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2016 ELEKTRO最新文献

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Frequency control in smart grids based on renewables vs. ENSTO-E grid code requirements 基于可再生能源与ENSTO-E电网规范要求的智能电网频率控制
2016 ELEKTRO Pub Date : 2016-05-16 DOI: 10.1109/ELEKTRO.2016.7512092
M. Latkova, P. Braciník, M. Baherník, Sandra Krollová
{"title":"Frequency control in smart grids based on renewables vs. ENSTO-E grid code requirements","authors":"M. Latkova, P. Braciník, M. Baherník, Sandra Krollová","doi":"10.1109/ELEKTRO.2016.7512092","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512092","url":null,"abstract":"The paper presents the operation and frequency control in the Smart Grid region during overfrequency. The studied region consists of a PV power plant, a conventional source represented by a small synchronous generator with the speed controller and a load. The frequency control defined by the recent ENTSO-E Grid Code for generating units of type B is applied on the PV power plant operation and the influence of such control on frequency changes is studied. Obtained simulation results are used to outline a possible solution for future Smart Grid regions' frequency control.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"5 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":"131648355","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
Software for determining the quality of an exam test 用于确定考试测试质量的软件
2016 ELEKTRO Pub Date : 2016-05-16 DOI: 10.1109/ELEKTRO.2016.7512166
Vaclav Svoboda, J. Marek, J. Brozek
{"title":"Software for determining the quality of an exam test","authors":"Vaclav Svoboda, J. Marek, J. Brozek","doi":"10.1109/ELEKTRO.2016.7512166","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512166","url":null,"abstract":"Theory of reliability and mathematical statistics provides us tools for monitoring the quality of a test. Using methodologies often covers estimation of validity, reliability and transparency. Of course quality tests depend on quality learning objectives and difficulty of questions. Such a study adds another dimension to perception of the causes of poor test results. Even though many authors warn about these criteria, these tools can provide useful information to the teacher. This paper presents the developed software for quality of test evaluation. The evaluation is carried out using real data sets describing test evaluation of the course Probability and Statistics at the Faculty of electrical engineering and informatics, University of Pardubice.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"147 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":"116085410","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
Sensorless control of induction motor drive using BEMF-MRAS with Kalman filter 带卡尔曼滤波的BEMF-MRAS感应电机无传感器控制
2016 ELEKTRO Pub Date : 2016-05-16 DOI: 10.1109/ELEKTRO.2016.7512049
P. Brandstetter, Marek Dobrovsky, Ondrej Petrtyl, C. Dong, Hau Huu Vo
{"title":"Sensorless control of induction motor drive using BEMF-MRAS with Kalman filter","authors":"P. Brandstetter, Marek Dobrovsky, Ondrej Petrtyl, C. Dong, Hau Huu Vo","doi":"10.1109/ELEKTRO.2016.7512049","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512049","url":null,"abstract":"The paper deals with a speed estimation of the induction motor using observer with back electromotive force based model reference adaptive system and Kalman filter. The first part of the paper includes the mathematical description of the rotor speed observer. The second part describes Kalman filter that is used for the filtration of measured stator currents and obtaining their time derivatives. The third part describes a laboratory stand with the induction motor drive and active load unit that was used for an experimental verification of the rotor speed observer. In the last section of the paper, experimental results are shown for different changes of the induction motor speed which confirm good dynamic properties of the induction motor drive with sensorless control.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"239 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":"123888233","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
Cross phase modulation switching in chalcogenide fibre Bragg grating 硫族光纤布拉格光栅中的交叉相位调制开关
2016 ELEKTRO Pub Date : 2016-05-16 DOI: 10.1109/ELEKTRO.2016.7512156
L. Scholtz, L. Ladanyi, J. Mullerová
