LOUTFI Benyettou

SAGGAI Abdelmoula

command,es tolérantes aux dêfauts d.'un véhicule aêrien autonome

AIB Abdelghani

Implémentation des techniques d’intelligence artificielles sur FPGA en vue de contrôle des systèmes d’entraiment électrique

KHEZZARI Khiereddine

Diagnostic de défaillances d’un convertisseur à base du réseau de neurones

NADJI DJAMEL , CHIKH NADIR

Etude des Filtres pour Amélioration de la Qualité de l'Energie Electrique

NOUAR KHERKHACHI Aziza , TAYEBBEY Mounir

Surveillance et diagnostic des défauts du convertisseur "Application à machine asynchrone

KADDOURI Ibrahim , SERAH Youcef

Détection des défauts d’une machine tournantes par l’analyse FFT

ZOUAK Abd essamed , DECHOUCHA Kheirddinne

COMMANDE PAR LOGIQUE FLOUE D’UN FILTRE ACTIF PARALLELE

DEMBRI Hadjira

Performance de méthode de diagnostic des défauts de circuit ouvert d’un filtre actif parallèle

DEHOUM FAWZI

Commande d’un système éolien basé sur une GADA Par différentes techniques

YETTOU miloud

Commande d’un Filtre Actif Parallèle À trois niveaux (NPC) Par différentes stratégies de commande

BEY salim

Analyse des variables de diagnostic des défauts d'un convertisseur DC-AC

The present study outlines the development of an Adaptive Backstepping Radial Basis Function Neural Networks Fault Tolerant Control (ABRBFNNFTC) methodology. The aforementioned methodology is employed to address the challenge of achieving trajectory following in the context of a Mobile Manipulator Unmanned Aerial Vehicle (MMUAV) when subjected to the effects of actuator faults and parametric uncertainties. The utilization of an adaptive radial basis function neural networks (RBFNNs) controller is employed for the purpose of approximating an unidentified nonlinear backstepping controller that relies on the precise model of the MMUAV. The Lyapunov direct method is utilized to establish the stability analysis of the entire system. The closed-loop system guarantees the Uniformly Ultimately Bounded (UUB) stability of all signals. The control methodology put forth ensures the achievement of a prescribed trajectory, and mitigates the impact of uncertainties and actuator faults. The efficiency of the proposed ABRBFNNFTC scheme is demonstrated through the presentation of extensive simulation studies.

Citation

LOUTFI Benyettou , , (2023-12-10), Robust adaptive backstepping neural networks fault tolerant control for mobile manipulator UAV with multiple uncertainties, Mathematics and Computers in Simulation, Vol:218, Issue:37, pages:556-585, Elsevier

Response surface methodology and Artificial neural network comparison in making a prediction model for the flashover voltage of the 1512L insulator

Citation

LOUTFI Benyettou , ,(2023-12-02), Response surface methodology and Artificial neural network comparison in making a prediction model for the flashover voltage of the 1512L insulator,NCPA2023,https://www.ens-bousaada.dz/ar/wp-content/uploads/2023/11/1%D9%85%D9%84%D8%AA%D9%82%D9%89-%D9%88%D8%B7%D9%86%D9%8A_merged.pdf

Insulators are important components in electrical transmission lines since they prevent the discharge between the towersand the ground. In this paper, a numerical simulation was carried out to study the performance enhancement of a1512L insulatorstrings. The software "COMSOL Multiphysics" has been used to present the local characteristics in different applied voltage and conductivities pollution. This work demonstrates how to use the Electrostatic interface to calculate the surface electric field of a typical high-voltage insulator. This study encompasses the modeling and simulation of 3D insulator and the behavior of the potential andelectric field along its length under AC voltage. This helps to identify the problems that may occur along its surface. Use of thisknowledge will assist a better understanding and the design of insulators (cap and pin) installations of the electrical networks

Citation

LOUTFI Benyettou , ,(2023-12-02), Electric field distribution of contaminated cap and pin insulators, a numerical simulation approach,THE 1ST NATIONAL CONFERENCE ON PHYSICS AND IT’S APPLICATIONS,https://www.ens-bousaada.dz/ar/wp-content/uploads/2023/11/1%D9%85%D9%84%D8%AA%D9%82%D9%89-%D9%88%D8%B7%D9%86%D9%8A_merged.pdf

Diagnosis of Static DC-AC Converters Application to the parallel active filter

Citation

LOUTFI Benyettou , ,(2023-06-10), Diagnosis of Static DC-AC Converters Application to the parallel active filter,hybrid Conference on Nonlinear Science and Complexity,https://ntmsci.com/Conferences/ICNSC2023

Performances of Robust Sliding Mode with Type-2 Fuzzy Logic Controller for Dual Star Induction Motor

Citation

LOUTFI Benyettou , ,(2023-06-10), Performances of Robust Sliding Mode with Type-2 Fuzzy Logic Controller for Dual Star Induction Motor,hybrid Conference on Nonlinear Science and Complexity,https://ntmsci.com/Conferences/ICNSC2023

The knowledge of the behavior of both the electric potential and electric field is one of the main factors needed when designing an insulator. Using AutoCAD software a 2D cap and pin 1512L insulator model was created in the clean state and under pollution from one to five insulators separately making a chain of insulators for a total of 10 models. Later they are imported to COMSOL Multiphysics 5.6 software, simulations of the 1512L insulator were made to see the effect the pollution has and the differences that occur on the distribution with the addition of more insulators in the chain. The potential distribution starts to develop a pattern after a certain number of insulators in the chain while the pollution induces high value spikes in the field distribution. Finite-element-analysis for numerical simulation of the pollution effect in outdoor insulators: a review and a novel method.

