Instantaneous current profiling control for minimizing torque ripple in switched reluctance servo motor

Abstract

This paper presents a study on control strategy for torque ripple reduction in switched reluctance servo motor. It has been revealed that instantaneous current profiling technique is one of the effective solution to suppress the torque ripple in SR motor. The proposed control consists of ideal current reference profile generation and current tracking control. Assuming that the actual current can accurately follow the commanded one, it is confirmed by experimental studies and 2D-FEA based analytical examinations using 12/8 poles 3-phase SR servomotor that the torque pulsation strongly depends on parameters used in models of magnetizing curves and torque-rotor position-current characteristic.