Pub Date : 2020-05-01DOI: 10.1109/ELEKTRO49696.2020.9130337
G. Nobile, E. Vasta, M. Cacciato, G. Scarcella, G. Scelba, Agnese Giuseppa Federica Di Stefano, G. Leotta, P. Pugliatti, F. Bizzarri
The integration of energy storage systems (ESSs) and specially of battery ESSs (BESSs) with renewable energy sources represents an efficient solution due to their ability to provide energy time shifting, peak shaving and so on. Considering the above, deepening all aspects related to the precise estimation of the state of charge (SOC) of a battery becomes extremely important. In this work, a real-time estimation algorithm including a PI-based observer and an equivalent circuit model (ECM), is improved exploiting the SOC dependence on the open circuit voltage (OCV). Particularly, it is described how the SOC can be reliably deduced from relaxation voltage in a short time thanks to a prediction function. The integration of such function into the PI-based observer allows to get a good trade-off between accuracy and complexity.
{"title":"Integration of a relaxation voltage prediction function into a PI-based observer to improve the SOC estimation of battery packs in renewable energy applications","authors":"G. Nobile, E. Vasta, M. Cacciato, G. Scarcella, G. Scelba, Agnese Giuseppa Federica Di Stefano, G. Leotta, P. Pugliatti, F. Bizzarri","doi":"10.1109/ELEKTRO49696.2020.9130337","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130337","url":null,"abstract":"The integration of energy storage systems (ESSs) and specially of battery ESSs (BESSs) with renewable energy sources represents an efficient solution due to their ability to provide energy time shifting, peak shaving and so on. Considering the above, deepening all aspects related to the precise estimation of the state of charge (SOC) of a battery becomes extremely important. In this work, a real-time estimation algorithm including a PI-based observer and an equivalent circuit model (ECM), is improved exploiting the SOC dependence on the open circuit voltage (OCV). Particularly, it is described how the SOC can be reliably deduced from relaxation voltage in a short time thanks to a prediction function. The integration of such function into the PI-based observer allows to get a good trade-off between accuracy and complexity.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130204885","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 : 2020-05-01DOI: 10.1109/ELEKTRO49696.2020.9130212
V. Kotlan, R. Hamar, I. Doležel
A mathematical model of induction-assisted 3D printing is presented, providing a tool for design of specified tracks printed on suitable substrates. The model consists of the non-stationary temperature field produced by laser beam and field of deformation produced by continuous adding the printing material. If necessary, the pattern of temperature in the material can be customized by induction preheating and/or postheating of the substrate. The model is solved for a given arrangement and the most important results are compared with the experiment.
{"title":"Modeling of induction-assisted 3D laser printing","authors":"V. Kotlan, R. Hamar, I. Doležel","doi":"10.1109/ELEKTRO49696.2020.9130212","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130212","url":null,"abstract":"A mathematical model of induction-assisted 3D printing is presented, providing a tool for design of specified tracks printed on suitable substrates. The model consists of the non-stationary temperature field produced by laser beam and field of deformation produced by continuous adding the printing material. If necessary, the pattern of temperature in the material can be customized by induction preheating and/or postheating of the substrate. The model is solved for a given arrangement and the most important results are compared with the experiment.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"32 29","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113955070","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 : 2020-05-01DOI: 10.1109/ELEKTRO49696.2020.9130299
S. Karabanov, E. I. Kistrina, D. Suvorov, P. Bezrukikh, Irina M. Kuvakova, Dmitry A. Perepelkin
The paper substantiates the composition and choice of a microgrid for settlements in the Central European part of Russia that are not connected to centralized public electricity networks. An economic analysis of microgrid costs in comparison with traditional methods of power supply (diesel, power lines) has been carried out. The economic advantages of using microgrid are shown both from the point of view of customers and the state in providing the availability of electricity for the population.