{"title":"Cross phase modulation switching in chalcogenide fibre Bragg grating","authors":"L. Scholtz, L. Ladanyi, J. Mullerová","doi":"10.1109/ELEKTRO.2016.7512156","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512156","url":null,"abstract":"In this paper we have numerically analyzed the application of nonlinear fiber Bragg gratings as promising tools for all optical processing governed by third-order nonlinear optical parameters of chalcogenide glasses. The possibility of changing transmission properties of the grating via the cross phase modulation (XPM) between the probe and pump signal has been shown. Several cases of switching the probe signal controlled by the pump have been presented. The schematic illustration of the switch based on nonlinear fiber Bragg gratings has been also presented. For the numerical simulations the time domain - transfer matrix method (TD-TMM) has been used.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"43 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":"122999867","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
Comparison of common and combined state of charge estimation methods for VRLA batteries VRLA蓄电池常用和组合充电状态估计方法的比较
2016 ELEKTRO Pub Date : 2016-05-16 DOI: 10.1109/ELEKTRO.2016.7512069
M. Galád, P. Spánik, M. Cacciato, G. Nobile
{"title":"Comparison of common and combined state of charge estimation methods for VRLA batteries","authors":"M. Galád, P. Spánik, M. Cacciato, G. Nobile","doi":"10.1109/ELEKTRO.2016.7512069","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512069","url":null,"abstract":"Electrochemical batteries play a key role in electrical and electronics devices such are laptops, cellphones, electric cars, etc. Battery packs in devices having higher power are still too much expensive for wide applications. To achieve an effective exploitation of battery packs it is important to have a robust and reliable battery management. Accurate State of Charge estimation in battery management is the basis of economical and energy performance assessment of battery pack including lifetime extension. The most popular used State of Charge estimation methods are analyzed and compared in this paper including Kalman filter approach. An interesting option is also a combination of two or more methods to achieve effective estimation with acceptable computational demands. Self-learning algorithms such as Neural Networks, Fuzzy Logic or Support Vector Machine are not included in this comparison since these methods need large amount of training data. The goal of this paper is the selection of accurate and simple SOC method suitable for battery pack used in stand-alone energy system.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"41 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":"123272227","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: 22
Dynamic emulation of mechanical loads — Analysis and implementation into industrial drive 机械负载的动态仿真。工业驱动的分析和实现
2016 ELEKTRO Pub Date : 2016-05-16 DOI: 10.1109/ELEKTRO.2016.7512072
L'uboš Suchý, Karol Kyslan, Ž. Ferková, F. Ďurovský
{"title":"Dynamic emulation of mechanical loads — Analysis and implementation into industrial drive","authors":"L'uboš Suchý, Karol Kyslan, Ž. Ferková, F. Ďurovský","doi":"10.1109/ELEKTRO.2016.7512072","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512072","url":null,"abstract":"The paper presents an approach to the dynamic emulation of mechanical loads. The main goal was to implement known control algorithm to the industrial converter SINAMICS S120 with the control unit CU320 using Drive Control Chart programming tool. The reference torque of a load machine is calculated through the closed-loop control algorithm using PI estimator. Proposed implementation enables the user the emulation of various mechanical loads with the industrial drive dynamometer, although only variation of the inertia and the viscous friction is reported here.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"29 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":"126454618","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
Detection of door's components in automotive industry by simple image processing 基于简单图像处理的汽车门部件检测
2016 ELEKTRO Pub Date : 2016-05-16 DOI: 10.1109/ELEKTRO.2016.7512052
F. Duchoň, Andrej Babinec, Martin Dekan, J. Rodina, Zuzana Mikulova, M. Szabová, Michal Lisican
{"title":"Detection of door's components in automotive industry by simple image processing","authors":"F. Duchoň, Andrej Babinec, Martin Dekan, J. Rodina, Zuzana Mikulova, M. Szabová, Michal Lisican","doi":"10.1109/ELEKTRO.2016.7512052","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512052","url":null,"abstract":"Aim of this article is the implementation of simple image processing in the inspection process. The inspection process is focused on door components in automotive industry. Article describes the needs of such process, implementation of solution and evaluation of results. Final application is based on OpenCV library and its components. Moreover, the process is optimized for real inspection system and it was tested in this system.","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":"130103096","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
