Patents by Inventor Stefan Toader

Stefan Toader 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).

  • Stator core or a rotor core for an electrical machine with reduced eddy current losses and high magnetic conductivity and mechanical strength
    Patent number: 10992192
    Abstract: A stator core or a rotor core for an electrical machine, the core including a plurality of teeth separated by slots in a circumferential direction of the core, and a plurality of lamination stacks arranged one after another in an axial direction of the core, and separated from each other in the axial direction by cooling ducts. Each lamination stack includes at its each end in the axial direction at least one slit tooth section providing a discontinuity in the electrical conductivity of the lamination material and thereby reducing eddy current losses at the respective slit tooth section, and between the slit tooth sections at least one regular tooth section.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: April 27, 2021
    Assignee: ABB Schweiz AG
    Inventors: Konstantina Bitsi, Reza Rajabi Moghaddam, Stefan Toader
  • A Stator Core Or A Rotor Core For An Electrical Machine With Reduced Eddy Current Losses And High Magnetic Conductivity And Mechanical Strength
    Publication number: 20200336025
    Abstract: A stator core or a rotor core for an electrical machine, the core including a plurality of teeth separated by slots in a circumferential direction of the core, and a plurality of lamination stacks arranged one after another in an axial direction of the core, and separated from each other in the axial direction by cooling ducts. Each lamination stack includes at its each end in the axial direction at least one slit tooth section providing a discontinuity in the electrical conductivity of the lamination material and thereby reducing eddy current losses at the respective slit tooth section, and between the slit tooth sections at least one regular tooth section.
    Type: Application
    Filed: November 13, 2018
    Publication date: October 22, 2020
    Inventors: Konstantina Bitsi, Reza Rajabi Moghaddam, Stefan Toader