Patents by Inventor Asma B. Rhouma

Asma B. Rhouma 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).

  • Control device for driving a brushless DC motor
    Patent number: 7643733
    Abstract: A delta type inverter is used in conjunction with a closed-loop motor controller to provide a control device for driving a three phase brushless direct current motor. The delta inverter has one-half of the solid state switching devices and diodes required by conventional bridge type inventers, thereby improved reliability, and enabling the motor control device to have reduced size, cost and weight. The closed-loop motor controller may include a torque loop for reducing torque ripple during operation of the motor.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: January 5, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Ahmed M. El-Antably, Asma B. Rhouma, Ahmed Masmoudi, Alan G. Holmes
  • CONTROL DEVICE FOR DRIVING A BRUSHLESS DC MOTOR
    Publication number: 20090028532
    Abstract: A delta type inverter is used in conjunction with a closed-loop motor controller to provide a control device for driving a three phase brushless direct current motor. The delta inverter has one-half of the solid state switching devices and diodes required by conventional bridge type inventers, thereby improved reliability, and enabling the motor control device to have reduced size, cost and weight. The closed-loop motor controller may include a torque loop for reducing torque ripple during operation of the motor.
    Type: Application
    Filed: July 27, 2007
    Publication date: January 29, 2009
    Inventors: Ahmed M. El-Antably, Asma B. Rhouma, Ahmed Masmoudi, Alan G. Holmes