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Journal of Applied Sciences
Year: 2010  |  Volume: 10  |  Issue: 19  |  Page No.: 2269 - 2275

Loss-minimization Scheme in Modified DTC-SVM for Induction Motors with Torque Ripple Mitigation

M.H. Ershadi, M. Moallem and M. Ebrahimi    

Abstract: Direct Torque Control (DTC) is known to produce quick and robust torque response for AC drives. However, during steady state, notable torque, flux and current pulsations occur which will be reflected in speed response, speed estimation error and also in increased acoustic noise. This study presented a modified direct torque and flux control based on Space Vector Modulation (SVM) for induction motor drives. This method based on control of stator flux components. A new strategy is proposed to minimize the torque ripple of induction motor in which, the stator flux level is selected in accordance with the efficiency optimized motor performance. Simulation results show consistency and the good performance of the proposed control strategy.

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