Patents by Inventor Alexander Rosen

Alexander Rosen 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 AND CONTROL METHOD FOR AN ELECTRIC DRIVE SYSTEM, AND ELECTRIC DRIVE SYSTEM
    Publication number: 20230327599
    Abstract: The present invention relates to controlling an electric drive system. According to the invention, the rotor temperature of an electrical machine is monitored and modulation methods and the switching frequency for controlling the drive system are adapted depending on the rotor temperature.
    Type: Application
    Filed: April 30, 2021
    Publication date: October 12, 2023
    Inventors: Alexander Rosen, Helge Sprenger, Michael Bangerter, Thomas Zeltwanger
  • Method and device for operating an electric machine for outputting a predefined torque and a predefined rotational speed
    Patent number: 11558003
    Abstract: The invention relates to a method and device for operating an electric machine (10) for outputting a predefined torque and a predefined rotational speed, comprising the following steps: providing (420) a first and a second operating mode for the operation of the electric machine (10); detecting (430) a temperature of the electric machine (10); and operating the electric machine (10) in the first operating mode (440) if the detected temperature falls below a threshold value, and operating the electric machine (10) in the second operating mode (450) if the detected temperature corresponds with the threshold value or exceeds same.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: January 17, 2023
    Assignee: Robert Bosch GmbH
    Inventors: Alexander Rosen, Michael Bangerter
  • METHOD AND DEVICE FOR OPERATING AN ELECTRIC MACHINE FOR OUTPUTTING A PREDEFINED TORQUE AND A PREDEFINED ROTATIONAL SPEED
    Publication number: 20200313600
    Abstract: The invention relates to a method and device for operating an electric machine (10) for outputting a predefined torque and a predefined rotational speed, comprising the following steps: providing (420) a first and a second operating mode for the operation of the electric machine (10); detecting (430) a temperature of the electric machine (10); and operating the electric machine (10) in the first operating mode (440) if the detected temperature falls below a threshold value, and operating the electric machine (10) in the second operating mode (450) if the detected temperature corresponds with the threshold value or exceeds same.
    Type: Application
    Filed: October 10, 2018
    Publication date: October 1, 2020
    Inventors: Alexander Rosen, Michael Bangerter