Patents by Inventor Pasi Kukkonen

Pasi Kukkonen 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).

  • Parallel connection of inverters
    Patent number: 7773396
    Abstract: Method for synchronizing inverter units (INU11, INU12) that are connected in parallel and supply a motor, and a parallel connection arrangement, in which motor is either one winding, which is supplied by inverter units connected in parallel, or a plurality of parallel windings, in which each winding is supplied by its own inverter unit, in which parallel connection one inverter unit functions as a master and the others as slaves, in which method a telecommunications bus is arranged between the units, and in which each inverter unit has its own modulation cycle counter, which are synchronized with each other on the basis of telecommunications messages, preferably serial telecommunications messages.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: August 10, 2010
    Assignee: Vacon Oyj
    Inventors: Jaakko Ollila, Pasi Kukkonen, Kimmo Rajakangas, Stefan Strandberg
  • Parallel connection of inverters
    Publication number: 20080073978
    Abstract: Method for synchronizing inverter units (INU11, INU12) that are connected in parallel and supply a motor, and a parallel connection arrangement, in which motor is either one winding, which is supplied by inverter units connected in parallel, or a plurality of parallel windings, in which each winding is supplied by its own inverter unit, in which parallel connection one inverter unit functions as a master and the others as slaves, in which method a telecommunications bus is arranged between the units, and in which each inverter unit has its own modulation cycle counter, which are synchronized with each other on the basis of telecommunications messages, preferably serial telecommunications messages.
    Type: Application
    Filed: September 18, 2007
    Publication date: March 27, 2008
    Inventors: Jaakko Ollila, Pasi Kukkonen, Kimmo Rajakangas, Stefan Strandberg