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Asymmetric Stator Slot Opening Geometry for PMSM NVH Optimisation

par Raia, Maria Raluca;Ciceo, Sebastian;Chauvicourt, Fabien ;Martis, Claudia
Référence IECON Proceedings (Industrial Electronics Conference)
Publication Publié, 2023

Article révisé par les pairs

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Résumé :

With the increasing demands for high-performance electrical machines, the noise, vibration and harshness characteristics can be improved by performing geometrical design modifications. One of the methods presented in literature is to change the motor cross-section geometry by introducing geometry asymmetry, with good results in improving machine's electromagnetic performances. This paper studies the influence of stator slot opening asymmetries on the vibration response of a permanent magnet synchronous machine (PMSM). The conventionally symmetrical slot opening geometry will experience an additional cut on one side of the tooth and on the other side, additional soft magnetic material, in order to keep the original slot opening width constant. The results show that the introduction of the same level of asymmetry on all stator slots opening does not improve the vibration characteristics.