Citation

LOUTFI Benyettou , , (2023), FINITE ELEMENT MODELING FOR ELECTRIC FIELD AND VOLTAGE DISTRIBUTION ALONG THE CAP AND PIN INSULATORS UNDER POLLUTION, DIAGNOSTYKA, Vol:24, Issue:2, pages:1-9, Polish Society of Technical Diagnostics

In this article, an adaptive fuzzy control (AFC) is synthesized to stabilize the twin rotor multi-input multi-output system (TRMS), to impose then its beam to follow accurately a desired signal or to reach reference positions in 2 DOF. The stability system in the closed-loop has been proved using Lyapunov method, in which all adaptive laws have been generated in order to improve the robustness versus wind gusts, external disturbances, and uncertainties. In addition, the developed control method does not require to decouple the TRMS into main and tail subsystems. Experimental implementation shows the capability of the developed control algorithm

Citation

LOUTFI Benyettou , , (2022), Twin Rotor MIMO System Experimental Validation of Robust Adaptive Fuzzy Control Against Wind Effects, IEEE SYSTEMS JOURNAL, Vol:16, Issue:1, pages:409-419, IEEE

In this paper, the response surface methodology (RSM) is used to predict the flashover voltage of a cap and pin 1512L insulator used by SONELGAZ Algerian Power Company (SPE). The pollution and conductivity are studied using a two-level central composite design. MINITAB 19 software is used to perform the regression analysis and analysis of variance (ANOVA) of the data, from which the full quadratic model is developed. The results show that both the pollution and conductivity have a significant effect on the response. The model validation shows the good agreement between the experiment’s obtained results and the predicted results. Therefore, the model could be used to predict the flashover voltage.

Citation

LOUTFI Benyettou , , (2022), Development of a Flashover Voltage Prediction Model with the Pollution and Conductivity as Factors Using the Response Surface Methodology, Energies, Vol:15, Issue:19, pages:7161, Energies

This paper proposes design of a novel scheme control based on sliding mode control via fuzzy logic synthesized by backstepping (FBSMC), to regulate the speed of a dual star induction machine (DSIM), to make guaranteeing the stability and the robustness performance machine system. For this purpose, an appropriate combination of the Backstepping sliding mode controller (BSMC) Improved by fuzzy logic is adopted. This control strategy based on the hybrid controllers are used to guaranteeing the machine stable, preferment and robust to obtain a better dynamic response and anti-disturbance performance. We present and discuss the results of the simulations obtained with MatLab/Simulink.

Citation

LOUTFI Benyettou , ,(2022), Design of Hybrid Sliding Mode Control via Fuzzy Logic Synthesized by Backstepping Approach for Double Star Induction Motor,Online International Symposium on Applied Mathematics and Engineering (ISAME22) January 21-23, 2022 Istanbul-Turkey,Istanbul-Turkey

Electric potential and field distributions simulation on a barrier separating two electrodes under different constraints

Citation

LOUTFI Benyettou , ,(2022), Electric potential and field distributions simulation on a barrier separating two electrodes under different constraints,The 2022 International Conference of Advanced Technology in Electronic and Electrical Engineering (ICATEEE),https://www.univ-msila.dz/icateee2022/?page_id=183

3D Simulation of the Electric Field of Cap and Pin Insulator using COMSOL Multiphysics

Citation

LOUTFI Benyettou , ,(2022), 3D Simulation of the Electric Field of Cap and Pin Insulator using COMSOL Multiphysics,The 2022 International Conference of Advanced Technology in Electronic and Electrical Engineering (ICATEEE),https://www.univ-msila.dz/icateee2022/?page_id=183

This work presents a reliable fault-tolerant tracking control system (FTTCS) for actuator faults in a octorotor unmanned aerial vehicle. The proposed FTTCS is designed based on adaptive fuzzy global fast dynamic terminal sliding mode control (AFGFDTSMC) that guarantees the global asymptotic stability of a octorotor system. To mitigate the negative impacts of model uncertainties and enhance system robustness in faulty operation, an adaptive fuzzy system is incorporated into the global fast dynamic terminal sliding mode control (GFDTSMC) scheme for adaptively identifying the model uncertainties online and compensate the actuator faults effect. Lyapunov stability analysis proofs that the developed control method design maintains the stability in the closed loop dynamics of octorotor UAV in faulty operation. Simulation results show that the proposed (FTTCS) enables the octorotor to track the desired reference commands in the presence of actuator faults with satisfactory performance.

