Tangential Force Reconstruction in Permanent Magnet Synchronous Machines Using Air Gap Flux Density Measurements

Pfannschmidt A, Hahn I (2025)

Publication Type: Conference contribution

Publication year: 2025

Publisher: IEEE

City/Town: New York City

Pages Range: 1-7

Conference Proceedings Title: 2025 International Conference on Electrical Drives and Power Electronics (EDPE)

Event location: Dubrovnik HR

DOI: 10.1109/EDPE66853.2025.11224249

Abstract

Numerical solutions of electromagnetic field equations within the air gap of electrical machines are in need of experimental verification. In this manuscript, a measurement method using coils on a flexible printed circuit for determining the tangential force acting on the stator teeth within the machine’s air gap is proposed. The coil’s induced voltage as well as the numerical tangential force calculation from simulation are theorized. As a result, two different coil designs are presented that each reconstruct the tangential flux density as a spatial average on the tooth flank and the air gap surface of an electrical machine’s single stator tooth. Through Maxwell’s stress tensor and the normal force, a comparison is carried out that shows an overestimation of the force calculated by utilizing the tensor on the air gap surface and an underestimation when using the normal force on the tooth flank in comparison with results from simulation. Overall acceptable results for the expected force harmonics are yielded. Additional orders of tangential force due to manufacturing and construction tolerances are quantified. Design improvements for future applications are given in order to reconstruct the spatial tangential force distribution more precisely.

Authors with CRIS profile

Alexander Pfannschmidt Professur für Elektrische Antriebe und Maschinen Ingo Hahn Professur für Elektrische Antriebe und Maschinen

How to cite

APA:

Pfannschmidt, A., & Hahn, I. (2025). Tangential Force Reconstruction in Permanent Magnet Synchronous Machines Using Air Gap Flux Density Measurements. In 2025 International Conference on Electrical Drives and Power Electronics (EDPE) (pp. 1-7). Dubrovnik, HR: New York City: IEEE.

MLA:

Pfannschmidt, Alexander, and Ingo Hahn. "Tangential Force Reconstruction in Permanent Magnet Synchronous Machines Using Air Gap Flux Density Measurements." Proceedings of the 2025 International Conference on Electrical Drives and Power Electronics (EDPE), Dubrovnik New York City: IEEE, 2025. 1-7.

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