Design and Simulation of a new Switched Reluctance Motor with changes in the shape of stator and rotor in order to reduce torque ripple and comparison with the conventional motor

Abstract

Switched Reluctance Motor torque ripple is an inherent problem that must be reduced. Several methods to reduce torque ripple in Switched Reluctance Motor (SRM) are presented. Some of them are changing the structure and geometry of the motor. Another method is the use of control techniques. In this paper, a three-phase 6/4 switched reluctance motor as a typical structure designed through SRM design formulated methods is introduced. Other models of SRM by the changes in the dimensions and geometry of the rotor and stator compared to the normal model are designed. All models are designed using MagNet and AutoCAD software and Motor Solve software is used for analysis and simulation. Then, torque, generated torque ripple, current lines and other simulated machine outputs versus different rotor situations are derived in Motor Solve software which works based on finite element method (FEM). After that, the effect of changes in the dimensions and geometry of SRM on torque and torque ripple is studied, examined and taken into consideration and according to the conducted analysis, optimal structure that has the highest torque and lowest ripple is proposed.