Citation

LOUTFI Benyettou , , (2021), Fault Tolerant Control Based on Adaptive Fuzzy Global Fast Dynamic Terminal Sliding Mode for Actuators Failures in an Octorotor UAV, International Journal of Intelligent Engineering and Systems, Vol:3, Issue:1, pages:190, ijies

In this study, an adaptive fuzzy type-2 backstepping controller (AFT2BC) has been proposed for an industrial PUMA560 manipulator robot with a variable load and actuator faults. The method realizes an accurate tracking of the trajectory at the end effectors of the manipulator and improves its robustness toward model uncertainty (payload variation) and actuator faults when controlling the position of the robot. By using the advantages of the backstepping control, the convergence speed of the control algorithm has been improved, and its steady-state error has been reduced. Also, integration of the continuous approximation law has been used to eliminate the real-time chattering during the control process without affecting the robustness of the system. A type-2 fuzzy adaptive control law has been designed in order to guaranty faults and uncertainties compensation, small tracking error, and fast transient response, where the prior knowledge of uncertainties and external disturbances is not required, without disappearing the tracking precision and robustness property. Finally, the stability of the controller has been proved by the Lyapunov theory, and comparative simulations in faulty operation are conducted to show the superiority of the developed control strategy

Citation

LOUTFI Benyettou , , (2021), Fault Tolerant Control of Robot Manipulators Based on Adaptive Fuzzy Type-2 Backstepping in Attendance of Payload Variation, International Journal of Intelligent Engineering and Systems, Vol:14, Issue:4, pages:312, ijies

This article provides a hardware implementation of torque and flux estimators for direct torque control (DTC) of an induction motor (IM) on the Field Programmable Gate Array (FPGA). Due to its high processing frequency, the FPGA circuit presents an alternative strategy for achieving a high performance DTC implementation. This cannot be achieved by Digital Signal Processing (DSP) or Microcontroller application. Optimized hardware architecture is also proposed for implementation of a complete estimator with explicit determination of all the quantities such as the flux phase, the flux amplitude and the torque amplitude. This work presents a precise hardware estimator of the torque and the flux, it developed with negligible estimation error (0.0002 [Wb] RMS estimate error for the stator flux and 0.0005 [Nm] RMS estimate error the torque), in addition to that this estimator is implemented on the Virtex-4 FPGA board with minimal resources(less 5% of slices registers, 5% of DSP48Es and around 17% of LUTS). This estimator is developed and synthesized independently of the command and can be reused for any task which requires the estimation of these quantities. After this the estimator was used to complete a DTC control in a hardware co-simulation procedure with the Xilinx system generator and MATLAB/SIMULINK tools on the Xilinx ML402 development kit.

Citation

LOUTFI Benyettou , , (2021), FPGA Hardware in the Loop Validation of Torque and Flux Estimators for Direct Torque Control (DTC) of an Induction Motor (IM), International Journal of Intelligent Engineering and Systems, Vol:14, Issue:5, pages:583, ijies

In this paper, an Adaptive RBFNN global fast dynamic terminal sliding mode control (ARBFNNGFDTSMC) is designed to situate the main and tail angles of a twin rotor MIMO system (TRMS). The control objective is to stabilize the TRMS in a reference position or follow a predefined trajectory. An adaptive RBFNN has been used in order to identified unknown nonlinear dynamics of the TRMS. In addition, another adaptive control expressions has been added to diminish the wind gusts, external disturbance effects, and to compensate the estimation errors of the adaptive RBFNN. Moreover, the stability analysis in closed-loop is assured by using Lyapunov method. The developed controller is applied to the TRMS with cross coupling between tail and main subsystems without decoupling procedure. Experimental results prove the good control tracking performance in presence of wind gusts and external disturbances.

Citation

LOUTFI Benyettou , , (2021), Experimental Validation of Adaptive RBFNN Global Fast Dynamic Terminal Sliding Mode Control for Twin Rotor MIMO System Against Wind Effects, Measurement, Vol:168, Issue:1, pages:108472, Elsevier Ltd.

This work is part of the study and implementation of a fuzzy PWM control structure (fuzzy pulse width modulation) of an induction machine (MAS) on a circuit-based platform reconfigurable FPGA type. We first presented a strategy for the hardware implementation of a fuzzy inference system on a programmable logic circuit of FPGA type, through the hardware description language (VHDL) and Xilinx generator system (XSG). Secondly we proposed Fuzzy-PWM architecture for the improvement of response time of an asynchronous machine (MAS) and finally we validate the proposed hardware co-simulation architecture in real time on the ML402 development kit (based on FPGA Xilinx Virtex-4) and Simulink / Matlab

Citation

LOUTFI Benyettou , , (2021), On-Line FPGA Hardware in the Loop Validation of Based Fuzzy-STPWM Induction Motor Control, Advances in Modelling and Analysis B, Vol:65, Issue:1, pages:17, iieta.org

