Pub Date : 2012-05-21DOI: 10.1109/ELEKTRO.2012.6225625
T. Kapusta
This paper deal about application of EMI filters in photovoltaic converters. Photovoltaic converters in connection with photovoltaic panels present a relative new form of electric energy production. Using of photovoltaic technologies and their advantages are uncontested. Pure form of energy production with minimal environmental burden and many other benefits. As in every sector also in that area has EMC a great significance. Power semiconductor converter becomes a significant producer of electromagnetic pollution. Therefore should be paid no less attention to this area and invest not only time but also part of financials to this issue and develop new more effective ways to reduce the electromagnetic pollution.
{"title":"EMI filters for photovoltaic converters","authors":"T. Kapusta","doi":"10.1109/ELEKTRO.2012.6225625","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225625","url":null,"abstract":"This paper deal about application of EMI filters in photovoltaic converters. Photovoltaic converters in connection with photovoltaic panels present a relative new form of electric energy production. Using of photovoltaic technologies and their advantages are uncontested. Pure form of energy production with minimal environmental burden and many other benefits. As in every sector also in that area has EMC a great significance. Power semiconductor converter becomes a significant producer of electromagnetic pollution. Therefore should be paid no less attention to this area and invest not only time but also part of financials to this issue and develop new more effective ways to reduce the electromagnetic pollution.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"5 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":"115392962","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 : 2012-05-21DOI: 10.1109/ELEKTRO.2012.6225682
P. Petvaldsky, P. Bilik
The new concept of software systems solutions based on Web services is becoming more popular in information technology. The concept of "SaaS“ provides cost savings and eliminates the need for installation and operation of software on the user side. Especially for endusers this concept brings significant benefits. In engineering software applications it offers the possibility to use this concept for wide layer of users. One industry that is undergoing a dynamic expansion is the area of building management systems. Implementation of applications based on a "SaaS" can bring distinct advantages against common software solutions.
{"title":"The concept of application for intelligent building management on a \"SaaS\" platform","authors":"P. Petvaldsky, P. Bilik","doi":"10.1109/ELEKTRO.2012.6225682","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225682","url":null,"abstract":"The new concept of software systems solutions based on Web services is becoming more popular in information technology. The concept of \"SaaS“ provides cost savings and eliminates the need for installation and operation of software on the user side. Especially for endusers this concept brings significant benefits. In engineering software applications it offers the possibility to use this concept for wide layer of users. One industry that is undergoing a dynamic expansion is the area of building management systems. Implementation of applications based on a \"SaaS\" can bring distinct advantages against common software solutions.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"205 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":"115445032","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 : 2012-05-21DOI: 10.1109/ELEKTRO.2012.6225611
K. Kiraga, E. Szychta, L. Szychta
This paper presents a method of X-ray diffraction analysis used to obtain information on the phase composition of rail steel. Knowledge of the phase composition of railway rails allow for a thorough analysis of magnetic properties. Knowledge of basic magnetic properties of railway rail will be assisting in the of induction heating process simulation of railway turnouts. Induction heating process simulation allows to determinate distribution of magnetic induction and magnetic intensity across the rail itself and in its environment, and define a separate power in the rail to flow through it due eddy currents.
{"title":"Determination of rail steel's phase composition by means of X-ray diffraction analysis","authors":"K. Kiraga, E. Szychta, L. Szychta","doi":"10.1109/ELEKTRO.2012.6225611","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225611","url":null,"abstract":"This paper presents a method of X-ray diffraction analysis used to obtain information on the phase composition of rail steel. Knowledge of the phase composition of railway rails allow for a thorough analysis of magnetic properties. Knowledge of basic magnetic properties of railway rail will be assisting in the of induction heating process simulation of railway turnouts. Induction heating process simulation allows to determinate distribution of magnetic induction and magnetic intensity across the rail itself and in its environment, and define a separate power in the rail to flow through it due eddy currents.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"57 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":"114531536","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 : 2012-05-21DOI: 10.1109/ELEKTRO.2012.6225607
P. Holecko, E. Bubeníková, R. Pirník
The goal of this paper is to analyse, define, and summarise the requirements on networks connecting telematic technologies based on Intelligent Transport Systems (ITS). The paper describes the methodics of setting and a general concept of technological networks interface based on available and applicable standards Focus is set on data transmission in form of a video-stream and its tunnelling through xDSL transmission technology. Further the implementation of the designed compression algorithm and interface between open and technological-type networks is described. The summary describes a proposed subjective method for quality evaluation of transmitted video-flow for the needs of telematics supervision systems dispatchers.
