Patents by Inventor Chul Moon Lee

Chul Moon Lee 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 device for reclosing control using a harmonic ratio
    Patent number: 8743519
    Abstract: The reclosing control device configured to perform a reclosing control in case of a fault in a transmission line. Further, the reclosing control device includes a voltage detection unit configured to detect a faulted phase voltage waveform and extract a harmonic component contained in the faulted phase voltage waveform; a HR calculating unit configured to calculate ratio values between even harmonics and odd harmonics based on the extracted harmonic component; and a reclosing control unit configured to determine whether or not an arc is finally extinguished based on the calculated ratio value and perform a reclosing control depending on a result of the determination.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: June 3, 2014
    Assignee: Sungyunkwan University Foundation for Corporate Collaboration
    Inventors: Chul Hwan Kim, Chul Moon Lee, Hun Chul Seo
  • METHOD AND DEVICE FOR RECLOSING CONTROL USING A HARMONIC RATIO
    Publication number: 20120176712
    Abstract: The reclosing control device configured to perform a reclosing control in case of a fault in a transmission line. Further, the reclosing control device includes a voltage detection unit configured to detect a faulted phase voltage waveform and extract a harmonic component contained in the faulted phase voltage waveform; a HR calculating unit configured to calculate ratio values between even harmonics and odd harmonics based on the extracted harmonic component; and a reclosing control unit configured to determine whether or not an arc is finally extinguished based on the calculated ratio value and perform a reclosing control depending on a result of the determination.
    Type: Application
    Filed: July 11, 2011
    Publication date: July 12, 2012
    Applicant: Sungkyunkwan University Foundation for Corporate Collaboration
    Inventors: Chul Hwan Kim, Chul Moon Lee, Hun Chul Seo