This article provides a full hardware implementation for direct torque control (DTC) of an asynchronous motor (AM) on the Field Programmable Gate Array (FPGA). Due to its high processing frequency, the FPGA circuit presents an alternative for achieving a high performance DTC implementation. This cannot be achieved by any DSP or microcontroller application. The proposed hardware architecture implements three components of DTC control strategy (the integral proportional speed regulator, the estimation and the switching blocks). This implementation has the advantage of being faster, more efficient and with minimum hardware resources on the target FPGA board. The hardware architecture of the DTC control was designed and simulated in Matlab / Simulink using XSG blocks, then synthesized with the Xilinx ISE 14.2 tool, implemented and validated on the Xilinx Virtex-4 FPGA circuit by Hardware in the Loop process.

Citation

LOUTFI Benyettou , , (2021), FPGA Hardware in the Loop Validation of Asynchronous Machine with Full Direct Torque Control Implementation, Advances in Modelling and Analysis B, Vol:65, Issue:1, pages:09, iieta.org

In this work, an adaptive type-2 fuzzy method associated with sliding mode observer is proposed. this method is utilized to give path following for octorotor aircraft in presence parametric uncertainties and external disturbances (wind gusts). adaptive type-2 fuzzy system is exploited in order to identified an unknown nonlinear function which builds the exact dynamic model of octorotor aircraft. Besides, A sliding mode observer is built to estimate the unmeasured states. The stability analysis is demostrated by using Lyapunov approach. The proposed control method is carried out by numerical simulations, the results demonstrate the effectiveness of the proposed control strategy for the octorotor aircraft.

Citation

LOUTFI Benyettou , , (2020), Fault Tolerant Control Based on Sliding Mode Observer and Adaptive Type-2 Fuzzy back stepping Control of Octorotor Aircraft, International Journal of Advanced Science and Technology, Vol:29, Issue:5, pages:14127, SERSC

In this work, an adaptive type-2 fuzzy method associated with sliding mode observer is proposed. this method is utilized to give path following for octorotor aircraft in presence parametric uncertainties and external disturbances (wind gusts). adaptive type-2 fuzzy system is exploited in order to identified an unknown nonlinear function which builds the exact dynamic model of octorotor aircraft. Besides, A sliding mode observer is built to estimate the unmeasured states. The stability analysis is demostrated by using Lyapunov approach. The proposed control method is carried out by numerical simulations, the results demonstrate the effectiveness of the proposed control strategy for the octorotor aircraft.

Citation

LOUTFI Benyettou , , (2020), Fault Tolerant Control Based on Sliding Mode Observer and Adaptive Type-2 Fuzzy back stepping Control of Octorotor Aircraft, International Journal of Advanced Science and Technology, Vol:29, Issue:5, pages:14127, SERSC

Fault-tolerant control (FTC) has earned increasing interest in the last few years for its reliability. A fault tolerant control system for operating a quadrotor aircraft in the presence of actuator faults and external disturbances is proposed in this paper. Firstly, the dynamic model of the quadrotor and types of actuator faults are presented. Secondly, an interval type-2- fuzzy sliding mode control (IT2FSMC) is proposed to stabilize the quadrotor if actuator faults occur. Compared to conventional sliding mode control (SMC), The results obtained confirm the validity and capabilities of the proposed FTC. Thirdly, by using the Lyapunov theory, asymptotic stability is confirmed. The efficiency of the proposed FTC is clarified by simulation results.

Citation

LOUTFI Benyettou , ,(2020), Fault Tolerant Control against Actuator Faults Based on Interval Type-2 Fuzzy Sliding Mode Controller for a Quadrotor Aircraft,The 2nd International Workshop on Human-Centric Smart Environments for Health and Well-being (IHSH’2020),Boumerdes, Algeria

The work has done in this paper concern a strategy of control based on real time implementation of backstepping sliding mode using the interval type-2 fuzzy logic and their application to the Twin Rotor MIMO System (TRMS), the backstepping sliding mode controller are the problem of the chattering phenomenon, this can damage the actuators and disrupt the operation and performance of the system, so to reduce this problem we combine the fuzzy logic type 2. The proposed techniques were applied to the TRMS, where the real time implementation of type-2 fuzzy backstepping sliding mode controller (T2FBSMC) were proposed for control system in the presence of external distrubances. The interval type-2 fuzzy logic is used to minimize the major problem of sliding mode and employed in the stability analysis. The obtained simulation and experiment results confirm the effectiveness of the proposed method

Citation

LOUTFI Benyettou , , (2019), Real Time Implementation of Type-2 Fuzzy Backstepping Sliding Mode Controller for Twin Rotor MIMO System (TRMS), Traitement du Signal, Vol:36, Issue:1, pages:1-11, IIETA

