https://thesis.essa-tlemcen.dz:443 The DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material. Fri, 10 Jul 2026 14:33:57 GMT 2026-07-10T14:33:57Z http://hdl.handle.net/STDB_UNAM/719 Renewable Energy Systems Modeling and Simulation CHEMIDI, Abdelkarim This document serves as a course companion for Renewable Energy Systems Modeling and Simulation. The content is divided into four chapters, each addressing specific aspects of this field. Chapter 1 introduces the fundamental concepts and principles underlying renewable energy systems modeling and simulation. Chapter 2 present an overview about Matlab/Simulink environment. Chapters 3 and 4 delve deeper into the modeling of photovoltaic and wind energy conversion systems, respectively. Learning Objectives Upon completion of this course, students will be able to:  Develop proficiency in using MATLAB/Simulink for modeling and simulation tasks.  Apply various modeling techniques to complex electrical systems.  Model and simulate real-world electrical systems with accuracy. Thu, 01 Jan 2026 00:00:00 GMT http://hdl.handle.net/STDB_UNAM/719 2026-01-01T00:00:00Z http://hdl.handle.net/STDB_UNAM/718 Separation techniques in organic chemistry. Support for chemical engineer-Handout On CHEMOURI, Hafida the content of this handout which describes the Techniques for transforming a mixture of substances into two or more distinct components is intended for engineering students, these techniques are intended for purification (by extraction of impurities from the compound of interest), concentration (by eliminating part of the solvent) or fractionation (by separating a complex mixture into several different mixtures). A separation technique is always based on the use of a difference in properties between the compound of interest (the one we are trying to isolate) and the rest of the mixture. A good knowledge of the properties of the different components is therefore essential in order to retain the method and the parameters that will guarantee a successful separation. The main objective of this handout is to train students in a wide range of skills that will allow them to mix according to their sectors of activity, how to extract the desired product by these separation methods in heavy chemistry, in fine chemistry, in parachemicals, petrochemicals, etc Thu, 01 Jan 2026 00:00:00 GMT http://hdl.handle.net/STDB_UNAM/718 2026-01-01T00:00:00Z http://hdl.handle.net/STDB_UNAM/717 Contrôle à Distance de l’Arrosage : Développement d’une Application Mobile TALBI, Acheraf Adel; MAHI TANI, Ilyas Ce travail présente la conception et la réalisation d’un système d’irrigation intelligent contrôlé à distance à l’aide du microcontrôleur ESP32, de capteurs environnementaux et de l’application mobile Blynk. Le système permet de mesurer en temps réel l’humidité du sol, la température et le débit d’eau, et déclenche automatiquement ou manuellement l’arrosage selon des seuils définis. Les tests réalisés démontrent une amélioration notable de l’efficacité hydrique, avec des économies d’eau estimées entre 20% et 45%. Le système, modulaire et évolutif, peut être enrichi par une alimentation solaire, un stockage local des données ou encore des modèles prédictifs basés sur l’intelligence artificielle. Ce projet s’inscrit dans une dynamique d’agriculture intelligente visant une gestion durable et optimisée des ressources hydriques. Wed, 17 Dec 2025 00:00:00 GMT http://hdl.handle.net/STDB_UNAM/717 2025-12-17T00:00:00Z http://hdl.handle.net/STDB_UNAM/716 Course Handout Power Electronics Tahour, Ahmed Power electronics is a fundamental discipline of electrical engineering concerned with the static conversion of electrical energy using semiconductor components operating in switching mode. It enables the efficient adaptation of the voltage, current, frequency, or waveform of a power source to the requirements of a load or system. The main conversion structures include rectifiers (ACDC), inverters (DC-AC), choppers (DC-DC), and matrix converters (AC-AC). Power electronics relies on a close interaction between three fields: electrical engineering, electronics, and automation. Thanks to its performance in terms of energy efficiency, compactness, and flexibility, it is now ubiquitous in industrial systems, smart grids, electric transportation, renewable energy installations, and household appliances. Its ongoing development is also driven by advances in semiconductor materials and advanced control techniques, thus actively contributing to the challenges of energy transition and energy efficiency. This handout is intended for fourth-year engineering students in electrical engineering, automation, and electronics, and follows the official curriculum outlined by the Ministry of Higher Education and Scientific Research. Thu, 01 Jan 2026 00:00:00 GMT http://hdl.handle.net/STDB_UNAM/716 2026-01-01T00:00:00Z