Patents by Inventor Tibor Bolfan

Tibor Bolfan 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 power module output power regulation
    Patent number: 9537420
    Abstract: A method and apparatus for modifying power produced by a power converter. In one embodiment, the method comprises comparing a line voltage level to a first threshold and a second threshold, wherein the line voltage level is a level of a line voltage at an output of a power converter; and modifying power produced by the power converter by (i) a first modification when the line voltage level is between the first and the second thresholds, and (ii) a second modification when the line voltage level exceeds the second threshold.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: January 3, 2017
    Assignee: Enphase Energy, Inc.
    Inventors: Andrew Barnes, Tibor Bolfan
  • Method and apparatus for identifying an islanding condition
    Patent number: 8195414
    Abstract: A method and apparatus for identifying an islanding condition. In one embodiment, the method comprises altering a phase error response within a phase locked loop (PLL), and determining whether the islanding condition exists based on the altered phase error response.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: June 5, 2012
    Assignee: Enphase Energy, Inc.
    Inventors: Martin Fornage, Mudhafar Hassan-Ali, Tibor Bolfan
  • Method and apparatus for anti-islanding of distributed power generation systems
    Publication number: 20110101786
    Abstract: A method and apparatus for identifying an islanding condition. In one embodiment, the method comprises altering a phase error response within a phase locked loop (PLL), and determining whether the islanding condition exists based on the altered phase error response.
    Type: Application
    Filed: January 10, 2011
    Publication date: May 5, 2011
    Inventors: Martin Fornage, Mudhafar Hassan-Ali, Tibor Bolfan
  • Method and apparatus for anti-islanding of distributed power generation systems
    Patent number: 7899632
    Abstract: A method and apparatus for anti-islanding of distributed power generation systems having an inverter comprising a phase locked loop (PLL), a phase shift generator for injecting a phase shift into the PLL during at least one sample period, and a phase error signature monitor for monitoring at least one phase error response of the PLL during the at least one sample period.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: March 1, 2011
    Assignee: Enphase Energy, Inc.
    Inventors: Martin Fornage, Mudhafar Hassan-Ali, Tibor Bolfan
  • Method and apparatus for anti-islanding of distributed power generation systems
    Publication number: 20090021877
    Abstract: A method and apparatus for anti-islanding of distributed power generation systems having an inverter comprising a phase locked loop (PLL), a phase shift generator for injecting a phase shift into the PLL during at least one sample period, and a phase error signature monitor for monitoring at least one phase error response of the PLL during the at least one sample period.
    Type: Application
    Filed: July 16, 2008
    Publication date: January 22, 2009
    Inventors: Martin Fornage, Mudhafar Hassan-Ali, Tibor Bolfan