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2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek)最新文献

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Stability of the Equilibrium Position in Pulse Stabilizers with Pulse Width Modulation 脉宽调制脉冲稳定器平衡位置的稳定性
2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek) Pub Date : 2021-09-13 DOI: 10.1109/KhPIWeek53812.2021.9570082
O. Yurchenko, V. Martynov, D. Martynov
{"title":"Stability of the Equilibrium Position in Pulse Stabilizers with Pulse Width Modulation","authors":"O. Yurchenko, V. Martynov, D. Martynov","doi":"10.1109/KhPIWeek53812.2021.9570082","DOIUrl":"https://doi.org/10.1109/KhPIWeek53812.2021.9570082","url":null,"abstract":"A method for calculating the region of absolute stability of nonlinear impulse systems has been developed, using the averaging method considering the effect of discreteness of pulse-width modulation when generating a sinusoidal output voltage by grid-tie inverters with voltage feedback. The study of the stability region was carried out using the frequency criterion of absolute stability for nonlinear pulse systems. The calculation results are given, which are verified by experimental research.","PeriodicalId":365896,"journal":{"name":"2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131676565","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
Image Processing Technology to Determine the Parameters of the Internal Structure of Composite Materials 确定复合材料内部结构参数的图像处理技术
2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek) Pub Date : 2021-09-13 DOI: 10.1109/KhPIWeek53812.2021.9570099
M. Shapovalova, O. Vodka
{"title":"Image Processing Technology to Determine the Parameters of the Internal Structure of Composite Materials","authors":"M. Shapovalova, O. Vodka","doi":"10.1109/KhPIWeek53812.2021.9570099","DOIUrl":"https://doi.org/10.1109/KhPIWeek53812.2021.9570099","url":null,"abstract":"Automated intelligent decision-making systems, working with the use of mathematical methods of data processing, can reduce the influence of the human factor in the analysis, reduce the time spent on research, improve the accuracy and reliability of the results. They help automate the quality control process and enable association material properties to its microstructure. Numerical and experimental studies of the material microstructure can be implemented using hybrid methods with the introduction of computer simulation methods. The paper proposes to use the OpenCV technology for image analysis of cast iron with spherical graphite inclusions, followed by classification of the recognized material. The optimal parameters of image preprocessing and edge recognition are set. The result of the presented work is the distribution function of inclusions depending on their concentration on the plane.","PeriodicalId":365896,"journal":{"name":"2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132059073","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 Substantiation of Reconstruction of Power Distribution Networks Objects 配电网对象重构的实体化
2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek) Pub Date : 2021-09-13 DOI: 10.1109/KhPIWeek53812.2021.9570107
I. Trunova, O. Miroshnyk, O. Moroz, O. Savchenko, Volodymyr Pazyi Anatolii Sereda, S. Halko, R. Buinyi
{"title":"The Substantiation of Reconstruction of Power Distribution Networks Objects","authors":"I. Trunova, O. Miroshnyk, O. Moroz, O. Savchenko, Volodymyr Pazyi Anatolii Sereda, S. Halko, R. Buinyi","doi":"10.1109/KhPIWeek53812.2021.9570107","DOIUrl":"https://doi.org/10.1109/KhPIWeek53812.2021.9570107","url":null,"abstract":"The examples of improvement of educational methods for acquisition of competences for substantiation of reconstruction of power distribution networks objects by applicants of higher education taking into account requirements of new regulatory documents and modern tendencies in the electric power branch are offered. Recommendations for the implementation of risk-oriented thinking approaches in research on the priority of reconstruction of distribution network facilities have been developed. The development directions of advanced training programs for specialists of electric power branch for improvement of competences on integration of requirements of new normative documents and new methodical recommendations into the existing general system of the organization of Distribution System Operators activity are analysed.","PeriodicalId":365896,"journal":{"name":"2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek)","volume":"500 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123701496","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: 4
Electrode Materials for Hydrogen Production by Alkaline-Water Electrolysis Powered by Renewable Energy Sources 利用可再生能源进行碱-水电解制氢的电极材料
2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek) Pub Date : 2021-09-13 DOI: 10.1109/KhPIWeek53812.2021.9570062
A. Maizelis, A. Pilipenko
