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2020 21st International Scientific Conference on Electric Power Engineering (EPE)最新文献

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Simulation analysis of switching performance of GaN power transistors in a high-voltage configuration 高压配置下GaN功率晶体管开关性能的仿真分析
2020 21st International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2020-10-19 DOI: 10.1109/EPE51172.2020.9269164
R. Zelnik, M. Pipíška
{"title":"Simulation analysis of switching performance of GaN power transistors in a high-voltage configuration","authors":"R. Zelnik, M. Pipíška","doi":"10.1109/EPE51172.2020.9269164","DOIUrl":"https://doi.org/10.1109/EPE51172.2020.9269164","url":null,"abstract":"The paper deals with the simulation analysis of the switching performance of a GaN power transistor connected in high voltage configuration (blocking capability of 1.2 kV). The evaluation was realized with the use of high-accurate simulation models of selected GaN transistors (GS66506T), while hard-switching performance in a wide range of operational conditions of transistors was varied (drain current, switching frequency). Experiments have been realized under consideration of 800 V of operational voltage what reflects operational conditions of transistor if 3-phase PFC is considered. The switching frequency was changed in the range of 100kHz–700kHz, while drain current was varied from 5 A–15 A. Parametric evaluation of switching losses under each operational condition was done. Achieved results are useful for optimization of the performance of target power semiconductor converter form thermal performance point of view, or efficiency point of view.","PeriodicalId":177031,"journal":{"name":"2020 21st International Scientific Conference on Electric Power Engineering (EPE)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134519410","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
Comparison of behavior of electroinsulating oils using thermo-hysteresis dependencies 用热滞后相关性比较电绝缘油的性能
2020 21st International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2020-10-19 DOI: 10.1109/EPE51172.2020.9269275
R. Cimbala, Peter Havran, P. Bartko
{"title":"Comparison of behavior of electroinsulating oils using thermo-hysteresis dependencies","authors":"R. Cimbala, Peter Havran, P. Bartko","doi":"10.1109/EPE51172.2020.9269275","DOIUrl":"https://doi.org/10.1109/EPE51172.2020.9269275","url":null,"abstract":"This publication deals with the investigation and comparison of the loss dependences of two liquid insulating materials due to temperature increase. Theoretical aspects describe the degradation effects on insulating oils associated with moisture analysis and thermal stress. Practical considerations include an experimental measuring workplace with insulating oil samples used and a tabular respectively graphical analysis of the dissipation factor data on temperature.","PeriodicalId":177031,"journal":{"name":"2020 21st International Scientific Conference on Electric Power Engineering (EPE)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115484159","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
Electrical strength of the oil-paper insulation system at DC and AC voltage 油纸绝缘系统在直流和交流电压下的电气强度
2020 21st International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2020-10-19 DOI: 10.1109/EPE51172.2020.9269165
I. Kolcunová, J. Zbojovský, M. Pavlík, Dušan Medved’, B. Dolník, Samuel Bucko
{"title":"Electrical strength of the oil-paper insulation system at DC and AC voltage","authors":"I. Kolcunová, J. Zbojovský, M. Pavlík, Dušan Medved’, B. Dolník, Samuel Bucko","doi":"10.1109/EPE51172.2020.9269165","DOIUrl":"https://doi.org/10.1109/EPE51172.2020.9269165","url":null,"abstract":"In power transformers in which is dominated the oil-paper insulation system, it is the effort to use innovative insulating materials to achieve greater quality, reliability and longer service life of the transformer. In this paper, we present the results of research into the insulating properties of an oil-paper insulation system in a DC and AC electric field. In the experiments MOL TO 40A transformer oil and two types of paper used in transformers, KREMPEL DPP and insulating paper used in BEZ transformers, were used. The results from the experiments show that KREMPEL insulating paper has a higher electrical strength and the electrical strength of both oil-impregnated insulating papers is greater when applying DC voltage.","PeriodicalId":177031,"journal":{"name":"2020 21st International Scientific Conference on Electric Power Engineering (EPE)","volume":"152 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114790043","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
Overview of thyristor module parameters for fast static VAr compensation available on the market 市场上可用于快速静态无功补偿的晶闸管模块参数概述
2020 21st International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2020-10-19 DOI: 10.1109/EPE51172.2020.9269169
M. Novák, Pavel Ringelhán, L. Kukačka
{"title":"Overview of thyristor module parameters for fast static VAr compensation available on the market","authors":"M. Novák, Pavel Ringelhán, L. Kukačka","doi":"10.1109/EPE51172.2020.9269169","DOIUrl":"https://doi.org/10.1109/EPE51172.2020.9269169","url":null,"abstract":"The main aim of this overview is to explore the basic physical and design principles of power switch design according to the parameters of the sold devices. The study is focused only on thyristor switching modules designed for static power factor compensators. For the study, data were obtained from 161 devices from freely available sources on the Internet and from corporate promotional materials. Comparison of thyristor off-state voltage, control voltage, temperature range, power losses, weight and other parameters are presented. The physical basis of most parameters across different manufacturers is obvious.","PeriodicalId":177031,"journal":{"name":"2020 21st International Scientific Conference on Electric Power Engineering (EPE)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117071644","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
The possibilities of reducing energy consumption for the preparation of hot water by suitable switching of the heat pump 通过适当的热泵开关，降低热水制备能耗的可能性
