Pub Date : 2018-11-01DOI: 10.1109/RTUCON.2018.8659878
Triin Kangro, J. Kilter, Jeewantha De Silva, Kaur Tuttelberg
This paper presents the results of a study verifying the differences between various HV XLPE cable sheath modelling approaches used in EMT programs. Cable sheath is a compound layer, including two different conductive layers with a semi-conductive layer in between, but in EMT programs, it is modelled as a single solid conductive layer. In order to consider properties of the actual sheath layer, modifications in its representation are needed. For this purpose, several approaches are used but currently there is not sufficient information available to clarify what is the difference between them and how they affect simulation results. In this paper, frequency dependent sheath impedance characteristics are studied for single layer, equivalent single layer and double layer sheath approaches and simulation results are presented. It is shown that differences between various sheath modelling approaches exist and it is necessary to consider these in various system studies.
{"title":"Assessment of HV XLPE Cable Sheath Layer Modelling Approaches for EMT Studies","authors":"Triin Kangro, J. Kilter, Jeewantha De Silva, Kaur Tuttelberg","doi":"10.1109/RTUCON.2018.8659878","DOIUrl":"https://doi.org/10.1109/RTUCON.2018.8659878","url":null,"abstract":"This paper presents the results of a study verifying the differences between various HV XLPE cable sheath modelling approaches used in EMT programs. Cable sheath is a compound layer, including two different conductive layers with a semi-conductive layer in between, but in EMT programs, it is modelled as a single solid conductive layer. In order to consider properties of the actual sheath layer, modifications in its representation are needed. For this purpose, several approaches are used but currently there is not sufficient information available to clarify what is the difference between them and how they affect simulation results. In this paper, frequency dependent sheath impedance characteristics are studied for single layer, equivalent single layer and double layer sheath approaches and simulation results are presented. It is shown that differences between various sheath modelling approaches exist and it is necessary to consider these in various system studies.","PeriodicalId":192943,"journal":{"name":"2018 IEEE 59th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134123201","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 : 2018-11-01DOI: 10.1109/RTUCON.2018.8659835
Alexander Moses, Alberto Landeros, M. F. Abdel-Fattah
This paper presents an optimal sizing method for a hybrid wind, solar, battery storage and diesel generation units designed to meet a specific demand. The energy output and load demand used in the model is structured in one hour intervals over the course of a year. In addition, demand response is implemented showing a direct relationship with total system price. Based on generating unit capital and variable costs, the particle swarm optimization (PSO) algorithm is implemented. The yearly normalized total system cost is taken as the objective function which is based on the generating technologies life cycle. PSO exhibits an optimum generating unit sizing assuming 5 percent of the average load as demand response power capacity.
{"title":"Particle Swarm Optimization for Sizing Hybrid Power Systems Incorporating Demand Response","authors":"Alexander Moses, Alberto Landeros, M. F. Abdel-Fattah","doi":"10.1109/RTUCON.2018.8659835","DOIUrl":"https://doi.org/10.1109/RTUCON.2018.8659835","url":null,"abstract":"This paper presents an optimal sizing method for a hybrid wind, solar, battery storage and diesel generation units designed to meet a specific demand. The energy output and load demand used in the model is structured in one hour intervals over the course of a year. In addition, demand response is implemented showing a direct relationship with total system price. Based on generating unit capital and variable costs, the particle swarm optimization (PSO) algorithm is implemented. The yearly normalized total system cost is taken as the objective function which is based on the generating technologies life cycle. PSO exhibits an optimum generating unit sizing assuming 5 percent of the average load as demand response power capacity.","PeriodicalId":192943,"journal":{"name":"2018 IEEE 59th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134359329","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 : 2018-11-01DOI: 10.1109/RTUCON.2018.8659906
A. Krasovsky, S. Vasyukov, O. Miseyuk
analytical review and classification of electrical measuring instruments, laboratory measuring complexes and computer simulation tools for use in educational electrical laboratories of Bauman Moscow State Technical University were carried out. The advantages and disadvantages of measuring equipment were considered, recommendations for use were given. The basic principles of the formation of the nomenclature of laboratory measuring equipment were developed, the application of which allows to conduct a full-scale and high-quality laboratory works on electrical engineering disciplines for specialties of a technical profile.
