Direct instantaneous torque control for switched reluctance machines considering mutual coupling

Abstract

Torque ripple reduction is the main goal of direct instantaneous torque control (DITC). However, the quality of the switched reluctance machine control is only as good as its machine model. Depending on the saturation characteristics and the number of machine phases, as well as the coil orientation of the individual phases, different mutual coupling effects between the phases occur. This study discusses the influence mutual coupling has and how the coupling effects can be incorporated into the DITC machine model. Thus, effectively reducing the influence the coil arrangement has on the resulting output torque. Furthermore, the amount of harmonic content in the torque ripple is reduced considerably.