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Effect of mechanical stress on different core loss components along orthogonal directions in electrical steels

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Abstract

The paper deals with the characterization and modelling of the mechanical stress dependency of magnetic losses along two orthogonal directions in non-oriented electrical steels. Significant anisotropy effects are highlighted. Using the three-term loss-separation approach, the different loss components are computed at each stress level for a wide range of frequency. Stress dependence of the core losses can be described in terms of the hysteresis and excess loss components, classical losses being assumed to be constant as a function of stress. Variations of the model coefficients with stress along the two principal directions are discussed. Such a model can be used for computing the losses in finite element analysis of rotating electrical machines or T-joint of transformers.

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Acknowledgements

This work is a part of the COCTEL project coordinated by RENAULT-SAS, Guyancourt, France, and funded by ADEME (French Environment and Energy Management Agency).

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Authors and Affiliations

  1. GeePs | Group of Electrical Engineering - Paris, UMR CNRS 8507 CentraleSupélec, Univ. Paris-Sud, Univ. Paris-Saclay, Sorbonne Université, 3-11 rue Joliot-Curie, Gif-sur-Yvette, 91192, France

    A. P. S. Baghel, L. Santandrea, G. Krebs & L. Daniel

  2. Renault, 1 avenue du Golf, 78288, Guyancourt, France

    J. B. Blumenfeld

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  1. A. P. S. Baghel
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  2. J. B. Blumenfeld
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  3. L. Santandrea
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  5. L. Daniel
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Correspondence to L. Daniel.

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Baghel, A.P.S., Blumenfeld, J.B., Santandrea, L. et al. Effect of mechanical stress on different core loss components along orthogonal directions in electrical steels. Electr Eng 101, 845–853 (2019). https://doi.org/10.1007/s00202-019-00827-4

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  • DOI: https://doi.org/10.1007/s00202-019-00827-4

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