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Material Tradeoff of Rotor Architecture for Lightweight Low-Loss Cost-Effective Sustainable Electric Drivetrains

Author

Listed:
  • Ahmed Selema

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

Abstract

The art of the successful design of high-speed electrical machines comes with many challenges in the mass, size, reliability, and energy efficiency. Material engineering of electrical machines has been identified as a key solution for higher power dense electric drivetrains. One of the main challenges at high speed is the eddy-current losses in the active electromagnetic parts, especially magnetic materials and permanent magnets (PMs). This study is devoted to the selection of PM rotor materials using multidisciplinary design optimization for a high-speed electric drivetrain. Beside AC loss minimization, more disciplines are considered, such as the minimization of weight, and cost. Different laminations are investigated with different magnetic properties as well as cost. Additionally, different PMs are optimized considering low-cost ferrite and high-coercivity permanent magnets (HCPMs). Moreover, the optimal materials are identified which have the best balance between loss, weight, cost, ripples. Finally, different rotor designs are prototyped, assembled, and tested using the same stator configuration. Also, the best rotor design is selected, and the electromagnetic performance is measured and compared with conventional designs. The optimal design results in 8% extra torque with at least 20% weight reduction.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:19:p:14413-:d:1252202
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    References listed on IDEAS

    as
    1. 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.
    2. Joseph Abed & Scott Rayburg & John Rodwell & Melissa Neave, 2022. "A Review of the Performance and Benefits of Mass Timber as an Alternative to Concrete and Steel for Improving the Sustainability of Structures," Sustainability, MDPI, vol. 14(9), pages 1-24, May.
    Full references (including those not matched with items on IDEAS)

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