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Non-Destructive Electromagnetic Evaluation of Material Degradation Due to Steel Cutting in a Fully Stacked Electrical Machine

Author

Listed:
  • Ahmed Selema

    (Department of Electromechanical, Systems, and Metal Engineering, Ghent University, 9000 Ghent, Belgium
    FlandersMake@UGent, Core Lab EEDT-MP, 3001 Leuven, Belgium
    Department of Electrical Engineering, Faculty of Engineering, Menoufia University, Menoufia 32511, Egypt)

  • Mohamed N. Ibrahim

    (Department of Electromechanical, Systems, and Metal Engineering, Ghent University, 9000 Ghent, Belgium
    FlandersMake@UGent, Core Lab EEDT-MP, 3001 Leuven, Belgium
    Department of Electrical Engineering, Kafrelshiekh University, Kafrelshiekh 33511, Egypt)

  • Peter Sergeant

    (Department of Electromechanical, Systems, and Metal Engineering, Ghent University, 9000 Ghent, Belgium
    FlandersMake@UGent, Core Lab EEDT-MP, 3001 Leuven, Belgium)

Abstract

Although it is well known that the magnetic properties of electrical steel can be deeply affected by the cutting process, it is still not clear how to accurately evaluate these effects on a prototyped machine on its final shape, especially at a high frequency or a high power rating. This research provides a more practical method for accurate measurement of magnetic losses in electrical steel with consideration of material degradation effects due to the cutting process. Unlike other similar studies, these investigations are conducted not only on a few laminations but also on a complete electrical machine core. For a fair comparison between both cases, backlack bonding is used for lamination stacking since it is the most non-damaging joining technique. Two different test setups are used to measure the steel performance at a wide range of frequency and input power. Furthermore, a full axial length stator of a switched reluctance machine (SRM) is used as a case study to identify the magnetic properties of NO20 electrical steel. Additionally, by comparing the results obtained from the individual laminations and the assembled stator, the extra losses due to the cutting process and material degradation are extracted accurately.

Suggested Citation

  • Ahmed Selema & Mohamed N. Ibrahim & Peter Sergeant, 2022. "Non-Destructive Electromagnetic Evaluation of Material Degradation Due to Steel Cutting in a Fully Stacked Electrical Machine," Energies, MDPI, vol. 15(21), pages 1-17, October.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:21:p:7862-:d:951119
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    References listed on IDEAS

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    1. Ahmed Selema & Mohamed N. Ibrahim & Peter Sergeant, 2022. "Metal Additive Manufacturing for Electrical Machines: Technology Review and Latest Advancements," Energies, MDPI, vol. 15(3), pages 1-18, January.
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    Cited by:

    1. Ahmed Selema, 2023. "Material Tradeoff of Rotor Architecture for Lightweight Low-Loss Cost-Effective Sustainable Electric Drivetrains," Sustainability, MDPI, vol. 15(19), pages 1-22, October.
    2. Maria Dems & Zbigniew Gmyrek & Krzysztof Komeza, 2023. "The Influence of Cutting Technology on Magnetic Properties of Non-Oriented Electrical Steel—Review State of the Art," Energies, MDPI, vol. 16(11), pages 1-26, May.

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