{"title":"Socio-Economic Aspects of Microgrid Application in Russia","authors":"S. Karabanov, E. I. Kistrina, D. Suvorov, P. Bezrukikh, Irina M. Kuvakova, Dmitry A. Perepelkin","doi":"10.1109/ELEKTRO49696.2020.9130299","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130299","url":null,"abstract":"The paper substantiates the composition and choice of a microgrid for settlements in the Central European part of Russia that are not connected to centralized public electricity networks. An economic analysis of microgrid costs in comparison with traditional methods of power supply (diesel, power lines) has been carried out. The economic advantages of using microgrid are shown both from the point of view of customers and the state in providing the availability of electricity for the population.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"157 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121238762","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 : 2020-05-01DOI: 10.1109/ELEKTRO49696.2020.9130190
Z. Psenakova, Jana Mydlova, M. Beňová
The effects of electromagnetic (EM) fields on human head model with cochlear implant in different shielded spaces are presented in this article. There are differences between specific absorption rate (SAR) close to human head model inside shielded space like in elevator or train and nonshielded space (open area). In the presented approach, the investigation is focused on modelling of EM field were realized using the finite integration method. The simulations were carried out for specific scenario where a person/passenger was placed in the different shielded spaces using a mobile phone. The results were evaluated in terms of the SAR values – the determination of EM energy absorption inside the human head. The PIFA antenna with a frequency of 900 MHz and 1800 MHz was designed as radio frequency source. In the proposed matching method, SAM homogenous human head model with hand and in hand PIFA antenna as a source of EM field- was chosen to model six different distances of the mobile phone from the human head surface. Our results have shown that the maximal SAR values obtained by numerical simulations in shielded/enclosure areas (such as the elevator or train) are higher than are SAR maximum values recommended in the European standards limit. Besides, those values achieved in shielded/enclosure areas are higher than the open space simulations results.
{"title":"Evaluation of Specific absorption rate in model of human head with Cochlear implant in different shielded spaces","authors":"Z. Psenakova, Jana Mydlova, M. Beňová","doi":"10.1109/ELEKTRO49696.2020.9130190","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130190","url":null,"abstract":"The effects of electromagnetic (EM) fields on human head model with cochlear implant in different shielded spaces are presented in this article. There are differences between specific absorption rate (SAR) close to human head model inside shielded space like in elevator or train and nonshielded space (open area). In the presented approach, the investigation is focused on modelling of EM field were realized using the finite integration method. The simulations were carried out for specific scenario where a person/passenger was placed in the different shielded spaces using a mobile phone. The results were evaluated in terms of the SAR values – the determination of EM energy absorption inside the human head. The PIFA antenna with a frequency of 900 MHz and 1800 MHz was designed as radio frequency source. In the proposed matching method, SAM homogenous human head model with hand and in hand PIFA antenna as a source of EM field- was chosen to model six different distances of the mobile phone from the human head surface. Our results have shown that the maximal SAR values obtained by numerical simulations in shielded/enclosure areas (such as the elevator or train) are higher than are SAR maximum values recommended in the European standards limit. Besides, those values achieved in shielded/enclosure areas are higher than the open space simulations results.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121360141","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 : 2020-05-01DOI: 10.1109/ELEKTRO49696.2020.9130233
Roman Michalík, A. Janota
Collaborative robots who are able to share workspace with humans, have opened a new dimension of automation across multiple industries. The paper deals with the problem of selecting appropriate software for simulating robot control, creating a model for these simulations and implementing them. The authors briefly analyze and discuss the problem, its potential solutions and present applied approach in the form of the Python program by using the PyBullet module.
