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

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Analysis of the heat transfer characteristics in a thermoelectric conversion device
2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI: 10.1109/ICRERA.2012.6477265
K. Kawabuchi, T. Yachi
{"title":"Analysis of the heat transfer characteristics in a thermoelectric conversion device","authors":"K. Kawabuchi, T. Yachi","doi":"10.1109/ICRERA.2012.6477265","DOIUrl":"https://doi.org/10.1109/ICRERA.2012.6477265","url":null,"abstract":"Thermoelectric power generation systems directly transform thermal energy into electric energy using thermoelectric conversion elements. However, the performance enhancement of thermoelectric conversion materials is difficult now. Moreover, generation efficiency is low because the heat loss occurs in a device. Therefore the heat electric conversion system is hardly used. To reduce the heat loss in a thermoelectric conversion system, the contact plate material in the device was changed from a ceramic to copper. This material provided a grooved interlocking of the contact plate. In this study, the optimal shape of the proposed contact plate material was analyzed by computer simulation. The heat loss was found to depend on the shape of the interlocking grooves in the contact plate, and decreased with increasing contact area and pitch width.","PeriodicalId":239142,"journal":{"name":"2012 International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"70 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":"123459243","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
Modeling a permanent magnet synchronous generator used in wind turbine and the realization of voltage control on the model with artificial neural networks 对风力发电用永磁同步发电机进行了建模，并利用人工神经网络实现了对模型的电压控制
2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI: 10.1109/ICRERA.2012.6477286
I. Colak, H. Bulbul, S. Sağiroğlu, M. Sahin
{"title":"Modeling a permanent magnet synchronous generator used in wind turbine and the realization of voltage control on the model with artificial neural networks","authors":"I. Colak, H. Bulbul, S. Sağiroğlu, M. Sahin","doi":"10.1109/ICRERA.2012.6477286","DOIUrl":"https://doi.org/10.1109/ICRERA.2012.6477286","url":null,"abstract":"In this study, the LabVIEW modeling of a permanent magnet synchronous generator that will be used in wind turbine and the voltage control with artificial neural networks on the model are done. Typically synchronous, asynchronous and direct current generators are used in wind turbines. In the scope of this study, synchronous generators are preferred due to the advantages such as high efficiency and high reliability. the artificial neural networks are used in the control of excitation circuit in taking into account the dynamic nature of the wind.","PeriodicalId":239142,"journal":{"name":"2012 International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"34 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":"124499758","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
Near-dry cutting of difficult-to-cut materials Tool wear characteristics of a cemented carbide tool 硬质合金刀具的刀具磨损特性
2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI: 10.1109/ICRERA.2012.6477387
T. Wakabayashi, Y. Maeda, K. Kato, T. Yazawa
{"title":"Near-dry cutting of difficult-to-cut materials Tool wear characteristics of a cemented carbide tool","authors":"T. Wakabayashi, Y. Maeda, K. Kato, T. Yazawa","doi":"10.1109/ICRERA.2012.6477387","DOIUrl":"https://doi.org/10.1109/ICRERA.2012.6477387","url":null,"abstract":"Titanium alloys and Inconel 718 are used in airplane bodies. Pure titanium alloys are used in medical equipment. Wet cutting, which generates a significant amount of cutting fluid, is adopted for the cutting of these difficult-to-cut materials. When near-dry cutting, which is environmentally friendly, is used instead, it easily damages tools, and the stock removal rate and machining accuracy worsen. Thus, in this study, we attempted to clarify and develop a reduction method to generate a mechanism for the cutting-edge fracture in the cylindrical cutting of difficult-to-cut materials. We also examined the relationship between the cutting distance and cutting tool wear as a coefficient of friction on a rake face and tool wear when cutting of the difficult-to-cut materials.","PeriodicalId":239142,"journal":{"name":"2012 International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"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":"124694516","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
DC microgrid operation planning 直流微电网运行规划
2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI: 10.1109/ICRERA.2012.6477447
Ching-Chih Huang, Min-Jui Chen, Yung-Tang Liao, Chan-nan Lu
