Ramazan Ayaz, I. Nakir, H. Akca, Ali Ajder, M. Tanrioven
{"title":"A new approach for relationship between daylight and indoor illumination level","authors":"Ramazan Ayaz, I. Nakir, H. Akca, Ali Ajder, M. Tanrioven","doi":"10.1109/ICRERA.2014.7016502","DOIUrl":"https://doi.org/10.1109/ICRERA.2014.7016502","url":null,"abstract":"In recent years, the studies on energy efficiency in both industry and academia increased visibly worldwide. As the result of these studies, DIN V 18599-4 is published in 2007. According to this pre-standard, calculation methods about building energy performance were prepared. During design process of building for high energy efficiency, pre-standard contains daylight supply factor. However these calculations are so complex for software development. Our studies on these calculations indicate that there are a lot of parameters which affect the results so realistic results cannot be obtained easily. Also, indoor lighting energy is affected from these results. These are disadvantages of this method. This study provides an alternative for calculation methods of daylight supply factor which is given in DIN V 18599-4 pre-standard. The relationship between global radiation on horizontal surface and building zone that has window is established and it is formulized empirically. Therefore, by using this formula the effect of daylight in windowed zone can be calculated. The number of calculations of this presented method is quite simpler and these calculations provide more realistic results than the pre-standard method in terms of indoor lighting energy.","PeriodicalId":243870,"journal":{"name":"2014 International Conference on Renewable Energy Research and Application (ICRERA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129403210","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}
M. A. R. Shafei, D. Ibrahim, Essam El-Din Abo El-Zahab, M. A. Younes
{"title":"Biogeography-Based Optimization Technique for maximum power tracking of hydrokinetic turbines","authors":"M. A. R. Shafei, D. Ibrahim, Essam El-Din Abo El-Zahab, M. A. Younes","doi":"10.1109/ICRERA.2014.7016493","DOIUrl":"https://doi.org/10.1109/ICRERA.2014.7016493","url":null,"abstract":"Hydrokinetic energy, referring to the energy contained in moving water, is a renewable energy source that gained much consideration in the past years and expected to play a significant role in the future. The energy is initiated in all moving water masses, but is significantly economic to convert for water masses moving with high velocity. Nonlinear characteristics of water speed and generator model in hydrokinetic energy conversion systems require an optimal controller for achieving optimal performance and high efficiency of the system. Here, the field oriented control method is proposed to set the PI controllers which their coefficients are optimized based on Biogeography-Based Optimization technique (BBO). In order to use BBO to solve this problem, the problem has to be formulated as an optimization problem. Numerous simulation studies are carried out to verify the effectiveness of the proposed controller scheme. Achieved results for different patterns of water speed changes in time domain show the capability of the proposed control.","PeriodicalId":243870,"journal":{"name":"2014 International Conference on Renewable Energy Research and Application (ICRERA)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115882299","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":"Rectifier efficiency analysis for DC distributed data centers","authors":"Seyed Ahmad Hamidi, A. Nasiri, Zhao Tiefu","doi":"10.1109/ICRERA.2014.7016490","DOIUrl":"https://doi.org/10.1109/ICRERA.2014.7016490","url":null,"abstract":"In order to find the most efficient rectifier topologies, in terms of costs and losses, which will be utilized as the front-end rectifier in the DC power distribution in data center power supply systems, two different types of AC to DC converters/rectifiers, a three-phase Buck-type Current Source Rectifier (CSR) and a Multi-pulse rectifier, are investigated. Simulation models for both topologies are conducted in Ansoft/Simplorer and PSIM software, respectively. Practical specifications have been set by means of using respective datasheets, provided for the power elements, i.e. switches, diodes and transformers, the efficiencies and losses calculation, as well as performance of each rectifier are evaluated.","PeriodicalId":243870,"journal":{"name":"2014 International Conference on Renewable Energy Research and Application (ICRERA)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117157160","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}
