Journal Articles

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Open Access
A NOVEL TECHNIQUE BASED ON IoT ACCELEROMETER FOR TRANSMITTING CIRCULAR CHART RECORDERS TO ELECTRICAL DATA
(2022) Mohamed Razi Morakchi; Zine Ghemari; Mabrouk Defdaf; Selman Djeffal; Nacer Belhout
The omnipresence of the Internet of Things (IoT)-based accelerom eter in the industry has been considered as an alternative to paper chart recorder yet it is unprecedentedly tested on pressure recording variation. To this end, this paper contributes to the improvement of data acquisition which is obtained from pressure chart recorders through accelerometer de vices. Firstly, the accelerometer device is thoroughly described. Then, the implementation of the accelerometer and IoT based accelerometers in a va riety of domains is discussed. Secondly, the used materials to carry out the bench test are presented, namely accelerometer, ADXL345, H3LIS331DL, Barton , DEWEIT pressure chart recorder, Raspberry pi and Arduino. The aforementioned devices are purposefully coupled, explicitly two types of ac celerometers are plugged into the raspberry pi for the sake of comparing the accuracy of transmitting mechanical to electronic charts. Finally, it is found that the accelerometers combined with wireless communication can offer a reliable alternative for expensive tasks. In addition, it perfectly facilitates data acquisition from a pressure chart recorder which is considered the first integration of an accelerometer in a pressure chart recorder. Interestingly, the H3LIS331DL accelerometer is way better than ADXL345 when it comes to processing high-pressure variation more than 3900 PSI within few sec onds. It is noteworthy to say that the proposed IoT-based accelerometer to assess the pressure variation in industry is considered for the first time as an electrical chart recorder
Open Access
Power Quality Enhancement in Double Fed Induction Generator Using Iterative Learning Control
(2023) Oussama Djaidja; . Hemza Mekki; Samir Zeghleche; Ali Djerioui
This paper presents a combination of the proposed Sliding Mode Control and a newly developed iterative learning control technique for harmonic compensation for the fault’s effect to adjust the active and reactive power to their desired references. The classical SMC cannot deal with the effect of the faults that can achieve graceful system degradation. Indeed, when there are significant disturbances, the input control signal of the SM controller is gradually adjusted by the ILC harmonic compensator in order to reject the disruptive harmonics effectively. Simulation results are given to demonstrate the effectiveness of the suggested SMC-ILC in terms of active and reactive power responses. The obtained results illustrate that the SMC-ILC strategy is valid and capable of ensuring a ripple-free operation in the presence of faults. The proposed controller is characterized by its simple design, robustness, and efficiency, which are convincing for practical application and may be used as a solution to the current Fault Tolerant Control. Streszczenie. W artykule przedstawiono kombinację proponowanej regulacji trybu ślizgowego i nowo opracowanej techniki iteracyjnego sterowania z uczeniem w celu kompensacji harmonicznych w obecności zwarć, aby sterować mocą czynną i bierną zgodnie z ich pożądanymi wartościami odniesienia. Klasyczny SMC nie radzi sobie ze skutkami usterek, które mogą doprowadzić do płynnej degradacji systemu. Rzeczywiście, gdy występują znaczne zakłócenia, wejściowy sygnał sterujący kontrolera SM jest stopniowo regulowany przez kompensator harmonicznych ILC w celu skutecznego odrzucenia zakłócających harmonicznych. Przedstawiono wyniki symulacji, aby pokazać skuteczność proponowanego SMC-ILC w zakresie odpowiedzi mocy czynnej i biernej. Uzyskane wyniki pokazują, że strategia SMC-ILC jest poprawna i zdolna do zapewnienia działania bez tętnień w przypadku wystąpienia usterki. Proponowany sterownik charakteryzuje się wytrzymałością, wydajnością i prostą konstrukcją, które przekonują do praktycznego zastosowania i mogą być stosowane jako alternatywa dla dotychczasowych Kontrola odporna na awarie. (Poprawa jakości energii w generatorze indukcyjnym z podwójnym zasilaniem przy użyciu iteracyjnej kontroli uczenia)
Open Access
Active Fault-tolerant Control for Surface Permanent Magnet Synchronous Motor Under Demagnetization Fault
(2024) Ayyoub Zeghlache; Hemza Mekki; Ali Djerioui; Mohamed Fouad Benkhoris
