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var str = 'Effect of the permanent magnets locations on the voltage generated by permanent magnet generator';
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]]>
Permanent Magnet Generators]]>
Magnetic Field Calculation]]>
Finite Elements Method]]>
Currently, the permanent magnet generators find wide application in the renewable energies field such as the conversion of the wind energy or the tidal energy to an electrical energy. The main objective of this work is the calculation of the magnetic field created by the permanent magnets of the both selected rotor types (magnets on surface and inset type magnets) by taking into account the rotation of the rotor, and therefore the calculation of the electric field induced in the stator, which allows us to calculate the electromotive force exerted on the conductors of the stator coils in order to know the induced voltage by each generator, then, we make a comparison between them to determine the type of generator most answered in the industry. To reach our goal we use the finite elements method to solve the partial derivative equations those describe this physics problem.]]>
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var str = 'Benyoucef, Djilali';
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]]>
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var str = 'Taleb, Rachid';
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]]>
var options = {
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var str = 'Helaimi, M'hamed';
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]]>
Journal of Renewable Energies; Vol. 21 No. 4 (2018): Volume 21 (Regular); 675 - 680]]>
Journal of Renewable Energies; Vol. 21 No 4 (2018): Volume 21 (Regular); 675 - 680]]>
2716-8247]]>
1112-2242]]>
10.54966/jreen.v21i4]]>
Renewable Energy Development Center]]>
2023-10-12]]>
Copyright (c) 2021 Journal of Renewable Energies]]>
https://creativecommons.org/licenses/by-sa/4.0]]>
https://revue.cder.dz/index.php/rer/article/view/720/1167]]>
application/pdf]]>
eng]]>
info:eu-repo/semantics/article]]>
info:eu-repo/semantics/publishedVersion]]>
https://revue.cder.dz/index.php/rer/article/view/720]]>
10.54966/jreen.v21i4.720]]>
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var str = 'Apport des techniques neuromimétiques à la commande d'un onduleur asymétrique à onze niveaux Application à l'alimentation d'une MASDE';
document.write(linkifyHtml(str, options));
]]>
Onduleurs multi niveaux asymétriques]]>
atégie d’élimination des harmoniques]]>
Réseaux de neurones artificiels]]>
Les onduleurs multi niveaux asymétriques triphasés, étudiés sont constitués de la mise en série d’onduleurs partiels par phase. La commande de ces derniers par la stratégie de l’élimination des ’harmoniques fait appel à la résolution des systèmes d’équations non linéaires pour obtenir les angles d’amorçage des composants électroniques, et l’implémentation pratique de cette stratégie nécessite une très grande capacité mémoire. Dans cet article, nous proposons une approche mathématique exigeant moins de calculs et d’implémentation facile est souhaitée. Cette approche est réalisée par les réseaux de neurones artificiels (RNA). Ces onduleurs sont utilisés pour l’entraînement de la machine asynchrone double étoile (MASDE). Les résultats de simulations obtenus ont montré un comportement très satisfaisant de la machine.]]>
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var str = 'Taleb, Rachid';
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]]>
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var str = 'Bessaad, Taieb';
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]]>
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var str = 'Yahdou, Adil';
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]]>
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var str = 'Mehedi, Fayçal';
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]]>
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var str = 'Belboula, Abdelkader';
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]]>
Journal of Renewable Energies; Vol. 21 No. 4 (2018): Volume 21 (Regular); 661 - 674]]>
Journal of Renewable Energies; Vol. 21 No 4 (2018): Volume 21 (Regular); 661 - 674]]>
2716-8247]]>
1112-2242]]>
10.54966/jreen.v21i4]]>
Renewable Energy Development Center]]>
2023-10-12]]>
Copyright (c) 2021 Journal of Renewable Energies]]>
https://creativecommons.org/licenses/by-sa/4.0]]>
https://revue.cder.dz/index.php/rer/article/view/719/1166]]>
application/pdf]]>
eng]]>
info:eu-repo/semantics/article]]>
info:eu-repo/semantics/publishedVersion]]>
