Patents by Inventor Yongdong Qiu

Yongdong Qiu 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).

  • VARIABLE-FREQUENCY GENERATOR SET INTEGRATED SYSTEM DRIVEN BY INTERNAL COMBUSTION ENGINE
    Publication number: 20220239192
    Abstract: A variable-frequency generator set integrated system driven by an internal combustion engine includes a permanent magnet generator and an inverter device. The winding coils on the permanent magnet generator stator are all three-phase winding coils. The inverter device has an AC-DC rectification and voltage stabilization unit, a DC-AC variable-frequency inverter unit, a DC-DC conversion unit, and a control unit. The AC-DC rectification and voltage stabilization unit has an input end, a first output end, and a second output end respectively connected with the three-phase winding coils, the DC-AC variable-frequency inverter unit, and the DC-DC conversion unit. The DC-DC conversion unit is configured to convert a DC power source rectified by the AC-DC rectification and stabilization unit to a plurality of DC power sources with different voltages to supply power to the control unit and directly output. The permanent magnet generator is smaller in volume and weight and lower in cost.
    Type: Application
    Filed: January 20, 2022
    Publication date: July 28, 2022
    Inventors: Lin He, Yongdong Qiu, Bin Chen