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2012 International Conference on Renewable Energy Research and Applications (ICRERA)最新文献

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Impedance Estimation and the Total Harmonic Distortion Methods for Islanding Detection 孤岛检测中的阻抗估计和总谐波失真方法
2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI: 10.1109/ICRERA.2012.6477473
Bohan Liu, K. Jia
{"title":"Impedance Estimation and the Total Harmonic Distortion Methods for Islanding Detection","authors":"Bohan Liu, K. Jia","doi":"10.1109/ICRERA.2012.6477473","DOIUrl":"https://doi.org/10.1109/ICRERA.2012.6477473","url":null,"abstract":"An islanding situation should be detected accurately soon after the island is formed. Because failure to trip the islanded distributed resource can lead to a number of problems for the resource and the connected load. Therefore, it is important to distinguish islanding and non-islanding situations and block the nuisance tripping effectively. This paper compares two islanding detection methods, during the load variation (non-islanding) and power imbalance closely match (islanding) conditions, the performance of these two methods are investigated.","PeriodicalId":239142,"journal":{"name":"2012 International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"6 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113979420","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: 9
Performance characteristics of quick response digital peak-current-mode 380V DC-DC converter for green IT system 绿色IT系统中快速响应数字峰值电流型380V DC-DC变换器的性能特性
2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI: 10.1109/ICRERA.2012.6477253
F. Kurokawa, K. Kajiwara, Y. Shibata, Y. Yamabe, T. Tanaka, K. Hirose
{"title":"Performance characteristics of quick response digital peak-current-mode 380V DC-DC converter for green IT system","authors":"F. Kurokawa, K. Kajiwara, Y. Shibata, Y. Yamabe, T. Tanaka, K. Hirose","doi":"10.1109/ICRERA.2012.6477253","DOIUrl":"https://doi.org/10.1109/ICRERA.2012.6477253","url":null,"abstract":"The purpose of this paper is to present performance characteristics of a quick response digital peak-current-mode 380V dc-dc converter for the green IT system. A proto-type is constructed as the digital control dc-dc converter used in the higher voltage direct current (HVDC) system for the green IT. The proto-type uses the digital peak-current-mode control to show a superior transient response. A dc power supply uses 380V in above HVDC system. The transient response of proto-type is indicated in this paper. As a result, the convergence time and undershoot of output voltage are suppressed to one half and one fourth, respectively.","PeriodicalId":239142,"journal":{"name":"2012 International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132480482","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
A fuzzy logic model of a tracking system for solar panels in northern Jordan based on experimental data 基于实验数据的约旦北部太阳能电池板跟踪系统的模糊逻辑模型
2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI: 10.1109/ICRERA.2012.6477469
N. Al-Rousan, M. Al-Rousan, Adnan Shareiah
{"title":"A fuzzy logic model of a tracking system for solar panels in northern Jordan based on experimental data","authors":"N. Al-Rousan, M. Al-Rousan, Adnan Shareiah","doi":"10.1109/ICRERA.2012.6477469","DOIUrl":"https://doi.org/10.1109/ICRERA.2012.6477469","url":null,"abstract":"Renewable energy is the energy that comes from natural resources and it is the energy that naturally replenished and can be converted from a form to another to be useful for human usage. Solar energy is one form of renewable energy that can be obtained from sun through the form of solar radiation. It is a promising alternative technology that will help to replace petroleum energy sources. However, there are many problems to use such as technology which limits the produced energy. The major problem is the poor efficiency of solar cells and the high cost. Tracking systems are used to maximize electricity output of solar cells. However, this is not a naive task due to the difficulty in finding a general rule that can be used to get optimal output of solar cells for all situations. Moreover, different environments may affect the output of solar cells. Artificial Intelligence could be used to control these parameters for better efficiency. So; the aim of this paper is to introduce an efficient tracking model for the solar panel set that maximizes the energy output of the solar system in the area of Jordan and its neighbors based on practical experiment. The proposed fuzzy model was experimentally evaluated to demonstrate that this system can successfully predict the correct angles with superior results when it provides any average low error rate of 3.55% for predicted tilt angles and 4.1% degrees for predicted orientation angles. This low predicted error indicates that the system can be used efficiently in Jordan and its neighbors to predict the directions to collect the maximum power.","PeriodicalId":239142,"journal":{"name":"2012 International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134547224","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
Testing of a gyroscopic Wave Energy System 陀螺仪波能系统的测试
2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI: 10.1109/ICRERA.2012.6477443
