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Fuzzy and PI based matrix converter fed by induction motor

P. Saranya, C. Gnanavel

This paper proposes a three phase multipulse ac – ac converter with PI and FUZZY controller. The matrix converter system is competitive solution to replace the conventional two stage ac to ac converter. In this paper, a matrix converter driving a speedcontrolled induction machine is examined under openswitch fault. First, PI controller is proposed using only the motor torque and current. Second, FUZZY controller is proposed to control the motor speed. The proposed techniques do not require the additional hardware devices or circuit modifications to the matrix converter. The results of this paper show that the proposing method can maintain the motor speed with a minimum ripple content—a fivefold improvement over the uncompensated system.