Patents by Inventor Kwang-Ha PARK

Kwang-Ha PARK 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).

  • Bent rotor straightening method using low frequency induction heating and bent rotor straightening apparatus using same
    Patent number: 11465187
    Abstract: A bent rotor straightening method using low-frequency induction heating and a bent rotor straightening apparatus using the method are proposed. The bent rotor straightening method using low-frequency induction heating according to an embodiment of the present invention includes: calculating a heating speed when a first target temperature for correcting bending of a rotor using low-frequency induction heating is set; maintaining the first target temperature for a heating time determined on the basis of a diameter of the rotor when the first target temperature is reached, when performing primary thermal correction at the heating speed; checking whether a bending amount of the rotor reaches a predetermined critical value in accordance the result of performing the primary thermal correction; and finishing correction of bending of the rotor in accordance with the result of checking the bending amount of the rotor.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: October 11, 2022
    Assignees: KOREA ELECTRIC POWER CORPORATION, KOREA MIDLAND POWER CO., LTD., KOREA WESTERN POWER CO., LTD., KOREA SOUTH POWER CO., LTD., KOREA EAST-WEST POWER CO., LTD.
    Inventors: Kwang-Ha Park, Doo-Young Kim, Hyun-Ku Park, Jung-Hwan Kim, Yong-Hee Jang, Jun-Su Park
  • BENT ROTOR STRAIGHTENING METHOD USING LOW FREQUENCY INDUCTION HEATING AND BENT ROTOR STRAIGHTENING APPARATUS USING SAME
    Publication number: 20200338614
    Abstract: A bent rotor straightening method using low-frequency induction heating and a bent rotor straightening apparatus using the method are proposed. The bent rotor straightening method using low-frequency induction heating according to an embodiment of the present invention includes: calculating a heating speed when a first target temperature for correcting bending of a rotor using low-frequency induction heating is set; maintaining the first target temperature for a heating time determined on the basis of a diameter of the rotor when the first target temperature is reached, when performing primary thermal correction at the heating speed; checking whether a bending amount of the rotor reaches a predetermined critical value in accordance the result of performing the primary thermal correction; and finishing correction of bending of the rotor in accordance with the result of checking the bending amount of the rotor.
    Type: Application
    Filed: March 20, 2019
    Publication date: October 29, 2020
    Inventors: Kwang-Ha PARK, Doo-Young KIM, Hyun-Ku PARK, Jung-Hwan KIM, Yong-Hee JANG, Jun-Su PARK