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

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Microcontroller Based STFT-Vibration Analyzer 基于单片机的stft振动分析仪
2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE) Pub Date : 2020-11-05 DOI: 10.1109/ISFEE51261.2020.9756178
I. Mituletu, C. Muscai, Gilbert-Rainer Gillich, Liviu-Bogdan Protea
{"title":"Microcontroller Based STFT-Vibration Analyzer","authors":"I. Mituletu, C. Muscai, Gilbert-Rainer Gillich, Liviu-Bogdan Protea","doi":"10.1109/ISFEE51261.2020.9756178","DOIUrl":"https://doi.org/10.1109/ISFEE51261.2020.9756178","url":null,"abstract":"The microcontroller based STFT-vibration analyzer (STFT-VA) performs iteratively the short-time Fourier transform (STFT) on a windowed non-stationary signal, resulting in a more accurately spectrum achievement. Actually, the signal is windowed in relation to the lowest frequency value of a range, and the STFT is applied on the signal segments obtained by iteratively decreasing a number of samples from that window. Resulted spectrum is accomplished by identifying the biggest amplitude of each frequency bin. The period of frequency scanning is inversely related to the lowest frequency value and the spectrum refresh rate as well. High-resolution ADC and high-frequency processing microcontroller's features help to achieve an almost continuous spectrum. The device can be useful in many vibration based implementations, and its most significant advantages are the easy operation, small dimension and low-cost.","PeriodicalId":145923,"journal":{"name":"2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"4 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":"122578586","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 on the Acquisition, Analysis, and Statistical Processing of Data in a Transformation Substation 变电站数据采集、分析与统计处理研究
2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE) Pub Date : 2020-11-05 DOI: 10.1109/ISFEE51261.2020.9756150
Valentina Rohat, I. Băran, R. Porumb, Silvia–Carmen Vasile
{"title":"Study on the Acquisition, Analysis, and Statistical Processing of Data in a Transformation Substation","authors":"Valentina Rohat, I. Băran, R. Porumb, Silvia–Carmen Vasile","doi":"10.1109/ISFEE51261.2020.9756150","DOIUrl":"https://doi.org/10.1109/ISFEE51261.2020.9756150","url":null,"abstract":"This paper was based on data obtained from a 20/0.4 kV substation, from a working day, purchased using a class A power quality analyzer. From the set of data obtained, from the analyzer reports, the study of case was limited to data acquisition, data analysis and statistical processing of data on currents and voltages.","PeriodicalId":145923,"journal":{"name":"2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"49 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":"114589408","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
Finite Element Analysis of Inverter-Fed Inverse Construction Synchronous Motors 逆变馈式逆结构同步电动机的有限元分析
2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE) Pub Date : 2020-11-05 DOI: 10.1109/ISFEE51261.2020.9756160
T. Tudorache, V. Manoliu
{"title":"Finite Element Analysis of Inverter-Fed Inverse Construction Synchronous Motors","authors":"T. Tudorache, V. Manoliu","doi":"10.1109/ISFEE51261.2020.9756160","DOIUrl":"https://doi.org/10.1109/ISFEE51261.2020.9756160","url":null,"abstract":"This paper deals with the performance assessment of a Current Source Inverter (CSI)-fed synchronous motor drive system using 2D Finite Element (FE) electromagnetic field calculations. The numerical analysis is carried out using FLUX 2D ® software package and the physical support for the proposed investigations is represented by an inverse construction salient pole wound rotor synchronous motor with a rated power of 3.2 kW. Parts of the numerical results are validated by experimental measurements.","PeriodicalId":145923,"journal":{"name":"2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"2011 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":"127364959","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
Robotics Laboratory - Developing a Robotic Hand Prosthesis 机器人实验室-开发机械手假体
2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE) Pub Date : 2020-11-05 DOI: 10.1109/ISFEE51261.2020.9756143
S. Paturca, Miruna Petraru, V. Bostan, C. Banica, V. Pleşca
{"title":"Robotics Laboratory - Developing a Robotic Hand Prosthesis","authors":"S. Paturca, Miruna Petraru, V. Bostan, C. Banica, V. Pleşca","doi":"10.1109/ISFEE51261.2020.9756143","DOIUrl":"https://doi.org/10.1109/ISFEE51261.2020.9756143","url":null,"abstract":"This paper presents a Robotics Laboratory conceived for Bioengineering students. The laboratory work is structured in two stages - in the first one, students use simulators and the ready-to-use platforms and in the second stage, which is structured as a project, they are involved in carrying out their own platforms. The solutions chosen for the development of these platforms must be inexpensive and must makes students to experience the basic stages of a hands-on bioengineering project. The project include simulation, hardware development, software design and implementation. For the project stage, the steps for making an affordable prosthetic hand with a high flexibility and functionality will be presented. The paper describes the project phases, the students activities and some relevant results of the survey regarding the students' opinion about this laboratory.","PeriodicalId":145923,"journal":{"name":"2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"46 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":"128047714","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
