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36 Sectors DTC Based on Fuzzy Logic of Sensorless Induction Motor Drives

Abstract

This paper presents an improved five-level direct torque control (DTC) with 36 sectors of induction motor (IM) based on fuzzy logic. This intelligent technique was used to replace, on the one hand the hysteresis comparators in order to reduce THD (Total Harmonic Distortion) of stator current, torque ripple and stator flux ripple, on other hand and the classic integral proportional (PI) in order to increase the response time period of the system, to optimize the performances of the closed loop control, and to adjust the parameters of the regulator to changes in the reference level. The validity of the proposed methods is confirmed by the simulation results.

Habib Benbouhenni

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