Pub Date : 2015-09-01DOI: 10.1109/CPEE.2015.7333375
P. Stakhiv, O. Hoholyuk
In this paper the problems of electric power systems creation and their further adaptation to modern software tools is considered. The discrete mathematical macromodels of electric power systems and approaches for their creation based on experimental data are discussed.
{"title":"Macromodeling as an alternative approach for electric power systems modeling using ATP and MATLAB/Simulink","authors":"P. Stakhiv, O. Hoholyuk","doi":"10.1109/CPEE.2015.7333375","DOIUrl":"https://doi.org/10.1109/CPEE.2015.7333375","url":null,"abstract":"In this paper the problems of electric power systems creation and their further adaptation to modern software tools is considered. The discrete mathematical macromodels of electric power systems and approaches for their creation based on experimental data are discussed.","PeriodicalId":135123,"journal":{"name":"2015 16th International Conference on Computational Problems of Electrical Engineering (CPEE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121875185","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 : 2015-09-01DOI: 10.1109/CPEE.2015.7333355
M. Moradi, M. R. Besmi, A. Doroudi, M. Fazli
During last decade, the concept of a variable speed wind turbine equipped with doubly fed induction generator (DFIG) has received increasing attention due to its noticeable advantages over other wind turbine generator concepts. New configuration of DFIG is single external feeding of DFIG (SEF-DFIG) where a rotor side converter (RSC) replaces the back to back variable frequency converter (VFC) in the conventional DFIG. The main issue of wind turbines that equipped DFIG and SEF-DFIG is the grid faults or low voltage ride through capability. In this paper, a new solution for uninterrupted operation of wind turbine driving a SEF-DFIG has been proposed during fault condition in the grid. A fault current limiter (FCL) is placed in series with the rotor circuit. During fault condition FCL enters a impedance in the rotor circuit to inhabit increasing of current in the rotor circuit. When the fault is cleared the FCL bypasses the impedance. A static synchronous compensator (STATCOM) has been applied for supplying required reactive power in faults and steady states. Capability and modeling accuracy of the proposed method confirmed with simulating a sample power system in PSCAD/EMTDC software.
{"title":"Effects of FCL on operation of SEF-DFIG in wind turbine systems during grid fault","authors":"M. Moradi, M. R. Besmi, A. Doroudi, M. Fazli","doi":"10.1109/CPEE.2015.7333355","DOIUrl":"https://doi.org/10.1109/CPEE.2015.7333355","url":null,"abstract":"During last decade, the concept of a variable speed wind turbine equipped with doubly fed induction generator (DFIG) has received increasing attention due to its noticeable advantages over other wind turbine generator concepts. New configuration of DFIG is single external feeding of DFIG (SEF-DFIG) where a rotor side converter (RSC) replaces the back to back variable frequency converter (VFC) in the conventional DFIG. The main issue of wind turbines that equipped DFIG and SEF-DFIG is the grid faults or low voltage ride through capability. In this paper, a new solution for uninterrupted operation of wind turbine driving a SEF-DFIG has been proposed during fault condition in the grid. A fault current limiter (FCL) is placed in series with the rotor circuit. During fault condition FCL enters a impedance in the rotor circuit to inhabit increasing of current in the rotor circuit. When the fault is cleared the FCL bypasses the impedance. A static synchronous compensator (STATCOM) has been applied for supplying required reactive power in faults and steady states. Capability and modeling accuracy of the proposed method confirmed with simulating a sample power system in PSCAD/EMTDC software.","PeriodicalId":135123,"journal":{"name":"2015 16th International Conference on Computational Problems of Electrical Engineering (CPEE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115778293","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 : 2015-09-01DOI: 10.1109/CPEE.2015.7333360
I. Pentegov, V. Sydorets, Iuliia V. Bondarenko, Oleksandr F. Bondarenko, P. Safronov
The appearing of supercapacitor internal resistance influence on efficiency of energy delivery in resistance welding circuit was studied in the paper. The dependencies of supercapacitor energy storage efficiency on load resistance were obtained. The limits of supercapacitor use for resistance welding area were determined.
