Patents by Inventor Piotr Adam Jakubowski

Piotr Adam Jakubowski 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).

  • Electrical machine rotor position identification
    Patent number: 7233123
    Abstract: A method of and system for identifying the position of magnetic poles of a rotor of a multi-phase electrical machine relative to a stator of that machine is disclosed. The method includes the steps of applying a voltage pulse to stator windings of each phase, sensing current flow in the stator windings of each phase due to the application of the voltage pulse to the respective stator windings and determining the position of the magnetic poles of the rotor relative to the stator using the sensed current flow in the stator windings of each phase. The method is characterized in that the phases of the stator windings are star-connected at a neutral junction and the voltage pulse is applied to the stator windings of each phase in parallel.
    Type: Grant
    Filed: July 5, 2005
    Date of Patent: June 19, 2007
    Assignee: Cummins Generator Technologies Limited
    Inventors: Wlodzimierz Koczara, Piotr Adam Jakubowski