2019 7th International Renewable and Sustainable Energy Conference (IRSEC)最新文献

{"title":"P-doped Hard Carbon as Anode Material for Sodium-ion Batteries","authors":"C. Hakim, H. D. Asfaw, M. Dahbi, D. Brandell, K. Edström, R. Younesi, I. Saadoune","doi":"10.1109/IRSEC48032.2019.9078196","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078196","url":null,"abstract":"The P-doped hard carbon was synthesized using carboxymethyl cellulose and phosphoric acid as the carbon and phosphorus precursors, respectively. The X-ray photoelectron spectroscopy (XPS) analysis reveals that the doped phosphorus atoms can incorporate into the carbon framework and most of them are connecting with carbon atoms to form P-C bonds. When used as anodes in sodium ion batteries, the obtained un-doped and P-doped hard carbon show poor electrochemical performances. The results indicate further optimization of the synthesis process is required. However, this approach opens up new possibilities to improve electrochemical performance of hard carbon anodes.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"10 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90776267","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}

{"title":"Commercial Building Energy Management Design for HVAC system Based on Fuzzy Logic","authors":"Meryem Hamidi, O. Bouattane","doi":"10.1109/IRSEC48032.2019.9078235","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078235","url":null,"abstract":"In the last decades, the Fuzzy Logic Controller (FLC) or Fuzzy Logic Algorithm (FLA) has been applied in different areas such as robotics, transportation, energy management, renewable energy, buildings, and other fields. Because of the energy demand that does not stop growing, commercial buildings have the largest share of energy consumption among several sectors. In this paper; the aim of integrating the energy Management System (EMS) is to reduce the consumption in the building target. This Energy Management System is based on the Fuzzy Logic Controller.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"5 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91507001","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}

{"title":"Implementation of an Intelligent System for Remote Control of Decentralized photovoltaic Sources using the Internet of Things Infrastructure","authors":"Chaimae Zedak, Abdelaziz Belfqih, A. Lekbich, Jamal Boukherouaa, Abdeljalil Laamimi","doi":"10.1109/IRSEC48032.2019.9078247","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078247","url":null,"abstract":"With the strong integration of photovoltaic panels in the electricity grid and its complexity, the need to manage and control it in the presence of these renewable entities is essential. For an interoperable, digital and decentralized network, it is necessary to integrate the concept of the Internet of Things (IoT) to enable the monitoring and control of these photovoltaic systems and to make them intelligent. This article presents a photovoltaic panels control system, which we realized in our research laboratory at the National Higher School of Electricity and Mechanics ENSEM. This system makes it possible to securely acquire data from current, voltage and temperature sensors and display them on a Human-Machine Interface using the Internet of Things. It also makes it possible to send commands to the circuit breaker responsible for connecting the panel to the network. Once tested for a single photovoltaic panel, we have developed a simulator for an IEEE 33 bus test network where four panels have been integrated in a decentralized way to monitor and control these panels in real time.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"54 4 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91541389","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}

{"title":"Magnetoelastic Properties of the MnRuxRh1-x As system: Crystal, Electronic Structure and Magnetocaloric Effect Analyses","authors":"D. Szymański, R. Zach, W. Chajec, R. Duraj, J. Toboła, S. Baran, M. Michalec, S. Hai-Klifa, D. Fruchart","doi":"10.1109/IRSEC48032.2019.9078211","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078211","url":null,"abstract":"The crystal structure of MnRu<inf>x</inf>Rh<inf>1-x</inf>As system belongs to the hexagonal Fe<inf>2</inf>P-type structure (SG: P 6 2m). Mn atoms locate at pyramidal (3g) sites, Ru and Rh atoms occupy tetrahedral (3f) sites and As atoms occupy 1b and 2c positions. Systematic XRD data collected in the 80 - 550 K temperature range and crystal structure refinements were performed for 0.05 < x < 1. From the thermal behavior of both the cell parameters and the atomic positions, a global analysis of the magneto-elastic characteristics was made. In this report we present the magnetocaloric characteristics (MCE), addressed to the Mn magnetic ordering. Both conventional (0.8<x<1) and negative MCE (0 < x < 0.75) were pointed out. Besides to analyze the magnetization behavior of the compounds for 0.8 < x <1, a mean-field approach was applied successfully. Finally, relationships were established between experimental and theoretical values of the magnetic moments and the different types of magnetic couplings.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"33 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89837320","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}

{"title":"Modeling of Dust Deposition Impact on PV/T Hybrid Collector Performances","authors":"C. E. Fouas, O. E. Manssouri, B. Hajji, L. Bouselham, G. Marco Tina, A. Gagliano","doi":"10.1109/IRSEC48032.2019.9078255","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078255","url":null,"abstract":"Dust deposition on the front of photovoltaic /thermal collectors presents greatest issues in some regions (desertic regions). It's considered as key parameter affecting much more collector's performances. In the present work, a particular attention has been paid to dust deposition effect on the electrical and thermal performances of photovoltaic /thermal collector PV/T.A model of sheet-and-tubes PV/ T collector is developed and validated with experimental data available in literature. The obtained results show that the dust significantly affects the electrical and thermal efficiencies. An increase of dust deposition of 8g/m2 causes an electrical and a thermal output reduction respectively of 28% and 21%. Better electrical and thermal performances have been noted for PV/ T without dust. Moreover, a good agreement has been observed between obtained results and the presented results available in literature.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"20 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86207136","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}

