Design of SRM drive for torque ripple minimization based on the best structure obtained by GA and FEM

In this paper torque ripple in switched reluctance motor is studied. The presented method in this paper for minimization of torque ripple is based on suitable machine structure obtained from the genetic algorithm (GA) and suitable machine driver. In the presented paper، the parameters of one machine are chosen as the reference machine parameters. Then some parameters of machine are chosen، which have no effects on the characteristics of mechanical، power and volume of reference machine. The desirable machine is simulated by finite element software، and then the torque characteristics are obtained for different machine structure with various machine parameters. Finally، with GA the best parameters for the design of machine with minimum torque ripple are chosen. So this paper presented for the first time an accurate method by finite element method in the process of machine design by GA. The finite element method used in the previously studies in the design of machine only for machine analysis، but in this paper finite element method is used in the process of machine design. So this method of machine design can be replaced to a conventional method. In this paper، the design of SRM driver is presented based on the best machine structure which is chosen from GA. So، the profile of machine torque for this structure has minimum deviation from the ideal torque without the ripple.