Abstract: The switched reluctance motor (SRM) benefits from attractive features making it a much suitable candidate for electric vehicle powertrain applications. However, the troublesome acoustic noise, originating from the SRM stator modal deformations, is still to be overcome. The present investigation established a reliable measuremen  procedure to assess the SRM stator structural dynamics. A miniature-shaker spectral test was implemented and compared with the more conventional impulse hammer test. After assessment of the transfer paths reciprocity and modal analysis of the measured frequency response functions (FRFs), a clear mapping of the structural behaviour of an SRM stator was established. The determined modal parameters were correlated
to previous theoretical and experimental research results. The final outcome is to provide new insights for designers willing to develop the next generations of SRMs.

Key words: electric vehicle, switched reluctance motors (SRM), miniature-shaker spectral test, impulse hammer test, modal analysis, stator mode shapes