AHMED Bouchelaghem

CHAARAOUI, NESRINE , SENOUSSAOUI, FELLA

ETUDE ET DIMENSIONNEMENT D'UN SYSTEME DE POMPAGE PHOTOVOLTAIQUE

BELMEBROUK, Mohammed , BERAHAL, Zakaria

ETUDE TECHNICO ÉCONOMIQUE D’UN SYSTÈME PHOTOVOLTAIQUE EN SITE ISOLE PAR PVSYST

OUALID Mokhtar

Elaboration d’un programme d’aide au diagnostic pour un système photovoltaïque autonome

Ce document pédagogique offre une étude approfondie des différents types d'actionneurs utilisés dans les systèmes automatisés, en les comparant aux capteurs et transducteurs. Le polycopié est structuré en deux parties principales : la première traite des actionneurs pneumatiques et hydrauliques, détaillant la production d'énergie, les pré-actionneurs (distributeurs) et les vérins. La seconde partie se focalise sur les actionneurs électriques, incluant les relais, les contacteurs, ainsi que les moteurs à courant continu et les moteurs pas à pas. À travers des exemples pratiques comme la presse pneumatique ou la robotique (ASIMO), le cours permet d'apprendre à choisir et dimensionner l'instrumentation adaptée à une application industrielle spécifique. MOTS-CLÉS : Actionneurs, Pneumatique, Hydraulique, Électrique, Moteurs, Vérins, Mécatronique, Systèmes Embarqués.

Citation

AhmedBOUCHELAGHEM , ,(2025-09-10); Actionneurs Industriels,Université de M'sila, département Electronique,

This work shows the catalytic activity of the methane oxidation reaction on catalytic powders such as perovskite - aluminate oxide La1-xSrxAlO3-δ , with x = 0, 0.1, 0.2, 0.3. The La1-xSrxAlO3-δ (0

Citation

Ahmed BOUCHELAGHEM , , (2025-04-30), The effect substitution of lanthanum-aluminate oxide of the catalytic performance of La1-xSrxAlO3-δ (x = 0.1, 0.2, 0.3) for methane oxidation, Journal of New Materials for Electrochemical Systems, Vol:28, Issue:2, pages:211-216, Prof. Oumarou SAVADOGO

Despite the existence of accurate mathematical models facilitating the analysis of photovoltaic (PV) sources’ behaviour under diverse conditions, including normal operation and situations involving mismatch phenomena such as partial shadowing and various faults (i.e., PV cells operating in forward bias and reverse bias quadrants), an important issue still persists. Crucial parameters essential for adjusting these models, particularly those related to reverse-biased characteristics such as breakdown voltage, are often absent in manufacturers’ datasheets. This omission presents a substantial challenge, as it restricts the ability to acquire comprehensive and accurate information required for a thorough analysis of devices in the second quadrant. To address this issue, our research introduces a novel method for measuring the reverse-biased I–V characteristics of individual PV cells within a module without having to dissociate them from the PV module encapsulants. The process involves measuring the forward-bias I–V curves of both the fully illuminated PV module and a partially shaded PV module with only one completely shaded cell. This can be achieved outdoors and by utilising commercially available I–V tracers. Thus, the reverse I–V curve can easily be derived from these forward bias I–V curves. Finally, the proposed method serves as a nondestructive technique for characterising solar cells in the second quadrant. This innovative approach offers a promising solution for assessing the performance and health of PV modules without causing damage and may result in significant cost savings.

