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2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)最新文献

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Concepts and Practical Application for Distributed Compensation of Earth Fault Current in Latvia's 20 kV Networks 拉脱维亚20kv电网接地故障电流分布式补偿的概念及实际应用
2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI: 10.1109/RTUCON48111.2019.8982302
V. Šults, G. Kalcevs
{"title":"Concepts and Practical Application for Distributed Compensation of Earth Fault Current in Latvia's 20 kV Networks","authors":"V. Šults, G. Kalcevs","doi":"10.1109/RTUCON48111.2019.8982302","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982302","url":null,"abstract":"Over the last years industry and home sector has grown in Latvia. Industry and home sector developed mostly around Riga - capital of Latvia. This caused an expansion of the 20 kV networks therefore appear necessity to build new 20kV networks. The new 20kV network in densely populated areas is built as cable network. Besides since 2011 existing overhead lines which are located in densely populated areas is going to change to cable lines. Increasing of cable lengths brings increment of earth fault capacitive current. Main aim of this article is show distributed compensation application in Latvia's 20kV networks.","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130955102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Research and Development of Inductive-Resonant Wireless Power Transfer System 感应谐振无线电力传输系统的研究与开发
2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI: 10.1109/RTUCON48111.2019.8982343
D. Stepins, J. Zakis, R. Kaspars, O. Husev, V. Shevchenko, B. Pakhaliuk
{"title":"Research and Development of Inductive-Resonant Wireless Power Transfer System","authors":"D. Stepins, J. Zakis, R. Kaspars, O. Husev, V. Shevchenko, B. Pakhaliuk","doi":"10.1109/RTUCON48111.2019.8982343","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982343","url":null,"abstract":"In this paper short-range low-power inductive-resonant wireless power transfer system based on modified E class inverter is developed and studied in details. Simulation model of the inductive wireless power transfer system is created, simulation of the model is then performed in PSIM and the simulation results are then analyzed. Additionally, experimental prototype of inductive wireless power transfer system is designed, practically built and experimented. Analysis of the experimental results is also presented.","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115381507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Application of Foil Based Directly Coupled Inductor for Interleaved DC-DC Converter with GaN Transitors 基于箔的直接耦合电感在GaN晶体管交错DC-DC变换器中的应用
2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI: 10.1109/RTUCON48111.2019.8982353
K. Kroičs
{"title":"Application of Foil Based Directly Coupled Inductor for Interleaved DC-DC Converter with GaN Transitors","authors":"K. Kroičs","doi":"10.1109/RTUCON48111.2019.8982353","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982353","url":null,"abstract":"The paper describes design and application of foil based directly coupled inductor for two phase DC-DC converter with GaN transistors. The main advantages of the interleaved multiphase DC-DC converters over single-phase converters are reduced current stress and reduced output current ripple. Low on state resistances and low switching losses of GaN transistors allows increase current without significant increase in losses but anyway for higher switching frequencies some soft switching techniques and specific magnetics components are needed. The integrated magnetic structure can be used to achieve higher power density. The paper shows that foil based directly coupled inductor can be an option when designing such converter. PSIM software and FEMM simulation software based results are given and experimental tests are provided. It is concluded that directly coupled inductor is worth considered when designing interleaved high frequency converter, further research is needed to introduce best soft switching method for transistors and further optimize magnetics.","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115435248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Scenario Analysis for Increasing Efficiency Level of the Autonomous Generation Object in Central Heat Supply 提高集中供热自主发电对象效率水平的情景分析
2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI: 10.1109/RTUCON48111.2019.8982299
A. Mahņitko, Y. Veremiichuk, V. Deshko, D. Karpenko
{"title":"Scenario Analysis for Increasing Efficiency Level of the Autonomous Generation Object in Central Heat Supply","authors":"A. Mahņitko, Y. Veremiichuk, V. Deshko, D. Karpenko","doi":"10.1109/RTUCON48111.2019.8982299","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982299","url":null,"abstract":"The article analyzes the performance indicators of the research object in the operation of autonomous heat supply over the past 3 years. The function of full costs for the existing configuration of the heat supply system is defined and the cost of the produced thermal energy for the year is calculated. The calculation of the efficiency of the autonomous object of heat generation with the addition of a renewable energy source has been calculated. The simulation of the work of the modernized research object under competitive conditions in the territorial boundaries of district heating is executed.","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122441542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Energy Intensive Manufacturers in State Economy: Case study of Latvia 国有经济中的能源密集型制造业:拉脱维亚的案例研究
2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI: 10.1109/RTUCON48111.2019.8982318
Līga Rozentāle, D. Blumberga
{"title":"Energy Intensive Manufacturers in State Economy: Case study of Latvia","authors":"Līga Rozentāle, D. Blumberga","doi":"10.1109/RTUCON48111.2019.8982318","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982318","url":null,"abstract":"The research focuses on evaluating the impact of large manufacturing enterprises both on country's economy and on environment from the perspective of energy intensity. The case study is based on the situation in Latvia. The research uses the Kaya identity to show the situation that is necessary to obtain in order to achieve the carbon emissions goals of the European Union. The research also provides an analysis on coincidences between Latvia's GDP, energy intensity and carbon intensity, as well as studies the input of the largest industries in Latvia on the country's energy intensity and provides suggestions for improving the manufacturing industry from the perspective of energy savings.","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126005678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Quality assurance in developing of international electrical engineering study programs 国际电气工程研究项目开发的质量保证
