Patents by Inventor Lingwei LIANG

Lingwei LIANG 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).

  • DC bus discharge control method, apparatus and device, and storage medium
    Patent number: 11271499
    Abstract: Provided is a Direct Circuit (DC) bus discharge control method, including that: an active discharge instruction is received; a motor current signal is acquired according to the active discharge instruction; the motor current signal is converted into a current signal in a stator coordinate system; a voltage control signal in the stator coordinate system is output based on the current signal in the stator coordinate system and a current reference instruction of a preset stator coordinate system, the current reference instruction of the preset stator coordinate system being a high-frequency alternating current; and the voltage control signal in the stator coordinate system is converted into a three-phase voltage control signal, and a working state of a switching device is controlled according to the three-phase voltage control signal.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: March 8, 2022
    Assignee: GAC AION NEW ENERGY AUTOMOBILE CO. LTD
    Inventors: Zhuliang Xia, Lingwei Liang, Shu Cheng, Xiaokun Zhao, Xiutian Liu, Xiang Han
  • DC Bus Discharge Control Method, Apparatus and Device, and Storage Medium
    Publication number: 20210336569
    Abstract: Provided is a Direct Circuit (DC) bus discharge control method, including that: an active discharge instruction is received; a motor current signal is acquired according to the active discharge instruction; the motor current signal is converted into a current signal in a stator coordinate system; a voltage control signal in the stator coordinate system is output based on the current signal in the stator coordinate system and a current reference instruction of a preset stator coordinate system, the current reference instruction of the preset stator coordinate system being a high-frequency alternating current; and the voltage control signal in the stator coordinate system is converted into a three-phase voltage control signal, and a working state of a switching device is controlled according to the three-phase voltage control signal.
    Type: Application
    Filed: August 31, 2018
    Publication date: October 28, 2021
    Inventors: Zhuliang XIA, Lingwei LIANG, Shu CHENG, Xiaokun ZHAO, Xiutian LIU, Xiang HAN