Usually, electrical design engineer must take care about three-phase balancing before sending the... more Usually, electrical design engineer must take care about three-phase balancing before sending the final version of the LV electric wiring. The conventional method used to verify this task was just to divide all single-phase electrical-loads between the three phases without focusing the consideration on daily load-flow variation of the electrical-loads. For this, this paper describes a necessary new method that must be used in order to balance the three phases in 0.4 KV distribution smartgrids and its implementation and simulation in a Matlab/Simulink model.
This paper is proposed to introduce the management of the electrical power on the DiAmmonuim Phos... more This paper is proposed to introduce the management of the electrical power on the DiAmmonuim Phosphate (DAP) plant through a graphical user interface developed under "Visual Basic 6" and the manager database MySQL Server. The management of electrical energy in this paper is composed of three spots: the real-time monitoring, controlling the opening and closing of the supply lines and recording in a database.
Integration of green energy technology in our electrical grid offers considerable payback for the... more Integration of green energy technology in our electrical grid offers considerable payback for the environment and the sustainable development. Photovoltaic energy is extremely the amplest in the studied location. This manuscript deals with designing of a HCPV System for supplying the energy demand of a Carrefour Market at Gabes-Tunisia. The whole HCPV System (HCPV plant, DC-DC converters, batteries, bidirectional DC-DC converters and DC-AC inverters) was designed with appropriate and optimal system topology. This work was based on real load flow profile information with about 10.2 mega Wh/day daily energy required and faithful corresponding location (Latitude: 33.879, Longitude: 10.103) meteorological information (the annual global solar radiation is about 5.13 kWh/m²/d). Via a methodical approach and based on the relativity philosophy of day and night in PV system, the results show that only 803 HCPV multi-junctions solar cells modules are considered necessary for supplying the required energy of the OPE. Considering backup technique in HCPV System and linked to available components from manufacturers, string inverters topology with common DC bus was chosen.
RESUME-Ce travail propose une nouvelle méthode de synthèse de détection ; localisation et estimat... more RESUME-Ce travail propose une nouvelle méthode de synthèse de détection ; localisation et estimation des défauts (FDIE) d'une façon décentralisée pour des systèmes non linéaires interconnectés avec une application aux réseaux électriques. Les méthodologies de synthèse proposées sont basées sur deux observateurs. Le premier est une version modifiée de celui de Luenberger Généralisé (OLG) et le deuxième prend en compte un deuxième gain autre que celui d'état pour la reconstruction du défaut à travers des LMIs. Les résultats théoriques sont validés par des simulations en temps réel sur un modèle de réseau électrique de 3 noeuds.
RESUME-Le présent travail consiste à la contribution à une modélisation et simulation de l'archit... more RESUME-Le présent travail consiste à la contribution à une modélisation et simulation de l'architecture d'un système photovoltaïque haute concentration HCPV connecté au réseau électrique 15 kV alimentant un établissement recevant le public ERP de 400 V. Le travail a été basé sur des méthodologies de design réalisées au paravent et publiées dans des revues scientifiques. La simulation dans l'environnement Matlab/Simulink du système photovoltaïque connecté au réseau montre l'importance de l'intégration de ce dernier pour minimiser l'énergie provenant du réseau électrique dédié à l'alimentation des ERP d'une part, et de pouvoir injecter l'excès de production de l'énergie PV d'autre part. En se basant sur un profil de charge réel et en intégrant un algorithme d'optimisation adéquat pour le champ PV, ce travail présente qualitativement et quantitativement les écoulements des puissances entre le générateur photovoltaïque, l'ERP et le réseau électrique triphasé.
WORKSHOP SUPERVISION DES SYSTEMES MECATRONIQUES (SSM’22), 2022
RESUME-Le réseau électrique actuel regroupe des sources d'énergie de différentes natures. L'assem... more RESUME-Le réseau électrique actuel regroupe des sources d'énergie de différentes natures. L'assemblage de ces dernières nécessite l'intégration de divers étages de conversion d'énergie électrique afin d'adapter les natures des signaux (courants et tensions) au niveau du bus commun. Dans le cadre d'un projet postdoctoral e-Bride, un système multi-sources hybride à bus continu (DC) commun de 72V est en train de développement. Parmi les sources d'énergie électrique contenues dans ce banc d'essais s'intègre un générateur diesel. Ce dernier est connecté au bus DC via un convertisseur alternatif/continu (AC/DC) triphasé de type Boost. La commande de ce dernier requiert un facteur de puissance élevé et un niveau de tension de sortie précis. Pour garantir ce fonctionnement, le redresseur triphasé est commandé en utilisant une boucle de régulation de tension PI externe et deux boucles de régulation de courants internes (courant magnétisant Id et courant actif Iq) PI. Ce travail présente la validation de la robustesse de la commande utilisée pour ce redresseur. Pour justifier cette validation, la simulation du montage est réalisée sous différentes conditions à savoir la variation de la charge, la tension de référence du bus DC variable, amplitudes des tensions de la source AC variable et tension AC sous forme d'un signal sinusoïdal composé. Suite aux différentes variations et perturbations provoquées, la tension du bus continu suit toujours la dynamique de sa consigne ce que prouve les performances de la commande appliquée.
