Patents by Inventor Shamsuddeen NALAKATH

Shamsuddeen NALAKATH 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 detecting a rotor position and rotor speed of an alternating current electrical machine
    Patent number: 11394327
    Abstract: A method for determining rotor characteristic of an alternating current (AC) electrical machine includes obtaining a reference voltage signal, one or more phase currents, and rotor data. The method includes determining orthogonal components of an extended back electromotive force (BEMF) model of the AC electrical machine based on the reference voltage signal, the one or more phase current characteristics, and the rotor data. The method includes determining a product of the orthogonal components of the extended BEMF model. The method includes determining a squared-magnitude of the orthogonal components of the extended BEMF mode. The method includes determining the rotor characteristic of the AC electrical machine based on the product of the orthogonal components and the squared-magnitude of the orthogonal components.
    Type: Grant
    Filed: April 16, 2021
    Date of Patent: July 19, 2022
    Assignee: BorgWarner Inc.
    Inventors: Shamsuddeen Nalakath, Dianxun Xiao, Jia Xiu Dong, Gaoliang Fang, Ali Emadi, Yingguang Sun, Jason Wiseman
  • METHODS AND SYSTEMS FOR DETECTING A ROTOR POSITION AND ROTOR SPEED OF AN ALTERNATING CURRENT ELECTRICAL MACHINE
    Publication number: 20210336572
    Abstract: A method for determining rotor characteristic of an alternating current (AC) electrical machine includes obtaining a reference voltage signal, one or more phase currents, and rotor data. The method includes determining orthogonal components of an extended back electromotive force (BEMF) model of the AC electrical machine based on the reference voltage signal, the one or more phase current characteristics, and the rotor data. The method includes determining a product of the orthogonal components of the extended BEMF model. The method includes determining a squared-magnitude of the orthogonal components of the extended BEMF mode. The method includes determining the rotor characteristic of the AC electrical machine based on the product of the orthogonal components and the squared-magnitude of the orthogonal components.
    Type: Application
    Filed: April 16, 2021
    Publication date: October 28, 2021
    Inventors: Shamsuddeen NALAKATH, Dianxun XIAO, Jia Xiu DONG, Gaoliang FANG, Ali EMADI, Yingguang SUN, Jason WISEMAN
  • Method for determining motor parameters during commissioning of synchronous and asynchronous electric motors and related commissioned electric motor
    Patent number: 11075596
    Abstract: A method for commissioning a synchronous or asynchronous electric motor having a stator and a rotor in which electrical power is applied to the motor when the rotor is stationary. The electric power is applied in two stages. The first stage utilizes a DC power that ramps in voltage over the duration of the first test to produce a current response that is employed to determine at least a first motor parameter. The second stage uses relatively high frequency AC power to generate one or more current responses that are employed to determine second and third motor parameters. A related electric motor drive system is also provided.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: July 27, 2021
    Assignee: BorgWarner Inc.
    Inventors: Shamsuddeen Nalakath, Parisa Mahvelatishamsabadi, Jing Zhao, Ali Emadi, Yingguang Sun, Jason Wiseman
  • METHOD FOR DETERMINING MOTOR PARAMETERS DURING COMMISSIONING OF SYNCHRONOUS AND ASYNCHRONOUS ELECTRIC MOTORS AND RELATED COMMISSIONED ELECTRIC MOTOR
    Publication number: 20200358385
    Abstract: A method for commissioning a synchronous or asynchronous electric motor having a stator and a rotor in which electrical power is applied to the motor when the rotor is stationary. The electric power is applied in two stages. The first stage utilizes a DC power that ramps in voltage over the duration of the first test to produce a current response that is employed to determine at least a first motor parameter. The second stage uses relatively high frequency AC power to generate one or more current responses that are employed to determine second and third motor parameters. A related electric motor drive system is also provided.
    Type: Application
    Filed: May 4, 2020
    Publication date: November 12, 2020
    Inventors: Shamsuddeen NALAKATH, Parisa MAHVELATISHAMSABADI, Jing ZHAO, Ali EMADI, Yingguang SUN, Jason WISEMAN