https://revue.cder.dz/index.php/rer/article/view/719]]>
10.54966/jreen.v21i4.719]]>
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var str = 'Empirical models for estimating solar radiation in Algeria: A review and case study';
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]]>
Solar radiation]]>
Empirical model]]>
Sunshine duration]]>
Illizi]]>
The information about solar radiation is limited in space and time at different local regions around Algeria due to the cost of instrumental requirements. Therefore, a number of models have been developed in different regions to estimate incident solar radiation. This contribution includes a review of research works carried out in the development of empirical solar radiation models in Algeria. Furthermore, in order to contribute to the national efforts in establishing solar radiation, sunshine duration empirical models for estimating global solar radiation were developed in the Sahara desert area of Illizi region. Daily meteorological data during 2007 - 2014 were used for models calibration and the data from 2015 to 2018 were used to validate the models. The results revealed that linear, quadratic and cubic empirical equations give very high accurate values of monthly mean daily global solar radiation on a horizontal surface, with smaller statistical testes between measured and estimated values.]]>
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var str = 'Marif, Yacine';
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]]>
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var str = 'Hebbal, Belkhir';
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]]>
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var str = 'Maouedj, Rachid';
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]]>
Journal of Renewable Energies; Vol. 21 No. 4 (2018): Volume 21 (Regular); 651 - 660]]>
Journal of Renewable Energies; Vol. 21 No 4 (2018): Volume 21 (Regular); 651 - 660]]>
2716-8247]]>
1112-2242]]>
10.54966/jreen.v21i4]]>
Renewable Energy Development Center]]>
2023-10-12]]>
Copyright (c) 2021 Journal of Renewable Energies]]>
https://creativecommons.org/licenses/by-sa/4.0]]>
https://revue.cder.dz/index.php/rer/article/view/718/1165]]>
application/pdf]]>
eng]]>
info:eu-repo/semantics/article]]>
info:eu-repo/semantics/publishedVersion]]>
https://revue.cder.dz/index.php/rer/article/view/718]]>
10.54966/jreen.v21i4.718]]>
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var str = 'Modeling and analysis of boost converter in small-signals applied to the wind energy conversion system using Matlab/Simulink';
document.write(linkifyHtml(str, options));
]]>
Pole placement]]>
Boost converters]]>
Small-signal stability]]>
Gain vector]]>
WECS]]>
The problem of stabilizing a boost converter in small-signal situations using linear control laws is derived by the means of oriented circuit procedure. After establishing a small-signal circuit model for the boost regulator including state-feedback, conditions for the stability of circuit are studied. Thereafter, a linear analysis is performed in order to design the desired dynamics and robust behavior of the boost converter. The linear analysis assumed shows that only a state feedback gain matrix is necessary, provided that the coordinates of the equilibrium point are known. This operation is done by using the root locus methodto choose the eigenvalue of this gain vector. It aims at presenting how boost converter averaged behavior can be tailored by means of feedback control structures. Various control structures with different design methods have become classical in control systems theory with a similar degree of efficiency. It is generally assumed that the obtained control input is applied to boost converter by using pulse-width modulation. Performance of the proposed pole placement method is evaluated by Simpower/Matlab simulation at the equilibrium operating points chosen. To verify a feasibility of the proposed method, set parameters of system is implemented. The control scheme is verified through Matlab simulation, which is present to verify the performance of proposed method and simulation results validate the analytical predictions. The circuit studied is an element of the wind energy conversion system (WECS).]]>
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var str = 'Nisso, Nicodem';
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]]>
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var str = 'Raïdandi, Danwé';
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]]>
var options = {
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var str = 'Djongyang, Noël';
