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2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA)最新文献

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Performance of a V-trough photovoltaic system 槽型光伏系统的性能
2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2016-11-01 DOI: 10.1109/ICRERA.2016.7884474
Wisam A. M. Al-Shohani, R. AL-Dadah, S. Mahmoud, A. Algareu
{"title":"Performance of a V-trough photovoltaic system","authors":"Wisam A. M. Al-Shohani, R. AL-Dadah, S. Mahmoud, A. Algareu","doi":"10.1109/ICRERA.2016.7884474","DOIUrl":"https://doi.org/10.1109/ICRERA.2016.7884474","url":null,"abstract":"This paper presents a novel optical simulation of a design of the V-trough concentrator used with photovoltaic modules by ray-tracing method. The V-trough concentrator is two flat reflectors fixed on the photovoltaic module as a V latter in order to increase the income solar radiation to the photovoltaic. The advantages of using the V-trough is increasing of the income solar radiation to the photovoltaic which leads to increasing in the current output of the photovoltaic as well as the overall power output for the same size of the photovoltaic. The main aim of this paper is to utilize advanced ray tracing simulation to predict the concentration coefficient of a V-trough concentrator and compare the simulation results with the published experimental results. The results show that the difference between the simulation and experimental results is 1.99% indicating good agreement between the simulation and the experimental work.","PeriodicalId":287863,"journal":{"name":"2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126023003","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
Surface polarization effect and recovery process of crystalline-Si photovoltaic modules 晶体硅光伏组件的表面极化效应及回收工艺
2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2016-11-01 DOI: 10.1109/ICRERA.2016.7884361
S. Casula, C. Sanna, M. Gawrońska, A. Damiano
{"title":"Surface polarization effect and recovery process of crystalline-Si photovoltaic modules","authors":"S. Casula, C. Sanna, M. Gawrońska, A. Damiano","doi":"10.1109/ICRERA.2016.7884361","DOIUrl":"https://doi.org/10.1109/ICRERA.2016.7884361","url":null,"abstract":"Surface polarization effect was identified as an important factor that impairs the energy performance of photovoltaic crystalline-Si modules. Such an effect has been experimentally analysed by monitoring a monocrystalline Si-modules based power plant. It has been revealed that the surface polarization effect can reduce the photovoltaic power plant production up to 50 % respect to the expected value. Polarization effects in monocristalline Si-modules are generally caused by an incorrect grounding of the photovoltaic power plant on the DC side. In the present paper such degradation process has been investigated both on the whole plant and on modules. By analysing the I-V characteristics of selected modules, it has been revealed that the degradation rate depends on their position in the string. Finally, different recovery approaches have been experimentally tested on sampled modules and on the whole photovoltaic power plant. The results of the characterization carried out during recovery process are presented.","PeriodicalId":287863,"journal":{"name":"2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132411216","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
Multilevel converter system for photovoltaic panels 光伏板多电平变换器系统
2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2016-11-01 DOI: 10.1109/ICRERA.2016.7884468
Luciano E. M. Calaça, Élvio G. A. Jesus, J. Dionísio Barros
{"title":"Multilevel converter system for photovoltaic panels","authors":"Luciano E. M. Calaça, Élvio G. A. Jesus, J. Dionísio Barros","doi":"10.1109/ICRERA.2016.7884468","DOIUrl":"https://doi.org/10.1109/ICRERA.2016.7884468","url":null,"abstract":"This paper presents a photovoltaic energy conversion project for the production of electricity to the electrical grid, using a multilevel converter, optimizing power transfer and improving the AC current form shape. Multilevel conversion is a topology which has some advantages over the 2-level topology, in particular it allows to work with higher voltage levels and improves the power quality. The neutral-point-clamped (NPC) multilevel converter uses capacitors to create the voltage levels that, in this project, will be used to connect the panels, thus optimizing power transfer. Control methods are applied to AC currents to have the alternating and sinusoidal waveform and to be in phase with the grid voltage, as well as to regulate DC voltage. The simulation (Matlab/Simulink) and experimental results (lab prototype) showed that the used control methods allowed to extract the photovoltaic power, where the state variables converge to its references, according to the solar irradiation and the panels temperature conditions.","PeriodicalId":287863,"journal":{"name":"2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130441191","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: 8
Single-phase power conditioning system with slew-rate controlled synchronizer for renewable energy system in microgrid 微电网可再生能源系统单相调速同步器功率调节系统
2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2016-11-01 DOI: 10.1109/ICRERA.2016.7884395
Sewan Heo, Wan-ki Park, Ilwoo Lee
