Patents by Inventor Pasi Peltoniemi

Pasi Peltoniemi 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).

  • Method and an apparatus for controlling an electrical machine with two or more multiphase stator windings
    Patent number: 9444386
    Abstract: An apparatus comprises a processing system (201) configured to produce voltage control signals for controlling an electrical machine (202) comprising two or more multiphase stator windings. The processing system is configured to produce the voltage control signals on the basis of rotation-converted stator currents expressed in a coordinate system bound to a rotor of the electrical machine and on the basis of a model of the electrical machine modeling at least inductances of the multiphase stator windings and mutual inductances between the multiphase stator windings. The processing system is configured to convert phase currents of the multiphase stator windings into the rotation-converted stator currents with a conversion rule corresponding to a form of the model of the electrical machine where each of the stator flux-linkages of the model is dependent on only one of the rotation-converted stator currents in spite of the mutual inductances between the multiphase stator windings.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: September 13, 2016
    Assignee: THE SWITCH DRIVE SYSTEMS OY
    Inventors: Tomi Knuutila, Riku Pöllänen, Samuli Kallio, Pasi Peltoniemi, Jussi Karttunen
  • METHOD AND AN APPARATUS FOR CONTROLLING AN ELECTRICAL MACHINE WITH TWO OR MORE MULTIPHASE STATOR WINDINGS
    Publication number: 20150229261
    Abstract: An apparatus comprises a processing system (201) configured to produce voltage control signals for controlling an electrical machine (202) comprising two or more multiphase stator windings. The processing system is configured to produce the voltage control signals on the basis of rotation-converted stator currents expressed in a coordinate system bound to a rotor of the electrical machine and on the basis of a model of the electrical machine modeling at least inductances of the multiphase stator windings and mutual inductances between the multiphase stator windings. The processing system is configured to convert phase currents of the multiphase stator windings into the rotation-converted stator currents with a conversion rule corresponding to a form of the model of the electrical machine where each of the stator flux-linkages of the model is dependent on only one of the rotation-converted stator currents in spite of the mutual inductances between the multiphase stator windings.
    Type: Application
    Filed: May 25, 2012
    Publication date: August 13, 2015
    Applicant: THE SWITCH DRIVE SYSTEMS OY
    Inventors: Tomi Knuutila, Riku Pöllänen, Samuli Kallio, Pasi Peltoniemi, Jussi Karttunen