An open fault detection and analysis method for Multilevel Inverter based on Signal Processing is proposed in this paper. A reconfiguration method is also discussed. The output voltage is used as a diagnostic signal to detect the fault types and locations. In this paper, characteristics of open transistor faults in Multilevel Inverter (cascaded H-bridge seven-level) three-phase PWM-controlled shunt active power filter are determined. Phase currents cannot be trusted as fault indicator, like done in many research works in this field, since their waveforms change slightly in the presence of open transistor fault. The proposed method uses H bridges output voltages to determine the faulty phase, the faulty bridge and more precisely, the open fault transistor. The expected and simulation results are in good agreement with each other, which represents the proposed method can perform satisfactorily to detect the fault types and locations

Citation

LOUTFI Benyettou , , (2019), Faults Detection and Diagnosis of Multilevel Inverter Based on Signal Processing, Traitement du Signal, Vol:36, Issue:1, pages:37-44, IIETA

In this paper, a robust attitude and position control of a novel modified quadrotor unmanned aerial vehicles (UAV) which has higher drive capability as well as greater robustness against actuator faults than conventional quad-rotor UAV has been developed. A robust backstepping controller with adaptive interval type-2 fuzzy logic is proposed to control the attitude and position of the modified quadrotor under actuator faults. Besides globally stabilizing the system amid other disturbances, the insensitivity to the model errors and parametric uncertainties are the asset of the backstepping approach. The adaptive interval type-2 fuzzy logic as fault observer can effectively estimate the lumped faults without the knowledge of their bounds for the modified quadrotor UAV. Additionally, the type-2 fuzzy systems are utilized to approximate the local nonlinearities of each subsystem under actuator faults, next and in order to achieve the expected tracking performance, we used Lyapunov theory stability and convergence analysis to online adjust adaptive laws. As a result, the uniformly ultimate stability of the modified quadrotor system is proved. Finally, the performances of the proposed control method are evaluated by simulation and the results demonstrate the effectiveness of the proposed control strategy for the modified quadrotor in vertical flights in presence of actuator faults.

Citation

LOUTFI Benyettou , , (2019), Fault tolerant control for modified quadrotor via adaptive type-2 fuzzy backstepping subject to actuator faults, ISA Transactions, Vol:95, Issue:12, pages:330–345, elsevier

This paper proposes Interval type-2 Fuzzy sliding mode controller based on Backstepping (IT2FBSMC), to control the speed of a dual star induction machine (DSIM), in order to get a robust performance machine. An appropriate control strategy based on the coupling of three methods (Backstepping, sliding mode and type-2 Fuzzy controller) is used to build a robust controller used to approximate the discontinuous control eliminating the chattering phenomenon and guaranteeing the stability of the machine. Moreover, it forces the rotor angular speed to follow a desired reference signal. The simulation results obtained using Matlab/Simulink behavior are presented and discussed. The obtained results show that the controller can greatly alleviate the chattering e®ect and enhance the robustness of control systems with high accuracy.

Citation

LOUTFI Benyettou , , (2019), Backstepping Sliding Mode Controller Improved with Interval Type-2 Fuzzy Logic Applied to the Dual Star Induction Motor, International Journal of Computational Intelligence and Applications, Vol:18, Issue:2, pages:1950012 (20 pages), World Scienti¯c Publishing Europe Ltd

The main disadvantage of the classical direct torque control is high torque and flux ripples. This is due to hysteresis comparators suffer from a variable switching frequency and a high torque ripple. Besides, a hybrid strategy; Direct Torque Control with Space Vector Modulation (DTC -SVM) is established using Interval Type-2 Fuzzy Logic Controller (IT2FLC) for enhancing control performance parameters to reducing torque and flux ripple. In this work, a IT2FLC is applied to the DTCSVM of Double Stator Induction Machine (DSIM). Simulation results are shown to present the robustness and efficiency of the recommended control strategy

Citation

LOUTFI Benyettou , , (2019), DTC-SVM based on Interval Type-2 Fuzzy Logic Controller of Double Stator Induction Machine fed by Six-Phase Inverter, I.J. Image, Graphics and Signal Processing, Vol:11, Issue:7, pages:48-57, MECS

In power electronics applications, three phase inverter plays very important role. The performance of inverter degrades because many types of faults occur in it. Open circuit transistor fault is one of the possible faults in inverter. To improve reliability and performance of inverter, knowledge of fault mode is extremely important. This paper proposes an open switch faults detection and localization algorithm for Three-Level (NPC) in Shunt Active Power filters. It mainly details converter configuration and examines a simple and reliable optimised fault diagnosis method.

Citation

LOUTFI Benyettou , ,(2019), Fault Detection in Three-Level (NPC) for Shunt Active Power filters,,International Conference on Computational Methods in Applied Sciences (IC2MAS19),Istanbul-Turkey

This present paper deals with open switch faults detection and localization in shunt active three-phase filter based on two level voltage source inverter controlled by PWM controllers. The proposed method is simple and reliable. It needs no more than active filter current sensors and display interface indicating the open faulty power switch. The aim of the work, proposed in this frame, is to define faults indicators, that allow identifying and localizing the fault in two-level inverters used as parallel active power filters for varying non-linear loads. Finally, diagnostic system is designed based on analysis of different fault indicators evolution during each fault.