{"title":"Single-phase power conditioning system with slew-rate controlled synchronizer for renewable energy system in microgrid","authors":"Sewan Heo, Wan-ki Park, Ilwoo Lee","doi":"10.1109/ICRERA.2016.7884395","DOIUrl":"https://doi.org/10.1109/ICRERA.2016.7884395","url":null,"abstract":"This paper proposes single-phase power conditioning system which is capable of connecting a microgrid to an utility grid seamlessly through slew-rate control. The power conditioning system is composed of a single-phase phase-locked loop using an inverse Park transformation to detect the grid phase, a phase synchronizer using the slew-rate control, and isolated bidirectional inverter which transfers power among the utility grid, energy storage, and load. The inverter is controlled by the voltage and current controllers for the island and grid-connected operation, respectively. The power conditioning system operates using the inverter controlled by a mode controller according to the microgrid operation mode and state of charge of the energy storage. The stable operation of the power conditioning system was verified in three microgrid operation modes through simulations using the MATLAB/Simulink tool.","PeriodicalId":287863,"journal":{"name":"2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"58 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134257790","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
Efficient MPPT control for fast irradiation changes and partial shading conditions on PV systems 高效MPPT控制光伏系统的快速辐照变化和部分遮阳条件
2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2016-11-01 DOI: 10.1109/ICRERA.2016.7884360
B. Veerasamy, A. Thelkar, G. Ramu, T. Takeshita
{"title":"Efficient MPPT control for fast irradiation changes and partial shading conditions on PV systems","authors":"B. Veerasamy, A. Thelkar, G. Ramu, T. Takeshita","doi":"10.1109/ICRERA.2016.7884360","DOIUrl":"https://doi.org/10.1109/ICRERA.2016.7884360","url":null,"abstract":"Power output from the PV arrays are directly proportional to the sun's radiation occurring on its surface area. Partial shading on the PV arrays reduces the power output and produces multiple peaks on the P-V characteristics. The power losses caused by partial shading depend on its pattern and array configuration but does not depend on the shaded area. A Maximum Power Point Tracking (MPPT) method is proposed in this paper to detect the occurrence of shading on PV arrays and finding the Global Maximum Power Point (GMPP) with minimum tracking time. The MPPT controller detects the occurrence of partial shading without periodic scanning. The efficiency of the proposed MPPT method is compared with Perturb and Observe (P&O) and Incremental Conductance (INC) MPPT methods. The results proves that the proposed MPPT method identifies the occurrence of shading on the PV array and tracks the GMPP within a short time and thus proving efficient over the two methods.","PeriodicalId":287863,"journal":{"name":"2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131487284","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: 38
Development of axial flux permanent magnet generator for direct driven micro wind turbine 直驱微型风力发电机轴向磁通永磁发电机的研制
2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2016-11-01 DOI: 10.1109/ICRERA.2016.7884531
T. El-Hasan
{"title":"Development of axial flux permanent magnet generator for direct driven micro wind turbine","authors":"T. El-Hasan","doi":"10.1109/ICRERA.2016.7884531","DOIUrl":"https://doi.org/10.1109/ICRERA.2016.7884531","url":null,"abstract":"This paper presents the development of Axial Flux Permanent Magnet Generator to be used for wind turbines in the range below 5 kW power applications. The proposed generator that is to be directly coupled to the wind turbine, unlocks the potential for energy harvesting due to its outstanding merits such as high efficiency, low cogging torque, high power density and ease of manufacturing and assembly. In this paper, the analytical model for generator sizing is presented, main parameters to meet the requirements are defined. The generator is also modeled using Matlab/Simulink to predict its performance under certain operating conditions. In addition, generator model and simulation results are validated via experimental tests. The preliminary experimental results showed a good match with the simulation results hence demonstrate the concrete benefits of utilizing the axial flux permanent magnet generator in scavenging energy to generate electrical power from micro wind turbines.","PeriodicalId":287863,"journal":{"name":"2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127570327","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
Evaluation of different maximum power point tracking (MPPT) techniques based on practical meteorological data 基于实际气象数据的最大功率点跟踪(MPPT)技术评价
2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2016-11-01 DOI: 10.1109/ICRERA.2016.7884423
Xingshuo Li, H. Wen, Yihua Hu
