Torque Ripple Minimization Control of SRM Based on Novel Motor Model Considering Mutual Coupling Effect

In order to minimize torque ripple in switched reluctance motor (SRM), many kinds of methods have been proposed. One of them is current profile tracking control based on a motor model, torque-position-current model, which can be derived from magnetizing curves. However, the current profile tracking control has a problem which is an increase in torque ripple at the current overlapping region under high load condition. In this paper, through magnetic analyses using 2D-FEA and mathematical analyses regarding 4-phase 8/6 SRM, the reason of the increase in torque ripple is revealed and a novel torque- position-current model taking mutual coupling effect into account is proposed for better torque ripple minimization control.