This paper introduces a novel method for controlling a surface permanent magnet synchronous motor (SPMSM) during demagnetization fault conditions. The proposed fault-tolerant control (FTC) system incorporates a combination of a fuzzy extended state observer (FESO) based on an interval type 2 fuzzy logic controller (IT2FLC) and second-order sliding mode control (SOSMC) utilizing the super-twisting algorithm. The FESO aims to identify and eliminate demagnetization faults through reconstruction control. The FTC system enhances the dynamic performance and disturbance rejection of the SPMSM, providing a robust solution in the event of a demagnetization fault
Open Access
Fault Tolerant Control Based on Adaptive Fuzzy Global Fast Dynamic Terminal Sliding Mode for Actuators Failures in an Octorotor UAV
(2021) Abdelmoula Saggai; Samir Zeghlache; Loutfi Benyettou
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
Open Access
اتجاهات طلبة معهد علوم وتقنيات النشاطات البدنية والرياضية نحو مادة الإحصاء دراسة ميدانية بجامعة محمد بوضياف- المسيلة
(2022) حفصة بن التومي; سامية براهيمي
تعالج الدراسة الحالية معرفة اتجاهات طلبة معهد علوم وتقنيات النشاطات البدنية والرياضية جامعة المسيلة، نحو مادة الإحصاء وكذا الفروق في هذه الاتجاهات لدى أفراد عينة الدراسة التي تعزى لمتغيرات ) الجنس، المستوي الدراسي (. حيث تم تطبيق الدراسة على عينة عشوائية قوامها (130 ) طالبا وطالبة ممن يزاولون دراستهم في جامعة المسيلة معهد علوم وتقنيات النشاطات البدنية والرياضية وذلك بالاعتماد على المنهج الوصفي ، وللتحقق من صدق الفرضيات استعانت الباحثة بالمقياس الذي أعده عبد الله الصمادي (2008 ) ، حيث تم التأكد من صدقه وثباته وفقا للبيئة المحلية، وقد أسفرت الدراسة عن النتائج التالية : 1ـــــ طبيعة اتجاهات طلبة معهد علوم وتقنيات النشاطات البدنية والرياضية نحو مادة الإحصاء ايجابية. 2ــــــ لا توجد فروق ذات دلالة إحصائية في اتجاهات طلبة معهد علوم وتقنيات النشاطات البدنية والرياضية نحو مادة الإحصاء تعزى لمتغير الجنس. 3ـــــ لا توجد فروق ذات دلالة إحصائية في اتجاهات طلبة معهد علوم وتقنيات النشاطات البدنية والرياضية نحول مادة الإحصاء تعزى لمتغير المستوى الدراسي(الليسانس، الماستر).
Open Access
Robust Nonsingular Terminal Sliding Mode Control of a Buck Converter Feeding a Constant Power Load
(2023) Khalil Louassaa; Aissa Chouder; Catalina Rus-Casas
In recent years, DC microgrid systems feeding constant power loads (CPLs) have been given a particular focus due to their effect on the overall system stability caused by their electrical characteristics behaving as negative incremental impedance. To address this issue, this paper investi gates the stabilization of a DC bus voltage in a DC microgrid (MG) feeding a CPL. The output voltage of the main DC bus is stabilized by using a robust nonsingular terminal sliding mode controller that is characterized by the elimination of the singularity problem that arises from the conventional terminal sliding mode controller. The CPL is emulated by a boost converter where its output voltage is tightly regulated. The system is investigated in terms of voltage following and disturbance rejection. The robustness and effectiveness of the proposed control strategy are assessed against input voltage fluctuations and power demand variations. The proposed controller is validated through simulations and an experimental setup
Open Access
Enhancement of Space Vector Modulation Based-Direct Torque Control Using Fuzzy PI Controller for Doubly Star Induction Motor
(Université de M'sila, 2022) Hassen Reghioui; Saad Belhamdi; Ammar Abdelkarim; Hellali Lallouani
The aim of this article is to improve the performance of the classical direct torque control (DTC) of doubly star induction motor (DSIM) drive by reducing the ripples level in electromagnetic torque and stator flux. For this reason, we present different strategies to enhance the performance of DTC such as DTC_SVPWM. This technique replaces hysteresis controllers by two (PI) controllers to generate the direct and the quadrature voltage components in d-q frame. However it is difficult to adjust the parameters of PI controller due to the complexity of the control system. The self-tuning PI fuzzy controller was proposed to adjust the PI parameters in this paper. Simulation is carried out using MATLAB/SIMULINK and the performance of the proposed fuzzy system is analyses. The simulation results show that the proposed method can significantly reduce the torque ripple and is suitable for various motor at different working state.
