Patents by Inventor Andreas Aupke

Andreas Aupke 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).

  • Frequency converter for different mains voltages
    Patent number: 7221121
    Abstract: The invention is directed to controlling an electric motor by means of a frequency converter. The frequency converter can be connected to one of several different mains voltages. According to the present invention, the maximum output power of the frequency converter, is limited when the actual mains voltage is lower than the maximum nominal mains voltage, for which the frequency converter is designed, and during the limitation the frequency converter controls the speed of the motor within a power range up to a limited maximum output power. This gives a genuine multi-voltage unit, which can be connected to a wide range of mains voltages.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: May 22, 2007
    Assignee: Danfoss Drives A/S
    Inventors: Kenneth Skaug, Michael Toennes, Nils-Ole Harvest, Egon Krogh, Andreas Aupke
  • Frequency converter for different mains voltages
    Publication number: 20050068001
    Abstract: The invention is directed to controlling an electric motor by means of a frequency converter. The frequency converter can be connected to one of several different mains voltages. According to the present invention, the maximum output power of the frequency converter, is limited when the actual mains voltage is lower than the maximum nominal mains voltage, for which the frequency converter is designed, and during the limitation the frequency converter controls the speed of the motor within a power range up to a limited maximum output power. This gives a genuine multi-voltage unit, which can be connected to a wide range of mains voltages.
    Type: Application
    Filed: November 21, 2002
    Publication date: March 31, 2005
    Applicant: Danfoss Drives A/S
    Inventors: Kenneth Skaug, Michael Toennes, Nils-Ole Harvest, Egon Krogh, Andreas Aupke