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2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA)最新文献

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Modelling of Linear Magnetic Gear 线性磁力齿轮的建模
2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA) Pub Date : 2022-06-01 DOI: 10.1109/SIELA54794.2022.9845779
M. Todorova, V. Mateev, I. Marinova
{"title":"Modelling of Linear Magnetic Gear","authors":"M. Todorova, V. Mateev, I. Marinova","doi":"10.1109/SIELA54794.2022.9845779","DOIUrl":"https://doi.org/10.1109/SIELA54794.2022.9845779","url":null,"abstract":"In this paper transient 2D and 3D finite element method models of linear magnetic gear have been developed. Results for magnetic force interaction and force density have been obtained and presented. The transient motion of the plungers of the linear magnetic gear has been investigated. The results from the modelling of the linear magnetic gear are carried out by the Ansys-Maxwell software. Results are showing relatively high force density of the linear magnetic gear design and low magnetic field reluctance at high traveling distance and moving speed.","PeriodicalId":150282,"journal":{"name":"2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131399390","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
Study of Buck Converter under Supply Voltage Variations 电源电压变化下Buck变换器的研究
2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA) Pub Date : 2022-06-01 DOI: 10.1109/SIELA54794.2022.9845772
K. Milanov, M. Slavkova, R. Miltchev
{"title":"Study of Buck Converter under Supply Voltage Variations","authors":"K. Milanov, M. Slavkova, R. Miltchev","doi":"10.1109/SIELA54794.2022.9845772","DOIUrl":"https://doi.org/10.1109/SIELA54794.2022.9845772","url":null,"abstract":"In the presented work, the influence of the supply voltage variations of the electric transport contact networks on the operation of a buck converter in different control algorithms is researched. The studies were performed at constant frequency and pulse width modulation (PWM) and at variable frequency, as well as at constant pulse duration in “ON” state. The results of the study confirm the advantage of control of buck converter with variable frequency at lower supply voltages. The current pulsation for the example is approximately twice as small with variable frequency control.","PeriodicalId":150282,"journal":{"name":"2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA)","volume":"1206 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131442617","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
Crypto Genetic Approach in Information Security 信息安全中的密码遗传方法
2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA) Pub Date : 2022-06-01 DOI: 10.1109/SIELA54794.2022.9845775
Andon Lazarov, P. Petrova
{"title":"Crypto Genetic Approach in Information Security","authors":"Andon Lazarov, P. Petrova","doi":"10.1109/SIELA54794.2022.9845775","DOIUrl":"https://doi.org/10.1109/SIELA54794.2022.9845775","url":null,"abstract":"The present work focuses on a combined crypto genetic algorithm to ensure high level of confidential information security. At the data transmission stage of the information system, the algorithm starts with generating two arbitrary non-coprime numbers, determining a least common multiple and a great common divisor, and producing private and public keys. First, the information is encrypted with a public key to obtain the initial cipher. The initial cipher is additionally manipulated by applying operators of the genetic algorithm. Final cipher is produced. At the receiver, the final cipher first is manipulated by operators of the genetic algorithm. The initial cipher is to restored. Then, a private key is applied to obtain the transmitted information. The main contribution of the present study is the introduction of random generated two non-coprime numbers in the determination of the public and private key at the beginning of the algorithm, which enriches the asymmetric crypto technique and expanses substantially the application area of asymmetric RSA crypto codes.","PeriodicalId":150282,"journal":{"name":"2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122349994","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
Capacitance of Narrow Strip in Tall Rectangular Cross-section Envelope 高矩形截面包络中窄带的电容
2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA) Pub Date : 2022-06-01 DOI: 10.1109/SIELA54794.2022.9845739
G. Cividjian
