Non‐linear deadbeat direct torque and flux control for switched reluctance motor

Abstract

In this study, the non‐linear deadbeat direct torque and flux control (N‐DB‐DTFC) scheme is proposed for switched reluctance motor (SRM) to achieve torque and flux precise control. For torque control part, the Fourier series form of inductance is used to establish the non‐linear torque model of SRM. As for the flux control, stator flux‐oriented is adopted to achieve the flux control and simplified calculation in N‐DB‐DTFC. In addition, the synthetic voltage vectors are applied by pulse‐width modulation. In order to assess the performance of N‐DB‐DTFC, the comparison of torque ripple is analysed among the traditional deadbeat controls in the simulation and experiment. Although, for the torque transient response, three deadbeat controls show the strong robustness and adaptability. In the results, the proposed N‐DB‐DTFC strategy shows better reflection in terms of lower torque ripple. Moreover, the results of simulation and experiment are based on a three‐phase 12/8‐poles SRM.