{"title":"DC microgrid operation planning","authors":"Ching-Chih Huang, Min-Jui Chen, Yung-Tang Liao, Chan-nan Lu","doi":"10.1109/ICRERA.2012.6477447","DOIUrl":"https://doi.org/10.1109/ICRERA.2012.6477447","url":null,"abstract":"Distributed generation (DG) and microgrid will play important roles in the future electric network operations. They could improve energy efficiency, minimize environmental impacts and enhance power system reliability. A power scheduling approach considering load/generation changes and time of use (TOU) tariff for a low voltage DC microgrid incorporating energy storage battery, fuel cell and photovoltaic power generations, is presented in this paper. The problem is solved by a multi path dynamic programming (MPDP) approach. Simulation results illustrate the benefits of DG and energy storage integrations in reducing electricity bill for customers adopting DC distribution system.","PeriodicalId":239142,"journal":{"name":"2012 International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"104 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":"128598148","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: 11
Analysing the efficient use of energy in a small smart grid system 分析小型智能电网系统中能源的有效利用
2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI: 10.1109/ICRERA.2012.6477410
I. Colak, H. Wilkening, G. Fulli, J. Vasiljevska, F. Issi, O. Kaplan
{"title":"Analysing the efficient use of energy in a small smart grid system","authors":"I. Colak, H. Wilkening, G. Fulli, J. Vasiljevska, F. Issi, O. Kaplan","doi":"10.1109/ICRERA.2012.6477410","DOIUrl":"https://doi.org/10.1109/ICRERA.2012.6477410","url":null,"abstract":"Smart grid systems, for being profitably implemented, will have to deliver advantageous results to costumers, investors and operators. This can be realised by providing efficient, secure and reliable systems, connecting distributed renewable energy sources and enabling advanced services. The analysis of those potential benefits should consider all the components of the smart grids from the energy sources to the consumers, including the communication and power flows within the system. This study aims to analyse how to reach an efficient energy use with different means (e.g. better management of the energy consumption rate, consumption forecast, and central energy orientation providing the capabilities of smart homes, communication links and electricity grid management centres. To this end, architecture of a small smart grid system including a novel smart home, communication and energy lines, and a small home energy management centre is studied in this paper. Such architecture is envisaged to have a substantial impact on the operation and management of future electricity network addressing issues such as efficient integration of renewable power sources and emerging consumer behaviour.","PeriodicalId":239142,"journal":{"name":"2012 International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"19 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":"129561703","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
Overview of high power wind turbine generators 大功率风力发电机概述
2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI: 10.1109/ICRERA.2012.6477341
H. Tiegna, Y. Amara, G. Barakat, B. Dakyo
{"title":"Overview of high power wind turbine generators","authors":"H. Tiegna, Y. Amara, G. Barakat, B. Dakyo","doi":"10.1109/ICRERA.2012.6477341","DOIUrl":"https://doi.org/10.1109/ICRERA.2012.6477341","url":null,"abstract":"The goal of this paper is to review generator systems used in wind turbines and to determine suitable generator concepts for future high power wind turbines. An up to date state of the art of wind turbine generators is first presented. It will help, through a critical analysis, to identify limiting constraints to power rating increase of wind turbine generator systems. Finally, some potential solutions are discussed.","PeriodicalId":239142,"journal":{"name":"2012 International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"3 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":"130759429","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: 16
A thermoelectric power generation system with ultra low input voltage boost converter with maximum power point tracking 一种带最大功率跟踪的超低输入电压升压变换器热电发电系统
2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI: 10.1109/ICRERA.2012.6477474
A. Hidaka, T. Tsuji, Satoshi Matsumoto
{"title":"A thermoelectric power generation system with ultra low input voltage boost converter with maximum power point tracking","authors":"A. Hidaka, T. Tsuji, Satoshi Matsumoto","doi":"10.1109/ICRERA.2012.6477474","DOIUrl":"https://doi.org/10.1109/ICRERA.2012.6477474","url":null,"abstract":"In this paper, we propose a thermoelectric power generation system with highly efficient ultra low input boost converter having MPPT. The proposed converter starts at input voltage of less than 0.5V and is useful for the thermoelectric power generation system. MPPT is also effective for this system and its tracking efficiency is nearly 100 %. The proposed system effectively draws the power from thermal energy source.","PeriodicalId":239142,"journal":{"name":"2012 International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"102 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":"132492658","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: 11