{"title":"The System Approach for the Application of Measuring Instruments and Computer Modeling Tools for the Electrical Laboratory for the Bauman Moscow State Technical Univercity","authors":"A. Krasovsky, S. Vasyukov, O. Miseyuk","doi":"10.1109/RTUCON.2018.8659906","DOIUrl":"https://doi.org/10.1109/RTUCON.2018.8659906","url":null,"abstract":"analytical review and classification of electrical measuring instruments, laboratory measuring complexes and computer simulation tools for use in educational electrical laboratories of Bauman Moscow State Technical University were carried out. The advantages and disadvantages of measuring equipment were considered, recommendations for use were given. The basic principles of the formation of the nomenclature of laboratory measuring equipment were developed, the application of which allows to conduct a full-scale and high-quality laboratory works on electrical engineering disciplines for specialties of a technical profile.","PeriodicalId":192943,"journal":{"name":"2018 IEEE 59th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132322099","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 : 2018-11-01DOI: 10.1109/RTUCON.2018.8659882
A. Korneyev, M. Gorobetz, A. Levchenkov
In this paper the developed optimization algorithm for electrical unmanned aerial vehicle (UAV) is described for minimization of energy consumption. The main advantage of the proposed algorithm is the unification and usability for any electrical UAV with different number of traction drives, different or variable mass and other configuration differences without any initial manual setup. With the proposed algorithm any electric UAV is able to move with maximal energy efficiency.
{"title":"Unified Energy Efficient Control Algorithm for Electric Unmanned Aerial Vehicles with Different Traction Drives and Configurations","authors":"A. Korneyev, M. Gorobetz, A. Levchenkov","doi":"10.1109/RTUCON.2018.8659882","DOIUrl":"https://doi.org/10.1109/RTUCON.2018.8659882","url":null,"abstract":"In this paper the developed optimization algorithm for electrical unmanned aerial vehicle (UAV) is described for minimization of energy consumption. The main advantage of the proposed algorithm is the unification and usability for any electrical UAV with different number of traction drives, different or variable mass and other configuration differences without any initial manual setup. With the proposed algorithm any electric UAV is able to move with maximal energy efficiency.","PeriodicalId":192943,"journal":{"name":"2018 IEEE 59th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116267770","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 : 2018-11-01DOI: 10.1109/RTUCON.2018.8659807
I. Rankis, Mārcis Priedītis, Ģ. Staņa
In this paper is investigated functionality of bidirectional direct AC/AC converter, which is meant to stabilize voltage on the load by the help of series injection transformer. Paper includes detailed working principle description, as well parameter dependency on each other is described by analytical formulas. In the end comparison with simulation results is done. In paper are shown size calculation results of series injection transformer depending on load voltage.
{"title":"Investigation of dirrect AC-AC BUCK converter with series injection transformer","authors":"I. Rankis, Mārcis Priedītis, Ģ. Staņa","doi":"10.1109/RTUCON.2018.8659807","DOIUrl":"https://doi.org/10.1109/RTUCON.2018.8659807","url":null,"abstract":"In this paper is investigated functionality of bidirectional direct AC/AC converter, which is meant to stabilize voltage on the load by the help of series injection transformer. Paper includes detailed working principle description, as well parameter dependency on each other is described by analytical formulas. In the end comparison with simulation results is done. In paper are shown size calculation results of series injection transformer depending on load voltage.","PeriodicalId":192943,"journal":{"name":"2018 IEEE 59th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132805646","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 : 2018-11-01DOI: 10.1109/RTUCON.2018.8659865
Saltanovs Rodions, A. Krainyukov
The paper describes using SiC MOSFETs and GaN transistors for micro arc oxidation (MAO) process. To carry research SiC transistors C3M0065090J and eGaN EPC2034 transistors have been chosen, as these transistors have small size and good frequency properties. Modules of current regulators were created by means of selected transistors using a welding device of one-sided contact micro welding. The experimental installation was set up to investigate modules under various operating conditions and cooling methods. The research results of frequency properties of current regulators are presented using direct liquid cooling by silicone oil. It was established that the efficiency of the current regulators exceeded 0.9, even when switching frequency equals 300 kHz, when eGaN transistors EPC2034 were used in modules.
