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2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)最新文献

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Factors affecting the value of network medium voltage 影响网络中压值的因素
2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2015-12-03 DOI: 10.1109/RTUCON.2015.7343112
J. Survilo
{"title":"Factors affecting the value of network medium voltage","authors":"J. Survilo","doi":"10.1109/RTUCON.2015.7343112","DOIUrl":"https://doi.org/10.1109/RTUCON.2015.7343112","url":null,"abstract":"In distribution network low voltage nominal is defined by consumer but medium voltage nominal can be selected at discretion which is different in various countries. If the costs of network is not sensitive to medium voltage nominal, then, obviously, the lower the voltage the better. The studied model showed that costs abruptly diminish with load density and/or sizes of fed zones growing (up to certain limit), cost and voltage losses are little sensitive to voltage nominal at uniform load density, cost only slightly growing with medium voltage. While at non-uniform load density (when thick load alternates with sparsely populated area) the network costs are critical to medium voltage due to voltage loss, the latter strongly diminishing with medium voltage growing, making it possible to increase medium voltage fed zone. AH the above is dominated by equipment prices and other economic indices.","PeriodicalId":389419,"journal":{"name":"2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117186674","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
Selection of standard dynamic model for control systems of mechatronic modules 机电模块控制系统标准动力学模型的选择
2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2015-12-03 DOI: 10.1109/RTUCON.2015.7343119
N. Gnezdov, S. Lebedev, A. Kolganov
{"title":"Selection of standard dynamic model for control systems of mechatronic modules","authors":"N. Gnezdov, S. Lebedev, A. Kolganov","doi":"10.1109/RTUCON.2015.7343119","DOIUrl":"https://doi.org/10.1109/RTUCON.2015.7343119","url":null,"abstract":"The choice of the form and parameters of root distribution of the characteristic equation which define dynamic model of mechatronic modules is considered. Time and frequency response of the most known distributions are investigated. Analytical relations and techniques of practical calculations of parameters of distributions for given value of bandwidth are offered. It is shown that Besselian root distribution gives advantages on speed and monotony before other distributions and provides the minimum distortions at realization of control signals also.","PeriodicalId":389419,"journal":{"name":"2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114514682","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
Smooth and precise adaptive train braking system developing and testing 平稳、精确的列车自适应制动系统开发与测试
2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2015-12-03 DOI: 10.1109/RTUCON.2015.7343148
A. Potapovs, A. Levchenkov, M. Gorobetz
{"title":"Smooth and precise adaptive train braking system developing and testing","authors":"A. Potapovs, A. Levchenkov, M. Gorobetz","doi":"10.1109/RTUCON.2015.7343148","DOIUrl":"https://doi.org/10.1109/RTUCON.2015.7343148","url":null,"abstract":"This paper is devoted to the investigation and development of the transport control system applying adaptive control algorithms and embedded intelligent devices. The introduction contains the basis of the topicality of the subject in accordance with which the aim and objectives of the thesis are determined. Some of the adaptive search algorithms are studied and the task is to test and select the most suitable and the most effective of them. The examining of the prototype under real operation conditions are described in this paper.","PeriodicalId":389419,"journal":{"name":"2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128119229","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 analysis of control algorithms of induction motor electric drive with two-phase PFC1 两相PFC1感应电机电驱动控制算法分析
2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2015-12-03 DOI: 10.1109/RTUCON.2015.7343114
A. Ushkov, A. Kolganov
{"title":"The analysis of control algorithms of induction motor electric drive with two-phase PFC1","authors":"A. Ushkov, A. Kolganov","doi":"10.1109/RTUCON.2015.7343114","DOIUrl":"https://doi.org/10.1109/RTUCON.2015.7343114","url":null,"abstract":"The energy efficiency of the asynchronous electric drive can be improved by introducing a power factor corrector (PFC) as its constituent part. The greatest effect of increasing the power factor and improving the electromagnetic compatibility of the electric drive is achieved by using multiphase PFC. However, control algorithms of electric drives with such power factors are studied insufficiently. Therefore, a comparative analysis of these algorithms according to their performance criteria is required.","PeriodicalId":389419,"journal":{"name":"2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131005778","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