{"title":"Capacitance of Narrow Strip in Tall Rectangular Cross-section Envelope","authors":"G. Cividjian","doi":"10.1109/SIELA54794.2022.9845739","DOIUrl":"https://doi.org/10.1109/SIELA54794.2022.9845739","url":null,"abstract":"The 2D capacitance of a thin (zero thickness) strip in the center of rectangular cross section grounded envelope can be evaluated using the formulas for 2D “corner” geometric capacitances or permeances. If the width of the strip is larger than the height of the envelope the known corner capacitance for infinitely wide strip can be used. Because the exact solution for narrow strip contains difficult to evaluate series simpler approximate formulas were proposed for particular cases and interpolation is suggested for intermediate value of the parameters. In the paper, using conformal mapping and numerical conformal mapping, a new more exact approximate formula is proposed which significantly enlarge the application domain, up to infinitely tall envelope.","PeriodicalId":150282,"journal":{"name":"2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116286368","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
Modelling of an Electronic Technological System for Induction Melting of Metals 金属感应熔炼电子技术系统的建模
2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA) Pub Date : 2022-06-01 DOI: 10.1109/SIELA54794.2022.9845744
N. Hinov, T. Hranov, B. Gilev
{"title":"Modelling of an Electronic Technological System for Induction Melting of Metals","authors":"N. Hinov, T. Hranov, B. Gilev","doi":"10.1109/SIELA54794.2022.9845744","DOIUrl":"https://doi.org/10.1109/SIELA54794.2022.9845744","url":null,"abstract":"The manuscript presents a study of an electronic technological system for induction melting of metals consisting of a transistor bridge parallel current inverter, powered by an uncontrolled rectifier and a step-down DC-DC converter. To stabilize the operating mode, two regulators are used - the inverter with frequency control and maintenance of the input current by changing the duty cycle of the DC-DC converter of hysteresis when changing the control frequency of the inverter. The model is based on the use of a switching function, and studies have been conducted simulating the changes in the load during a real technological process. The presented results are also useful from the point of view of the synthesis of optimal control and adjustment of the controller coefficients.","PeriodicalId":150282,"journal":{"name":"2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127077772","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
Digital Implementation of P-Q Control in Grid-Tied Inverters for Educational Purposes 并网逆变器中P-Q控制的数字化实现
2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA) Pub Date : 2022-06-01 DOI: 10.1109/SIELA54794.2022.9845728
Konstantina Dimitriadou, A. Boubaris, Nick Rigogiannis, N. Papanikolaou
{"title":"Digital Implementation of P-Q Control in Grid-Tied Inverters for Educational Purposes","authors":"Konstantina Dimitriadou, A. Boubaris, Nick Rigogiannis, N. Papanikolaou","doi":"10.1109/SIELA54794.2022.9845728","DOIUrl":"https://doi.org/10.1109/SIELA54794.2022.9845728","url":null,"abstract":"This paper presents the development of an educational tool, aiming at the in-depth study of P-Q control concept in grid-tied inverters. The proposed tool is based on the development of the digital control model in MATLAB® Simulink and its conversion into executable code for the TMS320F28379D microcontroller unit. Hence, students are encouraged to enhance their programming and digital control skills, along with the in-depth analysis and comprehension of power electronics systems. Finally, the overall educational tool is experimentally validated through an H-bridge grid-tied inverter.","PeriodicalId":150282,"journal":{"name":"2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129161445","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
Intelligent Design and Control System of Automated Installations for Induction Heating of Products 产品感应加热自动化装置的智能设计与控制系统
2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA) Pub Date : 2022-06-01 DOI: 10.1109/SIELA54794.2022.9845780
Y. Perevalov, V. Demidovich
{"title":"Intelligent Design and Control System of Automated Installations for Induction Heating of Products","authors":"Y. Perevalov, V. Demidovich","doi":"10.1109/SIELA54794.2022.9845780","DOIUrl":"https://doi.org/10.1109/SIELA54794.2022.9845780","url":null,"abstract":"The paper discusses the problems of digitalization of technologies for precision induction heating of billets made of non-ferrous metal alloys, such as titanium, zirconium, niobium, tantalum and some others. Induction heating has some features that need to be taken into account when developing such equipment and technology. At the first stage of the development of an induction installation for continuous heating of non-ferrous metal workpieces, it is necessary to develop a highly adequate digital double that will take into account low thermal conductivity and high temperature losses from the surface. These processes lead to the fact that the highest temperature is reached inside the workpiece, which cannot be measured using pyrometers. But at the same time, precision heating with a high degree of uniformity of the temperature field is essential for the heat treatment of non-magnetic metal alloys before plastic deformation.","PeriodicalId":150282,"journal":{"name":"2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA)","volume":"408 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134289457","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
