Patents by Inventor Pekko JAATINEN

Pekko JAATINEN 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).

  • Control device and a method for controlling magnetic levitation and torque generation
    Patent number: 11286983
    Abstract: An electrical drive includes an electrical machine, a first converter stage connected to terminals of stator phase-windings of the electrical machine, and a second converter stage connected to intermediate points of the stator phase-windings. A control device determines first component currents and second component currents so that torque is generated in accordance with electrical machine control and magnetic levitation force is directed to a rotor of the electrical machine in accordance with levitation control when portions of the phase-windings between the terminals and the intermediate points carry both the first and second component currents and the other portions of the phase-windings carry the first component currents. The reference currents for the first converter stage are determined based on the first and second component currents, and the reference currents for the second converter stage are determined based on the second component currents.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: March 29, 2022
    Assignee: LAPPEENRANNAN TEKNILLINEN YLIOPISTO
    Inventors: Rafal Jastrzebski, Pekko Jaatinen
  • A CONTROL DEVICE AND A METHOD FOR CONTROLLING MAGNETIC LEVITATION AND TORQUE GENERATION
    Publication number: 20180180095
    Abstract: An electrical drive includes an electrical machine, a first converter stage connected to terminals of stator phase-windings of the electrical machine, and a second converter stage connected to intermediate points of the stator phase-windings. A control device determines first component currents and second component currents so that torque is generated in accordance with electrical machine control and magnetic levitation force is directed to a rotor of the electrical machine in accordance with levitation control when portions of the phase-windings between the terminals and the intermediate points carry both the first and second component currents and the other portions of the phase-windings carry the first component currents. The reference currents for the first converter stage are determined based on the first and second component currents, and the reference currents for the second converter stage are determined based on the second component currents.
    Type: Application
    Filed: May 11, 2016
    Publication date: June 28, 2018
    Inventors: Rafal JASTRZEBSKI, Pekko JAATINEN