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A Direct Power Control of the PWM Rectifier for SEIG Feeding Resistive Load in Wind Energy Systems 风力发电系统中SEIG馈电电阻负载的PWM整流器的直接功率控制
2020 5th International Conference on Renewable Energies for Developing Countries (REDEC) Pub Date : 2020-06-01 DOI: 10.1109/REDEC49234.2020.9163894
Fadi Ouafia, Abbou Ahmed
{"title":"A Direct Power Control of the PWM Rectifier for SEIG Feeding Resistive Load in Wind Energy Systems","authors":"Fadi Ouafia, Abbou Ahmed","doi":"10.1109/REDEC49234.2020.9163894","DOIUrl":"https://doi.org/10.1109/REDEC49234.2020.9163894","url":null,"abstract":"In this paper, a control technique is elaborated for a stand-alone induction generator (IG) driven by a wind turbine for use in rural areas. The generator is excited by a bank of capacitor. While the buildup of the voltage starts, there is a variation in the linkage flux of the IG, which lead to the variation of the magnetizing inductance due to saturation of the core. The main goal of this paper consists of regulating the DC bus of an AC/DC converter using a control strategy calling DPC or direct power control, this technique consists of choosing control vector from a switching table based on instantaneous active and reactive power error and the line voltage position.","PeriodicalId":371125,"journal":{"name":"2020 5th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"1 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":"130949028","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: 2
Thermal Performance of Solar Tower Using Air as Heat Transfer Fluid under MENA Region Climate MENA地区气候条件下以空气为传热流体的太阳能塔热性能研究
2020 5th International Conference on Renewable Energies for Developing Countries (REDEC) Pub Date : 2020-06-01 DOI: 10.1109/redec49234.2020.9163893
S. Hassani, H. A. L. Ouali, Benyounes Raillani, M. Moussaoui, A. Mezrhab, S. Amraqui
{"title":"Thermal Performance of Solar Tower Using Air as Heat Transfer Fluid under MENA Region Climate","authors":"S. Hassani, H. A. L. Ouali, Benyounes Raillani, M. Moussaoui, A. Mezrhab, S. Amraqui","doi":"10.1109/redec49234.2020.9163893","DOIUrl":"https://doi.org/10.1109/redec49234.2020.9163893","url":null,"abstract":"Among all Concentrating Solar Power technologies available, the solar tower technology is one of the most interesting technology that attract researchers. This paper investigates the thermal performance of the central receiver using a numerical simulation, where the proposed solar power plant is based on the Brayton cycle with volumetric air receiver. The transient system simulation software (TRNSYS 16) was used to evaluate the performance of the solar tower plant. The system was carried out on different climatic conditions of the MENA region such as Bechar, Adrar (Algeria), Cairo (Egypt), Abu Dhabi (UAE), Tripoli (Libya), Tunisia (Tunis) and Baghdad (Iraq). The obtained results show that, for a volumetric receiver with aperture equal to 25m2, the temperature of the working fluid can reach 1080 °C during the plant operation which is considered high. In addition, the efficiency of the thermal receiver has been found around 88% due to the high operating temperature. The results of the analysis indicate that the higher solar intensity higher up the overall thermal efficiency.","PeriodicalId":371125,"journal":{"name":"2020 5th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"1 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":"124404297","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
An eco-friendly process for the preservation of natural nutritious sprouts 一个生态友好的过程，保存天然营养芽
2020 5th International Conference on Renewable Energies for Developing Countries (REDEC) Pub Date : 2020-06-01 DOI: 10.1109/REDEC49234.2020.9163874
Helga Francis, Espérance Debs, R. Maroun, N. Louka