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]]>
var options = {
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var str = 'Menga, Francis Daniel';
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]]>
Journal of Renewable Energies; Vol. 21 No. 4 (2018): Volume 21 (Regular); 635 - 649]]>
Journal of Renewable Energies; Vol. 21 No 4 (2018): Volume 21 (Regular); 635 - 649]]>
2716-8247]]>
1112-2242]]>
10.54966/jreen.v21i4]]>
Renewable Energy Development Center]]>
2023-10-12]]>
Copyright (c) 2021 Journal of Renewable Energies]]>
https://creativecommons.org/licenses/by-sa/4.0]]>
https://revue.cder.dz/index.php/rer/article/view/717/1164]]>
application/pdf]]>
eng]]>
info:eu-repo/semantics/article]]>
info:eu-repo/semantics/publishedVersion]]>
https://revue.cder.dz/index.php/rer/article/view/717]]>
10.54966/jreen.v21i4.717]]>
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var str = 'Performance analyses of grid-connected photovoltaic power system';
document.write(linkifyHtml(str, options));
]]>
Photovoltaïque]]>
Grid]]>
Connecté]]>
Ratio de performance]]>
Logiciel PVsyst]]>
Grid-connected photovoltaic systems are required to introduce photovoltaic solar energy into urban areas. To analyze these systems, a 15 MWp power system has been installed at the site of Oued Keberit a town and commune in Souk Ahras, province in North-Eastern Algeria. The array power output was estimated by using measured I – V curves for the installed modules with minimization of mismatch losses. The supplied grid energy and main performances are described. Results show an annual performance of 83.9 % and the energy production is 23 735 MWh/year, which is sufficient energy to Power approximately 5 000 homes with clean renewable energy.]]>
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var str = 'Soualmia, Adel';
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]]>
var options = {
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var str = 'Chenni, Rachid';
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]]>
Journal of Renewable Energies; Vol. 21 No. 4 (2018): Volume 21 (Regular); 623 - 634]]>
Journal of Renewable Energies; Vol. 21 No 4 (2018): Volume 21 (Regular); 623 - 634]]>
2716-8247]]>
1112-2242]]>
10.54966/jreen.v21i4]]>
Renewable Energy Development Center]]>
2023-10-12]]>
Copyright (c) 2021 Journal of Renewable Energies]]>
https://creativecommons.org/licenses/by-sa/4.0]]>
https://revue.cder.dz/index.php/rer/article/view/716/1163]]>
application/pdf]]>
eng]]>
info:eu-repo/semantics/article]]>
info:eu-repo/semantics/publishedVersion]]>
https://revue.cder.dz/index.php/rer/article/view/716]]>
10.54966/jreen.v21i4.716]]>
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var str = 'Performance comparison of different maximum power point trackers for photovoltaic system under fast varying of environmental conditions';
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]]>
Photovoltaic (PV)]]>
Maximum power point tracking (MPPT)]]>
Incremental conductance]]>
Perturb and observe]]>
Sliding mode]]>
Fuzzy logic]]>
Knowing that a large number of MPPT (maximum power point tracking) techniques exist so far and that each technique has its own advantages and disadvantages. Therefore, an appropriate examination of these techniques is indispensable to facilitate the selection of one of the more appropriate ones for a given application. This document provides a summary of these MPPT algorithms. Among them, four commonly used are examined and compared using five evaluation criteria. Perturb and observe (PO), incremental conductance (IC), sliding mode (SM), and fuzzy logic (FL) control are selected for this study and tested under a rapid change of illumination. A combined step and ramp changes in solar illumination is used to assess the effectiveness of the chosen MPPTs. The simulations of the PV system are performed by Simulink tools of MATLAB software. The results conclude that the fuzzy logic controller is the best MPP (maximum power point) tracker due to the absence of steady-state oscillations and its average efficiency of 98%. Second place belongs to the slide mode control which is the fastest and has small fluctuations. In addition, the best MPPT is successfully tested for a change in temperature and load.]]>
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var str = 'Belkaïd, Abdelhakim';
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]]>
var options = {
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var str = 'Colak, Ilhami';
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]]>
var options = {
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var str = 'Kayisly, Korhan';
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]]>
