Patents by Inventor Chung-Hsing Ku

Chung-Hsing Ku 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).

  • Motor drive system and torque distribution method thereof
    Patent number: 12132425
    Abstract: A motor drive system includes an electric motor, a drive circuit and a control unit. The drive circuit provides a driving current to the electric motor. A current command generator of the control unit generates a current command according to a torque command and a motor operating information. The driving current is converted into a d-axis current and/or a q-axis current by the control unit. Consequently, the driving current is close to the d-axis current command and/or the q-axis current command corresponding to the current command. If a value of the torque command is positive, the current command generator generates the corresponding current command according to a MTPA lookup table. If the value of the torque command is negative, the current command generator generates the corresponding current command according to a zero recycle lookup table.
    Type: Grant
    Filed: December 2, 2022
    Date of Patent: October 29, 2024
    Assignee: Delta Electronics, Inc.
    Inventors: Chih-Hung Hsiao, Chung-Hsing Ku, Shang-Wei Chiu, Zhi-Sheng Yang
  • MOTOR DRIVE SYSTEM AND TORQUE DISTRIBUTION METHOD THEREOF
    Publication number: 20240079981
    Abstract: A motor drive system includes an electric motor, a drive circuit and a control unit. The drive circuit provides a driving current to the electric motor. A current command generator of the control unit generates a current command according to a torque command and a motor operating information. The driving current is converted into a d-axis current and/or a q-axis current by the control unit. Consequently, the driving current is close to the d-axis current command and/or the q-axis current command corresponding to the current command. If a value of the torque command is positive, the current command generator generates the corresponding current command according to a MTPA lookup table. If the value of the torque command is negative, the current command generator generates the corresponding current command according to a zero recycle lookup table.
    Type: Application
    Filed: December 2, 2022
    Publication date: March 7, 2024
    Inventors: Chih-Hung Hsiao, Chung-Hsing Ku, Shang-Wei Chiu, Zhi-Sheng Yang