Patents by Inventor Jyrki K. Ahlgren

Jyrki K. Ahlgren 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).

  • System and method of controlling power to a non-motor load
    Patent number: 7932693
    Abstract: A motor drive for conditioning power to be delivered to a non-motor load includes a voltage feedback circuit that monitors a DC bus voltage and, based on changes in the DC bus voltage, adjusts a power conditioning scheme such that near steady-state load conditions are maintained in response to a transient load condition. The voltage feedback circuit has a voltage sensor that provides voltage feedback to a controller that determines what changes in power conditioning are needed in response to a transient load condition that manifests itself in a change in DC bus voltage.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: April 26, 2011
    Assignee: Eaton Corporation
    Inventors: Kevin Lee, Jyrki K. Ahlgren, Ian T. Wallace, Thomas M. Doring
  • System and method of controlling the start-up of an adjustable speed motor drive based sinusoidal output power conditioner
    Patent number: 7468595
    Abstract: A motor drive for conditioning power to be delivered to a load includes a current feedback circuit that monitors current being fed to a transformer connected between the motor drive and the load. Based on the total current input to the transformer, a controller adjusts the V/Hz profile along which the motor drive operates. In this regard, the motor drive operates according to a V/Hz profile during start-up that prevents transformer saturation.
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: December 23, 2008
    Assignee: Eaton Corporation
    Inventors: Kevin Lee, Jyrki K. Ahlgren, Ian T. Wallace, Thomas M. Doring