Time domain analysis of vibration and acoustic noise in the switched reluctance drive

This paper describes the results of an extensive study into the production of acoustic noise and vibration in the switched reluctance motor drive. Time domain analysis has been used to draw conclusions about the effects of changing the operating parameters of the power electronic controller on the vibration and acoustic noise. Experimental results have been taken from a four phase switched reluctance motor drive with one, two or four phase excitation. The results of this time domain study reveal important information which would not be apparent from frequency spectra. The results can be used to derive control laws for the power electronic controller to reduce the acoustic noise and vibration produced by the motor.