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Accelerated 3D FEA of an Axial Flux Machine by Exclusively Using the Magnetic Scalar Potential

Author

Listed:
  • Adrian Schäfer

    (Institute of Electrical Energy Conversion, University of Stuttgart, Pfaffenwaldring 47, 70569 Stuttgart, Germany)

  • Urs Pecha

    (Institute of Electrical Energy Conversion, University of Stuttgart, Pfaffenwaldring 47, 70569 Stuttgart, Germany)

  • Benedikt Kaiser

    (Institute of Electrical Energy Conversion, University of Stuttgart, Pfaffenwaldring 47, 70569 Stuttgart, Germany)

  • Martin Schmid

    (Institute of Electrical Energy Conversion, University of Stuttgart, Pfaffenwaldring 47, 70569 Stuttgart, Germany)

  • Nejila Parspour

    (Institute of Electrical Energy Conversion, University of Stuttgart, Pfaffenwaldring 47, 70569 Stuttgart, Germany)

Abstract

This article focuses on increasing the computational efficiency of 3D multi-static magnetic finite element analysis (FEA) for electrical machines (EMs), which have a magnetic field evolving in 3D space. Although 3D FEA is crucial for analyzing these machines and their operational behavior, it is computationally expensive. A novel approach is proposed in order to solve the magnetic field equations by exclusively using the magnetic scalar potential. For this purpose, virtual variable permanent magnets (vPMs) are introduced to model the impact of the machine’s coils. The effect on which this approach is based is derived from and explained by Maxwell’s equations. To validate the new approach, an axial flux machine (AFM) is simulated using both 2D and 3D FEA with the magnetic vector potential and current-carrying coils as a reference. The results demonstrate a high level of agreement between the new approach and the reference simulations as well as an acceleration of the computation by a factor of 15 or even more. Additionally, the research provides valuable insights into meshing techniques and torque calculation for EMs in FEA.

Suggested Citation

  • Adrian Schäfer & Urs Pecha & Benedikt Kaiser & Martin Schmid & Nejila Parspour, 2023. "Accelerated 3D FEA of an Axial Flux Machine by Exclusively Using the Magnetic Scalar Potential," Energies, MDPI, vol. 16(18), pages 1-24, September.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:18:p:6596-:d:1239127
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    References listed on IDEAS

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    1. Wei Le & Mingyao Lin & Keman Lin & Kai Liu & Lun Jia & Anchen Yang & Shuai Wang, 2021. "A Novel Stator Cooling Structure for Yokeless and Segmented Armature Axial Flux Machine with Heat Pipe," Energies, MDPI, vol. 14(18), pages 1-15, September.
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