Pub Date : 2016-05-16DOI: 10.1109/ELEKTRO.2016.7512037
Perepelkin Dmitry Alexandrovich, Ivanchikova Maria Alexandrovna
In this paper we propose fast rerouting traffic algorithm between data centers (DC), increases the efficiency of adaptive routing process during dynamic load changes on the communication links.
本文提出了数据中心间流量快速重路由算法，提高了通信链路动态负载变化时自适应路由处理的效率。
{"title":"Fast rerouting traffic algorithm between data centers","authors":"Perepelkin Dmitry Alexandrovich, Ivanchikova Maria Alexandrovna","doi":"10.1109/ELEKTRO.2016.7512037","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512037","url":null,"abstract":"In this paper we propose fast rerouting traffic algorithm between data centers (DC), increases the efficiency of adaptive routing process during dynamic load changes on the communication links.","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":"121066021","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}
Pub Date : 2016-05-16DOI: 10.1109/ELEKTRO.2016.7512163
J. C̆erven̆ová, E. Králiková, M. Kamensky
The paper describes a new system for remote measurement experiment. This set of cooperating applications is designed in LabVIEW environment and uses Data Socket and Remote Panel technology. The system allows to measure with real instruments on experimental workplaces via Internet. Its specialty is a modular structure, when a pair of modules called GO and DO module is needed for remote operation. The GO module distributes measured data over the network. The workplace is managed by a DO module. The designer of a new workplace needs only to develop the application of DO module itself. Hence our modular system simplifies and unifies design of remote accessed workplaces with higher level of software security. The attention is focused on designed superior GO module. There is also described the application DO module which was created to testify the functionality of the system.
{"title":"Modular software system of remote applications","authors":"J. C̆erven̆ová, E. Králiková, M. Kamensky","doi":"10.1109/ELEKTRO.2016.7512163","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512163","url":null,"abstract":"The paper describes a new system for remote measurement experiment. This set of cooperating applications is designed in LabVIEW environment and uses Data Socket and Remote Panel technology. The system allows to measure with real instruments on experimental workplaces via Internet. Its specialty is a modular structure, when a pair of modules called GO and DO module is needed for remote operation. The GO module distributes measured data over the network. The workplace is managed by a DO module. The designer of a new workplace needs only to develop the application of DO module itself. Hence our modular system simplifies and unifies design of remote accessed workplaces with higher level of software security. The attention is focused on designed superior GO module. There is also described the application DO module which was created to testify the functionality of the system.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"14 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":"125989373","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}
Pub Date : 2016-05-16DOI: 10.1109/ELEKTRO.2016.7512088
S. Kocman, Tomas Hruby, P. Pečínka, A. Neumann
This paper presents a time-dependent simulation of three-phase squirrel cage asynchronous motor using COMSOL Multiphysics software. Simulation was made for constant rotational velocity adjusted to the nominal one of the tested motor. The course of stator currents and motor torque is shown and their values are compared to their catalogue ones and values obtained from motor measurements. As seen, the simulation results match the catalogue values or measured results rather well.
{"title":"FEM model of asynchronous motor for analysis of its parameters","authors":"S. Kocman, Tomas Hruby, P. Pečínka, A. Neumann","doi":"10.1109/ELEKTRO.2016.7512088","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512088","url":null,"abstract":"This paper presents a time-dependent simulation of three-phase squirrel cage asynchronous motor using COMSOL Multiphysics software. Simulation was made for constant rotational velocity adjusted to the nominal one of the tested motor. The course of stator currents and motor torque is shown and their values are compared to their catalogue ones and values obtained from motor measurements. As seen, the simulation results match the catalogue values or measured results rather well.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"53 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":"131288691","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}
Pub Date : 2016-05-16DOI: 10.1109/ELEKTRO.2016.7512080
P. Butko, J. Vittek, T. Fedor, Ľ. Struharňanský
Document describes energy consumption reducing of servo drive with asynchronous motor depending on size and character of the load. Control algorithm is designed using optimal control theory and takes into account the Joules and mechanical losses. Algorithm functionality is tested by simulation.
