发布求助
文献互助 智能选刊 最新文献

2012 ELEKTRO最新文献

筛选
英文 中文
Active magnetic bearing control in 3D model 主动磁轴承控制的三维模型
2012 ELEKTRO Pub Date : 2012-05-21 DOI: 10.1109/ELEKTRO.2012.6225654
G. Martin, S. Kozák, J. Dubravsky
{"title":"Active magnetic bearing control in 3D model","authors":"G. Martin, S. Kozák, J. Dubravsky","doi":"10.1109/ELEKTRO.2012.6225654","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225654","url":null,"abstract":"The aim of this article is modeling, simulation, control and complex design of Active Magnetic Levitation Systems (AMLS). In this application is necessary to proposed the effective control law for the stable operation in levitation mode because these devices in nature are essentially unstable. The stabilizing controller has to generate the appropriate value of electromagnetic force to levitate an object. It is highly important to choose convenient form and parameters of the controllers. The design parameters and controller design should be analyzed in a complex form at the modeling stage. Magnetic levitation system for 3 and 5 axis model of magnetic bearing is analyzed, because AMLS are specific mechatronics devices where the construction and control laws are strongly joined. Simulation results of 3 and 5-axis model are presented to verify correct form and parameters of the proposed controller.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"26 18","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120856680","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
Finding possibilities of detailed and very accurate modeling of high frequency converter 寻找对高频转换器进行详细和非常精确建模的可能性
2012 ELEKTRO Pub Date : 2012-05-21 DOI: 10.1109/ELEKTRO.2012.6225624
J. Kandrac, M. Priecinsky, M. Frivaldský
{"title":"Finding possibilities of detailed and very accurate modeling of high frequency converter","authors":"J. Kandrac, M. Priecinsky, M. Frivaldský","doi":"10.1109/ELEKTRO.2012.6225624","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225624","url":null,"abstract":"This paper deals with simulation model of the LLC resonant converter with frequency of 300kHz. The results of the simulation analysis are compared with results obtained from measurement on the real physical sample of proposed converter. The simulation model consists of three fundamental parts: rectangle impulses generator, resonant circuit with high-frequency transformer and the output rectifier. Coupling between the primary and secondary side is simulated using nonlinear model of magnetic core, which is done with use of Jiles-Atherton model. This model implements all of the important properties of real, nonlinear magnetic cores: first magnetizing curve, magnetizing saturation, coercitive field strength and the hysteresis loss. This is completed with the self-parasitic capacitance of the primary winding, secondary winding and capacitances between the turns.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126979195","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
Fixing element with permanent magnet for transport of rails 轨道运输用永磁体固定元件
2012 ELEKTRO Pub Date : 2012-05-21 DOI: 10.1109/ELEKTRO.2012.6225693
I. Doležel, M. Škopek, B. Ulrych, L. Voráček
{"title":"Fixing element with permanent magnet for transport of rails","authors":"I. Doležel, M. Škopek, B. Ulrych, L. Voráček","doi":"10.1109/ELEKTRO.2012.6225693","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225693","url":null,"abstract":"A load-bearing transport element with permanent magnet for transport of rails is proposed. The element does not need any external source of energy and may be controlled by short current pulses delivered from an appropriate source fixed to the device. The paper presents the device and its mathematical model that is solved numerically. The results of an illustrative example are discussed.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127163087","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
Representation of saturation in transformer model used in wind turbines simulator 风力发电机模拟器中变压器模型饱和的表示
2012 ELEKTRO Pub Date : 2012-05-21 DOI: 10.1109/ELEKTRO.2012.6225638
L. Kalamen, P. Rafajdus, P. Sekerák, V. Hrabovcová
{"title":"Representation of saturation in transformer model used in wind turbines simulator","authors":"L. Kalamen, P. Rafajdus, P. Sekerák, V. Hrabovcová","doi":"10.1109/ELEKTRO.2012.6225638","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225638","url":null,"abstract":"Mathematical model of transformer saturation usually employs a variable magnetizing inductance. This paper presents a novel method of magnetizing inductance determination of a transformer using simulation of the transformer at no load. The proposed method is based on a comparison between the data gained from no-load test (RMS values of voltage and current) and adequate data calculated in the simulation. Simulation results presented at the end of this paper show a good correspondence with the measurement on three-phase two-winding transformer and hence prove the correctness of this method.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131770499","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
Influence of remanent magnetization on the diagnostic of distribution 25MVA transformer by SFRA method 剩余磁化对SFRA法诊断配电25MVA变压器的影响
2012 ELEKTRO Pub Date : 2012-05-21 DOI: 10.1109/ELEKTRO.2012.6225667
J. Sedlák, M. Brandt, R. Seewald
{"title":"Influence of remanent magnetization on the diagnostic of distribution 25MVA transformer by SFRA method","authors":"J. Sedlák, M. Brandt, R. Seewald","doi":"10.1109/ELEKTRO.2012.6225667","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225667","url":null,"abstract":"This paper deals with the influence of core magnetization on its frequency response analysis. Remanent magnetization is a characteristic property of ferromagnetic materials. The core can aquire different value of remanent magnetization in the process of diagnostic measurements. This fact is very important from the point of view of good representation of results from measurements. In the past, there was made a couple of measurements on 3-phase dry transformer (3000VA). In the present the measurements were done on distribution 25MVA transformer in order to confirm an influence of remanent magnetization on SFRA measurements.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133375613","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: 13