Light flicker evaluation using root mean square voltage waveforms 使用均方根电压波形进行光闪评估
2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2015-12-03 DOI: 10.1109/RTUCON.2015.7343180
Ebrahim Balouji, O. Salor
{"title":"Light flicker evaluation using root mean square voltage waveforms","authors":"Ebrahim Balouji, O. Salor","doi":"10.1109/RTUCON.2015.7343180","DOIUrl":"https://doi.org/10.1109/RTUCON.2015.7343180","url":null,"abstract":"In this paper, a new method for evaluation of low-frequency voltage fluctuations, which cause light flicker, based on root-mean-square (RMS) computations of voltage waveforms, is presented. According to the IEC and IEEE standards, light flicker computation is achieved on the raw data of the voltage waveforms. However, in real world systems, since raw data storage is expensive and difficult, only RMS values of the voltage are stored for later analysis. The work presented in this paper, proposes a new method to compute light flicker directly from RMS values of the voltage, which are computed based on the IEC power quality standard, IİC 61000-4-30. Beginning from a low-frequency-modulated signal, analytical terms of the flicker frequency components are derived in terms of the RMS voltage waveforms. Then those flicker components are used to compute the flicker sensation values, based on the previously shown fact that flicker sensation is the result of additive effects of the squared flicker frequency components. The comparison of the results with those of the digital realization of the IEC flickermeter shows that the developed method reveals satisfactory estimations of flicker sensation values, obtained from RMS of the voltage waveforms. It can be mentioned that this method provides an accurate, simple, and fast solution for the flicker computation, where raw data of the voltage waveforms are not available, but RMS values are present. The method can be easily adopted by smart-grid applications, where fast and accurate flicker computation is required from RMS voltage waveforms, especially for generating control signals for the FACTS devices.","PeriodicalId":389419,"journal":{"name":"2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121708835","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
Wide-area measurements-based out-of-step protection system 广域测量型失步保护系统
2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2015-12-03 DOI: 10.1109/RTUCON.2015.7343113
A. Sauhats, Andrejs Utans, Edite Biela-Dailidovicha
{"title":"Wide-area measurements-based out-of-step protection system","authors":"A. Sauhats, Andrejs Utans, Edite Biela-Dailidovicha","doi":"10.1109/RTUCON.2015.7343113","DOIUrl":"https://doi.org/10.1109/RTUCON.2015.7343113","url":null,"abstract":"From time to time a sequence of unexpected and often overlapping contingencies may lead to power system angular instability and even blackouts if not addressed adequately by means of out-of-step protection system. This paper proposes the out-of-step protection system structure, which is based on generation sources electromotive forces vectors angle control. Protection system consists of several, strategically located terminals, exchanging with information in real-time by means of communication network. Protection system structure, principles of operation and implementation problems addressed in the paper, as also IEC 61850 communication standard-based implementation described.","PeriodicalId":389419,"journal":{"name":"2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121073971","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: 9
Full soft-switching bidirectional current-fed DC-DC converter 全软开关双向电流馈电DC-DC变换器
2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2015-12-03 DOI: 10.1109/RTUCON.2015.7343149
A. Chub, R. Kosenko, A. Blinov, V. Ivakhno, V. Zamaruiev, B. Styslo