{"title":"Reducing energy consumption of servo drive with induction motor","authors":"P. Butko, J. Vittek, T. Fedor, Ľ. Struharňanský","doi":"10.1109/ELEKTRO.2016.7512080","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512080","url":null,"abstract":"Document describes energy consumption reducing of servo drive with asynchronous motor depending on size and character of the load. Control algorithm is designed using optimal control theory and takes into account the Joules and mechanical losses. Algorithm functionality is tested by simulation.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"19 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":"130700937","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}
Pub Date : 2016-05-16DOI: 10.1109/ELEKTRO.2016.7512064
M. Paskala, M. Pridala, M. Pipíška, P. Hudák
The article deals with the design of a liquid automated cooling/heating system which is designed as the support system that enables the testing of power semiconductor converters in the various temperature regimes. The basic function of the system is to maintain of the temperature of the cooling/heating medium in the required ranges. The article consists of the proposal of hydraulic circuit, the proposal of power electronics, the proposal of motion control and HMI interface. In the conclusion there are mentioned the results of realized measurements on the physical device and they are confronted with theoretical assumptions.
{"title":"The support system for testing the power converters: The system of water cooling / heating","authors":"M. Paskala, M. Pridala, M. Pipíška, P. Hudák","doi":"10.1109/ELEKTRO.2016.7512064","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512064","url":null,"abstract":"The article deals with the design of a liquid automated cooling/heating system which is designed as the support system that enables the testing of power semiconductor converters in the various temperature regimes. The basic function of the system is to maintain of the temperature of the cooling/heating medium in the required ranges. The article consists of the proposal of hydraulic circuit, the proposal of power electronics, the proposal of motion control and HMI interface. In the conclusion there are mentioned the results of realized measurements on the physical device and they are confronted with theoretical assumptions.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"112 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":"117260353","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}
Pub Date : 2016-05-16DOI: 10.1109/ELEKTRO.2016.7512059
S. Kaščák, T. Laskody, M. Praženica, R. Koňarik
The paper deals with conventional control of a single-leg voltage source inverter loaded by a single-phase induction motor and its improvement by current control loop applied at reduced speed operation. Current control brings a major improvement of current quality and better behavior of motor as well. Previous statement was experimentally verified and its comparison is given in the paper as well.
{"title":"Current control contribution to a single-phase induction motor fed by single-leg voltage source inverter","authors":"S. Kaščák, T. Laskody, M. Praženica, R. Koňarik","doi":"10.1109/ELEKTRO.2016.7512059","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512059","url":null,"abstract":"The paper deals with conventional control of a single-leg voltage source inverter loaded by a single-phase induction motor and its improvement by current control loop applied at reduced speed operation. Current control brings a major improvement of current quality and better behavior of motor as well. Previous statement was experimentally verified and its comparison is given in the paper as well.","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":"129201348","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}
Pub Date : 2016-05-16DOI: 10.1109/ELEKTRO.2016.7512099
L. Streit, J. Talla
Performance of future electric traction systems can be improved by energy storage system (ESS). Using of ESS is not advantageous in all cases. Additional losses always occur during the ESS operation. If saved energy is relatively low in comparison with these losses, the return of investment will not be reached. This paper is focused on energy storage on-board tram vehicle. Return on investment determination is not trivial for multi-source/load systems like a tram. The main emphasis of proposed research is given to the energy savings in dependency on recuperation ratio in tram line. One of main energy savings influencing factors is power management (PM) strategy of ESS. Therefore five PM strategies were taken in to account for energy savings calculation. Four of PM strategies are basic and one is more sophisticated. This sophisticated strategy is based on the Takagi-Sugeno Fuzzy controller (T-S Fuzzy). T-S Fuzzy strategy uses knowledge of the tram line and tram position by GPS. All these strategies were simulated at the same tram line via stochastic tram line model.
{"title":"Energy storage savings depended on recuperation ratio in traction","authors":"L. Streit, J. Talla","doi":"10.1109/ELEKTRO.2016.7512099","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512099","url":null,"abstract":"Performance of future electric traction systems can be improved by energy storage system (ESS). Using of ESS is not advantageous in all cases. Additional losses always occur during the ESS operation. If saved energy is relatively low in comparison with these losses, the return of investment will not be reached. This paper is focused on energy storage on-board tram vehicle. Return on investment determination is not trivial for multi-source/load systems like a tram. The main emphasis of proposed research is given to the energy savings in dependency on recuperation ratio in tram line. One of main energy savings influencing factors is power management (PM) strategy of ESS. Therefore five PM strategies were taken in to account for energy savings calculation. Four of PM strategies are basic and one is more sophisticated. This sophisticated strategy is based on the Takagi-Sugeno Fuzzy controller (T-S Fuzzy). T-S Fuzzy strategy uses knowledge of the tram line and tram position by GPS. All these strategies were simulated at the same tram line via stochastic tram line model.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"2 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":"134470492","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}
Pub Date : 2016-05-16DOI: 10.1109/ELEKTRO.2016.7512063
R. Mazgut, M. Galád, S. Kaščák, P. Spánik
The paper deals with the analysis of LLCLC converter. It is a resonant converter which was derived of the LLC converter. The difference between is in adding a notch filter to the resonant circuit. This article focuses mainly on the mathematical analysis of the resonant circuit. In the first part it is discussed about the voltage transfer function of the converter and further we focus on the analysis of the resonant frequencies of the filter. In conclusion, the discovered relationships are applied to the design of LLC converter.
