Patents by Inventor Fayang JIANG

Fayang JIANG 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).

  • Auxiliary power supply device for inverter, inverter, and method for starting the same
    Patent number: 11594952
    Abstract: An auxiliary power supply device for an inverter with a plurality of power modules connected in parallel is disclosed. The auxiliary power supply device includes: a plurality of soft-start circuits, each coupled to a DC port of a corresponding power module; a plurality of distributed auxiliary power supplies, each having an input terminal coupled to the DC port of the corresponding power module; and a centralized auxiliary power supply having an input terminal coupled to an AC side of the inverter, and an output terminal coupled to a DC side of the inverter. By replacing auxiliary power supplies on the AC sides of all power modules with the centralized auxiliary power supply and omitting soft-start circuits on the AC sides of all power modules, the present invention improves system performance in cost, volume, loss, and electromagnetic compatibility.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: February 28, 2023
    Assignee: Delta Electronics (Shanghai) Co., Ltd.
    Inventors: Chao Zhang, Wei Guan, Hongyang Wu, Feiqin Hao, Fayang Jiang
  • AUXILIARY POWER SUPPLY DEVICE FOR INVERTER, INVERTER, AND METHOD FOR STARTING THE SAME
    Publication number: 20220131458
    Abstract: An auxiliary power supply device for an inverter with a plurality of power modules connected in parallel is disclosed. The auxiliary power supply device includes: a plurality of soft-start circuits, each coupled to a DC port of a corresponding power module; a plurality of distributed auxiliary power supplies, each having an input terminal coupled to the DC port of the corresponding power module; and a centralized auxiliary power supply having an input terminal coupled to an AC side of the inverter, and an output terminal coupled to a DC side of the inverter. By replacing auxiliary power supplies on the AC sides of all power modules with the centralized auxiliary power supply and omitting soft-start circuits on the AC sides of all power modules, the present invention improves system performance in cost, volume, loss, and electromagnetic compatibility.
    Type: Application
    Filed: August 11, 2021
    Publication date: April 28, 2022
    Inventors: Chao ZHANG, Wei Guan, Hongyang WU, Feiqin HAO, Fayang JIANG