2020 21st International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2020-10-19 DOI: 10.1109/EPE51172.2020.9269251
Jan Rimbala, J. Kynčl
{"title":"The possibilities of reducing energy consumption for the preparation of hot water by suitable switching of the heat pump","authors":"Jan Rimbala, J. Kynčl","doi":"10.1109/EPE51172.2020.9269251","DOIUrl":"https://doi.org/10.1109/EPE51172.2020.9269251","url":null,"abstract":"The article deals with the possibilities of reducing energy consumption for the preparation of hot water by suitable switching of the air-to-water heat pump according to the expected time course of the outdoor air temperature. Higher temperature of the medium from which we pump heat always leads to an improvement of the heating factor. The article describes an idealized model taking into account two water storage The consumed electrical energy is always evaluated at the worst possible switching time of the heat pump, at a fixed switching time and with optimal switching. The considered procedure may be suitable for buildings with high hot water consumption, such as hospitals, retirement homes, or for small industrial enterprises.","PeriodicalId":177031,"journal":{"name":"2020 21st International Scientific Conference on Electric Power Engineering (EPE)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131877355","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
Light Trespass in Street LED Lighting Systems 路灯LED照明系统中的光侵入
2020 21st International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2020-10-19 DOI: 10.1109/EPE51172.2020.9269248
M. Balsky, Theodor Terrich
{"title":"Light Trespass in Street LED Lighting Systems","authors":"M. Balsky, Theodor Terrich","doi":"10.1109/EPE51172.2020.9269248","DOIUrl":"https://doi.org/10.1109/EPE51172.2020.9269248","url":null,"abstract":"Increasing the efficiency of lighting systems can be achieved not only by increasing the luminous efficacy of the light sources, but also by reducing the useless luminous flux, which is referred to as the light trespass. The luminous flux is in artificial lighting systems generated from electrical power and therefore the light trespass means the loss of electrical power. The paper deals with the possibilities of increasing the efficiency of street lighting by optimizing the luminous flux distribution of luminaires and its influence on the light trespass.","PeriodicalId":177031,"journal":{"name":"2020 21st International Scientific Conference on Electric Power Engineering (EPE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130403682","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: 3
Energy Harvesting and Communication Systems for Power Lines Inspection Robot 电力线巡检机器人能量采集与通信系统
2020 21st International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2020-10-19 DOI: 10.1109/EPE51172.2020.9269193
Valenta Pavel, Žahour Jiří, K. Jindřich, Kosturik Kamil, S. Jiří, Georgiev Vjačeslav
{"title":"Energy Harvesting and Communication Systems for Power Lines Inspection Robot","authors":"Valenta Pavel, Žahour Jiří, K. Jindřich, Kosturik Kamil, S. Jiří, Georgiev Vjačeslav","doi":"10.1109/EPE51172.2020.9269193","DOIUrl":"https://doi.org/10.1109/EPE51172.2020.9269193","url":null,"abstract":"For an autonomic power lines inspection robot the energy harvesting system and communication systems are being developed. In this paper the energy harvesting based on toroidal split core current transformer is described. The maximal output power is depend on the current in power line, the transformer core geometry and other factors. The results from the testing and measuring of the current transformer are presented. Also the structure of the communication system is described.","PeriodicalId":177031,"journal":{"name":"2020 21st International Scientific Conference on Electric Power Engineering (EPE)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121366198","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
Theoretical measurement limits of parameters of commissioned heat pumps 已投产热泵参数的理论测量极限
2020 21st International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2020-10-19 DOI: 10.1109/EPE51172.2020.9269188
Jan Rimbala, J. Kynčl
{"title":"Theoretical measurement limits of parameters of commissioned heat pumps","authors":"Jan Rimbala, J. Kynčl","doi":"10.1109/EPE51172.2020.9269188","DOIUrl":"https://doi.org/10.1109/EPE51172.2020.9269188","url":null,"abstract":"This paper analyzes the uncertainties of measuring the heat and cooling factors of compressor and absorption heat pumps. The article analyzes the uncertainties of measurement and, in two case studies, it is shown that without the use of laboratory calibrated measuring instruments, the cooling and heating factor plowing is considerably inaccurate and is better based on manufacturer data.","PeriodicalId":177031,"journal":{"name":"2020 21st International Scientific Conference on Electric Power Engineering (EPE)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121488030","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
The impact of reconfiguration on power losses in smart networks 智能电网重构对电力损耗的影响
2020 21st International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2020-10-19 DOI: 10.1109/EPE51172.2020.9269189
Daniel Pál, L. Beňa, J. Urbanský, Maksym Oliinyk
{"title":"The impact of reconfiguration on power losses in smart networks","authors":"Daniel Pál, L. Beňa, J. Urbanský, Maksym Oliinyk","doi":"10.1109/EPE51172.2020.9269189","DOIUrl":"https://doi.org/10.1109/EPE51172.2020.9269189","url":null,"abstract":"There is quite a lot of losses in electricity transmission, because is produced in large power plants that are located at great distances from end-users. About 10% of the energy is lost during transmission. Power losses depend on climatic conditions, parameters, and network configuration. Some can be influenced, some not. Climate conditions cannot be influenced, but network topology can be changed. This article focuses on the use of controlled switching and reconfiguration divisional switches on power lines to influence the power losses in the network.","PeriodicalId":177031,"journal":{"name":"2020 21st International Scientific Conference on Electric Power Engineering (EPE)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133162394","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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