Patents by Inventor Yong-Cheul KWON

Yong-Cheul KWON 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 driving alternating-current motor
    Patent number: 8963459
    Abstract: A method of driving an alternating-current (AC) motor while periodically obtaining a rotator angle of the AC motor. The method includes: (a) driving the AC motor by a dS-axis voltage, which is a voltage for an exciting current in a stationary reference frame, and a qS-axis voltage, which is a voltage for generating a rotational force in the stationary reference frame, while sequentially applying different dS-axis voltages and different qS-axis voltages to the AC motor in a control injection period; and (b) obtaining a rotator angle by a dS-axis voltage value, a qS-axis voltage value, a dS-axis current value, and a qS-axis current value in the control injection period.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: February 24, 2015
    Assignees: Samsung Techwin Co., Ltd., Seoul National University Industry Foundation
    Inventors: Sang-Min Kim, Sung-Min Kim, Seung-Ki Sul, Seung-Eun Park, Yong-Cheul Kwon, Joon-Ho Park
  • METHOD AND APPARATUS FOR DRIVING ALTERNATING-CURRENT MOTOR
    Publication number: 20130057184
    Abstract: A method of driving an alternating-current (AC) motor while periodically obtaining a rotator angle of the AC motor. The method includes: (a) driving the AC motor by a dS-axis voltage, which is a voltage for an exciting current in a stationary reference frame, and a qS-axis voltage, which is a voltage for generating a rotational force in the stationary reference frame, while sequentially applying different the dS-axis voltages and different qS-axis voltages to the AC motor in a control injection period; and (b) obtaining a rotator angle by a dS-axis voltage value, a qS-axis voltage value, a dS-axis current value, and a qS-axis current value in the control injection period.
    Type: Application
    Filed: May 30, 2012
    Publication date: March 7, 2013
    Applicants: SEOUL NATIONAL UNIVERSITY INDUSTRY FOUNDATION, SAMSUNG TECHWIN CO., LTD.
    Inventors: Sang-Min KIM, Sung-Min KIM, Seung-Ki SUL, Seung-Eun PARK, Yong-Cheul KWON, Joon-Ho PARK