On-line control method to reduce mechanical vibration and torque ripple in reluctance synchronous machine drives

In this paper a simple on-line control method is proposed to reduce torque ripple and resonance mechanical vibration due to amongst others the slot harmonic torques of the reluctance synchronous machine. Different transfer functions of the control system are derived. Hence, by keeping a certain relation between the parameters of the control system, the torque ripple is reduced without affecting the transient speed response of the drive. Digital signal processing technology was adapted for the control system. The proposed control method is verified by simulation and experimental work on an actual reluctance synchronous machine drive.