Patents by Inventor Hyeong Geun Song

Hyeong Geun Song 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).

  • Brushless direct current electric motor driving control method and system of electrical water pump
    Patent number: 10447188
    Abstract: A method and system of controlling driving of a brushless DC electric motor (BLDC) of an electric water pump are provided. The method includes estimating an initial position of a rotor using a magnitude of a current detected in a three-phase coil wound on a stator and converting a current magnitude that reflects a rotational angle of the rotor with respect to the initial position into two direct currents based on the three-phase current. The converted direct currents are output and a rotational angle, a speed, a flux and a torque of the rotor are acquired based on values of the three-phase current, a voltage generated according to flow of the three-phase current, a predetermined coil resistance, and an inductance input. A speed of the motor is then adjusted based on the acquired rotational angle, speed, flux, and torque of the rotor.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: October 15, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Myung Hwa Ind. Co., Ltd.
    Inventors: Dong Soo Shim, Yeon Ho Kim, Byoung Hoon Choi, Jae Shin Yi, Hyeong Geun Song, Geun Oh Dong
  • BRUSHLESS DIRECT CURRENT ELECTRIC MOTOR DRIVING CONTROL METHOD AND SYSTEM OF ELECTRICAL WATER PUMP
    Publication number: 20180167005
    Abstract: A method and system of controlling driving of a brushless DC electric motor (BLDC) of an electric water pump are provided. The method includes estimating an initial position of a rotor using a magnitude of a current detected in a three-phase coil wound on a stator and converting a current magnitude that reflects a rotational angle of the rotor with respect to the initial position into two direct currents based on the three-phase current. The converted direct currents are output and a rotational angle, a speed, a flux and a torque of the rotor are acquired based on values of the three-phase current, a voltage generated according to flow of the three-phase current, a predetermined coil resistance, and an inductance input. A speed of the motor is then adjusted based on the acquired rotational angle, speed, flux, and torque of the rotor.
    Type: Application
    Filed: December 8, 2017
    Publication date: June 14, 2018
    Inventors: Dong Soo Shim, Yeon Ho Kim, Byoung Hoon Choi, Jae Shin Yi, Hyeong Geun Song, Geun Oh Dong
  • Electric water pump
    Patent number: 9188128
    Abstract: An electric water pump, which can not only ensure more reliable waterproof and cooling performance, provides enhanced durability and operational reliability, and is able to reduce the number of parts and has a more compact structure, compared to the conventional technique.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: November 17, 2015
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORP., AMOTECH CO., LTD., MYUNG HWA IND. CO., LTD.
    Inventors: Jae Woong Lee, Yun Seok Kim, Hyeong Geun Song, Byung Soo Kim