Authors
Fatih Korkmaz1, M. Faruk Cakır1, Yılmaz Korkmaz2, smail Topaloglu1, 1Cankırı Karatekin University, Turkey and 2Gazi University, Turkey
Abstract
The Direct Torque Control (DTC) is well known as an effective control technique for high performance drives in a wide variety of industrial applications and conventional DTC technique uses two constant reference value: torque and stator flux. In this paper, fuzzy logic based stator flux optimization technique for DTC drives that has been proposed. The proposed fuzzy logic based stator flux optimizer self-regulates the stator flux reference using induction motor load situation without need of any motor parameters. Simulation studies have been carried out with Matlab/Simulink to compare the proposed system behaviors at vary load conditions. Simulation results show that the performance of the proposed DTC technique has been improved and especially at low-load conditions torque ripple are greatly reduced with respect to the conventional DTC.
Keywords
Asynchronous motor control, Direct torque control, Fuzzy logic optimization, Vector control