Patents by Inventor Renwei FENG

Renwei FENG 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).

  • Single-phase and three-phase compatible conversion circuit and vehicle-mounted charger
    Patent number: 11664723
    Abstract: A single-phase and three-phase compatible conversion circuit includes an EMC module, a PFC module, a switch K1 and a control module. The EMC module is connected between lines A, B, C and N of a power grid and the PFC module. Three lines A1, B1 and C1 are led out from the EMC module and are connected with the PFC module, and are respectively connected to a set virtual midpoint through capacitors CX1, CX2, and CX3. The virtual midpoint is connected to a bus midpoint of the PFC module through the switch K1. The control module is used for detecting a power grid input signal and controlling the state of the switch K1 according to the type of the power grid input signal. The common-mode noise of the three-phase conversion mode can be reduced, and the three-phase conversion mode can be controlled within a larger bus voltage regulation range.
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: May 30, 2023
    Assignee: SHENZHEN VMAX NEW ENERGY CO., LTD.
    Inventors: Jun Liu, Yingying Feng, Shun Yao, Renwei Feng
  • SINGLE-PHASE AND THREE-PHASE COMPATIBLE CONVERSION CIRCUIT AND VEHICLE-MOUNTED CHARGER
    Publication number: 20210288575
    Abstract: A single-phase and three-phase compatible conversion circuit includes an EMC module, a PFC module, a switch K1 and a control module. The EMC module is connected between lines A, B, C and N of a power grid and the PFC module. Three lines A1, B1 and C1 are led out from the EMC module and are connected with the PFC module, and are respectively connected to a set virtual midpoint through capacitors CX1, CX2, and CX3. The virtual midpoint is connected to a bus midpoint of the PFC module through the switch K1. The control module is used for detecting a power grid input signal and controlling the state of the switch K1 according to the type of the power grid input signal. The common-mode noise of the three-phase conversion mode can be reduced, and the three-phase conversion mode can be controlled within a larger bus voltage regulation range.
    Type: Application
    Filed: March 11, 2021
    Publication date: September 16, 2021
    Inventors: Jun LIU, Yingying FENG, Shun YAO, Renwei FENG