{"title":"Communication systems in transport — Hybrid ITS interface","authors":"P. Holecko, E. Bubeníková, R. Pirník","doi":"10.1109/ELEKTRO.2012.6225607","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225607","url":null,"abstract":"The goal of this paper is to analyse, define, and summarise the requirements on networks connecting telematic technologies based on Intelligent Transport Systems (ITS). The paper describes the methodics of setting and a general concept of technological networks interface based on available and applicable standards Focus is set on data transmission in form of a video-stream and its tunnelling through xDSL transmission technology. Further the implementation of the designed compression algorithm and interface between open and technological-type networks is described. The summary describes a proposed subjective method for quality evaluation of transmitted video-flow for the needs of telematics supervision systems dispatchers.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"23 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":"115016160","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 : 2012-05-21DOI: 10.1109/ELEKTRO.2012.6225689
Jakub Wosyka, P. Pribyl
This paper presents a time travel estimation model based on a decision tree. The proposed model was tested on the most widely used arterial in Prague and also in the Czech Republic. This road section has many unmeasured inputs and outputs and with regards to only two detectors within a section it is difficult to estimate the travel time. A temporary installation of ALPR system is used for training the decision tree model which consequently provides reliable travel time estimation.
{"title":"Real-time travel time estimation on highways using loop detector data and license plate recognition","authors":"Jakub Wosyka, P. Pribyl","doi":"10.1109/ELEKTRO.2012.6225689","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225689","url":null,"abstract":"This paper presents a time travel estimation model based on a decision tree. The proposed model was tested on the most widely used arterial in Prague and also in the Czech Republic. This road section has many unmeasured inputs and outputs and with regards to only two detectors within a section it is difficult to estimate the travel time. A temporary installation of ALPR system is used for training the decision tree model which consequently provides reliable travel time estimation.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"1 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":"130152401","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 : 2012-05-21DOI: 10.1109/ELEKTRO.2012.6225633
J. Faber
Resolver sensor is utilized as absolute position transducer in many industrial motion-control applications where robustness and ability to operate in harsh environment is required. In real system, the quality of position and speed measurement is badly affected by the resolver errors and by the noise. In this paper, the software-based error-compensation technique is integrated into the control structure of the drive. The compensation scheme adapts online to the errors in the resolver signals in order to improve accuracy of the measured position and speed. Oversampling and averaging technique is used to reduce noise and improve resolution. The performance of the compensation scheme and the effect on the drive operation is verified by simulation.
{"title":"Self-calibration and noise reduction of resolver sensor in servo drive application","authors":"J. Faber","doi":"10.1109/ELEKTRO.2012.6225633","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225633","url":null,"abstract":"Resolver sensor is utilized as absolute position transducer in many industrial motion-control applications where robustness and ability to operate in harsh environment is required. In real system, the quality of position and speed measurement is badly affected by the resolver errors and by the noise. In this paper, the software-based error-compensation technique is integrated into the control structure of the drive. The compensation scheme adapts online to the errors in the resolver signals in order to improve accuracy of the measured position and speed. Oversampling and averaging technique is used to reduce noise and improve resolution. The performance of the compensation scheme and the effect on the drive operation is verified by simulation.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"128 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":"128105298","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 : 2012-05-21DOI: 10.1109/ELEKTRO.2012.6225629
M. Valčo, P. Cubon, P. Jeck
This paper investigates the influence of the different loads on the output voltage of the single phase voltage source inverter (VSI). It describes the influence of the different types of loads (linear and non-linear) in case of two regulation schemes (open loop and closed loop regulation). Simulation results are presented for description of that influence.