{"title":"The PyBullet module-based approach to control the collaborative YuMi robot","authors":"Roman Michalík, A. Janota","doi":"10.1109/ELEKTRO49696.2020.9130233","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130233","url":null,"abstract":"Collaborative robots who are able to share workspace with humans, have opened a new dimension of automation across multiple industries. The paper deals with the problem of selecting appropriate software for simulating robot control, creating a model for these simulations and implementing them. The authors briefly analyze and discuss the problem, its potential solutions and present applied approach in the form of the Python program by using the PyBullet module.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128941130","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 : 2020-05-01DOI: 10.1109/ELEKTRO49696.2020.9130258
M. Šebok, M. Kubiš, M. Gutten, M. Kučera, T. Kołtunowicz, V. Bondariev
This article describes evaluation principles of various parts of the system of ignition through respectable measuring systems based on the evaluation of voltage and current waveforms. Practical tests, measurements, diagnostics and following analyze have shown that thermal imaging plays an important role in the diagnosis of online car controls. If will be compared the non-standard heating of a part of the electric system with the combination with the high-voltage time measuring method, that is possible to analyze the failure and also monitoring the system operating mode. An example of an ignition coil temperature distribution thermogram and analysis of high voltage ignition curves with error spark plugs is given in the section on non-destructive diagnosis with temperature differences. By analyzing the failure state of ignition systems, using the method of diagnostics of high-voltage pulse behaviors and also the method of thermal imaging diagnosis, it is possible accordingly to review the functional of the electric system and its various components. In some cases, it not possible use the classical method with ignition single-coil system, and it is recommended continues the analysis of temperature fields.
{"title":"Diagnostics of automotive ignition system in operating conditions","authors":"M. Šebok, M. Kubiš, M. Gutten, M. Kučera, T. Kołtunowicz, V. Bondariev","doi":"10.1109/ELEKTRO49696.2020.9130258","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130258","url":null,"abstract":"This article describes evaluation principles of various parts of the system of ignition through respectable measuring systems based on the evaluation of voltage and current waveforms. Practical tests, measurements, diagnostics and following analyze have shown that thermal imaging plays an important role in the diagnosis of online car controls. If will be compared the non-standard heating of a part of the electric system with the combination with the high-voltage time measuring method, that is possible to analyze the failure and also monitoring the system operating mode. An example of an ignition coil temperature distribution thermogram and analysis of high voltage ignition curves with error spark plugs is given in the section on non-destructive diagnosis with temperature differences. By analyzing the failure state of ignition systems, using the method of diagnostics of high-voltage pulse behaviors and also the method of thermal imaging diagnosis, it is possible accordingly to review the functional of the electric system and its various components. In some cases, it not possible use the classical method with ignition single-coil system, and it is recommended continues the analysis of temperature fields.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115811195","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 : 2020-05-01DOI: 10.1109/ELEKTRO49696.2020.9130305
M. Pospisilik, M. Navrátil, M. Adamek
This paper describes a voltage controlled amplifier with linearized response to the controlling voltage and discusses its harmonic distortion. As a controlling element, a JFET transistor has been utilized. The design of the amplifier has been made with the aid of Maple mathematical software and National Instruments Multisim circuit simulator. During the simulations, it was found that the controlling transistor would probably introduce significant distortion into the signal path. Therefore a set of measurements on real circuit was made in order to verify that the SPICE model of the transistor provided relevant results during the simulation. Both, the simulated and the really measured parameters of the amplifier are discussed within the framework of this paper.
{"title":"Distortion caused by controlling transistor implemented in the voltage controlled amplifier","authors":"M. Pospisilik, M. Navrátil, M. Adamek","doi":"10.1109/ELEKTRO49696.2020.9130305","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130305","url":null,"abstract":"This paper describes a voltage controlled amplifier with linearized response to the controlling voltage and discusses its harmonic distortion. As a controlling element, a JFET transistor has been utilized. The design of the amplifier has been made with the aid of Maple mathematical software and National Instruments Multisim circuit simulator. During the simulations, it was found that the controlling transistor would probably introduce significant distortion into the signal path. Therefore a set of measurements on real circuit was made in order to verify that the SPICE model of the transistor provided relevant results during the simulation. Both, the simulated and the really measured parameters of the amplifier are discussed within the framework of this paper.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116221441","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 : 2020-05-01DOI: 10.1109/ELEKTRO49696.2020.9130264
M. Šmondrk, S. Borik, Tadeás Bednár, B. Babušiak
The proposed article introduces a design of low-cost and low-energy home health-care monitoring system. The developed prototype is capable of measuring the three primary diagnostic modalities: electrocardiogram, photoplethysmogram, and body temperature. During the bio-signals acquisition, the data are visualized on the screen in the real-time and simultaneously transmitted to the computer for the subsequent processing.
