scholarly journals Robust Backstepping Speed Controller of a Doubly Fed Induction Motor using State-Space Nonlinear Approach

2020 ◽  
Vol 15 ◽  
Keyword(s):  
State Space ◽  
Induction Motor ◽  
Decoupling Method ◽  
Variation Of Parameters ◽  
Speed Controller ◽  
Nonlinear Approach ◽  
Parameter Variations ◽  
Stator Flux ◽  
Doubly Fed ◽  
Motor Operation

The aim of this paper is an efficiency Backstopping speed controller with direct stator flux orientation of doubly fed induction motor (DFIM) fed by two PWM inverters with separate DC bus link, the Backstopping controller is designed based on the Lyapunov stability theorem, by introducing the approach for decoupling the motor’s currents in a rotating (d-q) frame, based on the state space input-output decoupling method. The purpose is therefore to make the speed and the flux control resist to parameter variations, because the variation of parameters during motor operation degrades the performance of the controllers. The proposed approach is analysed by Simulink/Matlab environment. The simulation results show good performance and robustness.

scholarly journals Variable Gain PI Controller Design For Speed Control of a Doubly Fed Induction Motor Using State-Space Nonlinear Approach

2013 ◽  
Vol 3 (3) ◽  
pp. 433-439 ◽  
Author(s):  
T. Mohammed Chikouche ◽  
A. Mezouar ◽  
T. Terras ◽  
S. Hadjeri
Keyword(s):  
State Space ◽  
Induction Motor ◽  
Controller Design ◽  
Speed Control ◽  
Pi Controller ◽  
Field Orientation ◽  
Decoupling Method ◽  
Variable Gain ◽  
Speed Regulation ◽  
Doubly Fed

This paper presents a comparison between a variable gain PI controller and a conventional PI  controller used for speed  control with an indirect field orientation control of a Doubly Fed Induction Motor (DFIM), fed by two PWM inverters with a separate DC bus link. By introducing a new approach for decoupling the motor’s currents in a rotating (d-q) frame, based on the state space input-output decoupling method, we obtain the same transfer function (1/s) for all four decoupled currents. Thereafter, and in order to improve control performance, the VGPI controller was used for speed regulation. The results obtained in Matlab/Simulink environment illustrate the effectiveness of the technique employed for the decoupling and for speed regulation.

scholarly journals 24 Sectors DTC Control with Fuzzy Hysteresis Comparators for DFIM Fed by the Three-level NPC Inverter

2022 ◽  
Vol 12 ◽  
pp. 141-154
Author(s):  
Abderrahmane Moussaoui ◽  
Habib Benbouhenni ◽  
Djilani Ben Attous
Keyword(s):  
Fuzzy Logic ◽  
Induction Motor ◽  
Fuzzy Logic Controller ◽  
Direct Torque Control ◽  
Control Process ◽  
Torque Control ◽  
Electromagnetic Torque ◽  
External Disturbances ◽  
Parameter Variations ◽  
Doubly Fed

This article presents 24 sectors direct torque control (DTC) with fuzzy hysteresis comparators for the doubly-fed induction motor (DFIM) using a three-level neutral point clamped (NPC) inverter. The designed DTC technique of the DFIM combines the advantages of the DTC strategy and fuzzy logic controller. The reaching conditions, stability, and robustness of the DFIM with the designed DTC technique are guaranteed. The designed DTC technique is insensitive to uncertainties, including parameter variations and external disturbances in the whole control process. Finally, the designed DTC technique with fuzzy hysteresis comparators is used to regulate the electromagnetic torque and the flux of the DFIM fed by the three-level NPC inverter and confirms the validity of the designed DTC technique. Results of simulations containing tests of robustness and tracking tests are presented.

scholarly journals Fuzzy Logic Based Advance Speed Control of Induction Motor

2013 ◽  
Vol 4 (1) ◽  
pp. 124-128
Author(s):  
Debirupa Hore
Keyword(s):  
Fuzzy Logic ◽  
Induction Motor ◽  
Fuzzy Controller ◽  
Speed Control ◽  
Pi Controller ◽  
Variable Speed ◽  
Speed Controller ◽  
Control Scheme ◽  
Stator Flux ◽  
Stator Flux Oriented

The speed control of Induction motor is done using the advance AI Technique methods. In this System the vector control scheme in the stator flux oriented reference frame is used for controlling the variable speed Induction motor. For this the conventional Speed PI controller and Current PI Controllers are tuned and the responses are observed. The Conventional Speed PI Controller is then replaced by the Fuzzy Logic Speed Controller to observe the various responses of the system. The fuzzy Logic Speed Controller is designed and tuned in such a way to obtain better and fast sped responses of the system. Simulation results reveal that the fuzzy-controller improves the performance of variable speed Induction Motor in terms of speed and Power factor

scholarly journals DTC based on SVM for induction motor sensorless drive with fuzzy sliding mode speed controller

2021 ◽  
Vol 11 (1) ◽  
pp. 171
Author(s):  
Sarra Massoum ◽  
Abdelkader Meroufel ◽  
Ahmed Massoum ◽  
Wira Patrice
Keyword(s):  
Steady State ◽  
Induction Motor ◽  
Sliding Mode ◽  
Direct Torque Control ◽  
Torque Control ◽  
Ac Drives ◽  
Speed Controller ◽  
Fuzzy Sliding Mode ◽  
Stator Flux ◽  
Vector Modulation

By using the direct torque control (DTC), robust response in ac drives can be produced. Ripples of currents, torque and flux are oberved in steady state. space vector modulation (SVM) applied in DTC and used for a sensorless induction motor (IM) with fuzzy sliding mode speed controller (FSMSC) is studied in this paper. This control can minimize the torque, flux, current and speed pulsations in steady state. To estimate the rotor speed and stator flux the model reference adaptive system (MRAS) is used that is designed from identified voltages and currents. The FSMSC is used to enhance the efficiency and the robustness of the presented system. The DTC transient advantage are maintained, while better quality steady-state performance is produced in sensorless implementation for a wide speed range. The drive system performances have been checked by using Matlab Simultaion, and successful results have been obtained. It is deduced that the proposed control system produces better results than the classical DTC.

scholarly journals 24 sectors DTC control with fuzzy hysteresis comparators for DFIM fed by 3 level inverter

2021 ◽  
Author(s):  
Mustefa Jibril
Keyword(s):  
Fuzzy Logic ◽  
Induction Motor ◽  
Fuzzy Logic Controller ◽  
Direct Torque Control ◽  
Control Process ◽  
Torque Control ◽  
Electromagnetic Torque ◽  
External Disturbances ◽  
Parameter Variations ◽  
Doubly Fed

This article presents 24 sectors direct torque control (DTC) with fuzzy hysteresis comparators for the doubly-fed induction motor (DFIM) using a three-level neutral point clamped (NPC) inverter. The designed DTC technique of the DFIM combines the advantages of the DTC strategy and fuzzy logic controller. The reaching conditions, stability, and robustness of the DFIM with the designed DTC technique are guaranteed. The designed DTC technique is insensitive to uncertainties, including parameter variations and external disturbances in the whole control process. Finally, the designed DTC technique with fuzzy hysteresis comparators is used to regulate the electromagnetic torque and the flux of the DFIM fed by the three-level NPC inverter and confirms the validity of the designed DTC technique. Results of simulations containing tests of robustness and tracking tests are presented.

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