Browsing by Author "CHIHEB Sofiane (Co-Auteur)"

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    Energy Management Strategies of PV-Battery/Supercapacitor System for Electric Vehicles
    (Journal Européen des Systèmes Automatisés, 2024) DJELLAD Abdelhak (Co-Auteur); CHIHEB Sofiane (Co-Auteur)
    The development of EVs (Electric Vehicles) as a zero-carbon alternative to fossil fuel powered transport represents the importance of development in HESS (Hybrid Energy Storage System) and EMS (Energy Management Strategies). The present study focuses on a HESS model based on a parallel full-active configuration that integrates a (Li-ion) battery with a supercapacitor connected by two DC-DC bi-directional converters, are suitable options to power supply an electric vehicle. The EMS governing the HESS emerges as a critical element in the overall performance of EVs. The fuzzy logic control strategies have been widely used in high-level supervision and control; MPPT fuzzy logic is used for controller PV system. A complete study of the HESS; PV system, battery/supercapacitor is tested using MATLAB/Simulink. The simulation results show the performance and efficiency of the battery/supercapacitor for the EVs. Hence, the benefits of battery/supercapacitor use in a hybrid storage system are investigated and analyzed
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    Optimization of Fractional Order PI Controller by PSO Algorithm Applied to a Grid Connected Photovoltaic System
    (Journal Européen des Systèmes Automatisés, 2022) DJELLAD Abdelhak (Co-Auteur); CHIHEB Sofiane (Co-Auteur)
    With the increasing integration of renewable energies into power grids, their control and power quality are becoming the main focus of many research efforts. In a grid-connected photovoltaic system, the control strategy is necessary to efficiently use the solar energy as well as to ensure high power quality. This paper presents a study on the robustness of a Fractional Order PI controller based on the Particle Swarm Optimization algorithm (PSOFOPI) in a grid-connected PV system. The controller used was integrated into the inverter to apply voltage-oriented control (VOC). Fractional order controllers have an additional degree of freedom, so that a wider range of parameters is available to provide better control. Parameter optimization of the FOPI and classical PI controllers are performed using the PSO algorithm. The performance of the FOPI controller is compared with that of the classical PI controller. A complete study of the behavior of the grid connected PV system is tested using MATLAB/Simulink. The simulation results show the performance and efficiency of the PSO-FOPI controller compared to the classical PI controller in terms of rapidity, stability and precision, as well as the THD reduction of the current injected to the grid for any variation of solar irradiance
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    The PV generation impact on the system’s short-circuit power- study of the PIAT case
    (ELEKTROTEHNISKI VESTNIK, 2022) CHIHEB Sofiane (Co-Auteur)
    The National Society of Electricity and Gas of Algeria (SONELGAZ) is interconnecting the national power grid with the isolated power grids in the south of the country. One such grid is the Pole In Salah-Adrar Timimoune (PIAT). It is an exceptional power grid of considerable installed renewable energy sources values. The paper investigates the short-circuit phenomenon in the PIAT. The share of the renewable sources in the PIAT fault current is studied, and the difference between fault currents with and with-no integration of renewable sources are studied in order to find out if the protection parameters need to be changed in the case of the absence of renewable sources. Also, to interconnect the PIAT with other power grids, the PIAT short-circuit power is studied at different short-circuit points in the current situation and after the planned increase in the PV installed power. It is shown that the actual installed renewable sources contribute to the fault current with less than 10 % regardless of the fault position. Increasing the installed power by 300 % would increase the short-circuit power with less than 10 %. A method is suggested to determine the power grid short-circuit power using the short-circuit admittance instead of the impedance