Analytical and numerical approaches for the prediction of resonance frequencies of a switched reluctance machine

Natural resonance frequencies of switched reluctance machines utilized in the automotive industry are mainly governing the acoustic behaviour during the steady operational states. Thus, a deeper knowledge about the material and geometric quantities and their influence on the free dynamic vibration, in particular of the stator part, is commonly seen to be of crucial interest for an improved machine design with reduced noise emission. Analytical and numerical methods are developed for the special application to switched reluctance drives in order to investigate the effects of different materials and various arrangements of embedded winding and insulation portions to the free dynamic stator yoke response.