WSEAS Transactions on Systems and Control
Print ISSN: 1991-8763, E-ISSN: 2224-2856
Volume 15, 2020
Induction Motor Performance Improvement Using Twelve Sectors DTC and Fuzzy Logic Speed Regulation
Authors: , ,
Abstract: The direct torque control (DTC) was proposed as an alternative to the vector control in the middle of 1980s. This strategy is based on the direct determination of inverter switching states and offers a simpler scheme and less sensitivity to machine parameters. However, the variable switching frequency of DTC causes high flux and torque ripples which lead to an acoustical noise and degrade the performance of the control scheme, especially at low-speed regions. In the objective of improving the performance of DTC for the induction motor, a fuzzy logic based non-linear speed controller is inserted to ensure a robust control against different uncertainties and external disturbances. Moreover, the sensorless control can increase the reliability and decrease the cost of the control system. Therefore, a fuzzy adaptive Luenberger observer is used to improve the speed and the flux estimation.
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Keywords: Twelve sectors DTC, Fuzzy logic controller, Adaptive Luenberger observer, Fuzzy adaptation mechanism
Pages: 47-56
DOI: 10.37394/23203.2020.15.6