The vastly increased range of operating speeds and loads of electric vehicle (EV) traction motors implies that the use of traditional finite element (FE)-based noise vibration and harshness (NVH) optimization methodologies becomes challenging due to extensive computational loads. Thus, reduced-order analytical methodologies have become of crucial significance for fast decision-making at predesign stages. In this work, a novel combination of analytical techniques is utilized, to formulate a multiphysics methodology for electromagnetic (EM) NVH prediction of typical high-speed surface-mounted permanent magnet synchronous machines (S-PMSMs). Calculation of the EM stresses in open-circuit conditions was performed using the 2-D complex permeance (CP) methodology. Vibroacoustic predictions were made using analytical expressions for an equivalent 2-D representing the stator. Unlike traditional analytical methodologies, further refinements were implemented to improve the accuracy of the vibroacoustic calculations without sacrificing computational efficiency, through a set of force transformation techniques. These allowed for consideration of the tooth modulation and tangential excitation effects, which are typically neglected in similar studies. The methodology was applied on a 48-slot 8-pole S-PMSM with EM and vibroacoustic results validated numerically. A fast parametric study was performed on the design parameters for the optimization of the generated force harmonics, achieving significant reductions in the sound power levels (SWL) at specific frequencies.


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    Titel :

    Analytical Multiphysics Methodology to Predict Vibroacoustics in PMSMs Combining Tangential Electromagnetic Excitation and Tooth Modulation Effects


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    01.09.2024


    Format / Umfang :

    3628224 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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