Patents by Inventor Young Kwan Ko

Young Kwan Ko 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
  • Publication number: 20240424930
    Abstract: An electrified vehicle may include: a main battery and an auxiliary battery; a motor system including a dual inverter connected to the main battery and driving a motor depending on a motor driving mode, and a transfer switch for switching between first and second driving modes included in the motor driving mode; and a charging switch connected between the motor system and the auxiliary battery, and configured to form a boost charging path connected from the auxiliary battery to the main battery through the motor system when the first driving mode switches to a charging mode while driving.
    Type: Application
    Filed: November 14, 2023
    Publication date: December 26, 2024
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Yong Jae LEE, Young Kwan KO, Byung Kwan SON, Jang Yoon JEONG, Ho Tae CHUN, Yoo Jong 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: 12143041
    Abstract: A motor driving apparatus driving a motor that has a plurality of windings respectively corresponding to a plurality of phases includes a first inverter including a plurality of first switching elements and connected to a first end of each of the windings, a second inverter including a plurality of second switching elements and connected to a second end of each of the windings, and a controller determining a voltage command of the first inverter based on a voltage command of the motor and the active vector corresponding to a duty of the second switching elements and controlling the first switching elements through pulse width modulation based on the voltage command of the first inverter.
    Type: Grant
    Filed: January 19, 2023
    Date of Patent: November 12, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Young Kwan Ko, Yong Jae 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: 20240190294
    Abstract: An electrified vehicle includes a motor including a plurality of windings corresponding to each of phases; an inverter including a DC terminal connected to a main battery, and a plurality of legs connected to each end of the windings; a charging switch connected between one electrode of an auxiliary battery and a neutral terminal of the motor, and a controller configured to turn on the charging switch and to apply a DC offset to each of phase currents of the motor having the phases when the charging mode is performed while driving.
    Type: Application
    Filed: July 6, 2023
    Publication date: June 13, 2024
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Yong Jae LEE, Young Kwan KO, Byung Kwan SON, Jang Yoon JEONG, Ho Tae CHUN, Yoo Jong LEE
  • Publication number: 20240190274
    Abstract: An electric vehicle includes a main battery and an auxiliary battery, a motor system including a motor and an inverter, and a controller which is configured to control an external voltage to be applied to the main battery or the auxiliary battery according to a level of the external voltage when a charging mode for charging the main battery and the auxiliary battery is performed, wherein the motor system is configured to step down and output a voltage of the main battery to the auxiliary battery when the external voltage is applied to the main battery, and is configured to boost and output a voltage of the auxiliary battery to the main battery when the external voltage is applied to the auxiliary battery.
    Type: Application
    Filed: July 5, 2023
    Publication date: June 13, 2024
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Yong Jae LEE, Young Kwan KO, Byung Kwan SON, Jang Yoon JEONG, Ho Tae CHUN, Yoo Jong LEE
  • 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
  • Publication number: 20240039447
    Abstract: A motor driving apparatus driving a motor that has a plurality of windings respectively corresponding to a plurality of phases includes a first inverter including a plurality of first switching elements and connected to a first end of each of the windings, a second inverter including a plurality of second switching elements and connected to a second end of each of the windings, and a controller determining a voltage command of the first inverter based on a voltage command of the motor and the active vector corresponding to a duty of the second switching elements and controlling the first switching elements through pulse width modulation based on the voltage command of the first inverter.
    Type: Application
    Filed: January 19, 2023
    Publication date: February 1, 2024
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Young Kwan KO, Yong Jae LEE
  • Patent number: 11876468
    Abstract: A motor driving apparatus which drives a motor having a plurality of windings corresponding to a plurality of phases includes: a first inverter having a plurality of first switching elements and connected to a first end of each winding; a second inverter having a plurality of second switching elements and connected to a second end of each winding; and a controller configured to control pulse width modulation, by distributing a preset voltage command of the motor into a voltage command of the first inverter and a voltage command of the second inverter at the same rate and by generating duties of the first switching elements, wherein the controller determines the duties of the second switching elements and determines the duties of the first switching elements on and the duties of the first switching elements.
    Type: Grant
    Filed: June 15, 2022
    Date of Patent: January 16, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Yong Jae Lee, Joo Young Park, Young Kwan Ko
  • 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: 20230023016
    Abstract: A motor driving apparatus which drives a motor having a plurality of windings corresponding to a plurality of phases includes: a first inverter having a plurality of first switching elements and connected to a first end of each winding; a second inverter having a plurality of second switching elements and connected to a second end of each winding; and a controller configured to control pulse width modulation, by distributing a preset voltage command of the motor into a voltage command of the first inverter and a voltage command of the second inverter at the same rate and by generating duties of the first switching elements, wherein the controller determines the duties of the second switching elements and determines the duties of the first switching elements on and the duties of the first switching elements.
    Type: Application
    Filed: June 15, 2022
    Publication date: January 26, 2023
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Yong Jae LEE, Joo Young PARK, Young Kwan KO
  • Publication number: 20220386607
    Abstract: The present invention relates to a novel nicotinamide compound, a method for preparing the same, and a herbicide comprising the compound. The compound of the present invention is useful as a herbicide for foliar treatment or soil treatment because it has high safety for wheat or corn and has excellent herbicidal activity against grassy weeds, sedge weeds or broadleaf weeds.
