Patents by Inventor Beom-Seok CHAE

Beom-Seok CHAE 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).

  • Patent number: 9768679
    Abstract: An apparatus for restarting a medium voltage inverter is disclosed, wherein the medium voltage inverter can be restarted by estimating a rotor speed when an input power returns from an instantaneous defective state to a normal state, whereby a time to restart the medium voltage inverter can be reduced by a simple configuration to dispense with the need to wait until the rotor speed reaches zero speed.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: September 19, 2017
    Assignee: LSIS CO., LTD.
    Inventors: Beom Seok Chae, Seung Cheol Choi
  • Patent number: 9444388
    Abstract: A medium voltage inverter system is provided. The inverter system includes a controller configured to short-circuit the output terminal of the inverter unit when failure occurs, a supply unit configured to supply an electric power to the controller, and an auxiliary rectifying unit configured to rectify the AC voltage provided through the input terminal and to supply the rectified AC voltage to the supply unit.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: September 13, 2016
    Assignee: LSIS CO., LTD.
    Inventor: Beom Seok Chae
  • Publication number: 20160111953
    Abstract: An apparatus for restarting a medium voltage inverter is disclosed, wherein the medium voltage inverter can be restarted by estimating a rotor speed when an input power returns from an instantaneous defective state to a normal state, whereby a time to restart the medium voltage inverter can be reduced by a simple configuration to dispense with the need to wait until the rotor speed reaches zero speed.
    Type: Application
    Filed: September 25, 2015
    Publication date: April 21, 2016
    Applicant: LSIS CO., LTD.
    Inventors: BEOM SEOK CHAE, SEUNG CHEOL CHOI
  • Publication number: 20140292246
    Abstract: A medium voltage inverter system is provided. The inverter system includes a controller configured to short-circuit the output terminal of the inverter unit when failure occurs, a supply unit configured to supply an electric power to the controller, and an auxiliary rectifying unit configured to rectify the AC voltage provided through the input terminal and to supply the rectified AC voltage to the supply unit.
    Type: Application
    Filed: February 24, 2014
    Publication date: October 2, 2014
    Applicant: LSIS CO., LTD.
    Inventor: BEOM SEOK CHAE
  • Publication number: 20120317590
    Abstract: Merger of applications in a portable terminal includes selecting a basic application and an additional application by a user; obtaining information of the additional application; and performing a function of the additional application using the basic application and using the information of the additional application.
    Type: Application
    Filed: May 14, 2012
    Publication date: December 13, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Beom-Seok CHAE, Tae-Jin HYEON