3rd International Symposium on Environmental Friendly Energies and Applications (EFEA)最新文献_第5页

An alternative arrangement to triple-junction devices for reduced temperature effect and enhanced spectrum coverage 一种替代三结器件的布置，用于降低温度效应和增强频谱覆盖

3rd International Symposium on Environmental Friendly Energies and Applications (EFEA) Pub Date : 2014-11-01 DOI: 10.1109/EFEA.2014.7059992

A. Mokri, M. Emziane

{"title":"An alternative arrangement to triple-junction devices for reduced temperature effect and enhanced spectrum coverage","authors":"A. Mokri, M. Emziane","doi":"10.1109/EFEA.2014.7059992","DOIUrl":"https://doi.org/10.1109/EFEA.2014.7059992","url":null,"abstract":"The performance of triple-junction photovoltaic (PV) devices depends on the distribution of their energy bandgaps, the concentration ratio and operational temperature. The choice of materials for such devices is based on trading the optimum bandgap for the lattice parameter. Also, the sub-cells behave differently under light concentration and having them operating together under the same concentration may be another compromise on the overall performance. Furthermore, these devices are designed to operate under high concentration, and this results in having them functioning at high temperatures. In this work, we tackle these issues by proposing an alternative arrangement to triple-junction devices. We propose that the sun-beam is split by an optical filter and one part of the solar spectrum goes towards a single-junction AlGaAs cell while the other part is directed towards a double-junction cell where five different bandgap combinations are considered. In this work a simulation model is built to investigate the mutual effect of bandgap combination, light concentration and operational temperature on the overall performance of the alternative arrangement. The paper also compares these performance improvements with the optical losses associated with beam splitting.","PeriodicalId":129568,"journal":{"name":"3rd International Symposium on Environmental Friendly Energies and Applications (EFEA)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124530448","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

Sensitivity analysis of a solar thermophotovoltaic system with silicon thermal storage 硅蓄热太阳能热光伏系统的灵敏度分析

3rd International Symposium on Environmental Friendly Energies and Applications (EFEA) Pub Date : 2014-11-01 DOI: 10.1109/EFEA.2014.7059993

M. Emziane, M. Alhosani

引用次数: 3

An efficient method for flux weakening control of an induction motor drive system 一种有效的感应电机驱动系统磁链弱化控制方法

3rd International Symposium on Environmental Friendly Energies and Applications (EFEA) Pub Date : 2014-11-01 DOI: 10.1109/EFEA.2014.7059937

D. Stănescu, P. Nicolae, I. Bojoi

引用次数: 0

Control alghorithm of fuel cell hybrid source based on the flatness propriety 基于平整度特性的燃料电池混合电源控制算法

3rd International Symposium on Environmental Friendly Energies and Applications (EFEA) Pub Date : 2014-11-01 DOI: 10.1109/EFEA.2014.7059964

M. Benaouadj, A. Aboubou, M. Ayad, M. Becherif, M. Bahri

引用次数: 1

Comparison of two maximum power point trackers for photovoltaic systems using robust controllers 两种采用鲁棒控制器的光伏系统最大功率点跟踪器的比较

3rd International Symposium on Environmental Friendly Energies and Applications (EFEA) Pub Date : 2014-11-01 DOI: 10.1109/EFEA.2014.7059989

N. O. Cherchali, A. Morsli, M. S. Boucherit, L. Barazane, A. Tlemçani

{"title":"Comparison of two maximum power point trackers for photovoltaic systems using robust controllers","authors":"N. O. Cherchali, A. Morsli, M. S. Boucherit, L. Barazane, A. Tlemçani","doi":"10.1109/EFEA.2014.7059989","DOIUrl":"https://doi.org/10.1109/EFEA.2014.7059989","url":null,"abstract":"Photovoltaic power is widely used to supply isolated or unpopulated areas (lighting, pumping, etc.). Great advantage is that this source is inexhaustible, it offers great safety in use and it is clean. But the dynamic models used to describe a photovoltaic system are complicated and nonlinear and due to nonlinear I-V and P-V characteristics of photovoltaic generators, a maximum power point tracking technique (MPPT) is required to maximize the output power. In this paper, two online techniques of maximum power point tracking using robust controller for photovoltaic systems are proposed, the first technique use fuzzy logic controller (FLC) and the second use sliding mode controller (SMC) for photovoltaic systems. The two maximum power point tracking controllers receive the partial derivative of power as inputs, and the output is the duty cycle corresponding to maximum power. A Photovoltaic generator with Boost converter is developed using MATLAB / Simulink to verify the preferences of the proposed techniques. SMC technique provides a good tracking speed in fast changing irradiation and when the irradiation changes slowly or is constant the panel power of FLC technique presents a much smoother signal with less fluctuations.","PeriodicalId":129568,"journal":{"name":"3rd International Symposium on Environmental Friendly Energies and Applications (EFEA)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116466405","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

