Reduced ripple in the torque output of the SRM drive by the use of the SVM-based converter

Abstract

An early example of an electric machine, the switched reluctance motor (SRM) has been around for quite some time. Its low production cost, durability, and streamlined design make it ideal for use in industrial settings. These benefits, however, are offset by the high torque ripple, noise, and difficulty in controlling it that are intrinsic to the design. Based on the idea of a torque-sharing function (TSF), this work describes a method for minimizing torque-ripple in switching reluctance motor (SRM) drives. By employing an analytical formula, the reference torque is converted into a reference current waveform in the suggested approach. One of the biggest drawbacks of the Switched Reluctance Motor is the torque ripple it produces. In this study, we first examine torque ripple from the perspective of the fundamental space voltage vector, which is grounded in direct torque control theory. The investigation led to the proposal of a novel technique using an improved voltage vector to cut down on torque ripple. In order to power SRMs, a space vector modulation is introduced here. Three legs of an asymmetrical three-phase power converter, each with two IGBTs and two free-wheeling diodes, provide power to the SRM.