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2016 ELEKTRO最新文献

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Control of single-phase grid connected inverter system 单相并网逆变系统的控制
2016 ELEKTRO Pub Date : 2016-05-16 DOI: 10.1109/ELEKTRO.2016.7512066
J. Šedo, S. Kaščák
{"title":"Control of single-phase grid connected inverter system","authors":"J. Šedo, S. Kaščák","doi":"10.1109/ELEKTRO.2016.7512066","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512066","url":null,"abstract":"In this paper, an implementation of the control and the synchronization algorithms for a Voltage Source Inverter used in a grid-connected structure is carried out. The main purpose is to show the combined operation of the control and synchronization algorithm for achieving the proper behavior of the grid inverter for the single phase utility grid system. In order to obtain a proper functionality of the system during perturbation, a proportional integral controller structure along with Second Order Generalized Integrator Phase-Locked Loop (SOGI PLL) is designed and used as synchronization algorithm. Also, the aim is to control power factor at grid, to feed power into the grid, and to decrease phase current distortion of VSI. Secondly, the design of third order LCL output filter will be proposed in this paper. The results of simulations of the inverter system connected to grid (220V, 50 Hz) using MATLAB/Simulink are also shown. Simulation results confirms that the grid input power factor is nearly unity, and the distortion of phase current of the proposed system is reduced, causing the total harmonic distortion for various power conditions falls within 5%.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129432166","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: 17
WDM networks fuzzy logic optimization WDM网络模糊逻辑优化
2016 ELEKTRO Pub Date : 2016-05-16 DOI: 10.1109/ELEKTRO.2016.7512032
M. Ďulík, G. Cibira
{"title":"WDM networks fuzzy logic optimization","authors":"M. Ďulík, G. Cibira","doi":"10.1109/ELEKTRO.2016.7512032","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512032","url":null,"abstract":"This article brings new approach exploiting fuzzy logic optimization of data transfer in fast WDM optical networks. In order to reach effective optimization, control system evaluates several link parameters and finds the most appropriate data transfer path. In a WDM network, each available link disposing several wavelengths is considered. Not only basic link state parameters are considered in the control system, but also additional parameters like current utilization and maximum available capacity over a link or wavelength. Proposed optimization model highly increases overall network throughput, providing higher efficiency for telecommunication providers.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121774319","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
Cross-correlation technique for revealing defects in differential pulsed eddy current defectoscopy 差示脉冲涡流缺陷镜中缺陷显示的互相关技术
2016 ELEKTRO Pub Date : 2016-05-16 DOI: 10.1109/ELEKTRO.2016.7512157
Karel Slobodnik, P. Karban
{"title":"Cross-correlation technique for revealing defects in differential pulsed eddy current defectoscopy","authors":"Karel Slobodnik, P. Karban","doi":"10.1109/ELEKTRO.2016.7512157","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512157","url":null,"abstract":"The utilization of the cross-correlation technique in pulsed eddy current testing is described and illustrated with an example of an artificial defect in an electrically conductive steel plate. The investigated eddy current probe is of a differential type, consisting of one excitation and two sensing coils with a ferrite magnetic circuit. The numerical solution is carried out in the COMSOL Multiphysics using Magnetic field and Electrical circuit modules. The results are verified by performing laboratory experiment. Important aspects of the cross-correlation in the pulsed eddy current testing are then analyzed and discussed.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126248713","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
Novel control strategy of traction converter with medium frequency transformer 带中频变压器的牵引变换器控制新策略
2016 ELEKTRO Pub Date : 2016-05-16 DOI: 10.1109/ELEKTRO.2016.7512076
B. Bednár, P. Drábek, M. Pittermann
{"title":"Novel control strategy of traction converter with medium frequency transformer","authors":"B. Bednár, P. Drábek, M. Pittermann","doi":"10.1109/ELEKTRO.2016.7512076","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512076","url":null,"abstract":"This paper describes research into a novel control strategy of traction converter for the AC-Trolley Line with the medium frequency transformer (MFT). Attention is given to the problematics of finding a suitable control algorithm that will provide minimal magnetic saturation of MFT. This could be ensured by variable voltage pulses on MFT input defined by the control algorithm to ensure proper MFT saturation. Special attention is focused on the single-phase matrix converter topology and the best commutation solution. Two basic methods of switch control of the matrix converter are discussed. The first method requires the knowledge of the converter output current polarity and the second method assumes the knowledge of the input voltage polarity. In addition, the article describes the switching method in uncertain states - when the voltage or current cross zero. Moreover, the paper presents a new modular topology with several separate medium frequency transformers. The proposed algorithm is described and implemented in the experimental model.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126252774","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
Application of correlation receiver on the RFID marker localization signals 相关接收机在RFID标记定位信号中的应用
2016 ELEKTRO Pub Date : 2016-05-16 DOI: 10.1109/ELEKTRO.2016.7512114
T. Mravec, P. Vestenický, M. Hruboš