{"title":"Full soft-switching bidirectional current-fed DC-DC converter","authors":"A. Chub, R. Kosenko, A. Blinov, V. Ivakhno, V. Zamaruiev, B. Styslo","doi":"10.1109/RTUCON.2015.7343149","DOIUrl":"https://doi.org/10.1109/RTUCON.2015.7343149","url":null,"abstract":"The focus is on a switching control strategy for the galvanically isolated bidirectional current-fed dc-dc converter. The converter under study employs the current-fed full-bridge stage at the low-voltage side and the voltage-fed half-bridge stage at the high-voltage side. The current-fed side of the converter utilizes four-quadrant switches comprised of two MOSFETs each. The switching sequence proposed enables soft-switching operation of all switches in both directions of energy transfer for a wide range of dc voltage gain and load variations. Moreover, it features natural clamping and thus eliminates voltage overshoot at the turn-off of switches at the current-fed side. Full zero-current switching is achieved in the current-fed side, while full zero-voltage switching is accommodated in the voltage-fed side. Theoretical predictions were verified with simulations in PSIM 9.","PeriodicalId":389419,"journal":{"name":"2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"210 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122633305","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: 20
Analysis of automation and heating processes of 120 1 water boiler which is heated up by central heating boiler equipped with automatic briquettes feeding system — ABFS 对装有自动给煤系统ABFS的集中供热锅炉加热120水锅炉的自动化及加热过程进行了分析
2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2015-12-03 DOI: 10.1109/RTUCON.2015.7343125
Aigars Vītols, I. Rankis, Peteris Apse Apsitis
{"title":"Analysis of automation and heating processes of 120 1 water boiler which is heated up by central heating boiler equipped with automatic briquettes feeding system — ABFS","authors":"Aigars Vītols, I. Rankis, Peteris Apse Apsitis","doi":"10.1109/RTUCON.2015.7343125","DOIUrl":"https://doi.org/10.1109/RTUCON.2015.7343125","url":null,"abstract":"This paper presents analysis of automation and heating processes of 120 liters water boiler which is heated up by universal central heating boiler \"Dacon - FB 36\" which is equipped with experimental automatic briquettes feeding system.","PeriodicalId":389419,"journal":{"name":"2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"457 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116179973","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
Sensorless control of the three-dimensional crane using the Euler-Lagrange approach with a built-in state-spaee model 基于状态空间模型的欧拉-拉格朗日方法的三维起重机无传感器控制
2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2015-12-03 DOI: 10.1109/RTUCON.2015.7343138
A. Aksjonov, V. Vodovozov, E. Petlenkov
{"title":"Sensorless control of the three-dimensional crane using the Euler-Lagrange approach with a built-in state-spaee model","authors":"A. Aksjonov, V. Vodovozov, E. Petlenkov","doi":"10.1109/RTUCON.2015.7343138","DOIUrl":"https://doi.org/10.1109/RTUCON.2015.7343138","url":null,"abstract":"The mathematical model of the three-dimensional crane using the Euler-Lagrange approach is derived. A sensorless control solution for the system based on the model is proposed and explored in the Simulink® environment and on the laboratory stand. The obtained control design was simulated, analyzed and compared with existing encoder-based system provided by the 3DCrane manufacturer Inteco®. The topicality of the problem is due to the widely usage of gantry cranes in industry. The solution is proposed for the future research in sensorless and intelligent control of complex motor driven application.","PeriodicalId":389419,"journal":{"name":"2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131748950","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
DC-AC converter for load supply in autonomous wind-hydrogen power system 自主风氢发电系统的直流-交流变换器负载供电
2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2015-12-03 DOI: 10.1109/RTUCON.2015.7343118
G. Zaļeskis, I. Steiks, Aivais Pumpurs, O. Krievs
{"title":"DC-AC converter for load supply in autonomous wind-hydrogen power system","authors":"G. Zaļeskis, I. Steiks, Aivais Pumpurs, O. Krievs","doi":"10.1109/RTUCON.2015.7343118","DOIUrl":"https://doi.org/10.1109/RTUCON.2015.7343118","url":null,"abstract":"This paper is related to autonomous wind power system with typical power demand of 2 to 5kW. Presented power system is designed for private houses or small farms. In the case of low wind speed the energy is provided by energy storage, in mentioned system for this purpose the hydrogen fuel cell was chosen. The main purpose of this paper is to find optimal solutions for creation and control of DC/AC converter used for load supply in the autonomous power supply system. To make the power system more economically profitable the utilization of the heat of fuel cell cooling system should be accomplished. Various new-trend control methods should be implemented of the single-phase 5-level NPC converter therefore decreasing the size of the output filter compared to the implemented classical PWM method.","PeriodicalId":389419,"journal":{"name":"2015 56th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121307103","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
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