Citation

LOUTFI Benyettou , ,(2019), Fault Diagnosis System for Two-Level Inverter Three-Phase PWM Controlled Shunt Active Power Filter,International Conference on Computational Methods in Applied Sciences (IC2MAS19,),Istanbul-Turkey

This paper presents shunt active power filter based on fuzzy logic controller is modeled, simulated, and tested. The fundament of Instantaneous Reactive Power Algorithm is used for extracting compensated reference harmonic current. A fuzzy logic controlled shunt Active Power Filter Using Hysteresis Band Current is applied to regulate the DC capacitor voltage of shunt Active Power Filter in order to improve the active filter dynamic, to ensure sinusoidal source currents and to produce a high power quality. The main goal of the proposed active filtering system is to maintain the THD well within IEEE on harmonics levels. Simulation results through MATLAB/Simulink are presented and interpreted. It is demonstrated that the fuzzy logic controller improves the performance of the active power filter.

Citation

LOUTFI Benyettou , , (2019), Comparative Analysis Hysteresis and Fuzzy Logic Hysteresis Controller of Shunt Active Filter, Advances in Modelling and Analysis B, Vol:62, Issue:2, pages:37, iieta.org

An open fault detection and analysis method for Multilevel Inverter based on Signal Processing is proposed in this paper. A reconfiguration method is also discussed. The output voltage is used as a diagnostic signal to detect the fault types and locations. In this paper, characteristics of open transistor faults in Multilevel Inverter (cascaded H-bridge seven-level) three-phase PWM-controlled shunt active power filter are determined. Phase currents cannot be trusted as fault indicator, like done in many research works in this field, since their waveforms change slightly in the presence of open transistor fault. The proposed method uses H bridges output voltages to determine the faulty phase, the faulty bridge and more precisely, the open fault transistor. The expected and simulation results are in good agreement with each other, which represents the proposed method can perform satisfactorily to detect the fault types and locations.

Citation

LOUTFI Benyettou , , (2019), Faults Detection and Diagnosis of Multilevel Inverter Based on Signal Processing, Traitement du Signal, Vol:36, Issue:1, pages:37, iieta.org

In this paper, a robust attitude and position control of a novel modified quadrotor unmanned aerial vehicles (UAV) which has higher drive capability as well as greater robustness against actuator faults than conventional quad-rotor UAV has been developed. A robust backstepping controller with adaptive interval type-2 fuzzy logic is proposed to control the attitude and position of the modified quadrotor under actuator faults. Besides globally stabilizing the system amid other disturbances, the insensitivity to the model errors and parametric uncertainties are the asset of the backstepping approach. The adaptive interval type-2 fuzzy logic as fault observer can effectively estimate the lumped faults without the knowledge of their bounds for the modified quadrotor UAV. Additionally, the type-2 fuzzy systems are utilized to approximate the local nonlinearities of each subsystem under actuator faults, next and in order to achieve the expected tracking performance, we used Lyapunov theory stability and convergence analysis to online adjust adaptive laws. As a result, the uniformly ultimate stability of the modified quadrotor system is proved. Finally, the performances of the proposed control method are evaluated by simulation and the results demonstrate the effectiveness of the proposed control strategy for the modified quadrotor in vertical flights in presence of actuator faults.

Citation

SAMIR Zeghlache , ALI Djerioui , LOUTFI Benyettou , Tarak BENSLIMANE , HEMZA Mekki , ABDERRAHMEN Bouguerra , , (2019), Fault tolerant control for modified quadrotor via adaptive type-2 fuzzy backstepping subject to actuator faults, ISA transactions, Vol:95, Issue:2019, pages:330-345, Elsevier

In this paper, we will study the performance of the three-phase parallel active filter topology based on the cascade bridge voltage inverter for the compensation of harmonics generated by the same non-linear load. In fact two topologies of the parallel active filter will be analyzed, that based on a voltage inverter with five levels of cascade bridge type and the other of the same type but with a seven-level inverter using the sinusoidal pulse width modulation PWM control techniques. We will focus particularly on the interest of the improvement of the waveform of the filter voltage compared to its reference, and consequently of the source currents, by carrying out simulations. Simulation results using PSIM simulator show a reduction in THD according to the standard IEEE-519 standard.

