, Pothapragada Pavana Kumar, Damir Klikic
  • METHOD AND APPARATUS FOR PROVIDING UNINTERRUPTIBLE POWER
    Publication number: 20100295374
    Abstract: At least one aspect is directed to an uninterruptible power supply that includes a first input having an input line connection and an input neutral connection to receive a first input voltage from a first voltage source, a second input to receive a second input voltage from a second voltage source, and a boost circuit configured to provide a positive output DC voltage with respect to the input neutral connection and a negative output DC voltage with respect to the input neutral connection in both a line mode of operation and a backup mode of operation. The power supply also includes a first connection circuit to couple the first input to the boost circuit in the line mode of operation, and a second connection circuit to couple the second input to the boost circuit in the backup mode of operation, the second connection circuit being configured to isolate the second voltage source from the input neutral connection in the line mode of operation.
    Type: Application
    Filed: April 26, 2010
    Publication date: November 25, 2010
    Applicant: AMERICAN POWER CONVERSION CORPORATION
    Inventors: Henning Roar Nielsen, Ranganathan Gurunathan, Pothapragada Pavana Kumar, Damir Klikic
  • Method and apparatus for providing uninterruptible power
    Patent number: 7705489
    Abstract: At least one aspect is directed to an uninterruptible power supply that includes a first input having an input line connection and an input neutral connection to receive a first input voltage from a first voltage source, a second input to receive a second input voltage from a second voltage source, and a boost circuit configured to provide a positive output DC voltage with respect to the input neutral connection and a negative output DC voltage with respect to the input neutral connection in both a line mode of operation and a backup mode of operation. The power supply also includes a first connection circuit to couple the first input to the boost circuit in the line mode of operation, and a second connection circuit to couple the second input to the boost circuit in the backup mode of operation, the second connection circuit being configured to isolate the second voltage source from the input neutral connection in the line mode of operation.
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: April 27, 2010
    Assignee: American Power Conversion Corporation
    Inventors: Henning Roar Nielsen, Ranganathan Gurunathan, Pothapragada Pavana Kumar, Damir Klikic
  • Method and apparatus for providing uninterruptible power
    Publication number: 20080061628
    Abstract: At least one aspect is directed to an uninterruptible power supply that includes a first input having an input line connection and an input neutral connection to receive a first input voltage from a first voltage source, a second input to receive a second input voltage from a second voltage source, and a boost circuit configured to provide a positive output DC voltage with respect to the input neutral connection and a negative output DC voltage with respect to the input neutral connection in both a line mode of operation and a backup mode of operation. The power supply also includes a first connection circuit to couple the first input to the boost circuit in the line mode of operation, and a second connection circuit to couple the second input to the boost circuit in the backup mode of operation, the second connection circuit being configured to isolate the second voltage source from the input neutral connection in the line mode of operation.
    Type: Application
    Filed: September 8, 2006
    Publication date: March 13, 2008
    Applicant: American Power Conversion Corporation
    Inventors: Henning Roar Nielsen, Ranganathan Gurunathan, Pothapragada Pavana Kumar, Damir Klikic