Fast response adaptive fuzzy logic controller for sensorless direct torque control of PMSM with minimum torque ripple

2008 ◽  
Vol 27 (2) ◽  
pp. 534-550 ◽  
Author(s):  
Ali Ahmed Adam ◽  
Kayhan Gulez
Keyword(s):  
Fuzzy Logic ◽  
Fuzzy Logic Controller ◽  
Direct Torque Control ◽  
Fast Response ◽  
Torque Ripple ◽  
Torque Control ◽  
Adaptive Fuzzy ◽  
Adaptive Fuzzy Logic ◽  
Minimum Torque

Fuzzy Logic Application for Intelligent Control of An Asynchronous Machine

2017 ◽  
Vol 7 (1) ◽  
pp. 61
Author(s):  
Zineb Mekrini ◽  
Seddik Bri
Keyword(s):  
Fuzzy Logic ◽  
Fuzzy Logic Controller ◽  
Direct Torque Control ◽  
Torque Ripple ◽  
Torque Control ◽  
Asynchronous Machine ◽  
Torque Response ◽  
Q Model ◽  
High Torque ◽  
Stator Flux

<p>The aim of this article is propose a method to improve the direct torque control and design a Fuzzy Logic based Controller which can take necessary control action to provide the desired torque and flux of an asynchronous machine. It’s widely used in the industrial application areas due to several features such as fast torque response and less dependence on the rotor parameters. The major problem that is usually associated with DTC control is the high torque ripple as it is not directly controlled. The high torque ripple causes vibrations to the motor which may lead to component lose, bearing failure or resonance. The fuzzy logic controller is applied to reduce electromagnetic torque ripple. In this proposed technique, the two hysteresis controllers are replaced by fuzzy logic controllers and a methodology for implementation of a rule based fuzzy logic controller are presented. The simulation by Matlab/Simulink was built which includes induction motor d-q model, inverter model, fuzzy logic switching table and the stator flux and torque estimator. The validity of the proposed method is confirmed by the simulative results of the whole drive system and results are compared with conventional DTC method. </p>

Fuzzy logic-based direct torque control for improvement of the fault-tolerant drive of a five-phase induction motor

2021 ◽  
pp. 014233122110155
Author(s):  
Umakanta Mahanta ◽  
Bhabesh Chandra Mohanta ◽  
Anup Kumar Panda ◽  
Bibhu Prasad Panigrahi
Keyword(s):  
Fuzzy Logic ◽  
Induction Motor ◽  
Fault Tolerant ◽  
Direct Torque Control ◽  
Cost Effective ◽  
Torque Ripple ◽  
Torque Control ◽  
Open Phase ◽  
Ripple Reduction ◽  
Multi Phase

Torque ripple reduction is one of the major challenges in switching table-based direct torque control (DTC) while operating for open phase faults of an induction motor, as the switching vectors are unevenly distributed. This can be minimized by increasing the level of the inverter and with the use of multi-phase motors. Fuzzy logic-based DTC is another solution to the above problem. In this paper, a comparative analysis is done between switching table-based DTC (ST-DTC) and fuzzy logic-based DTC for increasing the performance during open phase faults of a five-phase induction motor. The result shows that in fuzzy logic-based DTC with a two-level inverter, the torque ripple is reduced by 5.164% as compared with ST-DTC with a three-level inverter. The fuzzy logic-based DTC with the three-level inverter also gives better performance as compared with fuzzy logic-based DTC with the two-level inverter. The current ripple also reduced by 9.605% with respect to ST-DTC. Thus, fuzzy logic-based DTC is more suitable and cost effective for open phase fault-tolerant drives.

scholarly journals Torque Ripple Reduction in DTC Induction Motor Drive

2020 ◽  
Author(s):  
Adhavan Balashanmugham ◽  
Maheswaran Mockaisamy ◽  
Sathiyanathan Murugesan
Keyword(s):  
Induction Motor ◽  
Fuzzy Logic Controller ◽  
Pulse Width Modulation ◽  
Control Strategies ◽  
Direct Torque Control ◽  
Torque Ripple ◽  
Torque Control ◽  
Wear And Tear ◽  
Slip Rings ◽  
Artificial Neural Network Ann

The asynchronous or Induction Motor (IM) is one of the most widely used electrical machines in the world, due to the three following advantages namely 1.Their construction is simple and rugged 2.The absence of slip rings, commutators and brushes make it cheaper, and 3.It is also maintenance free compared to DC motors and Synchronous motor due to wear and tear of brushes, slip rings and commutators respectively. The Section 1 deals with the introduction of induction motor and Direct Torque Control scheme. Section 2 briefly discusses the types of Induction motor. Section 3 tells about the control strategies of Induction motor respectively scalar control and vector control, and also briefly explains about Direct Torque Control (DTC) method. The Section 4 discuss about the Types of Control Strategies for Torque ripple Reductions in DTC as well as the two proposed schemes namely 1.Fuzzy Logic Controller (FLC) for DTC-SVM and 2.Artificial Neural Network (ANN) controller for DTC-SVM respectively for IM and its results, The two proposed schemes uses Hybrid Asymmetric Space Vector Pulse Width Modulation (HASVPWM) for switching the inverter. The Section 5 revels about the modern advanced techniques such as ANN and FLC based DTC.

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