Patents by Inventor Reza Moghaddam Rajabi

Reza Moghaddam Rajabi 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).

  • Machine type identification
    Patent number: 9673739
    Abstract: For identifying the machine type of an alternating current machine, a direct current is first applied to the stator for aligning the d-axis of the rotor and the magnetic field direction of the stator. Secondly, a direct current is applied to the stator at a current angle which causes the rotors of a permanent magnet machine and a synchronous reluctance machine to exert torque in different directions. The torque direction of the rotor is detected and the machine type is identified based on the torque direction information. The machine type is recognized as a permanent magnet machine or a synchronous reluctance machine depending on the torque direction. If no torque is detected, then the machine type is recognized as an induction machine.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: June 6, 2017
    Assignee: ABB Research Ltd.
    Inventors: Sjoerd Bosga, Freddy Magnussen, Heinz Lendenmann, Rahul Kanchan, Reza Moghaddam Rajabi
  • Machine Type Identification
    Publication number: 20120216630
    Abstract: For identifying the machine type of an alternating current machine, a direct current is first applied to the stator for aligning the d-axis of the rotor and the magnetic field direction of the stator. Secondly, a direct current is applied to the stator at a current angle which causes the rotors of a permanent magnet machine and a synchronous reluctance machine to exert torque in different directions. The torque direction of the rotor is detected and the machine type is identified based on the torque direction information. The machine type is recognized as a permanent magnet machine or a synchronous reluctance machine depending on the torque direction. If no torque is detected, then the machine type is recognized as an induction machine.
    Type: Application
    Filed: April 27, 2012
    Publication date: August 30, 2012
    Inventors: Sjoerd Bosga, Freddy Magnussen, Heinz Lendenmann, Rahul Kanchan, Reza Moghaddam Rajabi