JEE_V5_N2_RP9 A. Sudhakar M. Vijaya Kumar Journal on Electrical Engineering 2230 – 7176 5 2 55 59 Direct Torque Control(DTC), Space Vector Modulation(SVM), Permanent Magnet Synchronous Motor(PMSM) An improved DTC scheme based on space vector modulation (SVM) for Permanent Magnet Synchronous Machine(PMSM) drives. The new scheme provides a alternative option for the improvement of DTC controlled PMSM in reducing the torque ripple. Closed-loop control of both torque and flux is developed with proportional Integral controllers. The stator voltage vector is generated through Space Vector Modulation unit. The torque and flux ripples are greatly reduced with space vector modulation technique comparing with classical switching-table based DTC scheme. The analysis of the control principle provides a guide to design the controller parameters. Modeling results present the features effectiveness of the proposed scheme. December 2011 Copyright © 2011 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=1588