Patents by Inventor Changyong Wang

Changyong Wang 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).

  • Power converter system and method
    Publication number: 20070121353
    Abstract: A power system for providing an output power to a load is provided. The system comprises a generator configured to generate an alternating current input power and an power converter system coupled to the generator and configured to generate an output power and provide the output power to the load through at least one transformer. The system further comprises a converter control system coupled to the converter system and configured to drive the converter system in an interleaved pattern to reduce harmonic components in the output power and the alternating current input power.
    Type: Application
    Filed: November 30, 2005
    Publication date: May 31, 2007
    Inventors: Richard Zhang, Changyong Wang, Lei Li, James Lyons, Zhuohui Tan, Allen Ritter
  • Method and apparatus for anti-islanding protection of distributed generations
    Patent number: 7016793
    Abstract: An apparatus for anti-islanding protection of a distributed generation with respect to a feeder connected to an electrical grid is disclosed. The apparatus includes a sensor adapted to generate a voltage signal representative of an output voltage and/or a current signal representative of an output current at the distributed generation, and a controller responsive to the signals from the sensor. The controller is productive of a control signal directed to the distributed generation to drive an operating characteristic of the distributed generation out of a nominal range in response to the electrical grid being disconnected from the feeder.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: March 21, 2006
    Assignee: General Electric Company
    Inventors: Zhihong Ye, Vinod John, Changyong Wang, Luis Jose Garces, Rui Zhou, Lei Li, Reigh Allen Walling, William James Premerlani, Peter Claudius Sanza, Yan Liu, Mark Edward Dame
  • METHOD AND APPARATUS FOR ANTI-ISLANDING PROTECTION OF DISTRIBUTED GENERATIONS
    Publication number: 20060004531
    Abstract: An apparatus for anti-islanding protection of a distributed generation with respect to a feeder connected to an electrical grid is disclosed. The apparatus includes a sensor adapted to generate a voltage signal representative of an output voltage and/or a current signal representative of an output current at the distributed generation, and a controller responsive to the signals from the sensor. The controller is productive of a control signal directed to the distributed generation to drive an operating characteristic of the distributed generation out of a nominal range in response to the electrical grid being disconnected from the feeder.
    Type: Application
    Filed: October 1, 2003
    Publication date: January 5, 2006
    Inventors: Zhihong Ye, Vinod John, Changyong Wang, Luis Garces, Rui Zhou, Lei Li, Reigh Walling, William Premerlani, Peter Sanza, Yan Liu, Mark Dame