Patents by Inventor Sven LUTHARDT

Sven LUTHARDT 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).

  • Method and apparatus for operating a synchronous machine having a permanent-magnet rotor
    Patent number: 10707793
    Abstract: A method for operating a synchronous machine having a rotor, comprising the following features: the synchronous machine is modelled, with respect to the rotor, as a two-phase system with a direct-axis current and a quadrature-axis current, rotor losses of the synchronous machine, which rotor losses occur in the rotor, are numerically described by an evaluation function of the first direct-axis current, of the quadrature-axis current and of a specified rotation speed of the synchronous machine, and, on the basis of the evaluation function, the direct-axis current and the second quadrature-axis current are controlled for the specified rotation speed and a required torque in such a way that the synchronous machine outputs the required torque and the rotor losses are low and a corresponding synchronous machine, a corresponding computer program and a corresponding storage medium.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: July 7, 2020
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Jan Nägelkrämer, Axel Heitmann, Thomas Hubert, Sven Luthardt, Stefan Schmitz
  • METHOD AND APPARATUS FOR OPERATING A SYNCHRONOUS MACHINE HAVING A PERMANENT-MAGNET ROTOR
    Publication number: 20190356254
    Abstract: A method for operating a synchronous machine having a rotor, comprising the following features: the synchronous machine is modelled, with respect to the rotor, as a two-phase system with a direct-axis current and a quadrature-axis current, rotor losses of the synchronous machine, which rotor losses occur in the rotor, are numerically described by an evaluation function of the first direct-axis current, of the quadrature-axis current and of a specified rotation speed of the synchronous machine, and, on the basis of the evaluation function, the direct-axis current and the second quadrature-axis current are controlled for the specified rotation speed and a required torque in such a way that the synchronous machine outputs the required torque and the rotor losses are low and a corresponding synchronous machine, a corresponding computer program and a corresponding storage medium.
    Type: Application
    Filed: May 15, 2018
    Publication date: November 21, 2019
    Applicant: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Jan Nägelkrämer, Axel HEITMANN, Thomas HUBERT, Sven LUTHARDT, Stefan SCHMITZ