Patents by Inventor Guangming Pei

Guangming Pei 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).

  • Apparatus and method for controlling delta-connected cascaded multilevel converter
    Patent number: 12113456
    Abstract: Embodiments of present disclosure relate to an apparatus and a method for controlling a delta-connected cascaded multilevel converter. The apparatus (100) for controlling a delta-connected cascaded multilevel converter (110) comprises: a converter controller (102) configured to: receive current signals indicating phase currents flowing through respective phase arms of the converter (110); determine a harmonic current signal indicating a circulating current of the converter (110) from the current signals; and generate, based on the determined harmonic current signal and a reference current signal, a harmonic voltage signal to cause an amplitude of the circulating current flowing through the phase arms of the converter (110) to be a predetermined amplitude.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: October 8, 2024
    Assignee: ABB SCHWEIZ AG
    Inventors: Xing Huang, Hailian Xie, Guangming Pei, Hua Wei, Min Li
  • APPARATUS AND METHOD FOR CONTROLLING DELTA-CONNECTED CASCADED MULTILEVEL CONVERTER
    Publication number: 20220407407
    Abstract: Embodiments of present disclosure relate to an apparatus and a method for controlling a delta-connected cascaded multilevel converter. The apparatus (100) for controlling a delta-connected cascaded multilevel converter (110) comprises: a converter controller (102) configured to: receive current signals indicating phase currents flowing through respective phase arms of the converter (110); determine a harmonic current signal indicating a circulating current of the converter (110) from the current signals; and generate, based on the determined harmonic current signal and a reference current signal, a harmonic voltage signal to cause an amplitude of the circulating current flowing through the phase arms of the converter (110) to be a predetermined amplitude.
    Type: Application
    Filed: February 28, 2020
    Publication date: December 22, 2022
    Inventors: Xing Huang, Hailian Xie, Guangming Pei, Hua Wei, Min Li