{"title":"Analysis of multi-resonant LLCLC converter","authors":"R. Mazgut, M. Galád, S. Kaščák, P. Spánik","doi":"10.1109/ELEKTRO.2016.7512063","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512063","url":null,"abstract":"The paper deals with the analysis of LLCLC converter. It is a resonant converter which was derived of the LLC converter. The difference between is in adding a notch filter to the resonant circuit. This article focuses mainly on the mathematical analysis of the resonant circuit. In the first part it is discussed about the voltage transfer function of the converter and further we focus on the analysis of the resonant frequencies of the filter. In conclusion, the discovered relationships are applied to the design of LLC converter.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"288 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":"133661815","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}
Pub Date : 2016-05-16DOI: 10.1109/ELEKTRO.2016.7512137
Terézia Kvasnicová, I. Kremenova, B. Babušiak
This paper describes an investigation of the brain activity during browsing websites. The study was carried out at the University of Žilina in Slovakia. Data, in the form of scan path from eye tracking and signal from Electroencephalograph, were collected and analysed. The researchers found higher brain activity only during decision making processes. During browsing websites there was no clearly increased brain activity. The findings suggested that visual stimuli of website might have had a bearing on the human active thinking, but it could not be clearly identified. The results also supported the notion that the internet users do not read the websites.
{"title":"Investigation of the brain activity during browsing websites","authors":"Terézia Kvasnicová, I. Kremenova, B. Babušiak","doi":"10.1109/ELEKTRO.2016.7512137","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512137","url":null,"abstract":"This paper describes an investigation of the brain activity during browsing websites. The study was carried out at the University of Žilina in Slovakia. Data, in the form of scan path from eye tracking and signal from Electroencephalograph, were collected and analysed. The researchers found higher brain activity only during decision making processes. During browsing websites there was no clearly increased brain activity. The findings suggested that visual stimuli of website might have had a bearing on the human active thinking, but it could not be clearly identified. The results also supported the notion that the internet users do not read the websites.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"15 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":"134392796","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}
Pub Date : 2016-05-16DOI: 10.1109/ELEKTRO.2016.7512054
M. Frivaldský, P. Drgona, B. Kozacek, M. Piri, M. Pridala
The paper deals with FoM parameter analysis of power semiconductor system's components. This parameter can be used as optimization tool of quality indicators for power supply systems. The main advantage of using FoM assessment technique for certain system's components is the elimination of simulation and physical experiments for effectivity evaluation. This paper consist of description of FoM assessment process for perspective converter structures, for various working conditions and the appropriateness of using this method is also verified by simulation experiments on models with high degree of validity. The relevancy of FoM parameter is finally evaluated in the way of efficiency (one of qualitative indicators) investigation of proposed LLC converter, where also different materials of core transformers have been verified, as well as their influence on the efficiency.
{"title":"Critical component's figure of merite influence on power supply unit efficiency","authors":"M. Frivaldský, P. Drgona, B. Kozacek, M. Piri, M. Pridala","doi":"10.1109/ELEKTRO.2016.7512054","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2016.7512054","url":null,"abstract":"The paper deals with FoM parameter analysis of power semiconductor system's components. This parameter can be used as optimization tool of quality indicators for power supply systems. The main advantage of using FoM assessment technique for certain system's components is the elimination of simulation and physical experiments for effectivity evaluation. This paper consist of description of FoM assessment process for perspective converter structures, for various working conditions and the appropriateness of using this method is also verified by simulation experiments on models with high degree of validity. The relevancy of FoM parameter is finally evaluated in the way of efficiency (one of qualitative indicators) investigation of proposed LLC converter, where also different materials of core transformers have been verified, as well as their influence on the efficiency.","PeriodicalId":369251,"journal":{"name":"2016 ELEKTRO","volume":"74 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":"134066284","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}
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