Patents by Inventor Carsten Rothmann

Carsten Rothmann 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).

  • Publication number: 20140076522
    Abstract: A cooling system for a power module (or some other power electronics device) is described, the cooling system having a closed flow path for circulating a cooling fluid, the flow path having a pressure that is reduced to below atmospheric pressure. The cooling fluid is circulated along the flow path to provide cooling of the power module. The flow path is delimited from the exterior environment by a space provided between the flow path and the exterior environment, said space being sealed off from the cooling flow path, and said space being sealed off towards the exterior environment. The flow path has a pressure below atmospheric pressure and the space between the flow path and the exterior environment is evacuated and typically has a pressure lower than the pressure in the flow path.
    Type: Application
    Filed: April 2, 2012
    Publication date: March 20, 2014
    Applicant: DANFOSS A/S
    Inventors: Klaus Kristen Olesen, Joergen Holst, Georg Fosel, Peter Brandt, Perer Jensen, Steen Hornsleth, Carsten Rothmann
  • Publication number: 20100237810
    Abstract: The present invention relates to a method for sensorless control of a permanent magnet motor exhibiting saliency, the method comprising the steps of determining a back electromotive force signal of a non-conducting phase winding of the permanent magnet motor, and applying a first drive voltage to at least one other phase winding of the permanent magnet motor, said first drive voltage being phase-shifted relative to the determined back electromotive force signal. Moreover, the present invention relates to a control system for carrying out the above-mentioned method.
    Type: Application
    Filed: February 18, 2010
    Publication date: September 23, 2010
    Applicant: Danfoss Compressors GmbH
    Inventors: Peter Scavenius Andersen, Carsten Rothmann, Niels Pedersen
  • Patent number: 7610771
    Abstract: A refrigerating apparatus for a refrigerator has an electrical voltage supply and an electrical interface for connection with components of the refrigerator with the interface having a galvanic isolation between an input arrangement connected with the refrigerating apparatus and an output arrangement connected with at least one component of the refrigerator.
    Type: Grant
    Filed: January 13, 2005
    Date of Patent: November 3, 2009
    Assignee: Danfoss Compressors GmbH
    Inventors: Carsten Rothmann, Ole Schebel Bachmann
  • Publication number: 20050166625
    Abstract: A refrigerating apparatus (3) for a refrigerator (1) has an electrical voltage supply (7) and an electrical interface for connection with components of the refrigerator (1) with the interface having a galvanic isolation between an input arrangement connected with the refrigerating apparatus (3) and an output arrangement connected with at least one component of the refrigerator (1).
    Type: Application
    Filed: January 13, 2005
    Publication date: August 4, 2005
    Applicant: Danfoss Compressors GmbH
    Inventors: Carsten Rothmann, Ole Bachmann