Bulletin of Electrical Engineering and Informatics, 2022
In industrials process and many studies cases, state and output derivative variables can be easil... more In industrials process and many studies cases, state and output derivative variables can be easily modeled in reciprocal state space (RSS) form than the standard one. Formulation of stabilization problem with a guaranteed cost control using feedback principle for Lipschitz nonlinear systems (LNS) in RSS is presented in this brief. The asymptotic stability, using the proper Lyapunov functions of the closed-loop system, is guaranteed. The control design problem is guaranteed through a resolution of linear matrix inequalities (LMI) technique under certain lemmas and minimization of non-standard cost control. Experimental validation shows the good performances of the proposed method using real-time implementation (RTI) with a digital signal processing (DSP) device (Arduino MEGA 2560).
This paper presents a simulation study of a multisource energy system integrating photovoltaic (P... more This paper presents a simulation study of a multisource energy system integrating photovoltaic (PV) panels, a battery, a supercapacitor, and a diesel generator, all managed by an Energy Management System (EMS). The research focuses on optimizing energy flow and resource allocation within the system. Detailed control strategies for each energy source are explored and their impacts on system performance are analyzed. Simulation results provide valuable insights into the efficient utilization of diverse energy sources and highlight the effectiveness of the EMS in achieving energy management objectives. This study contributes to the advancement of sustainable energy systems and their integration into practical applications.
This paper presents a comprehensive study on the implementation of an RST control strategy for ba... more This paper presents a comprehensive study on the implementation of an RST control strategy for battery management, integrated with a photovoltaic (PV) system. The research focuses on the application of RST ()control to regulate the battery charging and discharging processes, ensuring optimal energy use and storage and utilization. The paper presents the modeling of a buck-boost converter as an integral component in the system, highlighting its role in interfacing the battery. The control strategy is outlined, outlining the integration of time-based regulation, proportional and integral feedback, and its effectiveness in maintaining stable battery operation. The proposed approach is validated through simulation studies, demonstrating its capability in enhancing the performance of the battery-PV system. Overall, this research contributes to the understanding of RST control's role in managing battery systems, especially in conjunction with renewable energy sources.
The phrase “Multi-Power System (MPS)” refers to an application that combines different energy con... more The phrase “Multi-Power System (MPS)” refers to an application that combines different energy conversion technologies to meet a specific energy need. These integrated power systems are rapidly being lauded as essential for future decarbonized grids to achieve optimum efficiency and cost reduction. The fact that MPSs multiply several sources also multiplies their advantages to be environmentally friendly and increases the possibility of energy autonomy as they do not depend on a single source. Consequently, this increases the reliability and reduces the production costs and the size of the storage system. However, the main disadvantages of such a system are the complexity of its architecture and the difficulty in managing the power level, which leads the system to face many faults and sometimes failure. In this case, a fault-tolerant control (FTC) system can automatically adapt to component malfunctions while maintaining closed-loop system stability to achieve acceptable performance. However, on the way to build efficient FTC, one first needs to study the faults that may occur in the system in order to tolerate them. This review paper presents the faults of the MPS electrical sources used in a hybrid system, including a photovoltaic generator and a diesel generator, plus a lead–acid battery as a storage device. Only the most-encountered faults are treated.
Lead-acid battery technology has been effectively fulfilling a variety of energy needs, ranging f... more Lead-acid battery technology has been effectively fulfilling a variety of energy needs, ranging from classic car industry requirements to current plug-in hybrid electric vehicle requirements through any stationary system. Depending on the operating conditions, the battery can be affected in many ways. The same deterioration mechanisms affect all types of lead-acid batteries but to varying degrees. Two electrodes with the aqueous H SO electrolyte (sulfuric acid) and the terminals are the main components of a lead-acid battery. A grid and the active material-PbO as the positive active material and Pb as the negative active material-make up the electrodes.
Bulletin of Electrical Engineering and Informatics
In industrials process and many studies cases, state and output derivative variables can be easil... more In industrials process and many studies cases, state and output derivative variables can be easily modeled in reciprocal state space (RSS) form than the standard one. Formulation of stabilization problem with a guaranteed cost control using feedback principle for Lipschitz nonlinear systems (LNS) in RSS is presented in this brief. The asymptotic stability, using the proper Lyapunov functions of the closed-loop system, is guaranteed. The control design problem is guaranteed through a resolution of linear matrix inequalities (LMI) technique under certain lemmas and minimization of non-standard cost control. Experimental validation shows the good performances of the proposed method using real-time implementation (RTI) with a digital signal processing (DSP) device (Arduino MEGA 2560).
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Papers by MANSOURI KARIM
and cost reduction. The fact that MPSs multiply several sources also multiplies their advantages to be environmentally friendly and increases the possibility of energy autonomy as they do not
depend on a single source. Consequently, this increases the reliability and reduces the production costs and the size of the storage system. However, the main disadvantages of such a system are the complexity of its architecture and the difficulty in managing the power level, which leads the system to face many faults and sometimes failure. In this case, a fault-tolerant control (FTC) system can automatically adapt to component malfunctions while maintaining closed-loop system stability to achieve acceptable performance. However, on the way to build efficient FTC, one first needs to study the faults that may occur in the system in order to tolerate them. This review paper presents the faults of the MPS electrical sources used in a hybrid system, including a photovoltaic generator and a diesel generator, plus a lead–acid battery as a storage device. Only the most-encountered faults are treated.