Patents by Inventor Chaozhe WANG

Chaozhe WANG 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).

  • Method for minimizing DC capacitance for cascade multilevel converter
    Patent number: 10938320
    Abstract: A method for minimizing DC capacitance of a cascade multilevel converter is provided. On the basis of balancing of capacitor voltages, the method estimates instantaneous value of the DC side capacitor voltages in a circuit through an energy conservation law, and uses a proportional resonance controller to control a grid-connected current to realize adjustment of the grid-connected current without static difference, such that the cascade multilevel converter can operate in a small capacitance mode, the system volume is greatly reduced, the system cost is reduced, the control is easy to be implemented, and the capacitor voltage is free from overshoot and the system has a better rapidity.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: March 2, 2021
    Assignees: SHENK ELECTRIC INC., Yanshan University
    Inventors: Xiaoqiang Guo, Lichong Wang, Hao Ding, Chaozhe Wang, Zhigang Lu, Baocheng Wang
  • METHOD FOR MINIMIZING DC CAPACITANCE FOR CASCADE MULTILEVEL CONVERTER
    Publication number: 20200403528
    Abstract: A method for minimizing DC capacitance of a cascade multilevel converter is provided. On the basis of balancing of capacitor voltages, the method estimates instantaneous value of the DC side capacitor voltages in a circuit through an energy conservation law, and uses a proportional resonance controller to control a grid-connected current to realize adjustment of the grid-connected current without static difference, such that the cascade multilevel converter can operate in a small capacitance mode, the system volume is greatly reduced, the system cost is reduced, the control is easy to be implemented, and the capacitor voltage is free from overshoot and the system has a better rapidity.
    Type: Application
    Filed: June 15, 2020
    Publication date: December 24, 2020
    Inventors: Xiaoqiang GUO, Lichong WANG, Hao DING, Chaozhe WANG, Zhigang LU, Baocheng WANG