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2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE)最新文献

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DC to DC Converter for Residential Applications 住宅用直流到直流变换器
2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE) Pub Date : 2020-11-05 DOI: 10.1109/ISFEE51261.2020.9756163
B. Armaselu, Madalin Frunzete, A. Florescu
{"title":"DC to DC Converter for Residential Applications","authors":"B. Armaselu, Madalin Frunzete, A. Florescu","doi":"10.1109/ISFEE51261.2020.9756163","DOIUrl":"https://doi.org/10.1109/ISFEE51261.2020.9756163","url":null,"abstract":"Whether we are talking about the automotive industry or any other field that is based on electronics, in the process of streamlining devices there is a switching-mode power supply. This can be for AC-DC, DC-DC or even DC to AC, in which case several cascading stages take place. As efficiency becomes more and more important, in order to obtain greater mobility (greater autonomy in telephones, laptops or electric cars) there is a growing interest in achieving the most efficient switching-mode power supply. As home grid systems become more popular, solutions are sought to reduce costs and the performance of voltage converters are improved.","PeriodicalId":145923,"journal":{"name":"2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129239458","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 Tunable 3rd – OrderLow–PassFilter for ECG Acquisition Using Capacitance Multiplier 一种利用电容乘法器进行心电采集的可调三阶低通滤波器
2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE) Pub Date : 2020-11-05 DOI: 10.1109/ISFEE51261.2020.9756149
Viorel-Stefan Savinescu, Ioan-Alexandru Nica, L. Goras
{"title":"A Tunable 3rd – OrderLow–PassFilter for ECG Acquisition Using Capacitance Multiplier","authors":"Viorel-Stefan Savinescu, Ioan-Alexandru Nica, L. Goras","doi":"10.1109/ISFEE51261.2020.9756149","DOIUrl":"https://doi.org/10.1109/ISFEE51261.2020.9756149","url":null,"abstract":"This paper presents a pseudodifferential third-order low-pass filter suitable for electrocardiography (ECG) acquisition. The implementation is based on a three real poles topology, where unity gain buffers were used for decoupling. Since from the application perspective (low-pass bandwidth), very large time constants are needed for an on-chip solution, the time constants are obtained by using the output resistance of unity gain buffer, where the transistors are biased in weak inversion and loaded by a capacitance multiplier. Based on the possibility of electronic tunability of a capacitance multiplier, a variable corner frequency over two decades (up to kHz) is obtained. The filter prototype was implemented using 180-nm AMS technology. It is shown that for the nominal case, a cut-off frequency of 250 Hz was obtained using a power consumption of 89 nA from a power supply of 1.8 V, for a pseudodifferential solution, and a figure of merit of 0.6 x 10-15 J. Over global variation, for a 50 Hz input frequency and 0.2 Vp-p amplitude, the filter achieves a total harmonic distortions (THD) bellow -58dB.","PeriodicalId":145923,"journal":{"name":"2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127243664","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
Multi-Objective QPSO Algorithms to Solve an Electromagnetic Benchmark Problem 求解电磁基准问题的多目标QPSO算法
2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE) Pub Date : 2020-11-05 DOI: 10.1109/ISFEE51261.2020.9756185
Cristina Mamoc, A. Duca, G. Ciuprina, A. Lup
{"title":"Multi-Objective QPSO Algorithms to Solve an Electromagnetic Benchmark Problem","authors":"Cristina Mamoc, A. Duca, G. Ciuprina, A. Lup","doi":"10.1109/ISFEE51261.2020.9756185","DOIUrl":"https://doi.org/10.1109/ISFEE51261.2020.9756185","url":null,"abstract":"The paper proposes a new set of Quantum-behaved Particle Swarm Optimization (QPSO) multi-objective algorithms with the final goal to use them for the optimization of a two objective electromagnetic benchmark inspired by a real world application. Starting from some various flavors of single-objective QPSO algorithms, known as: classic, with Gaussian attractor and with random mean, the new multi-objective QPSO implementations integrate principles inspired from notorious algorithms such as NSGA II, OMOPSO and ε-MOEA. The proposed algorithms are tested on benchmark problems proposed by scientific communities working in Evolutionary Computation and Computational Electromagnetics.","PeriodicalId":145923,"journal":{"name":"2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125787481","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 Influence of the Generator Signal Parameters Over the AntiBubbles Formation 发生器信号参数对防气泡形成的影响
2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE) Pub Date : 2020-11-05 DOI: 10.1109/ISFEE51261.2020.9756158
