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Using fuzzy logic algorithm for improvement of DTC three level inverter performance considering saturated model of induction motor

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2 Author(s)
Hassan, M.M. ; Electr. Power & Machine Dept., Cairo Univ., Cairo, Egypt ; Ismail, M.M.

The problem of controlling the π-model induction motor with magnetic saturation is considered in this proposed research. Direct Torque Control (DTC) of induction motor has been developed since three decades. Furthermore many techniques have been proposed to improve the performance of the induction machines that using the DTC drives in industry. However, all the previous models are based on the linear model of the machine for approximation. This is not the exact model and there is no guarantee that the process will work outside the saturation region of the flux, especially in large rating of induction machines. In this paper, multiple fuzzy logic controllers are used as a solution for improvement in the performance of the saturated model DTC controller. This is done via minimizing the speed error of the PI controller and by minimizing the torque ripples of the three level inverter.

Published in:

Diagnostics for Electric Machines, Power Electronics & Drives (SDEMPED), 2011 IEEE International Symposium on

Date of Conference:

5-8 Sept. 2011