On the cross coupling effects in structural response of switched reluctance motor drives

Vibration and acoustic noise in switched reluctance motor (SRM) drives have been studied by many researchers. However, most of studies are related to vibration in the stator of SRM caused by radial forces acting on the stator itself. In this paper, a complete vibration analysis for a SRM assembly is conducted which considers the stator and rotor vibrations caused by electromagnetic forces as well as mechanical coupling between stator and rotor. Acceleration in the stator and rotor are computed using impulse response method under hysteresis current excitation. Our investigation illustrates a coupling between stator and rotor and its impact on the overall structural response of the machine.