Direct Torque Control of Six Phase Induction Motor Supplied With SVPWM Inverter Using Fuzzy Logic Control

Abstract

In this thesis direct torque control for six-phase IM supplied with svpwm inverter using fuzzy logic control is modeled. Mathematical models of the six-phase induction motor and the six phase voltage source inverter have been briefly explained. A space vector modulation technique that is used to control a six-phase voltage source inverter had been defined. Six phase IM drive own several benefits when compared to conventional three-phase IM, in case of the additional degrees of freedom. Some of these advantages include reduction in harmonic currents, lower torque pulsation, and reduced stator current per phase without the need to increase the phase voltage, greater reliability, fault tolerant feature and increased power. The performance of direct torque control of six-phase IM simulation is done for both fuzzy and PI controllers using a matlab/simulik. With fuzzy logic controller harmonic oscillation are less at Transient state and Fuzzy logic controller perform good. Moreover, hardware implementation of this research work, extending this control technique to other types of multiphase motors, and using other soft computing techniques and/or in combination with conventional controllers to enhance the torque performance is recommended as a future work.