Paper Details: Downloads: 501
Serial Number: P1110948922
Title: SENSORLESS DIRECT TORQUE CONTROL OF INDUCTION MOTOR USING FUZZY CONTROLLER
Authors: Y.S.Kishore Babu and G.Tulasi Ram Das
Abstract: This paper shows the application of fuzzy logic based duty ratio control technique to reduce torque ripple in an induction motor employing Direct Torque Control (DTC). This technique increases the number of voltage vectors beyond the available eight discrete voltage vectors without any increase in the number of semiconductor switches in the inverter. In addition, this work incorporates Model Reference Adaptive System based observer to estimate rotor speed. Look-up table based on-line tuning PI controller is proposed for outer speed control loop to achieve swift response, less overshooting and precision speed control to have wide torque-speed characteristics. A new algorithm for optimized value of stator flux based on the maximum reference value of electromagnetic torque is proposed to operate in conjunction with duty ratio control. The performance of the proposed drive system is evaluated through digital simulation using MATLAB-SIMULINK package. The simulation results clearly depict the superiority of devised method over the existing methods of DTC.
Keywords: Direct Torque Control, Fuzzy Logic Duty Ratio Control, Induction Motor, Model Reference Adaptive System.
Journal/Conference: International Journal of Automatic Control and System Engineering
Volume: 10
Issue: 1
Submission Date: 11/27/2009 12:00:00 AM
Review Date: 5/7/2010 12:00:00 AM
Publishing Date: 5/22/2010 12:00:00 AM
Article Downloads: 501
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