Open Access
Accurate Hysteresis Loops Calculation Under the Frequency Effect Using the Inverse Jiles- Atherton Model
(Université de M'sila, 2022) Ibtissem Belgasmi; Mourad Hamimid
In this present work, an attempt has been made to improve the shape of hysteresis loops as well as an accurate calculation of the iron losses under the frequency effect. The inverse Jiles-Atherton model is extended to describe the magnetization of ferromagnetic material behavior in dynamic regime. A new formulation of the magnetic effective field is used which consists of modifying the expression of the excess field to take correctly into account the moving domain walls effect. The new proposed expression of the effective field allows a good representation of the magnetic hysteresis behavior regarding the frequency increase. To validate this proposal approaches a measured and modeled hysteresis loops for different frequencies are compared
Open Access
Optimal techno-economic energy management strategy for building’s microgrids based bald eagle search optimization algorithm
(Université de M'sila, 2021) Seydali Ferahtia; Hegazy Rezk; Mohammad Ali Abdelkareem; A.G. Olabi
This research proposes an effective energy management strategy (EMS) for the economic operation under standalone and grid-connected operating modes of integrated solar renewables microgrid. The proposed microgrid is composed of a photovoltaic generator (PV), a fuel cell system (FC), and a battery storage system. The random nature of the renewable and the load power imposed some stability problems and economic problems, including operating costs. The suggested technique was based on the bald eagle search optimization algorithm (BES), which was designed for a one-day scheduling horizon. The key objectives of this paper were to satisfy the load power with the lowest operating costs under a stable direct current (DC) bus voltage, enhance the overall system efficiency and protect the battery from deep discharge and overcharge. To demonstrate the effectiveness of the proposed strategy, the obtained results were compared with other optimizers, including particle swarm optimization (PSO), salp swarm algorithm (SSA), artificial eco-system optimizer (AEO), COOT optimizer, and political optimizer (PO). The comparison confirmed the superiority of the proposed strategy in terms of minimum operating energy cost (0.1577c€/kW), high efficiency (87.395%) and final SoC (33.268%).
Open Access
FPGA Hardware in the Loop Validation of Torque and Flux Estimators for Direct Torque Control (DTC) of an Induction Motor (IM)
(Université de M'sila, 2022) Abdelghani Aib
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.
Open Access
A novel approach for water quality classification based on the integration of deep learning and feature extraction techniques
(Université de M'sila, 2021-05-01) Smail, Dilmi
Water quality monitoring plays a vital role in the protection of water resources, environmental management, and decision-making. Artificial intelligence (AI) based on machine learning techniques has been widely used to evaluate and classify water quality for the last two decades. However, traditional machine learning techniques face many limitations, the most important of which is the inability to apply these techniques with big data generated by smart water quality monitoring stations to improve the prediction. Real-time water quality monitoring with high accuracy and efficiency for intelligent water quality monitoring stations requires new and sophisticated techniques based on machine and deep learning techniques. For this purpose, we propose a novel approach based on the integration of deep learning and feature extraction techniques to improve water quality classification. In this paper, was chosen the Tilesdit dam in Bouira (Algeria) as a case study. Moreover, we implemented the advanced deep learning method - Long Short Term Memory Recurrent Neural Networks (LSTM RNNs) to construct an intelligent model for drinking water quality classification. Furthermore, principal component analysis (PCA), linear discriminant analysis (LDA) and independent component analysis (ICA) techniques were used for features extraction and data reduction from original features. Additionally, we used three methods of cross-validation and two methods of the out-of-sample test to estimate the performance of LSTM RNNs model. From the results we found that the integration of LSTM RNNs with LDA, and LSTM RNNs with ICA yields an accuracy of 99.72%, using Random-Holdout technique.
Open Access
A New Improved Variable Step Size MPPT Method for Photovoltaic Systems Using Grey Wolf and Whale Optimization Technique Based PID Controller
(Université de M'sila, 2021) Zemmit Abderrahim
In this work, we have developed two new intelligent maximum power point tracking (MPPT) techniques for photovoltaic (PV) solar systems. To optimize the PWM duty cycle driving the DC/DC boost converter, we have used two optimization algorithms namely the whale optimization algorithm (WOA) and grey wolf optimization (GWO) so we can tune the PID controller gains. The oscillation around the MPP and the fail accuracy under fast variable isolation are among the well-known drawbacks of conventional MPPT algorithms. To overcome these two drawbacks, we have formulated a new objective fitness function that includes WOA/GWO based accuracy, ripple, and overshoot. To provide the most relevant variable step size, this objective fitness function was optimized using the two aforementioned optimization algorithms (i.e., WOA and GWO). We have carried out several tests on Solarex MSX-150 panel and DC/DC boost converter based PV systems . In the simulation results section, we can clearly see that the two proposed algorithms perform better than the conventional ones in term of power overshoot, ripple and the response time.
