Patents by Inventor Dierk ORTMANN

Dierk ORTMANN 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).

  • Controller and method for detecting a blocked state of an electrical machine
    Patent number: 10333451
    Abstract: A blockage detector for detecting a blocked state of an electrical machine has: a first power determiner and a second power determiner for determining a first power consumption and a second power consumption of the electrical machine while a first phase voltage and a second phase voltage for operating at a first rotating field speed and a second rotating field speed are applied to the electrical machine, a quotient former for producing a power quotient between the first power consumption and the second power consumption; and a comparator for comparing the power quotient with a threshold value for the power quotient. The invention also relates to an inverter controller, an inverter, a drive, ventilation or air-conditioning system and a vehicle having a blockage detector according to the invention. In addition, the invention relates to a corresponding method for detecting a blocked state of an electrical machine.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: June 25, 2019
    Assignee: MAGNA POWERTRAIN BAD HOMBURG GMBH
    Inventor: Dierk Ortmann
  • CONTROLLER AND METHOD FOR DETECTING A BLOCKED STATE OF AN ELECTRICAL MACHINE
    Publication number: 20170373631
    Abstract: A blockage detector for detecting a blocked state of an electrical machine has: a first power determiner and a second power determiner for determining a first power consumption and a second power consumption of the electrical machine while a first phase voltage and a second phase voltage for operating at a first rotating field speed and a second rotating field speed are applied to the electrical machine, a quotient former for producing a power quotient between the first power consumption and the second power consumption; and a comparator for comparing the power quotient with a threshold value for the power quotient. The invention also relates to an inverter controller, an inverter, a drive, ventilation or air-conditioning system and a vehicle having a blockage detector according to the invention. In addition, the invention relates to a corresponding method for detecting a blocked state of an electrical machine.
    Type: Application
    Filed: January 15, 2016
    Publication date: December 28, 2017
    Inventor: Dierk ORTMANN