    Type: Application
    Filed: October 21, 2020
    Publication date: December 8, 2022
    Inventors: Young Kwan KO, Eun Ae KIM, Ill Young LEE, Hee Nam LIM, Jung Sub CHOI, Jee Hee SUH, Nack Jeong KIM, Dong Wan KOO, Hyun Jin KIM, Gyu Hwan YON, Jae Deok KIM, Seungae OH, So-Young LEE, Chan Yong PARK, Yun Kyoung HWANG, Byung Hoon AHN, Ah Reum KIM, Hye Ji HAN, Sungjun PARK, Junhyuk CHOI, Jisoo LIM, Mi Sook HONG
  • Patent number: 11292475
    Abstract: A control system for reducing drive shaft vibration of an environment-friendly vehicle includes: a drive shaft speed extraction unit that extracts an actual drive shaft speed of a motor and extracts a drive shaft speed from which a forced vibration component that is to be transferred by an engine to the drive shaft is removed; a model speed computation unit that calculates a model speed of the drive shaft; a free vibration computation unit that computes a free vibration component on the basis of deviation between the drive shaft speed and the calculated model speed; and a first torque computation unit that calculates, from the free vibration component, a free vibration reduction compensation torque for reducing the drive shaft vibration.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: April 5, 2022
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Young Kwan Ko, Jun Mo An, Byung Hoon Yang, Hyung Souk Kang
  • Patent number: 11167651
    Abstract: A method of controlling vibration reduction of a vehicle is capable of efficiently reducing vibration occurring when entering a P range on a ramp. The method includes: when an input to a parking range is received, determining whether or not a predetermined condition for entering a vibration reduction control mode is satisfied; when the entering condition is satisfied, calculating a motor torque for reducing vibration due to backlash by using the driving information; controlling a driving motor so as to output the calculated motor torque; controlling the parking device such that the parking range is engaged; determining whether or not a brake is released; and if the brake is released, reducing a motor torque output by the driving motor so that vibration due to the backlash is reduced.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: November 9, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Young Kwan Ko, Jun Mo An, Woo Cheol Cho, Soo Lim Han
  • Publication number: 20210163012
    Abstract: A control system for reducing drive shaft vibration of an environment-friendly vehicle includes: a drive shaft speed extraction unit that extracts an actual drive shaft speed of a motor and extracts a drive shaft speed from which a forced vibration component that is to be transferred by an engine to the drive shaft is removed; a model speed computation unit that calculates a model speed of the drive shaft; a free vibration computation unit that computes a free vibration component on the basis of deviation between the drive shaft speed and the calculated model speed; and a first torque computation unit that calculates, from the free vibration component, a free vibration reduction compensation torque for reducing the drive shaft vibration.
    Type: Application
    Filed: August 14, 2020
    Publication date: June 3, 2021
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Young Kwan Ko, Jun Mo An, Byung Hoon Yang, Hyung Souk Kang
  • Patent number: 10967847
    Abstract: A method for controlling revolutions per minute (RPM) flare, in which an RPM of a transmission increases due to clutch slip, for a hybrid vehicle can include: determining whether gear-shifting is performed in a transmission of the hybrid vehicle; detecting whether RPM flare of the transmission occurs when it is determined that the gear-shifting is performed; and controlling a torque of a motor of the hybrid vehicle so as to reduce the RPM flare of the transmission by reducing the torque of the motor when the RPM flare of the transmission is detected.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: April 6, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Won Woo Seo, Young Kwan Ko, Hoon Han, Jae Young Choi
  • Publication number: 20200346549
    Abstract: A method of controlling vibration reduction of a vehicle is capable of efficiently reducing vibration occurring when entering a P range on a ramp. The method includes: when an input to a parking range is received, determining whether or not a predetermined condition for entering a vibration reduction control mode is satisfied; when the entering condition is satisfied, calculating a motor torque for reducing vibration due to backlash by using the driving information; controlling a driving motor so as to output the calculated motor torque; controlling the parking device such that the parking range is engaged; determining whether or not a brake is released; and if the brake is released, reducing a motor torque output by the driving motor so that vibration due to the backlash is reduced.
    Type: Application
    Filed: October 24, 2019
    Publication date: November 5, 2020
    Inventors: Young Kwan Ko, Jun Mo An, Woo Cheol Cho, Soo Lim Han
  • Publication number: 20200331454
    Abstract: An active vibration reduction control apparatus of a hybrid vehicle includes: a vibration extraction device configured to extract a first vibration signal from a motor connected to a drive shaft of the hybrid vehicle; a torque generator configured to generate a first torque for vibration reduction based on the first vibration signal; and a controller configured to apply the first torque to the motor.
    Type: Application
    Filed: October 30, 2019
    Publication date: October 22, 2020
    Inventors: Jun Mo AN, Young Kwan KO, Byung Hoon YANG, Hyung Souk KANG