{"title":"Employment of SiC MOSFETs and GaN – transistors for Micro Arc Oxidation","authors":"Saltanovs Rodions, A. Krainyukov","doi":"10.1109/RTUCON.2018.8659865","DOIUrl":"https://doi.org/10.1109/RTUCON.2018.8659865","url":null,"abstract":"The paper describes using SiC MOSFETs and GaN transistors for micro arc oxidation (MAO) process. To carry research SiC transistors C3M0065090J and eGaN EPC2034 transistors have been chosen, as these transistors have small size and good frequency properties. Modules of current regulators were created by means of selected transistors using a welding device of one-sided contact micro welding. The experimental installation was set up to investigate modules under various operating conditions and cooling methods. The research results of frequency properties of current regulators are presented using direct liquid cooling by silicone oil. It was established that the efficiency of the current regulators exceeded 0.9, even when switching frequency equals 300 kHz, when eGaN transistors EPC2034 were used in modules.","PeriodicalId":192943,"journal":{"name":"2018 IEEE 59th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130312231","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 : 2018-11-01DOI: 10.1109/RTUCON.2018.8659810
M. Bragard, H. van Hoek, Anne von Hoegen, R. D. De Doncker
During the first semesters, the study of electrical engineering at the university is mainly theoretical. Due to the highly abstract nature of these courses, students often miss the link to practical applications. This paper presents a hands-on project that covers various technical aspects such as Faraday’s Law, operational amplifiers, a digital microcontroller, and software-based algorithms. Understanding the interactions and connections between these technical aspects gives the students an important insight on the relevance of their courses. In addition, the feedback shows that the students experince the project as highly motivative.The spinning top creates the illusion of a glowing text with a line of 8 rotating LEDs. These are soldered on a circular printed circuit board (PCB) including a microcontroller, operational amplifiers, batteries and a small induction coil. It uses the magnetic field of the earth to determine its rotational position. Appropriate controller software allows to display text messages, a compass or the counting of its own turns.
{"title":"Motivation-based Learning: Teaching Fundamentals of Electrical Engineering with an LED Spinning Top","authors":"M. Bragard, H. van Hoek, Anne von Hoegen, R. D. De Doncker","doi":"10.1109/RTUCON.2018.8659810","DOIUrl":"https://doi.org/10.1109/RTUCON.2018.8659810","url":null,"abstract":"During the first semesters, the study of electrical engineering at the university is mainly theoretical. Due to the highly abstract nature of these courses, students often miss the link to practical applications. This paper presents a hands-on project that covers various technical aspects such as Faraday’s Law, operational amplifiers, a digital microcontroller, and software-based algorithms. Understanding the interactions and connections between these technical aspects gives the students an important insight on the relevance of their courses. In addition, the feedback shows that the students experince the project as highly motivative.The spinning top creates the illusion of a glowing text with a line of 8 rotating LEDs. These are soldered on a circular printed circuit board (PCB) including a microcontroller, operational amplifiers, batteries and a small induction coil. It uses the magnetic field of the earth to determine its rotational position. Appropriate controller software allows to display text messages, a compass or the counting of its own turns.","PeriodicalId":192943,"journal":{"name":"2018 IEEE 59th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126245835","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 : 2018-11-01DOI: 10.1109/RTUCON.2018.8659908
K. Vītols, Eizens Poiss
The rise of electric transportation includes not only four-wheeled vehicles but two-wheeled personal mobility devices as well. One of such is the electric scooter which can be used for personal as well as commercial use as in this case. The present status of a scooter design and development is described – the need for an in-house designed battery management system is given. A set of commercial monitoring integrated circuits are used in conjunction with central controller and measurement circuitry to perform cell monitoring, balancing, current measurement, charge control and emergency shutdown. Experimental validation of proposed system is given.
