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Volumic Eddy-Current Losses in Conductive Massive Parts with Experimental Validations

Author

Listed:
  • Antony Plait

    (Département ENERGIE, FEMTO-ST, CNRS, University Bourgogne Franche-Comté, F90000 Belfort, France)

  • Frédéric Dubas

    (Département ENERGIE, FEMTO-ST, CNRS, University Bourgogne Franche-Comté, F90000 Belfort, France)

Abstract

In this paper, the analytical determination of volumic eddy-current losses in rectangular-shaped conductive massive parts is presented with experimental validations. Eddy currents, as well as the resulting volumic losses, are generated by a sinusoidal spatially uniform applied magnetic field. A U-shaped electromagnetic device with a flat mobile armature (or adjustable air gap) is used to measure the eddy-current losses. The experimental device, its instrumentation, and the conductive massive parts are presented in detail in the paper. Thereafter, the magnetic field distribution applied on the conductive massive parts, which is the mean input data for the eddy-current loss model, is studied. A two-dimensional (2D) numerical model, under the FEMM software, for the magnetic field calculation was also developed. A comparative analysis between the experimental measurements and the numerical results allowed the distribution of the applied magnetic field to be accurately validated. In the final phase, the objective was to estimate the volumic eddy-current losses in rectangular-shaped aluminium conductive massive parts generated by the variation of this applied magnetic field. An analytical model, based on the Maxwell–Fourier method, for the accurate prediction of eddy-current losses has also been developed. An electromagnet with and without the conductive massive parts is characterized in terms of power consumption. By using the power conservation method (i.e., Boucherot’s theorem), the eddy-current losses could be quantified experimentally. The influence of segmentation is also studied. The analytical results are compared to the experimental test results.

Suggested Citation

  • Antony Plait & Frédéric Dubas, 2022. "Volumic Eddy-Current Losses in Conductive Massive Parts with Experimental Validations," Energies, MDPI, vol. 15(24), pages 1-21, December.
  • Handle: RePEc:gam:jeners:v:15:y:2022:i:24:p:9413-:d:1001342
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    References listed on IDEAS

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    1. Samith Sirimanna & Thanatheepan Balachandran & Kiruba Haran, 2022. "A Review on Magnet Loss Analysis, Validation, Design Considerations, and Reduction Strategies in Permanent Magnet Synchronous Motors," Energies, MDPI, vol. 15(17), pages 1-16, August.
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