Journal of Renewable Energies; Vol. 21 No. 4 (2018): Volume 21 (Regular); 601 - 621]]>
Journal of Renewable Energies; Vol. 21 No 4 (2018): Volume 21 (Regular); 601 - 621]]>
2716-8247]]>
1112-2242]]>
10.54966/jreen.v21i4]]>
Renewable Energy Development Center]]>
2023-10-12]]>
Copyright (c) 2021 Journal of Renewable Energies]]>
https://creativecommons.org/licenses/by-sa/4.0]]>
https://revue.cder.dz/index.php/rer/article/view/715/1162]]>
application/pdf]]>
eng]]>
info:eu-repo/semantics/article]]>
info:eu-repo/semantics/publishedVersion]]>
https://revue.cder.dz/index.php/rer/article/view/715]]>
10.54966/jreen.v21i4.715]]>
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var str = 'Action inhibitrice de l'akwakur 353 sur la corrosion de l'acier ordinaire en milieu neutre';
document.write(linkifyHtml(str, options));
]]>
Corrosion]]>
Inhibiteur]]>
Polarisation]]>
Spectroscopie d’impédance électrochimique]]>
L’étude du comportement à la corrosion de l’acier ordinaire en milieu neutre et l’évaluation du pouvoir protecteur de l’inhibiteur commercial Akwakur 353 destiné au circuit de refroidissement du complexe Fertial (Asmidal Annaba-Algérie) a été réalisée par des méthodes électrochimiques stationnaires (courbes de polarisation) et non stationnaire (spectroscopie d’impédance électrochimique). Cette dernière décrit le mécanisme d’action de l’inhibiteur et les différents phénomènes se déroulant à l’interface métal/électrolyte.]]>
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var str = 'Morakchi, Karima';
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]]>
var options = {
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var str = 'Hamel, Abdellah';
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]]>
var options = {
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var str = 'Kherrat, Rochdi';
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]]>
Journal of Renewable Energies; Vol. 21 No. 4 (2018): Volume 21 (Regular); 593 - 599]]>
Journal of Renewable Energies; Vol. 21 No 4 (2018): Volume 21 (Regular); 593 - 599]]>
2716-8247]]>
1112-2242]]>
10.54966/jreen.v21i4]]>
Renewable Energy Development Center]]>
2023-10-12]]>
Copyright (c) 2021 Journal of Renewable Energies]]>
https://creativecommons.org/licenses/by-sa/4.0]]>
https://revue.cder.dz/index.php/rer/article/view/714/1161]]>
application/pdf]]>
eng]]>
info:eu-repo/semantics/article]]>
info:eu-repo/semantics/publishedVersion]]>
https://revue.cder.dz/index.php/rer/article/view/714]]>
10.54966/jreen.v21i4.714]]>
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var str = 'A modified perturb and observe maximum power point tracking algorithm for a standalone single phase photovoltaic system using boost converter';
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]]>
Boost converter]]>
Maximum Power Point Tracking]]>
Perturb and Observe Algorithm]]>
The photovoltaic solar energy becomes more and more one of the most abundant and an alternative source of electric energy. But its efficiency is very low. For this reason, several Maximum Power Point Tracking algorithms are used to track de maximum power. This paper proposes a modified Perturb and Observe (P&O) algorithm using a boost chopper. That algorithm was implemented under Matlab/Simulink/Simpowersystems/Simelectronics platform. Results obtained showed that the proposed algorithm gives better results compared to the conventional P&O algorithm. In fact, the extracted power’s ripple factor using the conventional P&O method varies from 3.35 % to 5.30 %. Whereas the extracted power’s ripple factor using the 'modified P&O' varies from 1.41 % to 2.86 %.]]>
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var str = 'Taïssala, Awe';
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]]>
var options = {
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var str = 'Djongyang, Noël';
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]]>
var options = {
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};
var str = 'Tom, Ahmat';
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]]>
var options = {
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var str = 'Nicodem, Nisso';
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]]>
Journal of Renewable Energies; Vol. 21 No. 4 (2018): Volume 21 (Regular); 575 - 591]]>
Journal of Renewable Energies; Vol. 21 No 4 (2018): Volume 21 (Regular); 575 - 591]]>
2716-8247]]>
1112-2242]]>
10.54966/jreen.v21i4]]>
Renewable Energy Development Center]]>
2023-10-12]]>
Copyright (c) 2021 Journal of Renewable Energies]]>
https://creativecommons.org/licenses/by-sa/4.0]]>
https://revue.cder.dz/index.php/rer/article/view/713/1160]]>
