Torque Controller Design for Switched Reluctance Motor Based on Torque Ripple Reduction

摘要

This thesis aims to reduce torque ripple on the operation of a switched reluctance motor (SRM) At first the cause of torque ripple is introduced Following that a series of torque ripple reduction methods are surveyed including motor physical design torque sharing function (TSF) direct torque control (DTC) and direct instantaneous torque control (DITC) Based on the direct torque control this thesis proposes a refined direct torque control (refined DTC) which not only enhances torque ripple reduction ability but also decreases the excitation of single phase negative torque which could improve the motor drive efficiency Using the refined DTC this thesis addresses further improvement of the torque ripple reduction by constant frequency modulation maximum duty ratio tuning on the constant frequency modulator and the commutation angle tuning In the end a 3kW SRM and an asymmetric half bridge converter are tested to validate the effectiveness of the proposed driving methodology

獎項日期	2017 8月 23
原文	English
監督員	Le-Ren Chang-Chien (Supervisor)