G. Bracco, E. Giorcelli, G. Mattiazzo, M. Pastorelli, M. Raffero
{"title":"Testing of a gyroscopic Wave Energy System","authors":"G. Bracco, E. Giorcelli, G. Mattiazzo, M. Pastorelli, M. Raffero","doi":"10.1109/ICRERA.2012.6477443","DOIUrl":"https://doi.org/10.1109/ICRERA.2012.6477443","url":null,"abstract":"The extraction of energy from ocean waves has been investigated in Europe since the 1970s. Several devices have been proposed and a few of them have been built full scale and deployed to the ocean. Actually there is not a kind of device that is accepted as the most suitable to exploit wave power. One of the practical problems to be solved in a Wave Energy Converter (WEC) is the durability in the harsh marine environment and the capability to withstand in extreme weather conditions. The durability could be critical if parts of the converter, such as turbine rotors or auxiliary floats, are needed to move or to react while exposed to seawater and spray. One method to solve the problem is to use a WEC composed just by one sealed floating body carrying a gyroscope. The incident waves activate the precession motion of the gyroscope, the output power is produced by damping the precession motion. The whole system operates in the clean environment on the float. In this paper the design and the tests of an ISWEC (Inertial Sea Wave Energy Converter) are presented. The tests are carried out both by a purposely designed test bench in the laboratory and in a wave tank.","PeriodicalId":239142,"journal":{"name":"2012 International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133924514","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
Reinforcement effect of PCM shotcrete method using FRP grid for tunnel maintenance 采用FRP格栅的PCM喷射混凝土法加固隧道的效果
2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI: 10.1109/ICRERA.2012.6477362
Y. Higashi, Bo Li, Yujing Jiang
{"title":"Reinforcement effect of PCM shotcrete method using FRP grid for tunnel maintenance","authors":"Y. Higashi, Bo Li, Yujing Jiang","doi":"10.1109/ICRERA.2012.6477362","DOIUrl":"https://doi.org/10.1109/ICRERA.2012.6477362","url":null,"abstract":"The PCM shotcrete method using FRP grid, with the properties of high strength, low weight, high workability, strong resistance to corrosion, and little influence on the existing structures, has been used in tunnel maintenance to repair the damaged lining of some aged tunnels. However, the construction cases are still few, and the design routine of this method based on quantitative evaluation on the reinforcement effect has not been established. In this study, we estimated the shear bond strength and the shear stiffness of a typical FRP grid by direct shear test. Those parameters were input into the numerical tunnel model to quantitatively estimate the displacement control effect of the FRP-PCM method. The experiment and numerical simulation results show that the FRP-PCM method has good reinforcement effect on tunnel lining.","PeriodicalId":239142,"journal":{"name":"2012 International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"17 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130989916","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: 5
Country study on renewable energy sources in Turkey 关于土耳其可再生能源的国别研究
2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI: 10.1109/ICRERA.2012.6477369
O. Kaplan, U. Yavanoglu, F. Issi
{"title":"Country study on renewable energy sources in Turkey","authors":"O. Kaplan, U. Yavanoglu, F. Issi","doi":"10.1109/ICRERA.2012.6477369","DOIUrl":"https://doi.org/10.1109/ICRERA.2012.6477369","url":null,"abstract":"Renewable energy sources have been an attraction for both researchers and scientists recently. In this study, a survey focused on renewable energy sources in Turkey has been presented. The survey has been conducted by researchers working in different scientific disciplines registered to Scientific and Technological Research Council of Turkey. The questionnaires have been prepared in order to explore the opinions of researchers related to renewable energy issues. Turkey has important potential on account of renewable energy sources as well as geographical location has been suitable for the use of those sources simultaneously. However, Turkey has imported more than half part of its energy and depends on foreign energy supplies. This situation demonstrates that there is large difference between estimated renewable energy potential and the amount of renewable energy employed in Turkey. The aim of this article is to reveal the reasons of this gap through the perspective of academics. The results of survey are indicated the attitudes of researchers studying in several fields about the renewable energy issues of Turkey.","PeriodicalId":239142,"journal":{"name":"2012 International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133602588","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: 9
An output degradation of photovoltaic module by fine particles deposition 通过细颗粒沉积的光伏组件的输出退化
2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI: 10.1109/ICRERA.2012.6477258
K. Tsuboi, T. Matsuoka, T. Yachi
