A new performance estimation method for a switched reluctance motor without the design process of the torque controller

This paper presents a general procedure to estimate the torque-speed performance of a switched reluctance motor (SRM) from the flux linkage versus current data which are generally available in the design stage of a SRM. The complicated design procedure of the torque controller is avoided for the estimation by finding the optimal phase current waveforms directly. In order to do this, the current waveform is parametrized so that it can represent all kinds of possible waveforms by using a series of B-spline basis functions. The optimal determination of the current waveform is described for various torque ripple conditions.