2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI: 10.1109/RTUCON48111.2019.8982263
D. Zalostiba, J. Caiko, A. Žiravecka, A. Patlins, N. Kunicina, L. Ribickis
{"title":"Quality assurance in developing of international electrical engineering study programs","authors":"D. Zalostiba, J. Caiko, A. Žiravecka, A. Patlins, N. Kunicina, L. Ribickis","doi":"10.1109/RTUCON48111.2019.8982263","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982263","url":null,"abstract":"The quality assurance process for international study programs are developed taking in to account requirements on the national level, Bologna process, as well as international experience of EU partners. The establishment of successful study program in engineering topics is analysed in the article. The quality assurance on international dimension, and development project quality monitoring activity plan for Erasmus plus KA 2 projects are discussed. The internal, external as well as international procedures are discussed. The quality control planning in cooperation with EU neighborhood region e.i. Western Balkan region countries, as well as Russia, Mongolia, Vietnam and Kazakhstan are discussed as examples for new academic programs and double diploma study programs.","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124647362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Mapping of Distributed Power Generation Versus Biomass Availability 分布式发电与生物质可用性的映射
2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI: 10.1109/RTUCON48111.2019.8982373
Linda Ieviņa, Artis Vidžups, A. Blumberga, D. Blumberga
{"title":"Mapping of Distributed Power Generation Versus Biomass Availability","authors":"Linda Ieviņa, Artis Vidžups, A. Blumberga, D. Blumberga","doi":"10.1109/RTUCON48111.2019.8982373","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982373","url":null,"abstract":"Distributed electricity production by use of cogeneration units fueled by biomass is a sustainable solution towards energy production with higher efficiency, as well as increase the share of renewabIes. In Latvia forest wood stock is continuously increasing, suggesting that forest resources might be used more intensively. However, in order to meet the growing demand for energy wood and ensure a sustainable forest management at the same time, it is necessary to search for more sustainable approaches to wood use for energy. Present study examines the potential of low-quality wood stock increase for the development of distributed electricity generation, using a spatial assessment. Calculations show that the increase of low-quality forest wood resources could provide 629.72 GWh of electricity per year, meaning that CHP plants with total installed power of 73 MW could run on the growth of low-quality wood.","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126430098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
An attractive way to teach programming basics based on a graphical display module 一个有吸引力的方法来教基于图形显示模块的编程基础
2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI: 10.1109/RTUCON48111.2019.8982290
M. Terauds, Tatjana Solovjova
{"title":"An attractive way to teach programming basics based on a graphical display module","authors":"M. Terauds, Tatjana Solovjova","doi":"10.1109/RTUCON48111.2019.8982290","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982290","url":null,"abstract":"This article describes some ideas how to make a C programming course more interesting for students. Nowadays, students prefer classes using modern technologies rather than more traditional way of learning [1]. Interest motivates students to study harder and get better results. This paper describes an example how to learn programming with fun. It is based on the classic Snake game, implemented on an Arduino microcontroller connected to a graphical display. This paper describes the experience at the Riga Technical University and also analyzes the role of educator in adopting programming examples in learning process.","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129167744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On Approximate Estimation of Emitters Injection Ability Limit in p-i-n Structures p-i-n结构中发射体注入能力极限的近似估计
2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI: 10.1109/RTUCON48111.2019.8982301
S. Shevchenko, B. V. Ivanov, A. Smirnov, V. Luchinin, V. Ilyin, A. Afanasyev
{"title":"On Approximate Estimation of Emitters Injection Ability Limit in p-i-n Structures","authors":"S. Shevchenko, B. V. Ivanov, A. Smirnov, V. Luchinin, V. Ilyin, A. Afanasyev","doi":"10.1109/RTUCON48111.2019.8982301","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982301","url":null,"abstract":"The classical theory of p-i-n rectifiers operation at high current densities [8] is generalized to the case of incomplete dopants ionization and bandgap narrowing in heavily doped regions. An impact of the following effects on the emitters injection coefficients in 4H-SiC p-i-n structures is shown. The limiting values of minority carriers' charges, which can be stored in heavily doped emitters of drift step recovery diodes, are estimated. A comparative analysis of Si and 4H-SiC p-i-n structures behavior has been carried out. The results of theoretical study are in reasonable agreement with the results of computer simulation in Synopsys Sentaurus TCAD software.","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124564312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Numerical comparison of coils devoted for high fields by 2D planar and axisymmetric FEM models 高场专用线圈二维平面与轴对称有限元模型的数值比较
2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2019-10-01 DOI: 10.1109/RTUCON48111.2019.8982311
M. Stępień
{"title":"Numerical comparison of coils devoted for high fields by 2D planar and axisymmetric FEM models","authors":"M. Stępień","doi":"10.1109/RTUCON48111.2019.8982311","DOIUrl":"https://doi.org/10.1109/RTUCON48111.2019.8982311","url":null,"abstract":"The paper is focused on numerical analysis of inductive elements used for high current applications (e.g. applications with superconductors). The subject of the analysis is solenoidal coil with ferromagnetic core. The coil is analyzed in respect of geometry data having its equivalent electrical parameters (load current and inductance) fixed. Some aspects of numerical modelling based on 2D approach is discussed. Two different models are taken into consideration - axisymmetric and planar one. Nonlinear properties of magnetic core are taken into account. Results calculated for both types of models are compared and the influence of model simplification on the results is discussed. The analysis is based on commercial software ANSYS and it is carried out using scripts of ANSYS Parametric Design Language (APDL).","PeriodicalId":317349,"journal":{"name":"2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127345464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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