Patents by Inventor Zhuangyao Tang

Zhuangyao Tang 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).

  • Methods and systems for control of parallel connected motor drives
    Patent number: 10389286
    Abstract: A method of controlling a plurality of permanent magnet synchronous motors using a single inverter that includes obtaining an estimate of rotor position and speed individually for a plurality of permanent magnet synchronous motors. The method can include calculating the average rotor position from the obtained estimate of the rotor position for each permanent magnet synchronous motor of the plurality of permanent magnet synchronous motors. The method can include reconstructing a rotor permanent-magnet flux for each permanent magnet synchronous motor and transforming the reconstructed rotor permanent-magnet flux for each permanent magnet synchronous motor to average fluxes and average differential fluxes on an average d-q reference frame. The method can include obtaining the average current reference in the average d-q reference frame for the plurality of permanent magnet synchronous motors; and determining an inverter voltage reference.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: August 20, 2019
    Assignees: SCHLUMBERGER TECHNOLOGY CORPORATION, BOARD OF REGENTS/THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: Zhuangyao Tang, Bilal Akin, Xuedong Yang, Maxim Klyuzhev
  • Methods and Systems for Control of Parallel Connected Motor Drives
    Publication number: 20170257048
    Abstract: A method of controlling a plurality of permanent magnet synchronous motors using a single inverter that includes obtaining an estimate of rotor position and speed individually for a plurality of permanent magnet synchronous motors. The method can include calculating the average rotor position from the obtained estimate of the rotor position for each permanent magnet synchronous motor of the plurality of permanent magnet synchronous motors. The method can include reconstructing a rotor permanent-magnet flux for each permanent magnet synchronous motor and transforming the reconstructed rotor permanent-magnet flux for each permanent magnet synchronous motor to average fluxes and average differential fluxes on an average d-q reference frame. The method can include obtaining the average current reference in the average d-q reference frame for the plurality of permanent magnet synchronous motors; and determining an inverter voltage reference.
    Type: Application
    Filed: March 7, 2016
    Publication date: September 7, 2017
    Inventors: Zhuangyao Tang, Bilal Akin, Xuedong Yang, Maxim Klyuzhev