Patents by Inventor Hyun Jae Lim

Hyun Jae 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).

  • Publication number: 20250030369
    Abstract: A motor driving apparatus includes a motor having a plurality of windings, a dual inverter including a first inverter connected to first ends of the plurality of windings and a second inverter connected to second ends of the plurality of windings and configured to drive the motor through at least one of the first inverter or the second inverter according to a motor driving mode, and a controller configured to determine whether flux weakening control is performed according to an available voltage level of the dual inverter when a switching condition of the motor driving mode is satisfied and to perform the flux weakening control by linearly adjusting an output voltage level of the dual inverter for a preset time interval for which the flux weakening control is performed.
    Type: Application
    Filed: November 17, 2023
    Publication date: January 23, 2025
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Young Ho CHAE, Young Kwan KO, Hyun Jae LIM, Young Gi LEE, Joo Young PARK, Yong Jae LEE
  • Patent number: 12176826
    Abstract: An inverter driving apparatus includes an inverter having a plurality of legs respectively corresponding to each of a plurality of phases and the control unit generating space vector modulation signals based on a phase voltage command, each of the space vector modulation signals corresponding to each of the plurality of phases, respectively, determining whether an output voltage of the inverter corresponding to at least one space vector modulation signal of the space vector modulation is in a non-linear region by determining whether each voltage of the space vector modulation signals is included in a predetermined range, generating a terminal voltage command by determining whether or not to apply an offset voltage to each of the space vector modulation signals based on the determination of the non-linear region, and controlling a turn-on state of at least one switch included in each of the plurality of legs by modulating the terminal voltage command based on pulse width modulation.
    Type: Grant
    Filed: November 11, 2022
    Date of Patent: December 24, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Hyun Jae Lim, Yong Jae Lee, Young Ho Chae, Young Kwan Ko, Young Gi Lee
  • Patent number: 12119768
    Abstract: A motor driving apparatus driving a motor including a plurality of windings corresponding to each of phases, includes a mode change switch and a plurality of inverters that operate the motor in a closed end winding mode or an open end winding mode; and a controller configured for controlling the mode change switch and the plurality of inverters according to a first mode determination result based on a reverse magnetic flux and a second mode determination result according to an output power limit for each mode.
    Type: Grant
    Filed: August 16, 2022
    Date of Patent: October 15, 2024
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Jung Mo Yu, Yong Jae Lee, Hyun Jae Lim, Young Ho Chae, Young Kwan Ko, Jang Yoon Jeong
  • Publication number: 20240305219
    Abstract: An inverter driving device includes an inverter including a plurality of legs corresponding to a plurality of phases, and a controller that generates a plurality of pole voltage commands from a plurality of space vector modulation signals corresponding to the plurality of phases and modulates the pole voltage commands through pulse width modulation to control a turn-on state of switches included in the legs, wherein the controller is configured to generate a plurality of discontinuous modulation signals by applying an offset voltage for discontinuous modulation to the plurality of space vector modulation signals if at least one of a maximum voltage and a minimum voltage of the space vector modulation signals is not included in a predetermined linearity range, adjusts at least one of a maximum voltage and a minimum voltage of the discontinuous modulation signals, and outputs the adjusted discontinuous modulation signals as the pole voltage commands.
    Type: Application
    Filed: September 18, 2023
    Publication date: September 12, 2024
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Hyun Jae LIM, Joo Young PARK, Young Kwan KO
  • Publication number: 20240097580
    Abstract: An inverter driving apparatus includes an inverter having a plurality of legs respectively corresponding to each of a plurality of phases and the control unit generating space vector modulation signals based on a phase voltage command, each of the space vector modulation signals corresponding to each of the plurality of phases, respectively, determining whether an output voltage of the inverter corresponding to at least one space vector modulation signal of the space vector modulation is in a non-linear region by determining whether each voltage of the space vector modulation signals is included in a predetermined range, generating a terminal voltage command by determining whether or not to apply an offset voltage to each of the space vector modulation signals based on the determination of the non-linear region, and controlling a turn-on state of at least one switch included in each of the plurality of legs by modulating the terminal voltage command based on pulse width modulation.
    Type: Application
    Filed: November 11, 2022
    Publication date: March 21, 2024
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Hyun Jae LIM, Yong Jae LEE, Young Ho CHAE, Young Kwan KO, Young Gi LEE
  • Patent number: 11936321
    Abstract: An apparatus and method for suppressing torque generation of a three-phase motor, includes a torque determination device that determines a second torque value for suppressing a first torque value due to a zero phase sequence component current of the three-phase motor, a control amount determination device that determines a voltage control amount for generating the determined second torque value, and a controller that is configured to control the three-phase motor according to the determined voltage control amount.