Citation

LOUTFI Benyettou , , (2018), Comparison performance five level and seven-level cascaded H-bridge multilevel inverter of total harmonic distortion (THD), Modelling, Measurement and Control A, Vol:91, Issue:4, pages:157-167, IIETA

The problem of harmonic pollution in distribution electrical networks is becoming more and more worrying with the increasing use of nonlinear loads. This work presents a study and hardware realization of three shunt active filter and the different methods used in their command. The command of three active filter based in two axis: the one harmonic current identification and the other is the control of the current how inject by the active filter in the networks, there are several method to identified harmonic current, instantaneous power and modified instantaneous power, Synchronous reference frame and method based for self tuning filter. In this paper, topologies and control schemes are proposed for three-level three-phase active power filters. The paper presents the principles of operation and design criteria for both the power and control circuits. Finally, a detailed comparison is established with two types of current controllers are considered: hysteresis and PWM for the quality of the energy supplied relative to the imposed standards is validated with computer simulation using MATLAB. The obtained results showed that source current is sinusoidal and in phase with source voltage. The proposed solution has achieved a low total harmonic distortion demonstrating the effectiveness of the presented method

Citation

LOUTFI Benyettou , , (2018), Three-level (NPC) shunt active power filter topology for harmonic reduction using different control strategies, Modelling, Measurement and Control A, Vol:91, Issue:4, pages:175-185, IIETA

In this paper, a three-level (NPC) shunt active power filter based on fuzzy logic controller is modeled, simulated, and tested. The fundament of Instantaneous Reactive Power Algorithm is used for extracting compensated reference harmonic current. A fuzzy logic controlled shunt Active Power Filter Using Hysteresis Band Current is applied to regulate the DC capacitor voltage of shunt Active Power Filter in order to improve the active filter dynamic, to ensure sinusoidal source currents and to produce a high power quality. The main goal of the proposed active filtering system is to maintain the THD well within IEEE on harmonics levels. Simulation results through MATLAB/Simulink are presented and interpreted. It is demonstrated that the fuzzy logic controller improves the performance of the active power filter

Citation

LOUTFI Benyettou , , (2018), Shunt active filter using fuzzy logic based on three-level (NPC) inverter to compensate current harmonics, Advances in Modelling and Analysis B, Vol:61, Issue:4, pages:198-206, IIETA

In this article, we discuss the problem of degradation of current in electrical installations, which follows directly from the proliferation of non-linear loads, to solve it, we used a two-level inverter as a parallel active filter, which injects current harmonics at the connection point with two compensation methods the method of instantaneous active and reactive power (pq method and pq method with MVF) method binds to the repository synchronization. We will highlight two control strategies by hysteresis and PWM. Simulation results using Blok set Power System (PBS)/Simulink Matlab show reduced THD in accordance with standard IEEE-519

Citation

LOUTFI Benyettou , , (2018), Comparative Study Entered New Approach FMV and Control SFR for Active Compensation of Harmonic Currents in Shunt Active Power Filter, International Journal of Robotics and Automation (IJRA), Vol:7, Issue:2, pages:119-128, IAES

This paper concerns the study of a direct torque control based on fuzzy logic type-2 for the speed regulation of a doubly star Induction Machine fed by voltage source inverter. This command has become one of the high performance control strategies for AC machine to supply a very rapid torque and flux control. The proposed technique consists to change the proportional and integral controllers by type-2 fuzzy logic controller. The performance of the scheme in different operating conditions is studied. Particular interest is given to the robustness of the fuzzy logic based control. Furthermore, the simulation results illustrate the efficiency and robustness of the type-2 fuzzy logic controller

Citation

LOUTFI Benyettou , , (2018), Direct torque control of doubly star induction machine fed by voltage source inverter using type-2 fuzzy logic speed controller, Advances in Modelling and Analysis C, Vol:73, Issue:4, pages:202-207, IIETA

Le diagnostic est défini comme étant l’identification de la cause probable de la (ou des) défaillance(s) d’un système à l’aide d’un raisonnement logique fondé sur un ensemble d’informations provenant d’une inspection (variables indicatrices ou indicateurs de défaut), d’un contrôle ou d’un test. Il consiste à résoudre le problème inverse de la relation de cause à effet (causalité) connaissant principalement l’effet par ses symptômes observables. Le but du travail, proposé dans ce cadre, est la définition d’indicateurs de défaut qui permettent d’identifier le défaut et le localiser dans un convertisseur statique de tension DC-AC (onduleur de tension à 2 et multi-niveaux) intégré dans un filtre actif parallèle pour des charge non-linéaires variables. Finalement, un système de diagnostic est conçu, en se basant sur l’analyse de l’évolution des différents indicateurs de défaut pour chaque défaut.

Citation

LOUTFIBenyettou , ,(2018); Détection et caractérisation des défauts des convertisseurs statiques,,Éditions universitaires européennes

Les processeurs dits DSPs (Digital Signal Processors) sont des processeurs spécifiquement conçus pour le traitement des signaux numériques. La diversité des applications a permis une évolution importante de ces dispositifs depuis leur apparition dans les années 80. L’exemple le plus connu est le DSP à point fixe, le TMS32010, de chez Texas Instruments, leader sur le marché mondial dans ce type de technologies. En fait, il y a deux grandes familles de ce type de processeurs: les DSPs à virgule fixe utilisant une arithmétique entière, et les DSPs à virgule flottante opérant en arithmétique flottante. Ces derniers sont les plus rapides, les plus précis, mais les plus onéreux. Dans ce livre, nous présentons les caractéristiques générales que l’on retrouve dans la plupart des DSPs, l’architecture dite «conventionnelle» se trouvant dans les DSPs de première génération, et dans une grande majorité des processeurs d’aujourd’hui, l’historique général dressant le parcours de l’évolution de ces différentes architectures et arrivant jusqu’aux plus récentes, la place occupée par les DSPs relativement aux autres structures de calcul et en fin l’outil de développement logiciel des DSP.