{"title":"Estimation of supercapacitor efficiency in use for resistance welding","authors":"I. Pentegov, V. Sydorets, Iuliia V. Bondarenko, Oleksandr F. Bondarenko, P. Safronov","doi":"10.1109/CPEE.2015.7333360","DOIUrl":"https://doi.org/10.1109/CPEE.2015.7333360","url":null,"abstract":"The appearing of supercapacitor internal resistance influence on efficiency of energy delivery in resistance welding circuit was studied in the paper. The dependencies of supercapacitor energy storage efficiency on load resistance were obtained. The limits of supercapacitor use for resistance welding area were determined.","PeriodicalId":135123,"journal":{"name":"2015 16th International Conference on Computational Problems of Electrical Engineering (CPEE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125759420","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 : 2015-09-01DOI: 10.1109/CPEE.2015.7333366
M. Seheda, T. Mazur, Oleksandr Kurylyshyn
A mathematical model intended for research of wave processes in high-voltage two-windings transformers was developed. The variable separation method was used to solve the integral-differential equations describing the process under research. The voltage distribution in the transformer windings under the influence of the impulse overvoltages was analyzed.
{"title":"Mathematical model for investigation of wave processes in high-voltage two-winding transformers","authors":"M. Seheda, T. Mazur, Oleksandr Kurylyshyn","doi":"10.1109/CPEE.2015.7333366","DOIUrl":"https://doi.org/10.1109/CPEE.2015.7333366","url":null,"abstract":"A mathematical model intended for research of wave processes in high-voltage two-windings transformers was developed. The variable separation method was used to solve the integral-differential equations describing the process under research. The voltage distribution in the transformer windings under the influence of the impulse overvoltages was analyzed.","PeriodicalId":135123,"journal":{"name":"2015 16th International Conference on Computational Problems of Electrical Engineering (CPEE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133636427","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}
In this paper Ansys Maxwell calculation result of 3D magnetic field in a double-stator screw induction motor with hollow outer ferromagnetic rotor is given.
本文给出了空心外铁磁转子双定子螺杆式异步电动机三维磁场的Ansys Maxwell计算结果。
{"title":"3D magnetic filed distribution in a screw double-stator induction motor","authors":"N. Zablodskiy, V. Pliugin","doi":"10.2139/ssrn.3201902","DOIUrl":"https://doi.org/10.2139/ssrn.3201902","url":null,"abstract":"In this paper Ansys Maxwell calculation result of 3D magnetic field in a double-stator screw induction motor with hollow outer ferromagnetic rotor is given.","PeriodicalId":135123,"journal":{"name":"2015 16th International Conference on Computational Problems of Electrical Engineering (CPEE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134618960","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 : 2015-09-01DOI: 10.1109/CPEE.2015.7333392
V. Zvaritch, E. Glazkova
A new approach to statistical simulation of the information signals that can be described mathematically by linear stochastic processes is presented. The paper contains some knowledge of the Linear Stochastic Process Theory, a modelling processes classification, and discusses a method of simulation problems solving in the case when the mean and jumps spectrum of the process being simulated is given. The simulation of linear autoregressive processes is considered as an example of the proposed method usage.
{"title":"Application of linear AR and ARMA processes for simulation of power equipment diagnostic systems information signals","authors":"V. Zvaritch, E. Glazkova","doi":"10.1109/CPEE.2015.7333392","DOIUrl":"https://doi.org/10.1109/CPEE.2015.7333392","url":null,"abstract":"A new approach to statistical simulation of the information signals that can be described mathematically by linear stochastic processes is presented. The paper contains some knowledge of the Linear Stochastic Process Theory, a modelling processes classification, and discusses a method of simulation problems solving in the case when the mean and jumps spectrum of the process being simulated is given. The simulation of linear autoregressive processes is considered as an example of the proposed method usage.","PeriodicalId":135123,"journal":{"name":"2015 16th International Conference on Computational Problems of Electrical Engineering (CPEE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121602044","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 : 2015-09-01DOI: 10.1109/CPEE.2015.7333387
M. Zagirnyak, P. Kostenko
Huge information content in the World Wide Web leads to redundancy of search result that can reach hundred thousands of pages. Due to this an end user sometimes finds necessary materials not in the top ten links. Method of local refining of document relevance is proposed in the paper. The proposed method is based on user's local behavioral description. Its main module comprises collecting the data from user's Web-surfing and monitoring the Web-resources retrieved in response to her/his web search query which are the most interesting for the user. Local search results are grounded on the base search engine results page and keyword search query. The research results indicate the 15% increase in search results quality.
