Patents by Inventor Franz Prenner

Franz Prenner 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 device for determining a rotor temperature value for an electric motor
    Patent number: 11742727
    Abstract: Disclosed is a method for determining a rotor temperature value TRot for an electric machine, such as an electric motor. In one example, the method includes calculating a support value Pcu2_Trot using a rotor temperature value Trot that is determined with a temperature model and a motor current value Isdq. An auxiliary value Pcu2_Ref can be determined using a motor torque Trq and a motor slip value ?slip. The support value Pcu2_Trot can be linked with the auxiliary value Pcu2_Ref in order to obtain a corrected rotor temperature value DeltaTrot. Furthermore, the temperature model can be modified using the corrected rotor temperature value DeltaTrot in order to obtain a corrected temperature model. Finally, the rotor temperature value TRot can be determined using the corrected temperature model.
    Type: Grant
    Filed: March 17, 2022
    Date of Patent: August 29, 2023
    Assignee: ZF Friedrichshafen AG
    Inventors: Franz Prenner, Oussama Jabloun
  • METHOD AND DEVICE FOR DETERMINING A ROTOR TEMPERATURE VALUE FOR AN ELECTRIC MOTOR
    Publication number: 20220311313
    Abstract: Disclosed is a method for determining a rotor temperature value TRot for an electric machine, such as an electric motor. In one example, the method includes calculating a support value Pcu2_Trot using a rotor temperature value Trot that is determined with a temperature model and a motor current value Isdq. An auxiliary value Pcu2_Ref can be determined using a motor torque Trq and a motor slip value ?slip. The support value Pcu2_Trot can be linked with the auxiliary value Pcu2_Ref in order to obtain a corrected rotor temperature value DeltaTrot. Furthermore, the temperature model can be modified using the corrected rotor temperature value DeltaTrot in order to obtain a corrected temperature model. Finally, the rotor temperature value TRot can be determined using the corrected temperature model.
    Type: Application
    Filed: March 17, 2022
    Publication date: September 29, 2022
    Applicant: ZF Friedrichshafen AG
    Inventors: Franz Prenner, Oussama Jabloun
  • Method, apparatus and article for load stabilization
    Patent number: 7456598
    Abstract: A system, method, and article for protecting a power source for a machine from sudden changes in load. In one embodiment, energy is wasted in a winding of a motor in response to a decrease in a load presented to the power source.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: November 25, 2008
    Assignee: Continental Automotive Systems US. Inc.
    Inventors: Richard J. Hampo, Venkatapathi R. Nallapa, Franz Prenner
  • METHOD, APPARATUS AND ARTICLE FOR LOAD STABILIZATION
    Publication number: 20080136363
    Abstract: A system, method, and article for protecting a power source for a machine from sudden changes in load. In one embodiment, energy is wasted in a winding of a motor in response to a decrease in a load presented to the power source.
    Type: Application
    Filed: January 31, 2008
    Publication date: June 12, 2008
    Applicant: CONTINENTAL AUTOMOTIVE SYSTEMS US, INC.
    Inventors: Richard J. Hampo, Venkatapathi R. Nallapa, Franz Prenner
  • Method, apparatus and article for load stabilization
    Patent number: 7348750
    Abstract: A system, method, and article for protecting a power source for a machine from sudden changes in load. In one embodiment, energy is wasted in a winding of a motor in response to a decrease in a load presented to the power source.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: March 25, 2008
    Assignee: Continential Automotive Systems US, Inc.
    Inventors: Richard J. Hampo, Venkatapathi R. Nallapa, Franz Prenner
  • Method, apparatus and article for load stabilization
    Publication number: 20060119306
    Abstract: A system, method, and article for protecting a power source for a machine from sudden changes in load. In one embodiment, energy is wasted in a winding of a motor in response to a decrease in a load presented to the power source.
    Type: Application
    Filed: December 3, 2004
    Publication date: June 8, 2006
    Inventors: Richard Hampo, Venkatapathi Nallapa, Franz Prenner