Citation

Mahmoud DRIF , Ahmed BOUCHELAGHEM , ABDEREZAK Guemache , Djamel SAIGAA , djoubair abdelouahab .benhamadouche@univ-msila.dz, , (2024-06-25), A Novel Method to Obtain Reverse Bias I–V Curves for Single Cells Integrated in Photovoltaic Modules, Power Electronics and Drives, Vol:9, Issue:44, pages:413-424, Teresa Orlowska-Kowalska

In this research, we study the comparison of the removal of a domestic insecticide declared as an organic pollutant from the water on the surface of the natural clay (N-C) and Montmorillonite sodium (Mnt-Na), where we reveal general information about adsorbents on organic pollutants, as well as physical and chemical methods for their spectral analyses. In addition, we have a simplified explanation of the adsorption phenomenon and then we study the various factors that affect it, represented by the effect of the initial concentration of the pollutant solution, the effect of the pH, temperature and the contact time, conductivity effect, turbidity analysis, and dissolved oxygen analysis. And we have achieved the results that benefit us by comparing the effectiveness of Natural clay (N-C) and Montmorillonite sodium ( Mnt-Na) in the elimination of insecticide, in addition to judging the possibility of describing adsorption by the best adsorbent.

Citation

ABDEREZAK Guemache , Ahmed BOUCHELAGHEM , Mahmoud DRIF , Fares KAHOUL , Louanes HAMZIOUI , , (2023-06-20), Elimination of the Declared Insecticide by Natural and Modified Clay and Montmorillonite Sodium, Journal of Environmental Treatment Techniques, Vol:11, Issue:2, pages:94-99, IIETA

No microscopic analysis is possible without dyes, stains or indicators. Indeed, dyes and stains are extraordinarily critical in biology, biochemistry, molecular biology and microbiological research, because they are frequently used to dye or dye certain cellular components, proteins or DNA/RNA to visualize them. In biochemistry and molecular biology, dyes and stains are used to highlight biological tissues and to quantify or qualify the presence of certain chemicals when attached to substrates. In microbiology, dyes and stains are used to make microorganisms visible or differentiate them due to distinct colorings properties

Citation

ABDEREZAK Guemache , Ahmed BOUCHELAGHEM , Mahmoud DRIF , Fares KAHOUL , Louanes HAMZIOUI , ,(2023-03-14), Heterogeneous phase adsorption of carmine, phenolphthalein and eosin dyes on activated carbon and natural clay, experiments, characterization and physical interpretations,1st International Seminar on Process Engineering & Environment (ISCPE2023),Biskra

Ca1-xSrxMnO3 (x = 0, 0.1, 0.2) nanoparticules were synthesized by the coprecipitation method. The structural analysis reveals the presence of Octahedral coordination of MnO4. Fourier transform infrared spectroscopy (FTIR) spectra of MnO4 show the occurrence of O-Mn-O vibrational mode at around 590 cm-1. The XRD indicates that the samples are Rhombohedral lattice. The differential and thermo gravimetric analysis, curve obtained from the composition x=0.1,it has distinct pure phase at 600°C. The study of electrochemical behavior was carried out by cyclic Voltammetry (CV) and impedance spectroscopy (EIS).Show that the apparent electrochemical activity improves by increasing the strontium concentration. This is due to the particle size effect of strontium

Citation

Ahmed BOUCHELAGHEM , , (2022-06-30), Properties and Characteristic of Perovskite Type Ca1-x SrxMnO3., Journal of New Materials for Electrochemical Systems, Vol:25, Issue:2, pages:145-148, Prof. Oumarou SAVADOGO

The phenomenon of mismatch between the modules constituting a photovoltaic (PV) array is one of the problems that frequently occur in PV systems, in particular, the shading issue, which may result in less energy production. To deal with this issue, various configuration methods have been adopted in the literature. However, these configuration methods are suffering from implementation complexity in practice, such as more wiring, more sensors, the need to have more processing, and more memory use. In the present paper, a comparative study between the current balancing (CB) and particle swarm optimization (PSO)-based PV reconfiguration methods is carried out using MATLAB/Simulink software. The reached findings under varying partial shading conditions (PSCs) are investigated to determine the best approach among them

Citation

Mahmoud DRIF , Ahmed BOUCHELAGHEM , abdelouadoud.loukriz@univ-msila.dz, ,(2022-04-17), Current balancing and PSO methods-based PV array output power optimization: a comparative study,International Conference of Advanced Technology in Electronic and Electrical Engineering (ICATEEE),Mohamed Boudiaf ,University ,M’sila