Open Access
Modeling ofsub-bandanddiametereffectincarrier concentration ofCNTFET
(Université de M'sila, 2021) Abdelmalek Mouatsi; MimiaMarir-Benabbas
Carbon nanotubes(CNTs)havebeenseenasapotentiallyfuturematerialtoprovidean ultrasmall device(CNTFET(CarbonNanotubeFieldEffectTransistor)).Therefore,the studiesofsub-bandseffectsareneededinordertofindtheenhancementofcarrier transport inCNTFET. Also inthispaperthebandstructureoftherolled-upnanotubecanbeobtainedby zone-foldingfromthebandstructureofthegraphenesheet.Thismethodisusedinthis work andwesimulatedandanalyzedthebandstructureofcarbonnanotube.Wepresent analytical modelingofcarrierconcentrationinazigzagsemiconductingofcarbon nanotube fieldeffecttransistor(CNFET)usingthedispersionrelation E(k) (thefirstthree sub-bands)andgiventhedensityofstates(DOS),thecarrierconcentrationisobtained based onanumericalmethodasanalternativetotheusualFermi–Dirac integrals.Inorder to findtheinfluenceofthefirstthreesub-bandsenergyanddiameter dt of CNTinnon- degenerateanddegenerateregionofthecarrierconcentrationinCNTFET.Theresults obtainedshowedthatthediameterandtheenergyofsub-bandhaveasignificantimpact on thecarrierconcentrationofCNTFET
Open Access
Fault Detection Between Stator Windings Turns of Permanent Magnet Synchronous Motor Based on Torque and Stator-Current Analysis Using FFT and Discrete Wavelet Transform
(Université de M'sila, 2021) Yahia Laamari; Samia Allaoui; Abdelmalik Bendaikha; Salah Saad
The main idea of this article is to model and analyze the short circuit fault between the turns of the stator windings of a Permanent Magnet Synchronous Motor (PMSM). To accomplish this objective, a numerical model describing both the healthy and defective state of the PMSM is developed. Besides, this dynamic model is simulated and tested to study motor behavior under different fault conditions. Also, the frequency domain analysis based on the famous fast Fourier transform (FFT) as well as the time-frequency analysis using discrete wavelet transform (DWT) is established. This allowed extracting signatures related to the presence of an inter-turn short-circuit (ITSC). In the proposed method, ITSC detection is based on the decomposition of stator currents and electromagnetic torque. DWT and spectral analysis show that the low-frequency wavelet details as well as the total harmonic distortion (THD) can be easily used as a good short-circuit indicator. The simulation results of a healthy and faulty motor show the effectiveness of these two approaches but with a significant superiority of the DWT over the FFT.
Open Access
Commande tolérant aux défauts du robot manipulateur basé sur flou type 2 adaptatif backstepping en présence de la variation du charge utile
(Université de M'sila, 2021) Hilal, Rahali
Dans cette étude, un contrôleur flou type 2 adaptatif backstepping (AFT2BC) a été proposé pour un robot manipulateur industriel PUMA560 avec une charge variable et en présence de défauts d'actionneur. Le procédé réalise un suivi précis de la trajectoire aux effecteurs terminaux du manipulateur et améliore sa robustesse vis-à-vis de l'incertitude du modèle (variation de charge utile) et des défauts d'actionneur lors du contrôle de la position du robot. En utilisant les avantages de la commande de backstepping, la vitesse de convergence de l'algorithme de commande a été améliorée et son erreur en régime permanent a été réduite. De plus, l'intégration de la loi d'approximation continue a été utilisée pour éliminer les broutages en temps réel pendant le processus de contrôle sans affecter la robustesse du système. Une loi de commande adaptative floue type 2 a été conçue afin de garantir la compensation des défauts et des incertitudes, une petite erreur de suivi et une réponse transitoire rapide où la connaissance préalable des incertitudes et des perturbations externes n'est pas nécessaire, sans faire disparaître la propriété de précision et de robustesse de suivi. Enfin, l'analyse de stabilité a été effectuée en utilisant la méthode de Lyapunov et des simulations comparatives en fonctionnement défectueux sont menées pour montrer la supériorité de la stratégie de contrôle développée.
