Patents by Inventor Donghai HU

Donghai HU 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).

  • Transient current planning method for ultra-high-speed permanent magnet synchronous motor for improving speed regulation response capabilities
    Patent number: 11671041
    Abstract: A transient current planning method for an ultra-high-speed permanent magnet synchronous motor for improving speed regulation response capabilities is provided. A transient current planning module uses a voltage model considering transient current changes to calculate current instruction values of an ultra-high-speed permanent magnet synchronous motor under MTPA control, general flux-weakening control, and MTPV control; a mode switching condition judgment subsystem judges whether a control mode is MTPA control or general flux-weakening control, or MTPV control, and sends d- and q-axis current instruction values in the corresponding control mode to a voltage decoupling control module; and the voltage decoupling control module calculates d- and q-axis voltage instruction values for controlling the motor, so as to realize control over the ultra-high-speed permanent magnet synchronous motor.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: June 6, 2023
    Assignee: JIANGSU UNIVERSITY
    Inventors: Donghai Hu, Jing Wang, Hongwen He, Fengyan Yi, Zhongyan Li, Jiang Li, Zhong Li, Jiaming Zhou
  • TRANSIENT CURRENT PLANNING METHOD FOR ULTRA-HIGH-SPEED PERMANENT MAGNET SYNCHRONOUS MOTOR FOR IMPROVING SPEED REGULATION RESPONSE CAPABILITIES
    Publication number: 20220337182
    Abstract: A transient current planning method for an ultra-high-speed permanent magnet synchronous motor for improving speed regulation response capabilities is provided. A transient current planning module uses a voltage model considering transient current changes to calculate current instruction values of an ultra-high-speed permanent magnet synchronous motor under MTPA control, general flux-weakening control, and MTPV control; a mode switching condition judgment subsystem judges whether a control mode is MTPA control or general flux-weakening control, or MTPV control, and sends d- and q-axis current instruction values in the corresponding control mode to a voltage decoupling control module; and the voltage decoupling control module calculates d- and q-axis voltage instruction values for controlling the motor, so as to realize control over the ultra-high-speed permanent magnet synchronous motor.
    Type: Application
    Filed: January 12, 2021
    Publication date: October 20, 2022
    Applicant: JIANGSU UNIVERSITY
    Inventors: Donghai HU, Jing WANG, Hongwen HE, Fengyan YI, Zhongyan LI, Jiang LI, Zhong LI, Jiaming ZHOU