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Analytical expressions of the dynamic magnetic power loss under alternating or rotating magnetic field

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  • Ducharne, B.
  • Sebald, G.

Abstract

Analytical methods are recommended for rapid predictions of the magnetic core loss as they require less computational resources and offer straightforward sensitivity analysis. This paper proposes analytical expressions of the dynamic magnetic power loss under an alternating or rotating magnetic field. The formulations rely on fractional derivative analytical expressions of trigonometric functions. The simulation method is validated on extensive experimental data obtained from state-of-the-art setups and gathered in the scientific literature. Five materials are tested for up to at least 1 kHz in both alternating and rotating conditions. The relative Euclidean distance between the simulated and experimentally measured power loss is lower than 5 % for most tested materials and always lower than 10 %. In standard characterization conditions, i.e., sinusoidal flux density, the dynamic power loss contribution under a rotating magnetic field is shown to be precisely two times higher than an alternating one. The knowledge of electrical conductivity reduces the dynamic magnetic power loss contribution to a single parameter (the fractional order). This parameter has the same value for a given material's rotational and alternating contribution. This study confirms the viscoelastic behavior of the magnetization process in ferromagnetic materials and, consequently, the relevance of the fractional derivative operators for their simulation.

Suggested Citation

  • Ducharne, B. & Sebald, G., 2025. "Analytical expressions of the dynamic magnetic power loss under alternating or rotating magnetic field," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 229(C), pages 340-349.
    • Handle: RePEc:eee:matcom:v:229:y:2025:i:c:p:340-349
    DOI: 10.1016/j.matcom.2024.10.009
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    References listed on IDEAS

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    1. Zhang, Jian & Tounzi, Abdelmounaim & Benabou, Abdelkader & Le Menach, Yvonnick, 2021. "Detection of magnetization loss in a PMSM with Hilbert Huang transform applied to non-invasive search coil voltage," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 184(C), pages 184-195.
    2. Arthi, G. & Park, Ju H. & Suganya, K., 2019. "Controllability of fractional order damped dynamical systems with distributed delays," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 165(C), pages 74-91.
    3. J. A. Tenreiro Machado & Manuel F. Silva & Ramiro S. Barbosa & Isabel S. Jesus & Cecília M. Reis & Maria G. Marcos & Alexandra F. Galhano, 2010. "Some Applications of Fractional Calculus in Engineering," Mathematical Problems in Engineering, Hindawi, vol. 2010, pages 1-34, November.
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