Open Access
Modeling and Enhancement of Piezoelectric Accelerometer Relative Sensitivity
(Université de M'sila, 2019) Salima Khaoula Reguieg; Zine Ghemari; Tarak Benslimane; Salah Saad
The piezoelectric accelerometer is an electronic instrument based on the direct effect of the piezoelectric material, this device is widely used in the industries to monitor and detect defects of rotating machines in an early stage. In this paper, a thorough study of the piezoelectric accelerometer is carried out to understand its design and operation principle. A mathematical model of the accelerometer is developed based on Newton motion law then a new relative sensitivity equation in function of measurement error is extracted. This new equation has allowed a significant reduction in the measurement error, a maximum improvement in the precision and an optimization of the piezoelectric accelerometer relative sensitivity by the appropriate choice of damping rate. These improvements have optimized the accelerometer parameters and performances.
Open Access
Three Level DTC SVM for Dual Star Induction Motor Fed by Tow Cascade VSI with DPCVF SVM Recti er
(Université de M'sila, 2020) Radhwane SADOUNI
We present in this paper a novel DTC-SVM scheme for a Dual Star Induction Motor fed by two 3 levels inverter with NPC structure, this type of inverter has many points of interest in comparison with the conventional 2 levels inverter, such as: sinus waveforms of the output voltage, low THD of voltage and current and low switching frequency. Also, we present in this article an improved direct power control with virtual ux (DPCVF-SVM) for the control of three phase recti er. It is shown that the DPC-SVM presents several advantages: con- stant switching frequency, good dynamic response, sinusoidal line currents . . . etc.
Open Access
Hybrid Type-2 Fuzzy Sliding Mode Control of a Doubly-Fed Induction Machine (DFIM)
(Université de M'sila, 2019-05) Herizi Abdelghafour; Bouguerra Abderrahmen; Zeghlache Samir; Rouabhi Riyadh
In this paper, we present a new sliding mode control strategy applied to the doubly fed induction machine, this control combines sliding mode and type-2 fuzzy logic to find robust control. The proposed control kept the part of the equivalent control by sliding mode and will change the part of the switching by a type-2 fuzzy controller has an input is the error between the measured value and the reference value. In this command we apply the orientation of the stator flux to have the decoupling between the flux and the current. The results obtained in simulation show the effectiveness of this command.
Open Access
Modeling and Control of Power System Containing PV System and SMES using Sliding Mode and Field Control Strategy
(Université de M'sila, 2020-07) Boudia, Assam; Messalti, Sabir; Harrag, Abdelghani
Although the great advance in power system production and operation, storage energy technologies and its control techniques can be considered as one of the most important and critical topics of power companies , government and consumers, especially when the power system containing renewable source and storage system simultaneously. In this paper, a novel electrical grid structure including photovoltaic system and storage system based on Superconducting Magnetic Energy Storage (SMES) has been proposed and investigated. The SMES produced power is injected in power system during specific time or when it required. Two control strategies for exchanged power Grid- SMES have been proposed and analyzed, the first uses sliding mode and the second uses field oriented control based on PI controller, also the injected SMES power is controlled by PID controller. In addition, the photovoltaic system operates at the MPP employing PID MPPT method. The proposed control strategies have been tested successfully in which many scenarios have been studied: standby and discharging of SMES, injection of SMES storage energy for variable and constant load and control of grid containing PV system. In addition, a comparative study of exchanged power Grid- SMES control using Sliding mode and field oriented control based on PI controller has been presented and discussed.
Open Access
New Improved Hybrid MPPT Based on Backstepping-sliding Mode for PV System
(Université de M'sila, 2019-06) Boudia, assam; Sabir, Messalti; Abdelghani, Harrag
In this paper, new improved maximum power point tracking using combinedbackstepping -sliding mode has been designed and studied, it is very known that the sliding mode control provides a good performance, however the charting (oscillation) is the most drawback of this method. So, to overcome the previous dilemma, a novel combined MPPT employing backstepping and sliding mode controller has been proposed, modeling of PV system and proposed hybrid backstepping-sliding have been presented with details. Simulation tests have been carried out using BP SX 150 solar panel, obtained results demonstrate a huge improvement in term of tracking, less oscillation and low ripple.