M. Davarifar, A. Rabhi, A. Hajjaji, E. Kamal, Z. Daneshifar
{"title":"Partial shading fault diagnosis in PV system with discrete wavelet transform (DWT)","authors":"M. Davarifar, A. Rabhi, A. Hajjaji, E. Kamal, Z. Daneshifar","doi":"10.1109/ICRERA.2014.7016497","DOIUrl":"https://doi.org/10.1109/ICRERA.2014.7016497","url":null,"abstract":"The homeowners PV system want to maximize the total energy harvesting from their installed resident PV system (RPS), especially if there is a feed-in tariff (FIT) in play. In this regard, fault detection in solar photovoltaic (PV) arrays allows to expedite PV system recovery time. On the other hand, one of the most common fault in RPS is partial shading and fault diagnosis effort and interpreting this type of fault is motivated us to propose this paper. I-V curve of shaded string included notched and steeped points which are related to signature of shaded cells. In fact, the value of the vertical height in I-V curve represented of percentage of shading. Likewise, the horizontal or voltage distance from Voc of the notched point is related to the number of cells strings within modules those have been bypassed by diodes (Number of bypassed modules). In this work, for first time discrete wavelet transform (dwt) is used to interpret traced I-V curve of PV system and defining these coordinated points in related diagnosis effort.","PeriodicalId":243870,"journal":{"name":"2014 International Conference on Renewable Energy Research and Application (ICRERA)","volume":"299 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114579003","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":"Multi-agent simulator of incentive influence on PV adoption","authors":"Andrea Borghesi, M. Milano","doi":"10.1109/ICRERA.2014.7016446","DOIUrl":"https://doi.org/10.1109/ICRERA.2014.7016446","url":null,"abstract":"Renewable energy technologies have benefited to varying extent from the support of incentive programmes introduced in the industrialised countries over the last 20 years. Understanding the impact of incentive schemas on the adoption of renewable energy sources is a crucial aspect for policy makers. We study in this paper the impact of national incentives on photovoltaic plant diffusion in Italy by devising an agent-based simulator which is currently being tuned on real data and will help policy makers to forecast future adoptions.","PeriodicalId":243870,"journal":{"name":"2014 International Conference on Renewable Energy Research and Application (ICRERA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126995841","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":"Simulation of a photovoltaic panel supported real time hybrid electric vehicle","authors":"Hakan Suvak, Kemal Erşan","doi":"10.1109/ICRERA.2014.7016441","DOIUrl":"https://doi.org/10.1109/ICRERA.2014.7016441","url":null,"abstract":"In this study, implementation of design and simulation programme of a solar energy (photovoltaic panel) supported hybrid electric vehicle was designed, which is considered to be widely used in the 21st century. In the study, DC motor was simulated for a serial hybrid electric vehicle in ICE-generator and photovoltaic panel matlab/simulink environment. Moreover, a .m file was written by calculating the resistance forces which compels the vehicle to movement and impedes the vehicle movement. According to UDDS (Urban Dynamometer Driving Schedule) city line, the instant power requirement that the vehicle needs depending on time was put in the written .m file, and simulation was performed.","PeriodicalId":243870,"journal":{"name":"2014 International Conference on Renewable Energy Research and Application (ICRERA)","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128162075","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":"Coaxial magnetic gear analysis and optimization","authors":"C. Neves, Ály Ferreira Flores","doi":"10.1109/ICRERA.2014.7016530","DOIUrl":"https://doi.org/10.1109/ICRERA.2014.7016530","url":null,"abstract":"In this paper the CMG working principle is explained with help of Finite Elements Method (FEM) and Fast Fourier Transform (FFT). A parametric study is performed to determine how the modulators dimensions affect the pull-out torque. An optimization procedure is applied to maximize the pull-out torque.","PeriodicalId":243870,"journal":{"name":"2014 International Conference on Renewable Energy Research and Application (ICRERA)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127359651","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}
F. Huerta, J. Gruber, M. Prodanović, P. Matatagui, T. Gafurov
