Direct Torque Control of Asynchronous Motor With Fuzzy Logic Swithching

15743

One of the important problems of direct torque control method that proposed as alternative to field direction vector control method in asynchronous motors, are known as high speed and torque ripples. In this study, direct torque control with fuzzy logic based switching method have been studied in order to reduce the speed and torque ripples which occurs during the direct torque control of asynchronous motors. Hysteresis controllers and vector selector that used in conventional control were removed, and fuzzy logic based switching method was used instead of them. Conventional and fuzzy control methods were simulated with Matlab/ Simulink software and simulation results were compared. Speed and torque ripples that occurs from flux vector zone variations in conventional method reduction have been observed with the worked method during unloaded and loaded work of asynchronous motor.

281

Direct Torque Control , Vector Control , Fuzzy Logic

Journal Of Polytechnic

287

Journal Of Polytechnic