    Type: Grant
    Filed: May 12, 2022
    Date of Patent: March 19, 2024
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Yong Jae Lee, Jung Hwi Kim, Hyun Jae Lim
  • Publication number: 20230253905
    Abstract: A motor driving apparatus driving a motor including a plurality of windings corresponding to each of phases, includes a mode change switch and a plurality of inverters that operate the motor in a closed end winding mode or an open end winding mode; and a controller configured for controlling the mode change switch and the plurality of inverters according to a first mode determination result based on a reverse magnetic flux and a second mode determination result according to an output power limit for each mode.
    Type: Application
    Filed: August 16, 2022
    Publication date: August 10, 2023
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Jung Mo YU, Yong Jae Lee, Hyun Jae Lim, Young Ho Chae, Young Kwan Ko, Jang Yoon Jeong
  • Publication number: 20230023574
    Abstract: An apparatus and method for suppressing torque generation of a three-phase motor, includes a torque determination device that determines a second torque value for suppressing a first torque value due to a zero phase sequence component current of the three-phase motor, a control amount determination device that determines a voltage control amount for generating the determined second torque value, and a controller that is configured to control the three-phase motor according to the determined voltage control amount.
    Type: Application
    Filed: May 12, 2022
    Publication date: January 26, 2023
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Yong Jae Lee, Jung Hwi Kim, Hyun Jae Lim
  • Patent number: 8125411
    Abstract: A plasma display apparatus and a driving method thereof are disclosed. The plasma display apparatus includes a plasma display panel comprising a first electrode and a second electrode, and a driver for applying a plurality of sustain signals to the second electrode while applying two consecutive sustain signals to the first electrode in a sustain period. A method of driving a plasma display apparatus includes applying a first sustain signal to a first electrode in a sustain period, after applying the first sustain signal to the first electrode, applying a plurality of sustain signals to a second electrode, and after applying the plurality of sustain signals to the second electrode, applying a second sustain signal consecutive to the first sustain signal to the first electrode.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: February 28, 2012
    Assignee: LG Electronics Inc.
    Inventors: Hyun Jae Lim, Muk Hee Kim, Yong Hyun Huh, Yun Kwon Jung
  • Patent number: 8044884
    Abstract: A plasma display apparatus comprises a driver for supplying a rising signal of finite slope and a scan signal of negative polarity to a scan electrode using one voltage source. The driver also supplies a falling signal to the scan electrode using the same voltage source. This apparatus may be used to perform a panel driving method that includes applying a rising signal, which rises from a first voltage to a second voltage, to the scan electrode during a reset period and applying a scan signal, of a magnitude at least substantially the same as a difference between the first voltage and the second voltage, to the scan electrode during an address period.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: October 25, 2011
    Assignee: LG Electronics Inc.
    Inventors: Yun Kwon Jung, Hyun Jae Lim, Sung Kwang Cho
  • Publication number: 20080042935
    Abstract: A plasma display apparatus and a method of driving the same are disclosed. The plasma display apparatus includes a plasma display panel including a first electrode and a second electrode, and a driver. The driver supplies a rising signal and a falling signal to the first electrode during a reset period, and supplies a positive polarity signal to the second electrode during the reset period. Further, the driver supplies a sustain bias signal to the second electrode after the passage of a predetermined duration of time from an end time point of the supplying of the positive polarity signal.
    Type: Application
    Filed: December 14, 2006
    Publication date: February 21, 2008
    Inventors: Muk Hee Kim, Yun Kwon Jung, Hyun Jae Lim, Yong Hyun Huh
  • Publication number: 20080012796
    Abstract: A plasma display apparatus and a driving method thereof are disclosed. The plasma display apparatus includes a plasma display panel comprising a first electrode and a second electrode, and a driver for applying a plurality of sustain signals to the second electrode while applying two consecutive sustain signals to the first electrode in a sustain period. A method of driving a plasma display apparatus includes applying a first sustain signal to a first electrode in a sustain period, after applying the first sustain signal to the first electrode, applying a plurality of sustain signals to a second electrode, and after applying the plurality of sustain signals to the second electrode, applying a second sustain signal consecutive to the first sustain signal to the first electrode.
    Type: Application
    Filed: January 18, 2007
    Publication date: January 17, 2008
    Applicant: LG ELECTRONICS INC.
    Inventors: Hyun Jae LIM, Muk Hee Kim, Yong Hyun Huh, Yun Kwon Jung
  • Publication number: 20070171151
    Abstract: A plasma display apparatus and a driving method thereof are provided. The plasma display apparatus comprises a plasma display panel comprising a scan electrode; and a driver for supplying a voltage of a rising signal with a gradually rising voltage and a voltage of a scan signal of a negative polarity direction, which are supplied to the scan electrode, using one voltage source. The plasma display apparatus comprises a plasma display panel comprising a scan electrode; and a driver for supplying a voltage of a rising signal with a gradually rising voltage, a voltage of a falling signal with a gradually falling voltage, and a voltage of a scan signal of a negative polarity direction, which are supplied to the scan electrode, using one voltage source.
    Type: Application
    Filed: June 6, 2006
    Publication date: July 26, 2007
    Inventors: Yun Kwon Jung, Hyun Jae Lim, Sung Kwang Cho