{"title":"Method of refining of document relevance in search engines based on a user's local behavioral description","authors":"M. Zagirnyak, P. Kostenko","doi":"10.1109/CPEE.2015.7333387","DOIUrl":"https://doi.org/10.1109/CPEE.2015.7333387","url":null,"abstract":"Huge information content in the World Wide Web leads to redundancy of search result that can reach hundred thousands of pages. Due to this an end user sometimes finds necessary materials not in the top ten links. Method of local refining of document relevance is proposed in the paper. The proposed method is based on user's local behavioral description. Its main module comprises collecting the data from user's Web-surfing and monitoring the Web-resources retrieved in response to her/his web search query which are the most interesting for the user. Local search results are grounded on the base search engine results page and keyword search query. The research results indicate the 15% increase in search results quality.","PeriodicalId":135123,"journal":{"name":"2015 16th International Conference on Computational Problems of Electrical Engineering (CPEE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133878897","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 : 2015-09-01DOI: 10.1109/CPEE.2015.7333349
O. Lozynskyy, Y. Paranchuk, R. Paranchuk
A combined law of the control signal creation for arc steel melting furnace electrodes moving based on the principle of fuzzy control and the system structure for its implementation are proposed.
提出了一种基于模糊控制原理的电弧炼钢炉电极运动控制信号产生的组合规律及其实现的系统结构。
{"title":"Fuzzy control law of electrode travel in arc steelmaking furnace","authors":"O. Lozynskyy, Y. Paranchuk, R. Paranchuk","doi":"10.1109/CPEE.2015.7333349","DOIUrl":"https://doi.org/10.1109/CPEE.2015.7333349","url":null,"abstract":"A combined law of the control signal creation for arc steel melting furnace electrodes moving based on the principle of fuzzy control and the system structure for its implementation are proposed.","PeriodicalId":135123,"journal":{"name":"2015 16th International Conference on Computational Problems of Electrical Engineering (CPEE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132392911","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 : 2015-09-01DOI: 10.1109/CPEE.2015.7333391
V. Zolotarev, R. Belyanin, Y. Peretyatko, Sergey Lamanov
The criteria of optimal control of capacity of compensation capacitors in power supply systems of installations of induction melting of metals with a full unloading their liquid phase. The technique of improving productivity and energy efficiency of such induction systems is proved.
{"title":"The optimization of power supply modes of induction melting apparatus with a total metal draining","authors":"V. Zolotarev, R. Belyanin, Y. Peretyatko, Sergey Lamanov","doi":"10.1109/CPEE.2015.7333391","DOIUrl":"https://doi.org/10.1109/CPEE.2015.7333391","url":null,"abstract":"The criteria of optimal control of capacity of compensation capacitors in power supply systems of installations of induction melting of metals with a full unloading their liquid phase. The technique of improving productivity and energy efficiency of such induction systems is proved.","PeriodicalId":135123,"journal":{"name":"2015 16th International Conference on Computational Problems of Electrical Engineering (CPEE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124819124","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 : 2015-09-01DOI: 10.1109/CPEE.2015.7333338
A. Kandyba, M. Hyla, I. Kurytnik
Method of controlling transistors in ac voltage PWM controller aimed at eliminating commutation overvoltages in RL-type load circuit is proposed in the paper. The method is based upon keeping continuity of load current; this is achieved by appropriate control of transistors on the basis of detecting voltage sign (polarity) at the supply terminal and detecting load current sign (polarity). This type of control does not depend on character of the load and it makes possible increase of converter's efficiency by elimination of RC circuits protecting transistors from overvoltages. The scheme of main circuit is shown as well as waveforms demonstrating the control principle. Four different characteristic operating conditions are discussed and illustrated with simulation results. Measurements have been run to verify the method with real 3-phase ac controller and results of these tests are presented.
{"title":"Control of transistors in AC voltage PWM controller with elimination of commutation overvoltages","authors":"A. Kandyba, M. Hyla, I. Kurytnik","doi":"10.1109/CPEE.2015.7333338","DOIUrl":"https://doi.org/10.1109/CPEE.2015.7333338","url":null,"abstract":"Method of controlling transistors in ac voltage PWM controller aimed at eliminating commutation overvoltages in RL-type load circuit is proposed in the paper. The method is based upon keeping continuity of load current; this is achieved by appropriate control of transistors on the basis of detecting voltage sign (polarity) at the supply terminal and detecting load current sign (polarity). This type of control does not depend on character of the load and it makes possible increase of converter's efficiency by elimination of RC circuits protecting transistors from overvoltages. The scheme of main circuit is shown as well as waveforms demonstrating the control principle. Four different characteristic operating conditions are discussed and illustrated with simulation results. Measurements have been run to verify the method with real 3-phase ac controller and results of these tests are presented.","PeriodicalId":135123,"journal":{"name":"2015 16th International Conference on Computational Problems of Electrical Engineering (CPEE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130046999","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：