{"title":"An output degradation of photovoltaic module by fine particles deposition","authors":"K. Tsuboi, T. Matsuoka, T. Yachi","doi":"10.1109/ICRERA.2012.6477258","DOIUrl":"https://doi.org/10.1109/ICRERA.2012.6477258","url":null,"abstract":"One factor that reduces the output of photovoltaic module is direct blocking of light by shadows and by objects such as leaves and airborne dust. The output reduction due to vehicle exhaust and particles in the atmosphere is generally estimated to be about several % [2], but this figure may be affected by differences in areas, which may arise from variations in particle size, color or some other factor. In this study, we investigated the photovoltaic output degradation by the effect of very small particles. In particular, there were examined the effect of particle material and size on the output power. Since SiO2 and Si are the main components of sand from all areas in the world and SiO2 makes up over 90 % of sand from ancient deserts, there were investigated effect of SiO2, Si and SiC particles.","PeriodicalId":239142,"journal":{"name":"2012 International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128831212","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
Self-tunable fuzzy logic controller for the optimization of heaving wave energy converters 用于升沉波能量转换器优化的自整定模糊控制器
2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI: 10.1109/ICRERA.2012.6477273
M. Jama, Ali Assi, A. Wahyudie, Hassan Noura
{"title":"Self-tunable fuzzy logic controller for the optimization of heaving wave energy converters","authors":"M. Jama, Ali Assi, A. Wahyudie, Hassan Noura","doi":"10.1109/ICRERA.2012.6477273","DOIUrl":"https://doi.org/10.1109/ICRERA.2012.6477273","url":null,"abstract":"This paper proposes a new suboptimal reactive control technique for controlling single body heaving wave energy converter (WEC). A self-tunable fuzzy logic controller is implemented to maximize the absorbed energy while respecting the physical limitations of the device. Particle swarm optimization (PSO) algorithm is utilized to carry out an on-line optimization process of the fuzzy membership functions (MFs) embedded in the fuzzy controller. The proposed PSO-FLC out-performed the conventional fuzzy logic controller (C-FLC) in terms of improving reference signal tracking accuracy, widening the device wave absorption bandwidth, and preserving a degree of robustness to model uncertainties.","PeriodicalId":239142,"journal":{"name":"2012 International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133739343","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: 21
Analysis and optimization design of snubber cricuit for isolated DC-DC converters in DC power grid 直流电网中隔离型DC-DC变换器缓冲电路分析与优化设计
2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI: 10.1109/ICRERA.2012.6477325
K. Orikawa, J. Itoh
{"title":"Analysis and optimization design of snubber cricuit for isolated DC-DC converters in DC power grid","authors":"K. Orikawa, J. Itoh","doi":"10.1109/ICRERA.2012.6477325","DOIUrl":"https://doi.org/10.1109/ICRERA.2012.6477325","url":null,"abstract":"This paper clarifies the principle of the surge voltage in the diode rectifier that is connected to the transformer in the isolated DC-DC converter. In addition, the design method of the RC snubber circuit is discussed by using the equivalent circuit that is consisting of the transformer, the snubber circuit and the diode. Finally, the experimental results are provided to validate the design method.","PeriodicalId":239142,"journal":{"name":"2012 International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"257 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124226831","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
Control of a grid connected variable speed wind energy conversion system 并网变速风能转换系统的控制
2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI: 10.1109/ICRERA.2012.6477468
M. Hussein, T. Senjyu, M. Orabi, M. Wahab, M. Hamada
{"title":"Control of a grid connected variable speed wind energy conversion system","authors":"M. Hussein, T. Senjyu, M. Orabi, M. Wahab, M. Hamada","doi":"10.1109/ICRERA.2012.6477468","DOIUrl":"https://doi.org/10.1109/ICRERA.2012.6477468","url":null,"abstract":"This paper presents a simple control strategy for a variable speed wind energy conversion system with a permanent magnet synchronous generator (PMSG). PMSG is connected to the grid through a switch mode rectifier and a voltage source inverter. The grid should be supplied by certain levels of powers for certain times from wind energy system according to a certain schedule. Batteries bank is connected to the DC-link voltage through a DC-DC bidirectional converter to maintain the DC voltage at constant value. Also it is used to make batteries bank stores a surplus of wind energy and supplies this energy to the grid during the wind power shortage. Voltage source inverter, at the grid side, uses a relatively complex vector control scheme to supply power at unity power factor into the grid. Simulation results have been performed using MATLAB/SIMULINK. It demonstrates that the controller performs very well in spite of variation in wind speed and demanded grid power. Also, maximum power extraction from wind turbine can be achieved through the switch mode rectifier control at the generator side.","PeriodicalId":239142,"journal":{"name":"2012 International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114842394","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: 12
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