{"title":"Design and Implementation of Low-Cost and Low-Energy Home Health-Care Monitoring System","authors":"M. Šmondrk, S. Borik, Tadeás Bednár, B. Babušiak","doi":"10.1109/ELEKTRO49696.2020.9130264","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130264","url":null,"abstract":"The proposed article introduces a design of low-cost and low-energy home health-care monitoring system. The developed prototype is capable of measuring the three primary diagnostic modalities: electrocardiogram, photoplethysmogram, and body temperature. During the bio-signals acquisition, the data are visualized on the screen in the real-time and simultaneously transmitted to the computer for the subsequent processing.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127110126","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 : 2020-05-01DOI: 10.1109/ELEKTRO49696.2020.9130188
M. Sumega, P. Rafajdus, Š. Kočan, M. Stulrajter
This paper presents novel modification of Field Oriented Control (FOC) in order to reduce torque ripple in 3-phase Permanent Magnet (PM) motors caused by non-sinusoidal BackEMF. A smooth torque operation is ensured by precise tracking of a modified q-axis current reference, which includes BackEMF shape. Alternating component added into q-axis current reference has 6 times higher frequency than fundamental stator electrical frequency. Therefore precise tracking of such current reference is usually not feasible with conventional PI controller due to its limited bandwidth. This paper introduces Current Harmonics Controller (CHC) added into current control loop in FOC structure in order to increase performance of the current loop if alternating current reference or alternating disturbances occurs as a 6th harmonic over one electrical revolution.
{"title":"Torque Ripple Reduction in PM Motors using Current Harmonics Controller","authors":"M. Sumega, P. Rafajdus, Š. Kočan, M. Stulrajter","doi":"10.1109/ELEKTRO49696.2020.9130188","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130188","url":null,"abstract":"This paper presents novel modification of Field Oriented Control (FOC) in order to reduce torque ripple in 3-phase Permanent Magnet (PM) motors caused by non-sinusoidal BackEMF. A smooth torque operation is ensured by precise tracking of a modified q-axis current reference, which includes BackEMF shape. Alternating component added into q-axis current reference has 6 times higher frequency than fundamental stator electrical frequency. Therefore precise tracking of such current reference is usually not feasible with conventional PI controller due to its limited bandwidth. This paper introduces Current Harmonics Controller (CHC) added into current control loop in FOC structure in order to increase performance of the current loop if alternating current reference or alternating disturbances occurs as a 6th harmonic over one electrical revolution.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124370815","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 : 2020-05-01DOI: 10.1109/ELEKTRO49696.2020.9130246
D. Macha, P. Sowa
In the paper, reduction of the impact of electromagnetic field interference on a measuring system of a light electric vehicle designed by students of the Silesian University of Technology is discussed. The analysis of electromagnetic field interference showed the possibility of significant minimization of this interference.
{"title":"Reduction of the influence of electromagnetic field interference on a torque sensor of a light electric vehicle","authors":"D. Macha, P. Sowa","doi":"10.1109/ELEKTRO49696.2020.9130246","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130246","url":null,"abstract":"In the paper, reduction of the impact of electromagnetic field interference on a measuring system of a light electric vehicle designed by students of the Silesian University of Technology is discussed. The analysis of electromagnetic field interference showed the possibility of significant minimization of this interference.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122052908","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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