IJE_Vol 07 N 01
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Item Switched Capacitor Nine-level inverter with reduced components for Grid connected PV systems using Fuzzy logic controller(جامعة الوادي - university of el oued, 2022-06-03) Aboub, H; Mechouma, R; Azou, BThe novel use of a three-phase switched capacitor SC nine-level inverter in a PV system is described in this article. It has a low input voltage, fewer components, and is grid-connected. The primary benefit of the suggested inverter is high voltage gain, which is attained by switching capacitors in series and parallel to raise the output voltage with the proper switching management. It is simpler to design a fuzzy logic controller to increase the infusion of solar energy into the electrical network. The MATLAB/Simulink environment's findings demonstrate that the suggested fuzzy logic controller performs well under a range of illumination levels. In comparison to the traditional PI controller, the total harmonic distortion (THD) obtained is less than the limit of 0.67 %. Good spectrum analysis and strong performance with fewer components are made possible by the nine-level SC inverterItem Real time Data Acquisition of Solar Panel(جامعة الوادي - university of el oued, 2022-06-20) Rehouma, Youssef; Mahboub, MohamedAbd El basset; Degla, Aicha; Ghorma, DjaferDjafer; Nadjemi, Ahmed Abd AlouarethWe created a real-time acquisition system to track the voltage, current and temperature changes of the solar panel as we installed it in a charging regulator with a battery. The system consists of an Arduino Uno board, the controllership, which is programmed by the Arduino IDE application, based on the C language, and sensors to capture the variables, we put the SD card to save the data and the LCD to see it currently and can be monitoring the data by connecting the Arduino Uno board to the computer and processing it with the Excel applicationItem PV Energy Generation Assessment based Si-crystalline and CIS Technologies under Algerian Climatic Conditions(جامعة الوادي - university of el oued, 2022-06-16) Aziz, Haffaf Haffaf; Lakdja, FatihaAs in the whole world, renewable energies in Algeria, including photovoltaic energy, are attracting more and more attention in recent years. The integration of distributed generation (DG) into the power grid using renewable energy sources, such as PV, FC and wind, has important advantages such as low distribution losses, better continuity and power quality, and high system reliability. This paper is about a simulation study to analyze the energy assessment of a grid-connected photovoltaic system (GCPVS). The system with 1 MW capacity is simulated and analyzed based on solar resource, tilt and azimuth angles for each area and using Si-crystalline and CIS technologies under different weathers conditions in Algeria (Algiers, Chlef, Tlemcen, Tamanrasset and El Oued). The system configuration is simulated using the new version of PVGIS to account for PV plant energy output assessment. The obtained simulation results were discussed as per monthly and yearly values based on PV cell technologies and optimized tilt and azimuth angle.Item Mechanical speed estimation of a DFIG based on the Unscented Kalman Filter (UKF)(جامعة الوادي - university of el oued, 2022-06-25) Ben Sassi Hicham, Hicham; Lahrech, Khadija Khadija; Errahim, Fatimai; ES-Sbai, NajiaThis work proposes a new estimation technique for the doubly-fed induction generator (DFIG) variables. Researchers have designed numerous sensorless control strategies for the DFIG used either for mechanical speed, electromagnetic torque, or rotor position estimation. In this paper, an analysis of an Unscented Kalman Filter (UKF) will be presented as an observer for both rotor and stator currents, and mechanical speed, which are key information in DFIG control. The performance of the proposed observer has been validated in a 9 MW wind turbine under MATLAB/Simulink. Based on the results obtained, UKF is safely able to replace mechanically coupled sensors which have many disadvantages such as high cost, maintenance, and cabling requirementsItem Experimental study of temperature effects on the photovoltaic solar panels performances in Algerian desert(جامعة الوادي - university of el oued, 2022-06-17) Medekhel, Lamine Lamine; Srairi, Kamel; Labiod, ChouaibPhotovoltaic panels are operated in the Algerian desert areas under high temperatures, especially, in the summer, when the temperature may be reached 70°C on the panel's surface. The high temperature has a significant negative impact on the photovoltaic panels performance. In this paper, an experimental study to track the effects of temperature on the photovoltaic panels performances in different situations has been realized. The obtained results approve the importance of the temperature effects on the electrical power of the photovoltaic panel. The temperature increases lead to decreases in the performance of the panel, where an output power that does not exceed 52% of the nominal power at a high temperatureItem Effect of using sponge pieces in a solar still(جامعة الوادي - university of el oued, 2022-07-22) Bellila, Abdelkader; Kemerchou, Imad; Sadoun, Ali; Driss, ZiedSolar distillation is a very effective way to obtain pure water, especially in isolated areas where the water is infected or polluted to obtain drinking water. Two conventional solar stills of the same size (0.5 x 0.5 m) were tested for 8 hours. One still is priced as an SSR reference still and the other still which contains pieces of sponge is SSM and that is the subject of our work. The results show that the use of sponge in winter improves the yield of 10 %.Item Effect of plastic fins on a traditional solar still's efficiency(جامعة الوادي - university of el oued, 2022-05-27) Khechekhouche, A; de Oliveira Siqueira, A.M; Nabi, ElsharifSolar distillation is a relatively straightforward and environmental method. It is used in many countries and especially in isolated areas to treat polluted water. In this context, two similar solar stills of 50 x 50 cm were used in the same climatic conditions in order to test the influence of plastic fins on the performance of this device. The results show that there is a negative effect on the output of the distiller with a rate of 8.8 %. So this way is not recommended for researchers in this field