Accurate wild animal recognition using PCA, LDA and LBPH 基于PCA、LDA和LBPH的野生动物准确识别
2016 ELEKTRO Pub Date : 2016-05-16 DOI: 10.1109/ELEKTRO.2016.7512036
P. Kamencay, Tibor Trnovszký, M. Benco, R. Hudec, P. Sykora, Andrej Satnik
{"title":"Accurate wild animal recognition using PCA, LDA and LBPH","authors":"P. Kamencay, Tibor Trnovszký, M. Benco, R. Hudec, P. Sykora, Andrej Satnik","doi":"10.1109/ELEKTRO.2016.7512036","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512036","url":null,"abstract":"In this paper, the performances of image recognition methods such as Principal Component Analysis (PCA), Linear Discriminant Analysis (LDA) and Local Binary Patterns Histograms (LBPH) are tested and compared for the image recognition of the input animal images. The main idea of this paper is to present an independent, comparative study and some of the benefits and drawbacks of these most popular image recognition methods. Two sets of experiments are conducted for relative performance evaluations. In the first part of our experiments, the recognition accuracy of PCA, LDA and LBPH is demonstrated. The overall time execution for animal recognition process is evaluated in the second set of our experiments. We conduct tests on created animal database. The all algorithms have been tested on 300 different subjects (60 images for each class). The experimental result shows that the PCA features provide better results as LDA and LBPH for large training set. On the other hand, LBPH is better than PCA and LDA for small training data set.","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":"129614424","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: 23
Implementation of control algorithms for laboratory model of traction drive with high voltage matrix converters and medium frequency transformer 采用高压矩阵变换器和中频变压器的实验室模型牵引传动控制算法的实现
2016 ELEKTRO Pub Date : 2016-05-16 DOI: 10.1109/ELEKTRO.2016.7512077
B. Bednár, P. Drábek, M. Pittermann
{"title":"Implementation of control algorithms for laboratory model of traction drive with high voltage matrix converters and medium frequency transformer","authors":"B. Bednár, P. Drábek, M. Pittermann","doi":"10.1109/ELEKTRO.2016.7512077","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512077","url":null,"abstract":"This paper deals with problematic of realization and implementation of control algorithms for laboratory model of electric drive of traction drive with medium frequency transformer MFT supplied by high voltage matrix converter MC. Output (from secondary winding from MFT) is rectified by active rectifier and it used form voltage source rectifier. Control algorithms for these parts are implemented into digital system with digital signal processor. Practical using of this electric drive is possibility of reducing of mass of traction transformer in locomotives for system 15kV/16.7Hz and 25kV/50Hz etc.","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":"128708552","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
Application of the Montessori method in tercial education of a computer 3D graphics 蒙台梭利方法在计算机三维图形教学中的应用
2016 ELEKTRO Pub Date : 2016-05-16 DOI: 10.1109/ELEKTRO.2016.7512162
J. Brozek, Dan Hamernik, P. Veselý, Vaclav Svoboda
{"title":"Application of the Montessori method in tercial education of a computer 3D graphics","authors":"J. Brozek, Dan Hamernik, P. Veselý, Vaclav Svoboda","doi":"10.1109/ELEKTRO.2016.7512162","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512162","url":null,"abstract":"The current development in the area of computer graphics focuses itself on 3D visualization. This direction, set by contemporary trends, further utilizes 3D visualization, increases its quality and improves visualization devices for 3D graphics. This change must be reflected by teaching methods as well, through which future specialists of advanced graphics, modellers, but also programmers and implementation coders. The article presents its own software solution and innovative approach to teaching computer graphics. The solution and all principles are based on the Montessori method of child education.","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":"128839322","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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