{"title":"Electrode Materials for Hydrogen Production by Alkaline-Water Electrolysis Powered by Renewable Energy Sources","authors":"A. Maizelis, A. Pilipenko","doi":"10.1109/KhPIWeek53812.2021.9570062","DOIUrl":"https://doi.org/10.1109/KhPIWeek53812.2021.9570062","url":null,"abstract":"Effectiveness of electrode materials for electrolizers working with renewable energy sources are discussed. The electrochemical behavior of low-alloy chrome-molybdenum-vanadium steel (12Cr1MoV) in a 5 mol.L−1 sodium hydroxide solution is presented and compared with steel of ordinary quality (Steel 3) and nickel that are used in electrolyzers for producing hydrogen. Weight loss tests show that the chrome-molybdenum-vanadium steel is more corrosion-resistant in the tested environment than Steel 3. Overvoltage of oxygen evolution reaction on 12Cr1MoV steel under galvanostatic conditions of 200 m.Arcmr−2 is 40 mV lower than on Steel 3 and 150 mV lower than on nickel. Chrome-molybdenum-vanadium steel is perspective to replace Steel 3 in alkaline water electrolysis both as electrode material and as substrate for different catalytic coatings. Multilayer coating [(Ni-Cu)/(Mi-Mi(OH)2)]n is proposed for use in alkaline electrolysis of water and in fuel cells in systems with renewable energy sources. Proposed electrodes are suitable for use in electrolyzes powered by renewable energy sources as they show lower corrosion rate during pauses and load changes.","PeriodicalId":365896,"journal":{"name":"2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133080264","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
Fabrication and Characterization of Heterojunction Based on a Copper Oxide Layer 基于氧化铜层异质结的制备与表征
2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek) Pub Date : 2021-09-13 DOI: 10.1109/KhPIWeek53812.2021.9569979
O. Diachenko, A. Opanasyuk, T. Protasova, P. Novák, J. Kováč
{"title":"Fabrication and Characterization of Heterojunction Based on a Copper Oxide Layer","authors":"O. Diachenko, A. Opanasyuk, T. Protasova, P. Novák, J. Kováč","doi":"10.1109/KhPIWeek53812.2021.9569979","DOIUrl":"https://doi.org/10.1109/KhPIWeek53812.2021.9569979","url":null,"abstract":"Copper oxide films were obtained using the method of pulsating spray pyrolysis on glass substrates and substrates with an ITO sublayer. Their morphological and structural characteristics, as well as current-voltage characteristics of the n-ITO / p-CuO / Ag heterojunction, were studied. Electrical measurements indicate the diode nature of the current-voltage characteristic of the fabricated structure. The calculations of the main electrophysical parameters of the heterojunction are carried out and the mechanisms of current transfer were determined. The resulting heterojunctions are promising for the creation of photovoltaic devices, such as solar cells and photodetectors, as they can reduce production costs due to the low cost of materials and cheap method of their production.","PeriodicalId":365896,"journal":{"name":"2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122052604","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
Recognition of Mid-Temperature Overheating in High-Voltage Power Transformers by Dissolved Gas Analysis 用溶解气体分析法识别高压电力变压器中温过热
2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek) Pub Date : 2021-09-13 DOI: 10.1109/KhPIWeek53812.2021.9570059
Shutenko Oleg, Kulyk Oleksii
{"title":"Recognition of Mid-Temperature Overheating in High-Voltage Power Transformers by Dissolved Gas Analysis","authors":"Shutenko Oleg, Kulyk Oleksii","doi":"10.1109/KhPIWeek53812.2021.9570059","DOIUrl":"https://doi.org/10.1109/KhPIWeek53812.2021.9570059","url":null,"abstract":"The results of gas content analysis for 359 highvoltage power transformers with mid-temperature overheating are presented. The values of gas percentage and gas ratios were obtained, and the nomograms of defects corresponding to overheating at temperatures of 300-500°C and 500-700°C were constructed, which allows increasing the recognition reliability of these defects. Based on the analysis of the dynamics of changes in the gas content during the development of the defect, demonstrated by nomograms, it was found that mid-temperature overheating can pose a significant risk for transformers due to the possibility of escalation into more dangerous defects. A comparative analysis of the recognition reliability of mid-temperature overheating, using the best known standards and methods, showed that the most reliable detection is achieved by the gas ratios specified in the IEC standard.","PeriodicalId":365896,"journal":{"name":"2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek)","volume":"147 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116618915","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
Mode Control of Urban Electrical Networks Based on the Smart Grid Concept 基于智能电网概念的城市电网模式控制
2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek) Pub Date : 2021-09-13 DOI: 10.1109/KhPIWeek53812.2021.9570000
P. Hovorov, A. Kindinova, V. Hovorov
