Patents by Inventor Qiufang ZHANG

Qiufang ZHANG 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).

  • Ring-connected bridge-type multi-port hybrid DC circuit breaker
    Patent number: 11394197
    Abstract: It discloses a ring-connected bridge-type multi-port hybrid DC circuit breaker. When the number of ports is n, n is an integer greater than or equal to 2, the ring-connected bridge-type multi-port hybrid DC circuit breaker includes: an upper DC bus bar, a lower DC bus bar, n thyristor arms, n diode arms, a main breaker branch, and n bypass branches; each thyristor arm connects in series with a diode arm, forming a series circuit; a bypass branch is connected between every two adjacent series circuits, a port is provided at the connection point of the thyristor arm and the diode arm in each series circuit, and the port is used to connect the protected components or the DC lines.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: July 19, 2022
    Assignee: BEIJING JIAOTONG UNIVERSITY
    Inventors: Meng Li, Yiping Luo, Jinghan He, Yin Xu, Qiufang Zhang, Guomin Luo, Dahai Zhang, Xiaojun Wang, Fang Zhang, Xiangyu Wu, Pinghao Ni
  • Ring-connected bridge-type multi-port hybrid DC circuit breaker
    Publication number: 20220006286
    Abstract: It discloses a ring-connected bridge-type multi-port hybrid DC circuit breaker. When the number of ports is n, n is an integer greater than or equal to 2, the ring-connected bridge-type multi-port hybrid DC circuit breaker includes: an upper DC bus bar, a lower DC bus bar, n thyristor arms, n diode arms, a main breaker branch, and n bypass branches; each thyristor arm connects in series with a diode arm, forming a series circuit; a bypass branch is connected between every two adjacent series circuits, a port is provided at the connection point of the thyristor arm and the diode arm in each series circuit, and the port is used to connect the protected components or the DC lines.
    Type: Application
    Filed: April 24, 2019
    Publication date: January 6, 2022
    Inventors: Meng LI, Yiping LUO, Jinghan HE, Yin XU, Qiufang ZHANG, Guomin LUO, Dahai ZHANG, Xiaojun WANG, Fang ZHANG, Xiangyu WU, Pinghao NI