{"title":"Modeling and Control of a DFIG for wind Turbine Conversion System using Back-to-back PWM Converters","authors":"Abdelouhid El-Jalyly, Mounir Derri, Touria Haidi, Abderrahmane Janyene","doi":"10.1109/IRSEC48032.2019.9078332","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078332","url":null,"abstract":"In this work we study the modeling and control strategy of the variable speed wind turbine based on doubly feed induction generator (DFIG) connected to the grid, we have used the maximum power point tracking (MPPT) technique to generate the reference torque, which will be exploited in the control strategy for maximizing the power converted by the turbine. The proposed control strategy is focused on the vector oriented control (VOC) using a PI regulators for both the rotor side converter (RSC) and the grid side converter (GSC), which allows to control the active and reactive powers generated by the DFIG in an independent manner.The performance and effectiveness of proposed control strategy are verified by simulation under variable weather conditions using Matlab-Simulink environment for a 2.4 MW turbine. The results demonstrate that the proposed techniques provide good control performances.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"64 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84412971","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}

{"title":"Application and Comparison of Different Control Strategies of Induction Generator in Wind Energy Conversion System","authors":"R. Abdelli, Djamila Rekioua, T. Rekioua, A. Bouzida","doi":"10.1109/IRSEC48032.2019.9078248","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078248","url":null,"abstract":"This article presents an application of different control strategies to highlight the performances of an induction generator in a wind system. First, a direct torque control (DTC) method was applied and then, to have a constant frequency and a low THD in the network current, a modulated hysteresis torque control (MHDTC) was used. To verify the high performances of this method, a comparison with two other control strategies based on field oriented control theory (FOC) has been made. The first one used a conventional PI controller and the second one used a Fuzzy Logic controller (FOC+FLC). Simulation results obtained using Matlab/Simulink, under a variable wind profile using the four control strategies, are presented and compared taking into account the electromagnetic torque ripple, the power factor, the current distortion, the frequency, losses and the efficiency.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"14 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79269224","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}

{"title":"Damage Analysis of Welded Rectangular Profiles for Electric Vehicles Utilization under Variable and Constant Amplitude Loads","authors":"I. Amarir, H. Mounir, A. Marjani","doi":"10.1109/IRSEC48032.2019.9078152","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078152","url":null,"abstract":"For several decades, the most automotive structures used, are in the form of welded structure especially, in the case of electric vehicle utilization, which can be subjected to a constant or a complex variable amplitude load. For that reason, this type of design requires a careful fatigue analysis in order to predict the fatigue life assessment. In this paper, damage study were discussed using a finite element software through the example of welded rectangular profiles under damped loads while respecting the major parameters affecting the fatigue strength as size of geometry, choice of material, structural environment and temperature. Then, the results indicated the effect of constant and non constant amplitude load on the fatigue life estimated using the stress life approach and thus the concept of damage through Miner's Rule. Finally, the Rainflow matrix chart for cycle counting is given and it is only applicable for variable amplitude loading.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"192 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80978767","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}

{"title":"Artificial Neural Network based Controller for Energy Management in a Solar Home in Algeria","authors":"F. Chekired, S. Berkane, A. Meflah, A. Mahrane","doi":"10.1109/IRSEC48032.2019.9078172","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078172","url":null,"abstract":"This work presents an Artificial Neural Network (ANN) Algorithm using for Energy Management devoted to fulfill the energy demand of an on grid PV home with a backup located in Bou-Ismail (Algeria). To satisfy energy needs of the house, the energy management strategy used relies mainly on a local PV production. The efficiency of the proposed algorithm has been evaluated for a favorable week in July 2018 and an unfavorable week in January 2018 basing on the weather conditions of the Bou- Ismail location. The results show that the proposed ANN algorithm can reduce the energy consumption of the home without affecting customer comforts.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"16 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79653790","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}

{"title":"Acacia Tortilis Encroacher Bush as a Bioenergy Source","authors":"G. Charis, G. Danha, E. Muzenda, N. Nkosi","doi":"10.1109/IRSEC48032.2019.9078221","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078221","url":null,"abstract":"Invasive and encroaching (IE) species have posed a threat to biodiversity in ecosystems, rangeland productivity, groundwater generation, the environment and economy in savannah ecosystems like Botswana and Namibia. While de-bushing of large diameter stocks have yielded huge economic returns for countries like Namibia through a lucrative charcoal and fuelwood or chips, smaller diameter ones have little economic value, especially the shrubs that encroach space in cities and towns. The goal of this study is to explore possible means of deriving economic value from the encroachers, which are currently disadvantaging Botswana through reduced rangeland productivity and de-bushing costs. Pyrolysis has received attention as a potentially low cost thermochemical method that can efficiently utilize such lignocellulosic residues. The primary goal is to use the bio-oil in stationary engine applications for power generation, especially in remote areas of sparsely populated Botswana, where it has been deemed uneconomic to connect them to the national grid. Characterization of encroacher bush indicated it could be a good feedstock for pyrolytic conversion due to the relatively high volatile matter (76.51 %), moderately low ash content (3.90%) and high gross calorific value (17.3 MJ/kg). The A. tortilis was then pyrolyzed under varying overall and condenser temperatures to establish the optimum operating parameters. The obtained bio-oil was characterized, comparing its properties to conventional fuels. The optimum pyrolysis temperature was found at 550°C, while the optimum primary condenser temperature, with the best quality oil (36.809MJ/kg), was at 125°C. The viscosity of this oil was estimated to be 24.024 mPa.s using the other characterized samples. Gas chromatography was also carried out on the oil samples and the compounds with the highest mass presence were catalogued. It is concluded that the bio-oil could be used in moderate-slow engines with moderate upgrading, while it needs to be diluted with a solvent then blended with a diesel for use in fast diesel engines. It is also important to establish the particulate composition and flash point of the bio-oil, though these tests were not carried out in this study.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"492 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82671582","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}