Torque Ripple Minimization in Direct Torque Control of Induction Motor using SVPWM Technique
| Author(s) | : | H. B. Jani, S.U.Dalwani, S.J.Patel |
| Institution | : | Electrical Engineering Department,Dr.J.N.M.Government Polytechnic,Amreli |
| Published In | : | Vol. 2, Issue 4 — April 2015 |
| Page No. | : | 128-135 |
| Domain | : | Engineering |
| Type | : | Research Paper |
| ISSN (Online) | : | 2348-4470 |
| ISSN (Print) | : | 2348-6406 |
The conventional DTC (CDTC) drive contains a pair of hysteresis comparators, a flux and torque estimator and a voltagevector selection table. The movement of stator flux vector during the changes of cyclic sectors is responsible for creating notable edgeoscillations of electromagnetic torque. Another great issue is the implementation of hysteresis controllers which requires a highsampling frequency.This paper is aimed to analyze DTC principles, the strategies and the problems related to its implementation and the possibleimprovements using Space Vector Pulse Width Modulation (SVPWM). In SVPWM for each sampling period the switching instants ofdifferent space vectors are determined to reduce torque ripple. A comparison study between SVPWM-DTC and CDTC is carried out toapply switching select voltage vector. The theoretical foundation principle, the numerical simulation procedure and the performancesof both methods are also presented.
H. B. Jani, S.U.Dalwani, S.J.Patel, “Torque Ripple Minimization in Direct Torque Control of Induction Motor using SVPWM Technique”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 2, Issue 4, pp. 128-135, April 2015.
