Abstract
Direct Torque Control (DTC) is one of the most excellent strategies of torque control of an induction machine. They aim to provide a decoupled control of torque and flux. The main drawback associated with the conventional DTC was the high torque and flux ripples and also variable switching frequency of the devices. This drawback was rectified with the usage of space vector modulation(SVM) technique. Here, it is intended to make an analysis study of two such direct torque control schemes for induction motor drive which incorporates the space vector modulation technique a) Modified Direct Torque Control scheme-1 (MDTC-1) comprising of the PI controllers and the SVM technique and b) Modified DTC scheme-2 (MDTC-2) comprising of comprising of the sliding mode controllers and the SVM technique. Finally the effectiveness and validity of MDTC -1 and MDTC-2 schemes for the induction motor drives has been analysed, studied and confirmed by simulation using MATLAB <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">®</sup> /SIMULINK <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">®</sup> .
Published Version
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