2020 5th International Conference on Renewable Energies for Developing Countries (REDEC)最新文献

Improve Prediction Accuracy of Electrical Consumption Adjusted with Demand Response Programs 提高用电需求响应程序调整预测的准确性

2020 5th International Conference on Renewable Energies for Developing Countries (REDEC) Pub Date : 2020-06-01 DOI: 10.1109/redec49234.2020.9163906

Charles Ibrahim, I. Mougharbel, H. Kanaan, Nivine Abou Daher, S. Georges, M. Saad

引用次数: 2

Storage efficiency of paraffin-LDPE-MWCNT phase change material for industrial building applications 工业建筑用石蜡- ldpe - mwcnt相变材料的储存效率

2020 5th International Conference on Renewable Energies for Developing Countries (REDEC) Pub Date : 2020-06-01 DOI: 10.1109/REDEC49234.2020.9163856

Yasser Harmen, Y. Chhiti, F. Alaoui, F. Bentiss, Mohamed Elkhouakhi, L. Deshayes, C. Jama, S. Duquesne, M. Bensitel

{"title":"Storage efficiency of paraffin-LDPE-MWCNT phase change material for industrial building applications","authors":"Yasser Harmen, Y. Chhiti, F. Alaoui, F. Bentiss, Mohamed Elkhouakhi, L. Deshayes, C. Jama, S. Duquesne, M. Bensitel","doi":"10.1109/REDEC49234.2020.9163856","DOIUrl":"https://doi.org/10.1109/REDEC49234.2020.9163856","url":null,"abstract":"Passive latent energy storage technologies with Phase Change Materials (PCM) provide a potential solution to reduce energy demand and regulate thermal comfort in occupied buildings. However, leakage of liquid PCM and low thermal conductivity limit the PCM building applications. In this context, the objective of this study is to develop a new shape stable PCM enhanced by carbon-based nanoparticles. The paraffin, Low-Density Polythene (LDPE) and Multi-Walled Carbon Nano-Tube (MWCNT) are used as PCM, supporting matrix and thermal conductivity enhancer, respectively. The PCM composites with different ratios were prepared by melt blending method, using a parallel co-rotating twin-screw micro-extruder. A series of experimental tests were achieved. Thermophysical and chemical analyses (Modulated Differential Scanning Calorimetry (MDSC), Thermogravimetric Analysis (TGA), thermal conductivity, Fourier Transform Infrared Spectroscopy (FTIR)) were carried out to characterize the raw materials and the prepared PCM composites, to optimize the energetic and phenomenological behaviors of samples. The results indicate a good chemical and physical compatibility of the prepared samples. Besides, the LDPE maintains the molten paraffin in compact shape during the solid-liquid transition. Thus, paraffin-LDPE-MWCNT with 70-29-1 wt.% exhibit the best thermal properties with a latent heat of 93 J/g. 1 wt.% of MWCNT improves the thermal conductivity of paraffin-LDPE by 28%. The results of this study demonstrate a significant potential of the prepared shape stable PCM to improve the thermal inertia of construction materials and thermal comfort inside buildings.","PeriodicalId":371125,"journal":{"name":"2020 5th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116097294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Improving the Quality of Intermittent Wind Power and its Harvest for Steam Power Plant Operation on Power Systems 提高间歇风力发电质量及其在电力系统中用于蒸汽电厂运行的收获

2020 5th International Conference on Renewable Energies for Developing Countries (REDEC) Pub Date : 2020-06-01 DOI: 10.1109/REDEC49234.2020.9163871

Ali Hassan, Y. Hamam, J. Munda

引用次数: 0

Thermo-chemical behavior of biomass, coal, municipal solid wastes and their mixtures 生物质、煤、城市固体废物及其混合物的热化学行为

2020 5th International Conference on Renewable Energies for Developing Countries (REDEC) Pub Date : 2020-06-01 DOI: 10.1109/REDEC49234.2020.9163853

Imane Boumanchar, Y. Chhiti, F. Alaoui, Mohamed Elkhouakhi, L. Deshayes, F. Bentiss, C. Jama, M. Bensitel

引用次数: 0

REDEC 2020 Copyright Page REDEC 2020版权页面

2020 5th International Conference on Renewable Energies for Developing Countries (REDEC) Pub Date : 2020-06-01 DOI: 10.1109/redec49234.2020.9163884

引用次数: 0

DPC & DNPC Applied To Wind Energy Converter System DPC和DNPC在风能变流器系统中的应用

2020 5th International Conference on Renewable Energies for Developing Countries (REDEC) Pub Date : 2020-06-01 DOI: 10.1109/redec49234.2020.9163898