Citation

LOUTFIBenyettou , ,(2018); Processeurs DSPs: Caractéristiques, Architectures et Les outils de développement logiciel,,Editions universitaires europeennes

In this paper a transistor open-circuit fault diagnosis problem in two-level voltage inverter controlled shunt active power filter drives was discussed. Taking into consideration requirements of the contemporary monitoring drive systems original transistor fault diagnostic technique were proposed. Presented results were obtained by designed in PSIM software simulation model.

Citation

LOUTFI Benyettou , , (2017), Analysis of Transistor Open Fault Diagnosis for Shunt Active Power Filters, Indonesian Journal of Electrical Engineering and Computer Science, Vol:5, Issue:3, pages:521 ~ 529, IAES

In this paper fuzzy a sliding modes control (FSMC) using non linear sliding surfaces is designed to position the yaw and pitch angles of a Twin Rotor Multi-Input–Multi-Output system (TRMS). With the coupling effects, which are considered as the uncertainties, the highly coupled nonlinear TRMS is pseudo decomposed into a horizontal subsystem and a vertical subsystem. The chattering phenomenon is one of the current problems in the sliding mode control theory the main purpose is to eliminate this phenomenon. For this proposed we have used a fuzzy logic control to generate the hitting control signal. Moreover the output gain of the fuzzy sliding is tuned on-line by supervisory fuzzy system (adaptive fuzzy sliding mode control), so the chattering is avoided, the simulation results that are compared of conventional sliding mode control (SMC) with nonlinear sliding surface indicate that the control performance of the TRMS is satisfactory and the proposed AFSMC can achieve favorable tracking performance

Citation

LOUTFI Benyettou , , (2017), ADAPTIVE FUZZY SLIDING MODE CONTROLLER USING NONLINEAR SLIDING SURFACES APPLIED TO THE TWIN ROTOR MULTI-INPUT– MULTI-OUTPUT SYSTEM, Mediterranean Journal of Measurement and Control, Vol:13, Issue:1, pages:702-719, elsevier

Shunt Active Filter generates the reference current that must be provided by the power filter to compensate harmonic currents demanded by the load. This paper presents different types of methods for real time regeneration of compensating current for harmonic mitigation. Several methods including instantaneous real and reactive power theory have been proposed for extracting the harmonic content. This paper presents a different modification based on the same principle and compares its performances with sinusoidal source and balanced load condition. The Modified SRF method called, in this paper, Filtered Modified Reference Frame Method, because it uses filters and is based on the modified reference frame method. The performance of Shunt Active Power Filter in terms of THD (Total Harmonic distortion) of voltage and current is achieved with in the IEEE 519 Standard. The comparison of all methods is based on the theoretical analysis and simulation results obtained with MATLAB/SIMULINK.

Citation

LOUTFI Benyettou , , (2017), Comparative Study of Different Methods of Active Power Compensation,, AMSE JOURNALS-Modelage A, Vol:90, Issue:4, pages:310-327, IIETA

In this paper, characteristics of open transistor faults in cascaded H-bridge five-level three-phase PWM controlled shunt active power filter are determined. Phase currents can’t be trusted as fault indicator since their waveforms are slightly changed in the presence of open transistor fault. The proposed method uses H bridges output voltages to determine the faulty phase, the faulty bridge and more precisely, the open fault transistor

Citation

LOUTFI Benyettou , , (2015), Faults Diagnosis in Five-Level Three-Phase Shunt Active Power Filter, Journal of Power Electronics and Drive Systems, Vol:6, Issue:3, pages:576-585, IAES

As any other system, the shunt active power filter (SAPF) can be exposed to failure during harmonic and reactive currents compensation, which is mainly due to power electronic switches fault. This leads to decrease the harmonic current compensation quality and even to inject more harmonic current in the main power grid instead of eliminating those of caused by non linear load. Therefore, it is compulsory to detect precisely and without confusion the faulty electronic switch in SAPF to be replaced. In this paper, characteristics of open transistor faults in cascaded H-bridge seven-level three-phase PWM-controlled shunt active power filter are determined. Phase currents cannot be trusted as fault indicator, like done in many research works in this field, since their waveforms change slightly in the presence of open transistor fault. The proposed method uses H bridges output voltages to determine the faulty phase, the faulty bridge and more precisely, the open fault transistor.

Citation

LOUTFI Benyettou , , (2014), FAULTS DIAGNOSIS IN CASCADED H-BRIDGE SEVEN-LEVEL SHUNT ACTIVE POWER FILTER, Mediterranean Journal of Measurement and Control, Vol:10, Issue:4, pages:300-308, elsevier