Patents by Inventor Pasi Matti Lauri

Pasi Matti Lauri 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).

  • Harmonic mitigating filter
    Patent number: 6844794
    Abstract: A filter for mitigating harmonics in an electrical distribution system. In one embodiment the filter has one winding that is connected to the power distribution system which may be a three phase system and capacitors are connected to other end of the winding in either a delta or y-connection. There is one tapping on the winding for connection to a load which may an adjustable speed drive. In another embodiment the filter has two or more separate reactors. In either embodiment a switch may be in series with the capacitors and capacitors may be connected in parallel with the series combination of switch and capacitors.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: January 18, 2005
    Assignee: ABB Oy
    Inventor: Pasi Matti Lauri
  • Harmonic mitigating filter
    Publication number: 20040066253
    Abstract: A filter for mitigating harmonics in an electrical distribution system. In one embodiment the filter has one winding that is connected to the power distribution system which may be a three phase system and capacitors are connected to other end of the winding in either a delta or y-connection. There is one tapping on the winding for connection to a load which may an adjustable speed drive. In another embodiment the filter has two or more separate reactors. In either embodiment a switch may be in series with the capacitors and capacitors may be connected in parallel with the series combination of switch and capacitors.
    Type: Application
    Filed: October 8, 2002
    Publication date: April 8, 2004
    Applicant: ABB Oy
    Inventor: Pasi Matti Lauri