Patents by Inventor JUNLEI WEI

JUNLEI WEI 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).

  • System and method for parallel power supply control for auxiliary converters of motor train unit in presence of interconnecting lines
    Patent number: 9809118
    Abstract: A system and a method for parallel power supply control for auxiliary converters of a motor train unit in the presence of interconnecting lines. The system comprises multiple three-phase inverter modules. The multiple three-phase inverter modules are in parallel connection with each other. Any two-phase circuit of a three-phase inverter module is separately in parallel connection with a corresponding two-phase circuit of a three-phase inverter module adjacent to the three-phase inverter module by using a connecting line module. The connecting line module is connected to a control system. The three-phase inverter modules are also connected to the control system. The three-phase lines of the three-phase inverter modules are all provided with switches.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: November 7, 2017
    Assignee: CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
    Inventors: Dongjun Yang, Bo Li, Junlei Wei, Bo Zhang, Zhaoping Li, Xiaoming Zhang, Zheng Xie, Yang Zhou, Lijun Zhang, Yanfang Zhang
  • SYSTEM AND METHOD FOR PARALLEL POWER SUPPLY CONTROL FOR AUXILIARY CONVERTERS OF MOTOR TRAIN UNIT IN PRESENCE OF INTERCONNECTING LINES
    Publication number: 20160167528
    Abstract: A system and a method for parallel power supply control for auxiliary converters of a motor train unit in the presence of interconnecting lines. The system comprises multiple three-phase inverter modules. The multiple three-phase inverter modules are in parallel connection with each other. Any two-phase circuit of a three-phase inverter module is separately in parallel connection with a corresponding two-phase circuit of a three-phase inverter module adjacent to the three-phase inverter module by using a connecting line module. The connecting line module is connected to a control system. The three-phase inverter modules are also connected to the control system. The three-phase lines of the three-phase inverter modules are all provided with switches.
    Type: Application
    Filed: June 9, 2014
    Publication date: June 16, 2016
    Inventors: DONGJUN YANG, BO LI, JUNLEI WEI, BO ZHANG, ZHAOPING LI, XIAOMING ZHANG, ZHENG XIE, YANG ZHOU, lIJUN ZHANG, YANFANG ZHANG