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Improved direct torque control for induction machine drives using fuzzy logic and particle swarm optimization

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3 Author(s)
Rezaei, M.M. ; Center of Excellence in Power Syst., Amirkabir Univ. of Technol. (Tehran Polytech.), Tehran ; Mirsalim, M. ; Malekian, K.

Here, a new fuzzy direct torque control algorithm for induction motors is proposed. As in the classical direct torque control, the inverter gate control signals directly come from the optimum switching voltage vector look-up table, the best voltage space vector selection is a key factor to obtain minimum torque and flux ripples. In the proposed approach the best voltage space vector is selected using a new fuzzy method. A simulation model is built up and the torque and flux ripples of basic direct torque control and the proposed method are compared. The simulation results show that the torque and flux ripples are significantly decreased and in addition, the switching frequency can be fixed.

Published in:

Power Electronics and Motion Control Conference, 2008. EPE-PEMC 2008. 13th

Date of Conference:

1-3 Sept. 2008