Fuzzy logic Controller based Asymmetrical SRM Converter for Reduction of Torque Ripple

Abstract

The generated torque ripple in switched reluctance motors (SRM) can be considered as one of the major disadvantages of the motor. It is mainly due to frequent switching of phases for rotation of the motor and changes of the air gap length between the rotor and stator teeth. It decreases the average developed torque, diminish the efficiency, causes noise and vibration in the motor. So, in order to improve the performance of SRM and extend its applications in industry, it is essential to reduce these torque ripple. So far, many torque ripple reduction methods have been introduced. These have been done through changing and improving the structure and geometry of the motor or using some control strategies. This paper reviews a variety of control strategies to reduce the torque ripple in SRM. Each of the methods described in details. Different techniques are compared and the best and most efficient one is introduced.

In present work   detailed analysis, and modeling of six differenttype of converters used in with three phase switchedreluctance motor (SRM). These converters areAsymmetric, Bifilar, Auxiliary, High Demagnetizationdump, C-dump type. These controllers were: a conventional PI controller. From simulation results, the effective reduction of thetorque ripple was confirmed and the performance of the fuzzy logic controller was compared.The simulation results are presented by using Matlab/Simulink platform.