F. Adochiei, G. Seritan, B. Enache, F. Argatu, Andreea Roxanda Dobre
{"title":"The Influence of the Generator Signal Parameters Over the AntiBubbles Formation","authors":"F. Adochiei, G. Seritan, B. Enache, F. Argatu, Andreea Roxanda Dobre","doi":"10.1109/ISFEE51261.2020.9756158","DOIUrl":"https://doi.org/10.1109/ISFEE51261.2020.9756158","url":null,"abstract":"AntiBubbles are gas particles that contain a liquid droplet core. They have a wide range of applications, but in this study, we are only focused on using them as contrast agents. There are several methods to produce AntiBubbles, but one of the most common involve the use of ultrasounds. Following this trend, we investigated the influence of the excitation signal parameters to obtain a better visualization.","PeriodicalId":145923,"journal":{"name":"2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114700430","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
An Approach for Designing Boolean Functions with Decoders 带解码器的布尔函数设计方法
2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE) Pub Date : 2020-11-05 DOI: 10.1109/ISFEE51261.2020.9756186
A. Borodzhieva
{"title":"An Approach for Designing Boolean Functions with Decoders","authors":"A. Borodzhieva","doi":"10.1109/ISFEE51261.2020.9756186","DOIUrl":"https://doi.org/10.1109/ISFEE51261.2020.9756186","url":null,"abstract":"The paper presents an approach for designing different Boolean functions with a cascade of decoders and additional logic gates based on their schematic view and their testing on the laboratory module built with Spartan-6 FPGA units. The module, developed at the University of Ruse, is planned for using in the courses \"Digital Electronics\" and \"Pulse and Digital Devices\", familiarizing the bachelors of the electro-specialties to the basic problems of digital electronics.","PeriodicalId":145923,"journal":{"name":"2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"2012 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130676833","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
Internet of Things Applications in Water Pumping Stations and Distribution Networks 物联网在泵站和配水网络中的应用
2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE) Pub Date : 2020-11-05 DOI: 10.1109/ISFEE51261.2020.9756161
A. Chirilă, I. Deaconu, V. Năvrăpescu, C. Ghita, G. Smeu
{"title":"Internet of Things Applications in Water Pumping Stations and Distribution Networks","authors":"A. Chirilă, I. Deaconu, V. Năvrăpescu, C. Ghita, G. Smeu","doi":"10.1109/ISFEE51261.2020.9756161","DOIUrl":"https://doi.org/10.1109/ISFEE51261.2020.9756161","url":null,"abstract":"This paper illustrates the vast applications of IoT technology withing the drinking water pumping and distribution network. For a much better management of one of the most important global resource, a proper monitoring protocol needs to be implemented, and adapted to facilitate this option High speed data acquisition and transfer is key to better understand what the true situation is underground, within the water distribution network. Starting from the quality and quantity sensors, up to the datalogging and information transfer equipment, this paper shows the flux of information from data to decision.","PeriodicalId":145923,"journal":{"name":"2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126310803","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
Development of a Two-Phase PEM Fuel Cell Model for the Electrical Performance Prediction of PEMFC Systems with Nation 117 Membrane Nation 117膜PEMFC系统电性能预测的两相PEM燃料电池模型的建立
2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE) Pub Date : 2020-11-05 DOI: 10.1109/ISFEE51261.2020.9756164
V. Ionescu
{"title":"Development of a Two-Phase PEM Fuel Cell Model for the Electrical Performance Prediction of PEMFC Systems with Nation 117 Membrane","authors":"V. Ionescu","doi":"10.1109/ISFEE51261.2020.9756164","DOIUrl":"https://doi.org/10.1109/ISFEE51261.2020.9756164","url":null,"abstract":"It was implemented in this study a steady-state, non- isothermal, two-phase model for Nafion-based PEMFC systems using the Finite Element Method (FEM) based Comsol Multiphysics software. Inside this numerical model were considered different parametrization laws for ionic conductivity, water diffusivity in ionomer, electro-osmotic drag coefficient and equilibrium water uptake, established based on the experimental data reported in the literature by various researchers for the widely available Nafion 117 membrane. The overall impact of this uncertainty in Nafion material parametrization on the fuel cell model performance was evaluated here. It was reported the variation of electrolyte potential and ionomer water content in correlation with electrolyte current density and water ionomer flux, along with temperature and heat flux gradients. Simulated polarization plots were compared with the experimental polarization curve registered with Nafion 117 MEA based BEKKTECH BT-552 system under testing at some specific operation settings.","PeriodicalId":145923,"journal":{"name":"2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134094365","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