{"title":"Development of Electric Scooter Battery Pack Management System","authors":"K. Vītols, Eizens Poiss","doi":"10.1109/RTUCON.2018.8659908","DOIUrl":"https://doi.org/10.1109/RTUCON.2018.8659908","url":null,"abstract":"The rise of electric transportation includes not only four-wheeled vehicles but two-wheeled personal mobility devices as well. One of such is the electric scooter which can be used for personal as well as commercial use as in this case. The present status of a scooter design and development is described – the need for an in-house designed battery management system is given. A set of commercial monitoring integrated circuits are used in conjunction with central controller and measurement circuitry to perform cell monitoring, balancing, current measurement, charge control and emergency shutdown. Experimental validation of proposed system is given.","PeriodicalId":192943,"journal":{"name":"2018 IEEE 59th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128075093","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 : 2018-11-01DOI: 10.1109/RTUCON.2018.8659828
A. Kallaste, T. Vaimann, Anton Rassãlkin
Electrical machine design is pushed forward by the need of increased energy efficiency, progress of system integration and devices mobility, which has led to the investigation of alternative production methods for electrical machines. Additive manufacturing, also known as 3D printing, is opening up new ground for innovations in low-volume production due to faster and cheaper prototyping, reduced lead time and shorter supply chains. It is a relatively new technology, which enables the tool-free production of components and entire assemblies directly from a CAD file. Today, the technology is still not widely used in industrial production, but it is gaining more and more popularity. This paper investigates the possibilities of additive design of electrical machines, as there is a need for principles how to design electrical machine so that it would be suitable for 3D printing.
{"title":"Additive Design Possibilities of Electrical Machines","authors":"A. Kallaste, T. Vaimann, Anton Rassãlkin","doi":"10.1109/RTUCON.2018.8659828","DOIUrl":"https://doi.org/10.1109/RTUCON.2018.8659828","url":null,"abstract":"Electrical machine design is pushed forward by the need of increased energy efficiency, progress of system integration and devices mobility, which has led to the investigation of alternative production methods for electrical machines. Additive manufacturing, also known as 3D printing, is opening up new ground for innovations in low-volume production due to faster and cheaper prototyping, reduced lead time and shorter supply chains. It is a relatively new technology, which enables the tool-free production of components and entire assemblies directly from a CAD file. Today, the technology is still not widely used in industrial production, but it is gaining more and more popularity. This paper investigates the possibilities of additive design of electrical machines, as there is a need for principles how to design electrical machine so that it would be suitable for 3D printing.","PeriodicalId":192943,"journal":{"name":"2018 IEEE 59th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123224572","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 : 2018-11-01DOI: 10.1109/RTUCON.2018.8659844
M. Elkayam, A. Kuperman, M. Sitbon
A new design method of multiresonant controller based on desired loop gain performance is proposed herein. Resonant controllers are one of the highest performance alternatives for AC system control. All of the methodologies to design multiresonant controller are based on parallel connection to the nominal controller, which involves complex calculations in attempt to design control system aided by Bode diagram. The proposed control scheme is based on series harmonic compensators, aiming the tracking of sinusoidal reference signals with zero steady-state error and the rejection of harmonic components of the output voltage. It is easy to implement and can be extended to be applied to various dynamic models. Then, the proposed control strategy is applied to an industrial DC-AC power inverter to demonstrate the potentials of multiply resonant controllers for sinusoidal tracking and harmonic rejection under both linear and nonlinear loading conditions. Performances of proposed methodology have been verified through simulation and real time experimental results.
{"title":"Loop Gain Oriented Design of Multiresonant Current Controllers","authors":"M. Elkayam, A. Kuperman, M. Sitbon","doi":"10.1109/RTUCON.2018.8659844","DOIUrl":"https://doi.org/10.1109/RTUCON.2018.8659844","url":null,"abstract":"A new design method of multiresonant controller based on desired loop gain performance is proposed herein. Resonant controllers are one of the highest performance alternatives for AC system control. All of the methodologies to design multiresonant controller are based on parallel connection to the nominal controller, which involves complex calculations in attempt to design control system aided by Bode diagram. The proposed control scheme is based on series harmonic compensators, aiming the tracking of sinusoidal reference signals with zero steady-state error and the rejection of harmonic components of the output voltage. It is easy to implement and can be extended to be applied to various dynamic models. Then, the proposed control strategy is applied to an industrial DC-AC power inverter to demonstrate the potentials of multiply resonant controllers for sinusoidal tracking and harmonic rejection under both linear and nonlinear loading conditions. Performances of proposed methodology have been verified through simulation and real time experimental results.","PeriodicalId":192943,"journal":{"name":"2018 IEEE 59th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115282522","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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