{"title":"An eco-friendly process for the preservation of natural nutritious sprouts","authors":"Helga Francis, Espérance Debs, R. Maroun, N. Louka","doi":"10.1109/REDEC49234.2020.9163874","DOIUrl":"https://doi.org/10.1109/REDEC49234.2020.9163874","url":null,"abstract":"In an era where plants based and healthy diets are more adopted by the consumers and where the environment-friendly processes are are prevailing, preservation of nutritious natural sprouts by a time and energy saving treatment prompted us to conduct this study. Optimization of the germination of common wheat and Kamut grains was first presented. Reduced imbibition times of 3 and 5 hours were obtained for wheat and Kamut grains respectively with less water consumption. Then an optimal germination duration of 7 days was determined for both grains by monitoring the lipids, proteins, vitamins B2, B6, E and $beta$-carotene contents during germination. Afterwards these sprouts were treated by Intensification of Vaporization by Decompression to the Vacuum (IVDV) and hot air dried to a water content of 4%. The effect of this treatment on the nutritional content of the sprouts and their drying kinetics were then studied. IVDV was proved to preserve the vitamins content of sprouts while saving around 8 hours of hot air drying.","PeriodicalId":371125,"journal":{"name":"2020 5th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"36 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":"121356857","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: 1
A Novel MPPT Strategy with Only One Current Sensor Using Predictive Control Technique 基于预测控制技术的单电流传感器MPPT策略
2020 5th International Conference on Renewable Energies for Developing Countries (REDEC) Pub Date : 2020-06-01 DOI: 10.1109/REDEC49234.2020.9163846
Sana Sahbani, H. Mahmoudi, A. Hasnaoui, M. Kchikach, A. Redouane
{"title":"A Novel MPPT Strategy with Only One Current Sensor Using Predictive Control Technique","authors":"Sana Sahbani, H. Mahmoudi, A. Hasnaoui, M. Kchikach, A. Redouane","doi":"10.1109/REDEC49234.2020.9163846","DOIUrl":"https://doi.org/10.1109/REDEC49234.2020.9163846","url":null,"abstract":"The cost and efficiency of a photovoltaic (PV) system are related to the maximum power point tracking (MPPT) technique used, this has led to a continual development and improvement of their control systems. The most preponderant techniques usually require at least a couple of current and voltage sensors and a relatively complex control strategy. In order to reduce the overall cost and control difficulty, this paper presents a novel MPPT controller with reduced number of sensors through predictive control technique The proposed MPPT controller is based on a checking algorithm using one current sensor that senses only the load current and allows an instantaneous interaction between the power delivered by the PV and the power needed by load The developed technique has been incorporated into a PV model built in Matlab/Simulink adapted to the real characteristics of the PV array used in experiment. The simulation results proves the PV system efficiency and its enabling to optimize system performance under various predicted current. The algorithm has been implemented using FPGA card and the obtained results in the experiments validate the efficiency of the proposed controller algorithm.","PeriodicalId":371125,"journal":{"name":"2020 5th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"1 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":"126665615","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
A Low-Cost Elliptical Triple-Band Antenna for RF Energy Harvesting Applications 用于射频能量采集的低成本椭圆三波段天线
2020 5th International Conference on Renewable Energies for Developing Countries (REDEC) Pub Date : 2020-06-01 DOI: 10.1109/REDEC49234.2020.9163859
Tafekirt Hamza, Bouajaj Adel, Britel Mohammed Reda
{"title":"A Low-Cost Elliptical Triple-Band Antenna for RF Energy Harvesting Applications","authors":"Tafekirt Hamza, Bouajaj Adel, Britel Mohammed Reda","doi":"10.1109/REDEC49234.2020.9163859","DOIUrl":"https://doi.org/10.1109/REDEC49234.2020.9163859","url":null,"abstract":"This paper presents the design, optimization, simulation and fabrication of a novel single layer, single-feed triple-band elliptical microstrip patch antenna. The proposed antenna effectively operates at three frequency bands to harvest RF energy from cellular network frequency bands (900 MHz and 1800 MHz) and Wi-Fi sources (2.45 GHz) available in our surrounding ambience. The antenna is printed on a low cost commercial FR4 substrate, has a compact size, and easy fabricate. The overall dimensions of this multiband antenna unit are 95 mm $times 95$ mm $times 1.6$ mm. The simulations and experimental results of the proposed antenna are presented, and a good agreement is observed between the simulated and measured results.","PeriodicalId":371125,"journal":{"name":"2020 5th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"8 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":"123355669","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: 2
