Patents by Inventor Do Hyeon HAM

Do Hyeon HAM 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: 20260196948
    Abstract: An inverter apparatus includes a capacitor to which DC voltage is applied, a power module that converts voltage of the capacitor into AC voltage through a switching element, a micro controller unit (MCU) that controls the power module, a resistor network including a plurality of resistor sets connected in series, and a board on which the MCU and the resistor network are mounted. Each of the resistor sets may include a plurality of resistors connected in parallel. The resistor network may be electrically connected between the capacitor and the power module.
    Type: Application
    Filed: August 5, 2025
    Publication date: July 9, 2026
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Do Hyeon Ham, Sol Bin Lee, Nae Chun Park, In Ho Kim
  • Publication number: 20250388101
    Abstract: A vehicle-to-vehicle charging system using the motor drive system may include a first battery, an inverter receiving direct current power stored in the battery to convert the received direct current power into three-phase alternating current and outputting the alternating current in motor drive mode, a motor using the alternating current power output from the inverter to generate rotation force in motor drive mode, a charging power input/output end, and a controller controlling the inverter to step up or down the charging power voltage based on voltage of a second battery of the other vehicle to supply the charging power to the other vehicle through the charging power input/output end once a vehicle-to-vehicle charging mode in which the other vehicle is electrically connected and the charging power of the first battery is used to charge the second battery of the other vehicle is initiated.
    Type: Application
    Filed: November 14, 2024
    Publication date: December 25, 2025
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Do Hyeon HAM, Choul Woo Jung, Sol Bin Lee
  • Publication number: 20250074226
    Abstract: An electrified vehicle and a method for controlling charging and discharging operation of the same are disclosed. The electrified vehicle includes an AC connector, a motor connected to a first AC terminal at a neutral point thereof, an inverter including a plurality of first legs connected between two DC terminals, respective arms of the plurality of first legs being connected to corresponding ones of a plurality of windings of the motor, a second leg connected, at both ends thereof, to the two DC terminals while being connected, at an arm thereof, to a second AC terminal, and a controller configured to control switching elements of the first leg and the second leg.
    Type: Application
    Filed: May 7, 2024
    Publication date: March 6, 2025
    Inventors: Do Hyeon HAM, In Ho KIM, Ho Jun SHIN, Choul Woo JUNG
  • Publication number: 20250062755
    Abstract: Disclosed are an apparatus and a method for compensating for a phase delay of a resolver signal. The apparatus includes an input/output interface, and a processor connected to the input/output interface, wherein the processor receives a command signal and the resolver signal through the input/output interface, calculates a delay time of the resolver signal with respect to the command signal based on the command signal and the resolver signal, calculates a compensation time based on the delay time, and compensates the command signal based on the compensation time.
    Type: Application
    Filed: August 9, 2024
    Publication date: February 20, 2025
    Applicants: HYUNDAI MOBIS CO., LTD., HYUNDAI MOTOR COMPANY, Kia Corporation
    Inventors: Won Hee JO, Hyung Min PARK, Joo Won PARK, Yeon Ho KIM, Beom Cheol CHO, Yun Ho CHOI, Tae Hwan KANG, Do Hyeon HAM
  • Patent number: 12218619
    Abstract: The present disclosure provides a system and method for detecting a resolver signal of a motor allowing accurate detection of a peak magnitude, a peak time, a peak point, etc. of a resolver output signal. A bandpass filter and a moving average processor are configured to remove noise introduced into the resolver output signal and maintain a magnitude of the resolver output signal at original magnitude without change. A phase compensation process performed by a lead phase compensator can compensate a phase delay time for the resolver output signal.
    Type: Grant
    Filed: November 17, 2022
    Date of Patent: February 4, 2025
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Do Hyeon Ham, Ho Jun Shin, Hun Kong, Jang Ho Won
  • Publication number: 20230238903
    Abstract: The present disclosure provides a system and method for detecting a resolver signal of a motor allowing accurate detection of a peak magnitude, a peak time, a peak point, etc. of a resolver output signal. A bandpass filter and a moving average processor are configured to remove noise introduced into the resolver output signal and maintain a magnitude of the resolver output signal at original magnitude without change. A phase compensation process performed by a lead phase compensator can compensate a phase delay time for the resolver output signal.
    Type: Application
    Filed: November 17, 2022
    Publication date: July 27, 2023
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Do Hyeon Ham, Ho Jun Shin, Hun Kong, Jang Ho Won
  • Patent number: 11549826
    Abstract: An apparatus and a method for detecting a phase delay of a resolver are provided. The apparatus includes a resolver configured to output a signal corresponding to a rotation angle of a motor, an excitation signal generator configured to generate an excitation signal using a square wave signal, and a controller configured to differentiate the signal to obtain a differential signal, detect a time when the differential signal meets a reference voltage as a peak time of the signal, and detect a phase delay time of the signal based on the peak time of the signal and an edge time of the square wave signal.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: January 10, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Do Hyeon Ham, Jun Jang, Hun Kong, Jang Ho Won
  • Publication number: 20220268604
    Abstract: An apparatus and a method for detecting a phase delay of a resolver are provided. The apparatus includes a resolver configured to output a signal corresponding to a rotation angle of a motor, an excitation signal generator configured to generate an excitation signal using a square wave signal, and a controller configured to differentiate the signal to obtain a differential signal, detect a time when the differential signal meets a reference voltage as a peak time of the signal, and detect a phase delay time of the signal based on the peak time of the signal and an edge time of the square wave signal.
    Type: Application
    Filed: August 27, 2021
    Publication date: August 25, 2022
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Do Hyeon HAM, Jun Jang, Hun Kong, Jang Ho Won