Real time voltage control of unbalanced distribution systems with photovoltaic generation 光伏发电不平衡配电系统的实时电压控制
2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI: 10.1109/ICRERA.2012.6477322
Z. Ziadi, A. Yona, T. Senjyu, M. Abdel-Akher, T. Funabashi
{"title":"Real time voltage control of unbalanced distribution systems with photovoltaic generation","authors":"Z. Ziadi, A. Yona, T. Senjyu, M. Abdel-Akher, T. Funabashi","doi":"10.1109/ICRERA.2012.6477322","DOIUrl":"https://doi.org/10.1109/ICRERA.2012.6477322","url":null,"abstract":"This paper presents a real time operation of tap changing transformers and converters interfaced with distributed generators (DGs) in unbalanced three-phase distribution systems. The unbalanced three-phase power flow equations are solved using Newton Raphson method, and the three phase elements models are considered. Since the renewable energies are attracting worldwide attention, the DGs considered here are supposed based on photovoltaic (PV) generators. However, the large amount of distributed generation causes voltage deviation beyond a statutory range in distribution systems. The method proposed in this paper control the voltage through the inverters interfaced with PV modules, using an optimized day-ahead schedule of reactive power resources, which include PV inverters and online transformers. The reactive power outputs of PV inverters are determined according to the locally measured voltage. The voltage droop characteristics are determined by fuzzy controllers. A 24-hour data are used to simulate real time and assess the effectiveness of the proposed voltage control strategy of unbalanced distribution systems. The simulation results show that the voltage fluctuations due to photovoltaic generation are minimized to be within the desired range.","PeriodicalId":239142,"journal":{"name":"2012 International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"104 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":"123299771","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
Investigation of optimal operation method for Permanent Magnet Synchronous Motor drive system with 3-level inverter 三电平变频器永磁同步电机驱动系统优化运行方法研究
2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI: 10.1109/ICRERA.2012.6477377
J. Itoh, D. Sato, T. Tanaka
{"title":"Investigation of optimal operation method for Permanent Magnet Synchronous Motor drive system with 3-level inverter","authors":"J. Itoh, D. Sato, T. Tanaka","doi":"10.1109/ICRERA.2012.6477377","DOIUrl":"https://doi.org/10.1109/ICRERA.2012.6477377","url":null,"abstract":"In this paper, an optimal converter drive method for Permanent Magnet Synchronous Motor (PMSM) with a 3-level inverter is discussed in terms of loss minimization. The 3-level inverter can change an operation mode between two modulations namely, PWM and 1'pulse modulation at a decided point. In this paper, we discuss the interchange point for the two modulations subject to the total loss of PMSM drive system in regards to the motor speed. First, the analysis on intersection point between PWM and 1'pulse modulation is demonstrated, and then the results show, that the motor drive system achieves the highest efficiency with PWM before the intersection point. On one hand, implementation of 1'pulse modulation can achieve the highest efficiency.","PeriodicalId":239142,"journal":{"name":"2012 International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"241 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":"123007074","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
Evaluations of grid currents of an ion engine by particle analysis 用粒子分析评价离子发动机的栅极电流
2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI: 10.1109/ICRERA.2012.6477307
T. Miyasaka, K. Asato, H. Sugiyama
{"title":"Evaluations of grid currents of an ion engine by particle analysis","authors":"T. Miyasaka, K. Asato, H. Sugiyama","doi":"10.1109/ICRERA.2012.6477307","DOIUrl":"https://doi.org/10.1109/ICRERA.2012.6477307","url":null,"abstract":"To evaluate the effects of inflowing-high-energy electrons on the grid erosion, three-dimensional full-PIC analyses of ion engine were conducted. A comparison of the results of full-PIC results show that the inflowing high energy electrons expand the sheath region downstream and blurs the sheath edge. However, only a slight influence of the electrons on grid currents is observed.","PeriodicalId":239142,"journal":{"name":"2012 International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"34 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":"121080375","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
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