{"title":"Evaluation of different maximum power point tracking (MPPT) techniques based on practical meteorological data","authors":"Xingshuo Li, H. Wen, Yihua Hu","doi":"10.1109/ICRERA.2016.7884423","DOIUrl":"https://doi.org/10.1109/ICRERA.2016.7884423","url":null,"abstract":"Recently, many Maximum power point tracking (MPPT) techniques are proposed in the Photovoltaic (PV) systems. However, a comprehensive comparison of various MPPT techniques especially the dynamic tracking performance has not been made quantitatively for different working conditions. By reviewing different methods, the day-by-day operating evaluation method with practical meteorological data is used in this paper. Furthermore, three typical MPPT techniques including fixed step size P&O method, variable step size incremental conductance method, and hybrid step size Beta method, are selected in the performance evaluation. In order to improve the experimental repeatability and minimize the effect of random environmental factor such as partial shading, an indoor test system that consists of a DC-DC boost converter, a PV emulator and a dSPACE is used. The practical meteorological data are used for the evaluation these typical MPPT techniques and main experimental results are presented.","PeriodicalId":287863,"journal":{"name":"2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133374257","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: 32
A distributed controller for DC microgrids stability enhancement 一种增强直流微电网稳定性的分布式控制器
2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2016-11-01 DOI: 10.1109/ICRERA.2016.7884396
Marzieh Karami, R. Cuzner
{"title":"A distributed controller for DC microgrids stability enhancement","authors":"Marzieh Karami, R. Cuzner","doi":"10.1109/ICRERA.2016.7884396","DOIUrl":"https://doi.org/10.1109/ICRERA.2016.7884396","url":null,"abstract":"The motivation toward the application of DC microgrids is increasing as a result of the increasing number of electronic loads. DC microgrids decreases the number of conversions, avoids the voltage harmonics and reactive power associated with AC microgrids, is a lower cost solution and is capability of supplying a high quality voltage to sensitive dc loads. One of the main concerns regarding DC microgrids is that constant power loads can cause instabilities. This paper proposes a distributed control method for ensuring large signal stability of DC microgrids. This new controller is general and can be tailored to different architectures.","PeriodicalId":287863,"journal":{"name":"2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124167524","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: 8
Power differential method based islanding detection in PV systems 基于功率差分法的光伏系统孤岛检测
2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2016-11-01 DOI: 10.1109/ICRERA.2016.7884444
O. Ozgonenel, S. Karagol
{"title":"Power differential method based islanding detection in PV systems","authors":"O. Ozgonenel, S. Karagol","doi":"10.1109/ICRERA.2016.7884444","DOIUrl":"https://doi.org/10.1109/ICRERA.2016.7884444","url":null,"abstract":"Safety operation/measures are of great concern and among them islanding phenomena takes an important role for reliable energy. Therefore, the utility grid requires anti-islanding protection for a safe and reliable operation. For this purpose, a different and fast method is proposed for islanding detection in PV systems. The suggested method is based on instantaneous power calculation at the point of common coupling and able to detect islanding condition within a few sampling interval. No further calculation is needed to detect islanding problem for grid connected PV systems.","PeriodicalId":287863,"journal":{"name":"2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116288632","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
Friction welding of lightweight motor shafts for electric vehicles 电动汽车轻量化电机轴的摩擦焊接
2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2016-11-01 DOI: 10.1109/ICRERA.2016.7884548
T. Akiyama, T. Honda, Y. Nakanishi
{"title":"Friction welding of lightweight motor shafts for electric vehicles","authors":"T. Akiyama, T. Honda, Y. Nakanishi","doi":"10.1109/ICRERA.2016.7884548","DOIUrl":"https://doi.org/10.1109/ICRERA.2016.7884548","url":null,"abstract":"The reduction in weight of an electric vehicle (EV) is essential for the improvement of driving performance and reducing cost. In particularly, lightening the weight of motor shaft used for EV contributes to not only total weight reduction but also decrease in shaft inertia, which determines responsiveness of the induction motors. The motor shaft has complicated figures at both shaft ends in order to connect to bearings or a drive shaft. Therefore, these shafts with complicated structures have been made of single solid shaft by cutting using machine tools. Therefore, the shaft weight for the high-power motor used by EV is heavy, and the cost is high. In order to reduce both shaft weight and manufacturing cost, a hollow shaft structure was developed. It was assembled from a pipe and solid parts by ultraprecision friction welding. The hollow shafts that agree with the quality required for EV motor shaft (up to 0.10 mm or less) successfully produced by changing welding condition or work cramping method. In addition, strict inspection on weld defect was conducted by microscopic observation in weld zone. These hollow shafts without any weld defect were usable for practical applications.","PeriodicalId":287863,"journal":{"name":"2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123494496","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
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