{"title":"Mode Control of Urban Electrical Networks Based on the Smart Grid Concept","authors":"P. Hovorov, A. Kindinova, V. Hovorov","doi":"10.1109/KhPIWeek53812.2021.9570000","DOIUrl":"https://doi.org/10.1109/KhPIWeek53812.2021.9570000","url":null,"abstract":"Annotation- The work is devoted to improving the efficiency of urban electrical networks. A high level of technical complexity, a strong ramification, combined with a large number of elements operating in an unpredictable mode, make the control of the modes of such networks a rather difficult task, requiring a large amount of information about the parameters and modes of electrical networks and their elements, as well as the use of a large number of correcting elements. However, the lack of technical and organizational capabilities of networks, combined with the lack of scientific foundations for automated control of the modes of urban electrical networks, in general, significantly complicates the solution of this problem, and taking into account the peculiarities in urban electrical networks, weak correlation of voltage and reactive power graphs, as well as the high level of higher harmonics in networks in current conditions make it practically insoluble. Taking into account the above, the authors have developed the scientific foundations for automated control of the modes of urban electrical networks, based on the use of distributed multi-level control systems, built according to a hierarchical principle, in combination with the use of correcting multifunctional devices in load nodes, built on the basis of phase-switched booster transformers with an electronic control system. Their use opens up the possibility of automatically changing the modulus, phase shift and harmonic composition of voltages and currents in load nodes in accordance with the required law.","PeriodicalId":365896,"journal":{"name":"2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123368926","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
A Hardware Framework for Three-Phase Converter Physical Modeling 三相变流器物理建模的硬件框架
2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek) Pub Date : 2021-09-13 DOI: 10.1109/KhPIWeek53812.2021.9570094
V. Burlaka, S. Gulakov, S. Podnebennaya, Ekaterina Kudinova, O. Plakhtii, V. Nerubatskyi
{"title":"A Hardware Framework for Three-Phase Converter Physical Modeling","authors":"V. Burlaka, S. Gulakov, S. Podnebennaya, Ekaterina Kudinova, O. Plakhtii, V. Nerubatskyi","doi":"10.1109/KhPIWeek53812.2021.9570094","DOIUrl":"https://doi.org/10.1109/KhPIWeek53812.2021.9570094","url":null,"abstract":"A low-cost voltage source inverter (VSI) module for building a laboratory testbed for experimental research works with 3-phase 3-wire networks with line-to-line voltage up to 250 VAC is presented. The module consists of a 3-phase 600 V 10 A IGBT bridge controlled by a 32-bit ARM microcontroller. The module also contains 2 galvanically-isolated UART communication ports; 4 current measurement channels and 5 voltage measurement channels. The module functionality is sufficient to perform experiments with many VSI applications, such as: variable frequency drive (VFD); regulated AC/DC voltage source; 1-phase voltage regulator; active rectifier; 1-phase grid-tie inverter; parallel or series active power filter etc. Furthermore, by combining two modules, it becomes possible to implement electronic load with variable parameters; four-quadrant VFD; unified power quality conditioner etc. The onboard communication ports allow to implement data exchange either between modules and/or between module and PC for data processing and storage. The usage of such VSI modules in educational purposes will allow to implement many laboratory experiments in the fields of electric drive, power converters, electric power quality, etc.","PeriodicalId":365896,"journal":{"name":"2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128960359","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
Computer and Computational Modeling of the Biomechanics of Pole Vaults 撑杆跳生物力学的计算机和计算模型
2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek) Pub Date : 2021-09-13 DOI: 10.1109/KhPIWeek53812.2021.9569980
V. Adashevsky, E. Druzhinin, D. Lavinsky
{"title":"Computer and Computational Modeling of the Biomechanics of Pole Vaults","authors":"V. Adashevsky, E. Druzhinin, D. Lavinsky","doi":"10.1109/KhPIWeek53812.2021.9569980","DOIUrl":"https://doi.org/10.1109/KhPIWeek53812.2021.9569980","url":null,"abstract":"The article is devoted to the study of the biomechanics of one of the technically difficult sports - pole vaulting. The research is based on the methods of computer and computational modeling. For computer modeling, the KiDyM software package is used, which uses the relations of the computer algebra system to construct differential equations of motion of complex mechanical systems. The basic relations for studying the dynamics of mechanical systems by means of the KiDyM software package are given. A computational scheme has been created that allows one to study the biomechanics of motion of an athlete in the repulsion phase and flight with a pole. The analysis of the influence of some parameters of sports action on sports results was carried out.","PeriodicalId":365896,"journal":{"name":"2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129140209","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
[Title page] (标题页)
2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek) Pub Date : 2021-09-13 DOI: 10.1109/khpiweek53812.2021.9570037
{"title":"[Title page]","authors":"","doi":"10.1109/khpiweek53812.2021.9570037","DOIUrl":"https://doi.org/10.1109/khpiweek53812.2021.9570037","url":null,"abstract":"","PeriodicalId":365896,"journal":{"name":"2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124671353","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
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