Patents by Inventor Hanchao ZENG

Hanchao ZENG 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-stage multi-input buck type low-frequency link's inverter with an external parallel-timesharing select switch
    Patent number: 11050359
    Abstract: A circuit structure of a voltage type single-stage multi-input low-frequency link inverter with an external parallel-timesharing select switch is formed by connecting a plurality of input filters connected to ground and a common output low-frequency isolation voltage-transformation filter circuit through a multi-input single-output high-frequency inverter circuit. Each input end of the multi-input single-output high-frequency inverter circuit is connected to an output end of each of the input filters in a manner of one-to-one correspondence. An output end of the multi-output single-input high-frequency inverter circuit and the output low-frequency isolation voltage-transformation filter circuit are connected. The multi-input single-output high-frequency inverter circuit includes an external multi-path parallel-timesharing select four-quadrant power switch circuit and a bidirectional power flow single-input single-output high-frequency inverter circuit successively connected in cascade.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: June 29, 2021
    Assignee: QINGDAO UNIVERSITY
    Inventors: Daolian Chen, Hanchao Zeng
  • SINGLE-STAGE MULTI-INPUT BUCK TYPE LOW-FREQUENCY LINK'S INVERTER WITH AN EXTERNAL PARALLEL-TIMESHARING SELECT SWITCH
    Publication number: 20200144934
    Abstract: A circuit structure of a voltage type single-stage multi-input low-frequency link inverter with an external parallel-timesharing select switch is formed by connecting a plurality of input filters connected to ground and a common output low-frequency isolation voltage-transformation filter circuit through a multi-input single-output high-frequency inverter circuit. Each input end of the multi-input single-output high-frequency inverter circuit is connected to an output end of each of the input filters in a manner of one-to-one correspondence. An output end of the multi-output single-input high-frequency inverter circuit and the output low-frequency isolation voltage-transformation filter circuit are connected. The multi-input single-output high-frequency inverter circuit includes an external multi-path parallel-timesharing select four-quadrant power switch circuit and a bidirectional power flow single-input single-output high-frequency inverter circuit successively connected in cascade.
    Type: Application
    Filed: December 6, 2018
    Publication date: May 7, 2020
    Applicant: Qingdao University
    Inventors: Daolian CHEN, Hanchao ZENG