Stabilization of a DC electrical network by damping injection 用阻尼注入法稳定直流电网

3rd International Symposium on Environmental Friendly Energies and Applications (EFEA) Pub Date : 2014-11-01 DOI: 10.1109/EFEA.2014.7059990

Djawad Hamache, A. Fayaz, E. Godoy, C. Karimi

引用次数: 2

Design, optimization and feasibility study of parabolic trough solar thermal power plant with integrated thermal energy storage and backup system for Algerian conditions 阿尔及利亚条件下蓄热备一体化抛物槽式光热电站设计、优化及可行性研究

3rd International Symposium on Environmental Friendly Energies and Applications (EFEA) Pub Date : 2014-11-01 DOI: 10.1109/EFEA.2014.7059966

T. Boukelia, M. Mecibah, I. E. Meliche

引用次数: 5

Comparison of sliding mode control and fuzzy logic applied to wind turbine emulator 滑模控制与模糊逻辑在风力发电仿真器中的应用比较

3rd International Symposium on Environmental Friendly Energies and Applications (EFEA) Pub Date : 2014-11-01 DOI: 10.1109/EFEA.2014.7059974

Zine Souhila, M. Benyounès, Bouzid Mohamed Amine, Mihoub Youcef

引用次数: 2

SSTL I/O Standard based environment friendly energyl efficient ROM design on FPGA 基于FPGA的SSTL I/O标准环保节能ROM设计

3rd International Symposium on Environmental Friendly Energies and Applications (EFEA) Pub Date : 2014-11-01 DOI: 10.1109/EFEA.2014.7059947

M. Bansal, N. Bansal, R. Saini, B. Pandey, Lakshay Kalra, D. Hussain

{"title":"SSTL I/O Standard based environment friendly energyl efficient ROM design on FPGA","authors":"M. Bansal, N. Bansal, R. Saini, B. Pandey, Lakshay Kalra, D. Hussain","doi":"10.1109/EFEA.2014.7059947","DOIUrl":"https://doi.org/10.1109/EFEA.2014.7059947","url":null,"abstract":"Stub Series Terminated Logic (SSTL) is an Input/output standard. It is used to match the impedance of line, port and device of our design under consideration. Therefore, selection of energy efficient SSTL I/O standard among available different class of SSTL logic family in FPGA, plays a vital role to achieve energy efficiency in design under test (DUT). Here, DUT is ROM. ROM is an integral part of processor. Therefore, energy efficient design of RAM is a building block of energy efficient processor. We are using Verilog hardware description language, Virtex-6 FPGA, and Xilinx ISE simulator. We are operating ROM with the highest operating frequency of 4th generation i7 processor to test the compatibility of this design with the latest hardware in use. When there is no demand of peak performance, then we can save 74.5% clock power, 75% signal power, and 30.83% I/O power by operating our device with 1GHz frequency in place of 4GHz. There is no change in clock power and signal power but SSTL2_H_DCI having 80.24% 83.38% 62.92% and 76.52% and 83.03% more I/O power consumption with respect to SSTL2_I, SST18_I, SSTL2_I_DCI, SSTL2_II, and SSTL15 respectively at 3.3GHz.","PeriodicalId":129568,"journal":{"name":"3rd International Symposium on Environmental Friendly Energies and Applications (EFEA)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127636021","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: 14

Numerical study of distribution of smoke and hazards in underground parking areas considering the operation of ventilation 考虑通风运行的地下停车区烟气分布及危害数值研究

3rd International Symposium on Environmental Friendly Energies and Applications (EFEA) Pub Date : 2014-11-01 DOI: 10.1109/EFEA.2014.7059991

V. Stoyanov, A. Terziev, M. Uzunova

引用次数: 7