{"title":"A laboratory environment for real-time testing of energy management scenarios: Smart Energy Integration Lab (SEIL)","authors":"F. Huerta, J. Gruber, M. Prodanović, P. Matatagui, T. Gafurov","doi":"10.1109/ICRERA.2014.7016438","DOIUrl":"https://doi.org/10.1109/ICRERA.2014.7016438","url":null,"abstract":"Grid integration of distributed energy resources (DERs) has been a hot topic in the field of power electronics in recent years. Time and resources required in experimental verification of control algorithms and equipment can be significantly reduced by using power-hardware-in-the-loop (PHIL) techniques. The paper presents the Smart Energy Integration Lab (SEIL), a PHIL based microgrid testbed specifically built for analyzing grid integration aspects of DERs with a focus on system dynamic performance and power dispatch scenarios. The SEIL consists of a remotely-controlled AC network configuration, power electronics converters, passive load banks, a battery storage system and real-time control and data acquisition systems. By using these resources, the laboratory allows configuration and simultaneous operation of several microgrids. To demonstrate the functionality of the SEIL, a power dispatch scenario applied to a microgrid was used.","PeriodicalId":243870,"journal":{"name":"2014 International Conference on Renewable Energy Research and Application (ICRERA)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121693949","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}
Masatoshi Oku, T. Sakoda, Noriyuki Hayashi, D. Tashima
{"title":"Basic characteristics of a heat and electricity combined generation system using biomass fuel","authors":"Masatoshi Oku, T. Sakoda, Noriyuki Hayashi, D. Tashima","doi":"10.1109/ICRERA.2014.7016560","DOIUrl":"https://doi.org/10.1109/ICRERA.2014.7016560","url":null,"abstract":"In this paper, we propose a unique co-generation system including a biomass boiler-using a thermoelectric generator (TEG). The boiler burned biomass fuel derived from a cow dung. In this system, warm water is generated through heat exchange in the boiler, and electricity is generated through the TEG that uses the high temperature of an exhaust gas from the boiler. In this study, the co-generation system was not well optimized, with the result that both the heat exchange efficiency of the biomass boiler and hence, - the amount of electric power generated were very low. However, the study demonstrated that the co-generation system that using the biomass as a heat source, and a TEG as an electric power generator can provide an effective energy source.","PeriodicalId":243870,"journal":{"name":"2014 International Conference on Renewable Energy Research and Application (ICRERA)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116531707","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}
Jayme Milanezi, J. C. D. da Costa, Edison Pignaton de Freitas
{"title":"Improved radiofrequency energy harvesting based on a rectenna array system and its feasibility evaluation in urban environments","authors":"Jayme Milanezi, J. C. D. da Costa, Edison Pignaton de Freitas","doi":"10.1109/ICRERA.2014.7016447","DOIUrl":"https://doi.org/10.1109/ICRERA.2014.7016447","url":null,"abstract":"Energy recycling has become very atractive due to the extended usage time of devices. Among several forms of recycling energy, radiofrequency (RF) harvesting is becoming popular due to its immense availability mainly in urban environments. The possible utilizations for such amount of energy is mainly applicable for sensors nodes and, depending on the quantity of antennas, charging low power consumption portable devices. In this paper, we evaluate the feasible application of RF waves for energy recycling as an energetic source for charging a cell phone and furnishing power to embeded sensors. To validate our analysis, we conducted an RF measurement campaign at four important locations in Brasília, Brazil. Considering the average incidence of -3 dBm, we have achieved the final value of 2.18 mWh per day per antenna. In such context, and from the energetic standpoint, the utilization concerning to powering sensors was suitable for sensor networks applications, due to its low power consumption. However, in order to apply the RF energy harvesting in higher power consumption devices, we propose a rectenna array system which increases considerably the amount of recycled power. In particular, for massive MIMO communication systems, our proposed solution would require very little additional hardware being, therefore, very attractive.","PeriodicalId":243870,"journal":{"name":"2014 International Conference on Renewable Energy Research and Application (ICRERA)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133177816","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}