Patents by Inventor Lining Hu

Lining 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).

  • Modulation method for direct current (DC) coupling converter with less dc voltage sensors
    Patent number: 12418247
    Abstract: A modulation method for a direct current (DC) coupling converter with less DC voltage sensors includes: obtaining a voltage modulated wave vr* and a current reference value ig* of the DC coupling converter; performing determination on the voltage modulated wave vr* and the current reference value ig*, and determining a switch state of the DC coupling converter based on a result of the determination; and when a DC voltage sensor of an electrolytic capacitor of an intermediate power module is removed, modulating a DC voltage sensor based on the voltage modulated wave vr* and a difference between DC voltages on electrolytic capacitors of the other two power modules. When the intermediate DC-side voltage sensor is removed, DC voltages of various modules of a converter system of a DC coupling power unit can still be balanced, and quality of a grid-connected current is not affected by a fault.
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: September 16, 2025
    Assignees: State Grid Chongqing Electric Power Co. Electric Power Research Institute, State Grid Corporation of China
    Inventors: Hui Fang, Jingsen Zhou, Yongtao Chen, Fan Mu, Shengyi Zhu, Cheng Wang, Lei Li, Hongji Xiang, Yanan Yu, Qiang Xiao, Lining Hu, Zhongyi Wen
  • MODULATION METHOD FOR DIRECT CURRENT (DC) COUPLING CONVERTER WITH LESS DC VOLTAGE SENSORS
    Publication number: 20240258916
    Abstract: A modulation method for a direct current (DC) coupling converter with less DC voltage sensors includes: obtaining a voltage modulated wave vr* and a current reference value ig* of the DC coupling converter; performing judgment on the voltage modulated wave vr* and the current reference value ig*, and determining a switch state of the DC coupling converter based on a result of the judgment; and when a DC voltage sensor of an electrolytic capacitor of an intermediate power module is removed, modulating a DC voltage sensor based on the voltage modulated wave vr* and a difference between DC voltages on electrolytic capacitors of the other two power modules. When the intermediate DC-side voltage sensor is removed, DC voltages of various modules of a converter system of a DC coupling power unit can still be balanced, and quality of a grid-connected current is not affected by a fault.
    Type: Application
    Filed: September 26, 2022
    Publication date: August 1, 2024
    Inventors: Hui Fang, Jingsen Zhou, Yongtao Chen, Fan Mu, Shengyi Zhu, Cheng Wang, Lei Li, Hongji Xiang, Yanan Yu, Qiang Xiao, Lining Hu, Zhongyi Wen