application/pdf]]>
eng]]>
info:eu-repo/semantics/article]]>
info:eu-repo/semantics/publishedVersion]]>
https://revue.cder.dz/index.php/rer/article/view/713]]>
10.54966/jreen.v21i4.713]]>
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var str = 'Valorisation des déchets organiques ménagers et les déjections bovines par la méthanisation';
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]]>
Anaerobic Digestion]]>
Household waste]]>
Cow dung]]>
Biogas]]>
energy]]>
La digestion anaérobie de la fraction organique des déchets ménagers est l’une des méthodes de traitement et de valorisation de ces déchets. En effet cette valorisation, offre la possibilité de combiner le traitement de ces déchets et la production d’une énergie renouvelable qui est le biogaz. Dans notre étude, nous avons contribué à l’étude de la production de biogaz à partir de la co-digestion de la fraction organique des déchets ménagers avec les déjections bovines. Les deux substrats ont été introduits dans le digesteur après un pré-mélange à raison de 5 % de déchets ménagers et 10 % de bouse de vache. La fermentation de cette expérimentation a été menée en mode batch (alimentation discontinue) tout en assurant l’anaérobiose avec maintien de la température dans la plage mésophile. Nous avons procédé à la mesure des paramètres de stabilité, tels que le pH, le potentiel d’oxydo-réduction et les acides gras volatils (AGV). Les valeurs de ces paramètres indiquent le bon déroulement du processus de digestion qui a permis la production d’une quantité évaluée à 870 ml de biogaz durant un temps d’opération de 45 jours et pour une masse de 1000 grammes de déchets.]]>
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var str = 'Saïdi-Boulahia, Amina';
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]]>
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var str = 'Abada, Sabah';
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var str = 'Saber, Meryem';
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]]>
Journal of Renewable Energies; Vol. 21 No. 4 (2018): Volume 21 (Regular); 537 - 543]]>
Journal of Renewable Energies; Vol. 21 No 4 (2018): Volume 21 (Regular); 537 - 543]]>
2716-8247]]>
1112-2242]]>
10.54966/jreen.v21i4]]>
Renewable Energy Development Center]]>
2023-10-12]]>
Copyright (c) 2021 Journal of Renewable Energies]]>
https://creativecommons.org/licenses/by-sa/4.0]]>
https://revue.cder.dz/index.php/rer/article/view/712/1159]]>
application/pdf]]>
eng]]>
info:eu-repo/semantics/article]]>
info:eu-repo/semantics/publishedVersion]]>
https://revue.cder.dz/index.php/rer/article/view/712]]>
10.54966/jreen.v21i4.712]]>
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var str = 'Effet d’un dissipateur de chaleur sur le refroidissement des composants électroniques';
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]]>
Ailette]]>
Dissipateur de chaleur]]>
Simulation]]>
Dans cet article, l’influence du nombre et la hauteur des ailettes d’un dissipateur de chaleur sur le transfert thermique par convection mixte dans une cavité renfermant des composants électroniques a été simulé numériquement. Le nombre d’ailettes dans le dissipateur de chaleur varie entre 4 et 10. La hauteur des ailettes est prise de 0.01 m jusqu’à 0.035 m. Comme composant électronique, on a considéré un microprocesseur d’une puissance de 20 W et placé en dessous du dissipateur de chaleur avec l’hypothèse que les autres composants sont adiabatiques. Le fluide étudié est soufflé et pulsé dans la cavité par un ventilateur. Le nombre de Prandtl est supposé constant et égal à 0.71. La simulation en question, a été menée en exploitant un logiciel sous environnement IAO avec un solveur en éléments finis. Les résultats dégagés suite à cette simulation montrent que, l’augmentation du nombre et la hauteur des chicanes améliore la quantité de chaleur dégagée par le dissipateur.]]>
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var str = 'Belmiloud, Mohamed Amine';
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]]>
Journal of Renewable Energies; Vol. 21 No. 4 (2018): Volume 21 (Regular); 529 - 536]]>
Journal of Renewable Energies; Vol. 21 No 4 (2018): Volume 21 (Regular); 529 - 536]]>
2716-8247]]>
1112-2242]]>
10.54966/jreen.v21i4]]>
Renewable Energy Development Center]]>
2023-10-12]]>
Copyright (c) 2021 Journal of Renewable Energies]]>
https://creativecommons.org/licenses/by-sa/4.0]]>
https://revue.cder.dz/index.php/rer/article/view/711/1158]]>
application/pdf]]>
eng]]>
info:eu-repo/semantics/article]]>
info:eu-repo/semantics/publishedVersion]]>
https://revue.cder.dz/index.php/rer/article/view/711]]>
10.54966/jreen.v21i4.711]]>