{"title":"Influence of different loads on the inverter output voltage","authors":"M. Valčo, P. Cubon, P. Jeck","doi":"10.1109/ELEKTRO.2012.6225629","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225629","url":null,"abstract":"This paper investigates the influence of the different loads on the output voltage of the single phase voltage source inverter (VSI). It describes the influence of the different types of loads (linear and non-linear) in case of two regulation schemes (open loop and closed loop regulation). Simulation results are presented for description of that influence.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"1 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":"131236965","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 : 2012-05-21DOI: 10.1109/ELEKTRO.2012.6225628
P. Spánik, P. Drgona, M. Frivaldský, J. Šedo, A. Simonová
This paper deals with device for online, real time analysis of recuperative current with the usage of microprocessor. This system is used in railway transport for measurement and analysis of recuperative-currents from converter in railway engine. Recuperative currents from converters in railway engines, flows through rail back to the distribution point. Content of higher harmonics in these currents must not exceed limits specified in international standard UIC 550-3, so exact measurement and analysis of this harmonics is necessary. Proposed device uses microprocessor for real time measurement and analysis of recuperative currents.
{"title":"Analysis of currents with utilization of digital measurement device","authors":"P. Spánik, P. Drgona, M. Frivaldský, J. Šedo, A. Simonová","doi":"10.1109/ELEKTRO.2012.6225628","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225628","url":null,"abstract":"This paper deals with device for online, real time analysis of recuperative current with the usage of microprocessor. This system is used in railway transport for measurement and analysis of recuperative-currents from converter in railway engine. Recuperative currents from converters in railway engines, flows through rail back to the distribution point. Content of higher harmonics in these currents must not exceed limits specified in international standard UIC 550-3, so exact measurement and analysis of this harmonics is necessary. Proposed device uses microprocessor for real time measurement and analysis of recuperative currents.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"38 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":"124149265","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 : 2012-05-21DOI: 10.1109/ELEKTRO.2012.6225570
Svetoslav Dimkow, V. Ivanova
This work suggests a strategy for quality evaluation of the customers' service in the telecommunications sector. The strategy comprises a model and methods for evaluation. Two main determinants of the quality of service are measured: service ethics and handling of complaints. The evaluation is performed by two complex indicators: for service ethics; for involvement in the process of handling complaints. The two complex indicators are formed on the basis of hierarchic structure of weighted primary measures. The selection of primary indicators is made in accordance with the logic of ISO 10001 and ISO 10002 standards. The paper is a result of scientific project, researching the activity of leading telecommunication operators in Bulgaria.
{"title":"Assessing telecommunications services based on standards ISO 10001 and ISO 10002","authors":"Svetoslav Dimkow, V. Ivanova","doi":"10.1109/ELEKTRO.2012.6225570","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225570","url":null,"abstract":"This work suggests a strategy for quality evaluation of the customers' service in the telecommunications sector. The strategy comprises a model and methods for evaluation. Two main determinants of the quality of service are measured: service ethics and handling of complaints. The evaluation is performed by two complex indicators: for service ethics; for involvement in the process of handling complaints. The two complex indicators are formed on the basis of hierarchic structure of weighted primary measures. The selection of primary indicators is made in accordance with the logic of ISO 10001 and ISO 10002 standards. The paper is a result of scientific project, researching the activity of leading telecommunication operators in Bulgaria.","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":"126553174","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 : 2012-05-21DOI: 10.1109/ELEKTRO.2012.6225581
M. Uhrina, J. Hlubik, M. Vaculík
The article deals with the correlation between the objective and the subjective methods. In the first part the short characteristic of the MPEG compression standards is written. The second part focuses on the objective metrics and the third part on the subjective methods, which were used for testing. In the fourth part the measurements and the experimental results using the objective metrics and in the fifth part the measurements and the experimental results using the subjective methods are described. The last part deals with the correlation between the objective and the subjective methods.
{"title":"Correlation between objective and subjective methods used for video quality evaluation","authors":"M. Uhrina, J. Hlubik, M. Vaculík","doi":"10.1109/ELEKTRO.2012.6225581","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225581","url":null,"abstract":"The article deals with the correlation between the objective and the subjective methods. In the first part the short characteristic of the MPEG compression standards is written. The second part focuses on the objective metrics and the third part on the subjective methods, which were used for testing. In the fourth part the measurements and the experimental results using the objective metrics and in the fifth part the measurements and the experimental results using the subjective methods are described. The last part deals with the correlation between the objective and the subjective methods.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"06 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":"127337221","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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