Robust Electricity Consumption Forecast Based on Load Curves Analysis 基于负荷曲线分析的稳健电力消费预测
2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE) Pub Date : 2020-11-05 DOI: 10.1109/ISFEE51261.2020.9756157
Mădălina Arhip-Călin, Cristian-Cornel Andrei, Gabriel Tudor, Alexandru Zamfirescu, Grațian Fierăscu, G. Seritan
{"title":"Robust Electricity Consumption Forecast Based on Load Curves Analysis","authors":"Mădălina Arhip-Călin, Cristian-Cornel Andrei, Gabriel Tudor, Alexandru Zamfirescu, Grațian Fierăscu, G. Seritan","doi":"10.1109/ISFEE51261.2020.9756157","DOIUrl":"https://doi.org/10.1109/ISFEE51261.2020.9756157","url":null,"abstract":"The transition towards smart grid encompasses a greater attention paid to the energy efficiency. This aspect is of a great importance when we discuss the utilities’ impact on the overall electric energy consumption bill. In this paper we analyzed the importance of knowing the electricity consumption profile of users, as a paramount importance in the advent of local energy market for microgrids. The research effort was divided into two directions. The first was to identify electricity consumption over a one-week period of the Power Engineering Faculty building, and the second direction was to analyze the values obtained from the measurements. The analysis involved plotting the graphs that show the shape of the load curves at hourly intervals, thus allowing for predictions, and identification of consumption peculiarities, for enhanced forecasts.","PeriodicalId":145923,"journal":{"name":"2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130429975","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
Numerical Analysis of a Brushless Servomotor with Soft Magnetic Composite Stator Core 软磁复合定子铁心无刷伺服电机的数值分析
2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE) Pub Date : 2020-11-05 DOI: 10.1109/ISFEE51261.2020.9756136
Veronica Manescu (Paltanea), G. Păltânea, B. Vărăticeanu, P. Minciunescu, M. Maricaru, L. Demeter, Maricica Pesteri, H. Gavrilă, I. Nemoianu
{"title":"Numerical Analysis of a Brushless Servomotor with Soft Magnetic Composite Stator Core","authors":"Veronica Manescu (Paltanea), G. Păltânea, B. Vărăticeanu, P. Minciunescu, M. Maricaru, L. Demeter, Maricica Pesteri, H. Gavrilă, I. Nemoianu","doi":"10.1109/ISFEE51261.2020.9756136","DOIUrl":"https://doi.org/10.1109/ISFEE51261.2020.9756136","url":null,"abstract":"In the paper is presented the design of a brushless servomotor, which has its stator made of soft magnetic composite Somaloy 700-3P 600 MPa. This motor will have an industrial purpose in special applications. The finite element method is suitable for a first analyze in the manufacture process and in this step adequate materials are chosen. The cogging torque has low values, fact that proves that motor is a robust one and it has a low-cost integration.","PeriodicalId":145923,"journal":{"name":"2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132139881","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
Generation of State Equations for Circuits with Excess Elements 含多余单元电路状态方程的生成
2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE) Pub Date : 2020-11-05 DOI: 10.1109/ISFEE51261.2020.9756144
M. Marin, Ciprian-Stefan Staicu, A. Gheorghe, F. Constantinescu
{"title":"Generation of State Equations for Circuits with Excess Elements","authors":"M. Marin, Ciprian-Stefan Staicu, A. Gheorghe, F. Constantinescu","doi":"10.1109/ISFEE51261.2020.9756144","DOIUrl":"https://doi.org/10.1109/ISFEE51261.2020.9756144","url":null,"abstract":"In this paper is presented a procedure able to obtain the state equations in normal form for electrical circuits, for both cases of circuits with and without excess elements. The method starts from the symbolic hybrid representation of the circuit, previously developed by the authors for circuits without excess elements. The symbolic state matrix is very useful for example during LR iterations which compute the approximate expressions of poles and zeros. To illustrate this approach, three examples of circuits with excess elements are given, one containing an inductor cut-set, one containing a capacitor loop, and one containing both an inductor cut-set and a capacitor loop.","PeriodicalId":145923,"journal":{"name":"2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132794776","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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