The object recognition based on Scale-Invariant feature transform and hybrid segmentation 基于尺度不变特征变换和混合分割的目标识别
2012 ELEKTRO Pub Date : 2012-05-21 DOI: 10.1109/ELEKTRO.2012.6225582
M. Zachariasova, R. Hudec, M. Benco, P. Kamencay
{"title":"The object recognition based on Scale-Invariant feature transform and hybrid segmentation","authors":"M. Zachariasova, R. Hudec, M. Benco, P. Kamencay","doi":"10.1109/ELEKTRO.2012.6225582","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225582","url":null,"abstract":"This paper deals with research in the area of image analysis. Our approach is based on hybrid segmentation and Scale-Invariant Feature Transform (SIFT) method. The main idea is to improve the process of object recognition and their classification into classes by Support Vector Machine (SVM) classifier. The fast and powerful hybrid segmentation algorithm based on Mean Shift and Believe Propagation principles is used to improve object classification. Finally, the image segmentation algorithm was integrated with SIFT descriptor. The developed method was tested on real unsegmented and segmented images.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129296175","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
Wind power electrical drives for permanent magnet generators — Development in Finland 用于永磁发电机的风力电力驱动装置-芬兰的开发
2012 ELEKTRO Pub Date : 2012-05-21 DOI: 10.1109/ELEKTRO.2012.6225593
J. Pyrhonen, Y. Alexandrova, R. S. Semken, H. Hamalainen
{"title":"Wind power electrical drives for permanent magnet generators — Development in Finland","authors":"J. Pyrhonen, Y. Alexandrova, R. S. Semken, H. Hamalainen","doi":"10.1109/ELEKTRO.2012.6225593","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225593","url":null,"abstract":"The use of permanent magnets offers freedom in machine design and the highest possible efficiencies for wind power machines. Although full power converters must be used with permanent magnet machines, these converters make it possible to fulfill even the strictest grid codes. If appropriate care is taken in selecting the exact magnetic material composition, Neodymium-Iron-Boron magnets are compatible with long term generator use. However, rare earth material prices have been so volatile lately that highpower applications using lower strength ferrite magnet materials are being studied. For wind power applications, the three basic types of PM generator include direct-drive generators (10-20 min-1), medium-speed generators (100-300 min-1), and high-speed generators (1000-2000 min-1). Finnish companies such as Neorem Magnets, ABB, and The Switch have been very active in the development of permanent magnet technology for wind power. Moreover, Finnish wind turbine manufacturers operating today use the most modern PM technologies in their products.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131230397","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
Investigation of low frequency electromagnetic field influence on cell proliferation process 低频电磁场对细胞增殖过程影响的研究
2012 ELEKTRO Pub Date : 2012-05-21 DOI: 10.1109/ELEKTRO.2012.6225665
R. Radil, J. Barabas
{"title":"Investigation of low frequency electromagnetic field influence on cell proliferation process","authors":"R. Radil, J. Barabas","doi":"10.1109/ELEKTRO.2012.6225665","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225665","url":null,"abstract":"The presented article deals with the mechanisms of low frequency electromagnetic field impact to biological structures. Special attention is paid to the theories describing the influence of applied electromagnetic field to microtubule structures and ions bounded on the cell membrane surface. These theories are confronted with the experiments conducted on the eukaryotic cells represented by saccharomyces cerevisiae. The results and findings are discussed in conclusion.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132417097","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
Electronic signalling systems as a part of conventional tracks modernisation 电子信号系统作为传统轨道现代化的一部分
2012 ELEKTRO Pub Date : 2012-05-21 DOI: 10.1109/ELEKTRO.2012.6225684
K. Rástočný, P. Nagy
{"title":"Electronic signalling systems as a part of conventional tracks modernisation","authors":"K. Rástočný, P. Nagy","doi":"10.1109/ELEKTRO.2012.6225684","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225684","url":null,"abstract":"Within the context of railway lines modernization and ETCS building on Slovak railways, interlocking and track blocking systems are being modernized too. Old control systems based on mechanical or relay logic are replaced by electronic systems. Safety of electronic systems is based on different principles in comparison with relay or mechanical systems. It means that it is necessary to change approach to safety requirements definition and safety evaluation of electronic systems. Due to requirements for high safety integrity level (SIL) of a signalling system, it is impossible to prove its safety by tests only, but there must be appropriate theoretical methods for quantitative safety analysis applied. Safety related functions of interlocking system and the associated tolerable hazard rate (THR) are defined on the base of risk analysis.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133046324","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
Static and dynamic fault analysis of Switched Reluctance Motor 开关磁阻电机静态与动态故障分析
2012 ELEKTRO Pub Date : 2012-05-21 DOI: 10.1109/ELEKTRO.2012.6225639
V. Kacenka, P. Rafajdus, P. Makys, V. Vavrúš, L. Szabó
{"title":"Static and dynamic fault analysis of Switched Reluctance Motor","authors":"V. Kacenka, P. Rafajdus, P. Makys, V. Vavrúš, L. Szabó","doi":"10.1109/ELEKTRO.2012.6225639","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225639","url":null,"abstract":"This paper deals with static and dynamic analysis of the Switched Reluctance Motor (SRM) under fault operating conditions. The static analysis is carried out by means of Finite Element Method (FEM) to investigate static parameters of the SRM for health and some defined faults of the phases. These static parameters are used in the dynamic model of the SRM and some transients are simulated for normal condition and also for fault operation. The comparison with experimental results is presented.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122209627","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信