Patents by Inventor Chang-Yeol Lim

Chang-Yeol Lim 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).

  • Disc wound transformer with improved cooling
    Patent number: 8111123
    Abstract: A method of manufacturing a transformer that includes forming a disc-wound coil using a plurality of pre-formed cooling ducts. Each cooling duct may be supported by a support pipe secured between walls of the cooling duct, or by a removable insert. First and second conductor layers are formed, each of which include plurality of disc windings arranged in an axial direction of the disc-wound coil. A spacer layer is formed between the first and second conductor layers to form a plurality of axially-extending passages. The cooling ducts are slid into the axially-extending passages so as to be disposed between the first and second conductor layers.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: February 7, 2012
    Assignee: ABB Technology AG
    Inventors: Jong-Yun Lim, Chang-Yeol Lim, Young-Jin Ha, Chang-Hyeon Lee, Charles W. Johnson, Hae-Sun Yang, Rafael Murillo, Robert C. Ballard
  • DISC WOUND TRANSFORMER WITH IMPROVED COOLING
    Publication number: 20110063062
    Abstract: A method of manufacturing a transformer that includes forming a disc-wound coil using a plurality of pre-formed cooling ducts. Each cooling duct may be supported by a support pipe secured between walls of the cooling duct, or by a removable insert. First and second conductor layers are formed, each of which include plurality of disc windings arranged in an axial direction of the disc-wound coil. A spacer layer is formed between the first and second conductor layers to form a plurality of axially-extending passages. The cooling ducts are slid into the axially-extending passages so as to be disposed between the first and second conductor layers.
    Type: Application
    Filed: September 10, 2010
    Publication date: March 17, 2011
    Applicant: ABB TECHNOLOGY AG
    Inventors: Jong-Yun Lim, Chang-Yeol LIM, Young-Jin HA, Chang-Hyeon Lee, Charles W. Johnson, Hae-Sun Yang, Rafael Murillo, Robert C. Ballard