Hala Alami Aroussi, ElMostafa Ziani, Manale Bouderbala, B. Bossoufi

{"title":"DPC & DNPC Applied To Wind Energy Converter System","authors":"Hala Alami Aroussi, ElMostafa Ziani, Manale Bouderbala, B. Bossoufi","doi":"10.1109/redec49234.2020.9163898","DOIUrl":"https://doi.org/10.1109/redec49234.2020.9163898","url":null,"abstract":"This paper presents a comparison between an improved direct power control using hysteresis and artificial neural regulators applied to a wind energy conversion system (WECS) using a doubly fed induction machine (DFIM) as a generator. We assume that the direct power control (DPC) has numerous advantages such as the easy implementation that permits a perfect decoupling between active and reactive powers, as well as the good performance at transient and steady state without PI controller and rotating coordinate transformations. To introduce the WECS adopted, the wind turbine modelling and the dynamic model of the asynchronous generator is presented. Subsequently, a detailed explanation of the controls is spreading out in addition of the principle of adjusting the active and reactive powers according to the wind profile. Moreover, the estimation method of the two variables controlled will be presented in addition to the switching table used for the multilevel inverter. Finally, the system will be tested using an asynchronous machine of 1.5 KW under Matlab / Simulink to demonstrate the effectiveness of these controls.","PeriodicalId":371125,"journal":{"name":"2020 5th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126474223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Optimization of peanuts’ defatting using Ired-Irrad®, a newly-patented green and low-cost technology 利用新专利的绿色低成本技术red- irrad®优化花生脱脂

2020 5th International Conference on Renewable Energies for Developing Countries (REDEC) Pub Date : 2020-06-01 DOI: 10.1109/REDEC49234.2020.9163870

H. Rajha, J. Azoury, Espérance Debs, Elie El Azzi, N. Louka

引用次数: 0

Study of Elastic Behaviour of Bolted Sandwich Beam With Unidirectional Carbon Fiber Skins 单向碳纤维皮夹芯梁锚固弹性性能研究

2020 5th International Conference on Renewable Energies for Developing Countries (REDEC) Pub Date : 2020-06-01 DOI: 10.1109/redec49234.2020.9163863

Ounss Soukaina, Mounir Hamid, E. Abdellatif

{"title":"Study of Elastic Behaviour of Bolted Sandwich Beam With Unidirectional Carbon Fiber Skins","authors":"Ounss Soukaina, Mounir Hamid, E. Abdellatif","doi":"10.1109/redec49234.2020.9163863","DOIUrl":"https://doi.org/10.1109/redec49234.2020.9163863","url":null,"abstract":"Sandwich materials with reinforced composite skins become currently a relevant choice to obtain both strength and lightweight structures because of their optimal mechanical performances provided by having just a moderate volume ratio of rigid fibers. Therefore, composite sandwiches are strongly recommended for wind turbines blades that need lightweight materials to achieve optimal power efficiency with an increased size. In this paper, a bolted sandwich beam used for wind turbines with skins reinforced by unidirectional carbon fibers is studied through realizing a numerical simulation under commercial software in order to evaluate an analytical model proposed to predict tensile elastic modulus. For that, several simulations of tensile tests were performed for many samples of sandwich beams and their composite skins with a fiber volume fraction of 15% and two reinforcement orientations that are 0° and 45°. The study results approved the analytical approach especially for sandwich specimens where elastic core absorbs shear energy and composite skins influence sandwich rigidity that equals to 4.6 Gpa for the case of a reinforcement orientation of 45° and 11.8 Gpa for 0° fibers inclination. Then, the application of various bolt preloads causes a tensile modulus drop because of concentrations of constraints which requires a suitable selection of fibers angle, tensile load and bolt material to conserve beam rigidity.","PeriodicalId":371125,"journal":{"name":"2020 5th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"143 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134574965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Robust Control of a 6-Phase Induction Generator for Variable Speed Wind Energy Conversion System 变速风能转换系统中6相感应发电机的鲁棒控制

2020 5th International Conference on Renewable Energies for Developing Countries (REDEC) Pub Date : 2020-06-01 DOI: 10.1109/redec49234.2020.9163835

Y. Kali, M. Saad, J. Rodas, I. Mougharbel, K. Benjelloun

{"title":"Robust Control of a 6-Phase Induction Generator for Variable Speed Wind Energy Conversion System","authors":"Y. Kali, M. Saad, J. Rodas, I. Mougharbel, K. Benjelloun","doi":"10.1109/redec49234.2020.9163835","DOIUrl":"https://doi.org/10.1109/redec49234.2020.9163835","url":null,"abstract":"Multiphase induction generators are gaining popularity in wind energy systems for their robustness, reliability and fault-tolerant behavior when compared to the famous three-phase ones. This work proposes an advanced robust nonlinear control strategy for a multiphase induction generator in a variable speed wind energy conversion system. The considered structure in this paper consists of a six-phase induction generator and two conventional three-phase two-level voltage source converters. The stator currents of the structure are regulated using the proposed method that consists of a time delay estimation-based modified super-twisting. On one hand, and a proportional-integral regulates the speed in an outer control loop. On the other hand, the proposed method regulates the stator currents in an inner control loop. The stability analysis of the closed-loop error dynamics is proved using a quadratic Lyapunov function. Finally, numerical simulations have been carried out on a model of a real six-phase induction generator to show the good features of the designed method.","PeriodicalId":371125,"journal":{"name":"2020 5th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131652861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Collective demand side management in smart grids 智能电网的集体需求侧管理

2020 5th International Conference on Renewable Energies for Developing Countries (REDEC) Pub Date : 2020-06-01 DOI: 10.1109/REDEC49234.2020.9163903

Rajaa Naji El Idrissi, M. Ouassaid, M. Maaroufi

引用次数: 2