Voltage and Congestion Control in Active Distribution Networks Using Fast Sensitivity Analysis 基于快速灵敏度分析的有源配电网电压与拥塞控制
2020 5th International Conference on Renewable Energies for Developing Countries (REDEC) Pub Date : 2020-06-01 DOI: 10.1109/REDEC49234.2020.9163873
Khaled Alzaareer, M. Saad, H. Mehrjerdi, C. El‐Bayeh, D. Asber, S. Lefebvre
{"title":"Voltage and Congestion Control in Active Distribution Networks Using Fast Sensitivity Analysis","authors":"Khaled Alzaareer, M. Saad, H. Mehrjerdi, C. El‐Bayeh, D. Asber, S. Lefebvre","doi":"10.1109/REDEC49234.2020.9163873","DOIUrl":"https://doi.org/10.1109/REDEC49234.2020.9163873","url":null,"abstract":"Active distribution networks will meet new challenges in voltage and congestion control due to the high penetration levels of distributed generations (DG). Optimal voltage control techniques are mainly based on the relation between the network voltages and control variables (i.e. power injection). Thus, in this paper, a centralized real time scheme using a fast method for computing the sensitivity coefficients is presented to control congestion and voltage problems. The sensitivity coefficients of network voltages as well as the branch line currents are obtained via direct analytical derivation. A 11KV, 75-bus distribution system including several DGs is used to validate the proposed method. Simulation results show that the proposed method is able to maintain the network voltages and line currents within acceptable limits.","PeriodicalId":371125,"journal":{"name":"2020 5th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"14 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":"132347842","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: 2
Sliding Mode Current Control with Luenberger Observer applied to a Three Phase Induction Motor Luenberger观测器在三相异步电动机上的滑模电流控制
2020 5th International Conference on Renewable Energies for Developing Countries (REDEC) Pub Date : 2020-06-01 DOI: 10.1109/REDEC49234.2020.9163602
E. Paiva, L. Delorme, M. Gomez-Redondo, E. Cristaldo, J. Rodas, Y. Kali, R. Gregor
{"title":"Sliding Mode Current Control with Luenberger Observer applied to a Three Phase Induction Motor","authors":"E. Paiva, L. Delorme, M. Gomez-Redondo, E. Cristaldo, J. Rodas, Y. Kali, R. Gregor","doi":"10.1109/REDEC49234.2020.9163602","DOIUrl":"https://doi.org/10.1109/REDEC49234.2020.9163602","url":null,"abstract":"In this paper, the problem of controlling three-phase induction motors with unmeasurable states is tackled. To that end, a finite-time robust nonlinear current control is applied. The controller employed is the first order sliding mode with exponential reaching law variant. Moreover, in order to estimate some variables that are not measurable, such as the rotor current, a state observer based on Luenberger observer is implemented. Simulation results show a good tracking of the desired reference, given that there exist some dynamics which were not modeled and there are fast changes in the reference.","PeriodicalId":371125,"journal":{"name":"2020 5th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"41 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":"133016036","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
Impact of Energy Storage System on Frequency Control of an Islanded Microgrid 储能系统对孤岛微电网频率控制的影响
2020 5th International Conference on Renewable Energies for Developing Countries (REDEC) Pub Date : 2020-06-01 DOI: 10.1109/REDEC49234.2020.9163849
R. Rabeh, M. Ferfral, A. Ezbakhe
{"title":"Impact of Energy Storage System on Frequency Control of an Islanded Microgrid","authors":"R. Rabeh, M. Ferfral, A. Ezbakhe","doi":"10.1109/REDEC49234.2020.9163849","DOIUrl":"https://doi.org/10.1109/REDEC49234.2020.9163849","url":null,"abstract":"Microgrids (MG) are a new trend on electrical grids. Despite their dependence on intermittent renewable resources, they provide harmful greenhouse gas emissions to our environment and may present a long-term solution to meet future energy needs with sustainable energy resources (e.g. solar example, wind turbine). Initially, the MG adopted is a hybrid system with non-controllable sources as renewable sources, an energy storage system and controllable sources (e.g. diesel generator (DG), fuel cell (FC), micro