{"title":"Application of correlation receiver on the RFID marker localization signals","authors":"T. Mravec, P. Vestenický, M. Hruboš","doi":"10.1109/ELEKTRO.2016.7512114","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512114","url":null,"abstract":"This paper deals with the application of correlation receiver and matched filter for the processing of the signals received from passive markers during their localization. The markers are single bit RFID transponders buried under the ground surface to mark the position of cables and pipes. A simulation model of locator - marker system created in the Multisim software is used to obtain the ideal (reference) signals from the markers. These signals are then used as basis function for calculation of cross-correlation with the real signals received from the markers and recorded by a digital oscilloscope for off-line processing. Moreover, from the ideal signal the impulse response needed for the matched filter design was derived and the matched filter was used to process the real recorded signals.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"211 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125770883","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
Optimization of the reluctance synchronous motor with barriers rotor 磁阻障转子同步电动机的优化设计
2016 ELEKTRO Pub Date : 2016-05-16 DOI: 10.1109/ELEKTRO.2016.7512100
M. Šebest, V. Hrabovcová, P. Makys
{"title":"Optimization of the reluctance synchronous motor with barriers rotor","authors":"M. Šebest, V. Hrabovcová, P. Makys","doi":"10.1109/ELEKTRO.2016.7512100","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512100","url":null,"abstract":"The paper deals with optimization of the reluctance synchronous motor design from the point of view of shape and barrier number on its rotor. Two models of rotors are developed, both with the same stator: the first one A with barriers of equal width, parallel to each other. The optimal number of barriers is investigated. The second one B with barriers following the shape of the magnetic force-lines in the solid sheet. The optimal number of barriers and their shape is investigated from the point of view of inductance ratio Ld/Lq and their difference (Ld - Lq) to develop as high torque, power, power factor, and efficiency as possible. The model B with five barriers was chosen.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133609776","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
Concept and design of a special purpose permanent magnet synchronous motor 专用永磁同步电机的概念与设计
2016 ELEKTRO Pub Date : 2016-05-16 DOI: 10.1109/ELEKTRO.2016.7512056
K. Hruska, V. Kindl, T. Komrska, R. Pechánek, L. Streit
{"title":"Concept and design of a special purpose permanent magnet synchronous motor","authors":"K. Hruska, V. Kindl, T. Komrska, R. Pechánek, L. Streit","doi":"10.1109/ELEKTRO.2016.7512056","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512056","url":null,"abstract":"This paper deals with design of a permanent magnet synchronous motor for an electric kart. For the purpose of maximal mass savings the motor is designed as a high-speed machine, whose torque will be transferred to the wheels by a belt. According to the placement of the machine in the kart a suitable cooling method is proposed. The paper presents its electromagnetic, thermal and cooling design with results obtained using applicable numeric methods.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134519404","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
FEM electromagnetic simulation and operational testing of the Adams electric D.C. motor-generator Adams直流电机发电机的有限元电磁仿真与运行试验
2016 ELEKTRO Pub Date : 2016-05-16 DOI: 10.1109/ELEKTRO.2016.7512090
M. Koutny, P. Kačor, Petr Bernat, Tomás Pavelek
{"title":"FEM electromagnetic simulation and operational testing of the Adams electric D.C. motor-generator","authors":"M. Koutny, P. Kačor, Petr Bernat, Tomás Pavelek","doi":"10.1109/ELEKTRO.2016.7512090","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512090","url":null,"abstract":"This paper focuses on description of the operation principle inherent to the Adams' electric motor-generator fitted with permanent magnets made of rare earth (NdFeB). For checking of the basic design we have used the FEM electromagnetic simulation made by Ansys Workbench and Ansys Maxwell. The Adams' motor generator is basically assembled with slight deviations from the original patent with respect to the stator magnetic circuit design. The resultant speed-torque characteristics obtained by measurement and the input power values have been processed to determine the machine's efficiency.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131829593","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
Study of thermal aging of mixture of transformer insulating liquids 变压器绝缘液混合物热老化研究
2016 ELEKTRO Pub Date : 2016-05-16 DOI: 10.1109/ELEKTRO.2016.7512159
N. Zhuravleva, A. Reznik, D. Kiesewetter
{"title":"Study of thermal aging of mixture of transformer insulating liquids","authors":"N. Zhuravleva, A. Reznik, D. Kiesewetter","doi":"10.1109/ELEKTRO.2016.7512159","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512159","url":null,"abstract":"The thermal aging of the transformer oils mixtures were investigated. Tangent of dielectric loss angle, the spectral transmittance and fluorescence of samples of mixture of the insulating liquids were measured. The changes in optical and electrical characteristics as a function of the concentration of mixed oils were determined. The measurement results are compared with the theoretical dependencies.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122231973","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
Numerical analysis for reducing negative impact of power transformers on the environment 减少电力变压器对环境负面影响的数值分析
2016 ELEKTRO Pub Date : 2016-05-16 DOI: 10.1109/ELEKTRO.2016.7512135
L. Koudela, F. Mach, P. Karban, R. Kroft, O. Tureček, M. Schlosser, M. Sykora
{"title":"Numerical analysis for reducing negative impact of power transformers on the environment","authors":"L. Koudela, F. Mach, P. Karban, R. Kroft, O. Tureček, M. Schlosser, M. Sykora","doi":"10.1109/ELEKTRO.2016.7512135","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512135","url":null,"abstract":"The goal of this paper is to present a methodology for numerical analysis of 3D numerical model of a transformer for reducing negative noise impact on the environment. The task is to map structural dynamics and vibrations of its selected parts. The main aim of this paper is to describe the numerical analysis of natural frequencies and demonstrate the impact of transformer construction in three-phase transformer core. The model taking into account the real arrangement of the device is solved numerically by the finite element method. All results are compared with experimental measurement on a real device.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115700007","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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