Magnetoelectric Energy Harvesting Device 磁电能量收集装置
2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA) Pub Date : 2022-06-01 DOI: 10.1109/SIELA54794.2022.9845758
E. Kuzmin, V. Leontiev, Yu. V. Kiliba, R. Petrov, P. Bozhkov, D. Usik, S. Bozhkov, I. Milenov
{"title":"Magnetoelectric Energy Harvesting Device","authors":"E. Kuzmin, V. Leontiev, Yu. V. Kiliba, R. Petrov, P. Bozhkov, D. Usik, S. Bozhkov, I. Milenov","doi":"10.1109/SIELA54794.2022.9845758","DOIUrl":"https://doi.org/10.1109/SIELA54794.2022.9845758","url":null,"abstract":"The paper is devoted to the study of the magnetoelectric energy harvesting device consisting of two parts: magnetoelectric element and conversion unit. Magnetoelectric structure of Metglas/GaAs/Metglas is most effective convert of magnetic energy at frequencies from 40 to 150 kHz, where output voltage equal of 3 V and current of 2 rnA at the output from the conversion unit. The output voltage was 5 V at frequencies from 95 to 105 kHz. A prospective direction for further development of the energy harvesting is the use of magnetoelectric gradient structures.","PeriodicalId":150282,"journal":{"name":"2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129205188","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
Analysis of the Possibilities for Realization of the PTG Technology in RES 在RES中实现PTG技术的可能性分析
2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA) Pub Date : 2022-06-01 DOI: 10.1109/SIELA54794.2022.9845724
Ivelina Hinova
{"title":"Analysis of the Possibilities for Realization of the PTG Technology in RES","authors":"Ivelina Hinova","doi":"10.1109/SIELA54794.2022.9845724","DOIUrl":"https://doi.org/10.1109/SIELA54794.2022.9845724","url":null,"abstract":"This article presents an analysis of the possibilities for the implementation of technologies for the transfer of energy to gas, describing the various challenges: technical, economic and environmental. Power-to-Gas is a long-term storage technology that uses existing gas infrastructure. In the absence of energy for cogeneration and / or heating and lighting, Power - to - Gas technology can be used to convert electricity into hydrogen or methane. With a high share of volatile renewable energy sources, there is a need for energy storage to balance supply and demand at different times for different regions and localities.","PeriodicalId":150282,"journal":{"name":"2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128861819","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
Modeling the Influences of Cells Characteristics in Battery Bank 电池组中电池特性影响的建模
2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA) Pub Date : 2022-06-01 DOI: 10.1109/SIELA54794.2022.9845770
Krassimir Kishkin, H. Kanchev, Dimitar D. Arnaudov
{"title":"Modeling the Influences of Cells Characteristics in Battery Bank","authors":"Krassimir Kishkin, H. Kanchev, Dimitar D. Arnaudov","doi":"10.1109/SIELA54794.2022.9845770","DOIUrl":"https://doi.org/10.1109/SIELA54794.2022.9845770","url":null,"abstract":"this paper presents a modeling tool based on Matlab/Simulink, which is used for determining the State of Charge of Li-ion battery packs composed of cells with different characteristics, due to aging or different nominal capacity of the cells. The purpose of this model is to simulate the output voltage in a series-connected battery bank. This model uses reference data base with multiple discharge curves, obtained at different C - rates. That makes the model applicable for much complex battery pack models, made out of many cells and branches. The presented model allows the state of charge of a battery to be obtained for different magnitudes of the current, on the base of interpolations. It is also considered the change in the usable capacity of the battery by discharging it with different currents, proportional to the C-rate of the battery. The model is validated by experimental results.","PeriodicalId":150282,"journal":{"name":"2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128061682","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
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