turbine (MT)) to ensure MG reliability, transparency and efficiency. It’s also recommended to maintain the frequency as part of the quality of electrical energy affected and disturbed by the intermittence of sources and loads that cannot be controlled depending on conditions weather (for example, solar irradiation, wind speed, temperature) and human behavior (load). This article presents a study of the impact of the storage system and the effect of the uncertainties of the MG system and the frequency of noise recovery by applying a secondary control based on a PI control set by combined GATLBO. A simulated isolated MG is tested in scenarios to test the approach adopted to design the PI parameters in order to avoid frequency fluctuation in the different case studies.","PeriodicalId":371125,"journal":{"name":"2020 5th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"54 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":"129408319","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: 1
A Novel MPPT Tactic for PV Systems with Fast-Converging Speed and Zero Oscillation 一种快速收敛零振荡光伏系统的MPPT策略
2020 5th International Conference on Renewable Energies for Developing Countries (REDEC) Pub Date : 2020-06-01 DOI: 10.1109/redec49234.2020.9163606
Abdelkhalek Chellakhi, El Beid Said, Abouelmahjoub Younes
{"title":"A Novel MPPT Tactic for PV Systems with Fast-Converging Speed and Zero Oscillation","authors":"Abdelkhalek Chellakhi, El Beid Said, Abouelmahjoub Younes","doi":"10.1109/redec49234.2020.9163606","DOIUrl":"https://doi.org/10.1109/redec49234.2020.9163606","url":null,"abstract":"This paper proposes a novel algorithm for maximum power point tracking (MPPT) in photovoltaic panel sourced boost converter. The novel MPPT tactic has a high convergence speed and zero oscillation around the MPP under steady state operation, and high tracking speed in response to rapid changing of irradiance. Furthermore, it improves the tracking accuracy, without increase the implementation complexity. The proposed technique has been simulated in Matlab/Simulink environment and compared with some other MPPT techniques, such as Perturbed and observed (P & O), Increment of Conductance (INC) and fuzzy logic (FLC).","PeriodicalId":371125,"journal":{"name":"2020 5th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"13 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":"133916951","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: 7
Thermal performance and adherence of local materials to the Moroccan Building Code requirements 热性能和当地材料的遵守摩洛哥建筑规范的要求
2020 5th International Conference on Renewable Energies for Developing Countries (REDEC) Pub Date : 2020-06-01 DOI: 10.1109/redec49234.2020.9163600
Hicham Mastouri, H. Bahi, H. Radoine, B. Benhamou
{"title":"Thermal performance and adherence of local materials to the Moroccan Building Code requirements","authors":"Hicham Mastouri, H. Bahi, H. Radoine, B. Benhamou","doi":"10.1109/redec49234.2020.9163600","DOIUrl":"https://doi.org/10.1109/redec49234.2020.9163600","url":null,"abstract":"The building must be characterized by a good architectural design, adequate construction materials and passive systems especially the ones adapted to local climate. There are many examples of systems and installations that stand as solutions, from passive techniques and local materials to secure ultimate indoor conditions as it is contended by with the Moroccan building code requirements, and thus tuning the energy use wisely. Therefore, dynamic simulation study was conducted to examine the annual thermal loads for heating and cooling for configurations of the studied building within the set points of NM ISO 7730 was conducted, this study carried out through a comparison of the established thermal loads prescribed by RTCM (Moroccan building code). Results shows a clear reduction of thermal loads performed by the building configurations which combines the three studied passive techniques. These passive components perform up to 63% reduction of the annual thermal load and shows a neat adherence to the performance-based requirements of RTCM.","PeriodicalId":371125,"journal":{"name":"2020 5th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"52 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":"116222002","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: 2
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