Probabilistic Load Flow in Renewable - Dominated Distribution Electric Networks 以可再生能源为主的配电网的概率潮流
2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE) Pub Date : 2020-11-05 DOI: 10.1109/ISFEE51261.2020.9756134
Constantin Ghinea, L. Toma, Dorian O. Sidea, M. Eremia
{"title":"Probabilistic Load Flow in Renewable - Dominated Distribution Electric Networks","authors":"Constantin Ghinea, L. Toma, Dorian O. Sidea, M. Eremia","doi":"10.1109/ISFEE51261.2020.9756134","DOIUrl":"https://doi.org/10.1109/ISFEE51261.2020.9756134","url":null,"abstract":"Renewable energy sources (RES), especially wind and photovoltaic energy are the most used in distribution systems. In order to evaluate the impact of uncertainty of renewable energy sources and loads, an analysis of a distribution electric network using probabilistic load flow (PLF) is presented. The probabilistic approach considers that the loads demands and the injection of distributed generators are represented in terms of probability density functions (PDFs). Monte Carlo method is applied for generating artificial values of a probabilistic variable by using a random number generator and a distribution function. Based on the calculation results, various probabilistic characteristics for bus voltage profile, lines loading and active power losses, where RES are connected, are presented. By comparing the results PLF with deterministic load flow, a great accuracy is confirmed which allows for a better efficiency in investigating the state quantities of distribution electric network under study.","PeriodicalId":145923,"journal":{"name":"2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"27 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":"115126953","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
Time Frame Reduction for Maximum Power Point Operation of Wind Turbines 风电机组最大功率点运行时间框架缩减
2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE) Pub Date : 2020-11-05 DOI: 10.1109/ISFEE51261.2020.9756171
C. Chioncel, E. Spunei, Anamaria-Cătălina Nițu, N. Gillich, G. Tirian
{"title":"Time Frame Reduction for Maximum Power Point Operation of Wind Turbines","authors":"C. Chioncel, E. Spunei, Anamaria-Cătălina Nițu, N. Gillich, G. Tirian","doi":"10.1109/ISFEE51261.2020.9756171","DOIUrl":"https://doi.org/10.1109/ISFEE51261.2020.9756171","url":null,"abstract":"The paper proposes to identify the necessary steps, reflected then in a method, through which the necessary time required to bring the wind turbine to operate in the maximum power point is minimized. For this, in time, several recordings are done, and sizes computed: wind velocity, electric generator power, mechanical angular speed considering, optimum mechanical angular speed–based on the dependence between mechanical angular speed and wind speed. The minimization of the time interval necessary to bring the rpm of the electric generator to the optimal value, is based on the involvement of the maximum value for the electric generator current.","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":"130192816","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
Active Learning Methods Using Computer-Based Tools Applied in the Course "Coding in Telecommunication Systems" 基于计算机的主动学习方法在“电信系统编码”课程中的应用
2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE) Pub Date : 2020-11-05 DOI: 10.1109/ISFEE51261.2020.9756148
A. Borodzhieva
{"title":"Active Learning Methods Using Computer-Based Tools Applied in the Course \"Coding in Telecommunication Systems\"","authors":"A. Borodzhieva","doi":"10.1109/ISFEE51261.2020.9756148","DOIUrl":"https://doi.org/10.1109/ISFEE51261.2020.9756148","url":null,"abstract":"The paper describes different computer-based tools for presenting the topic of decoders of linear block codes, full of \"tedious\" mathematics to the students, making the classes more interesting and more attractive with the help of active learning. The applications described in the paper are applied in the educational process in the course \"Coding in Telecommunication Systems\" for students-bachelors of the specialty \"Internet and Mobile Communication\" at the University of Ruse.","PeriodicalId":145923,"journal":{"name":"2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"37 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":"131795140","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
Educational Platform for Simulating the Operation of an Automatic Car Wash Machine 模拟自动洗车机操作教学平台
2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE) Pub Date : 2020-11-05 DOI: 10.1109/ISFEE51261.2020.9756172
C. Sărăcin, Andrei Ioniţă
{"title":"Educational Platform for Simulating the Operation of an Automatic Car Wash Machine","authors":"C. Sărăcin, Andrei Ioniţă","doi":"10.1109/ISFEE51261.2020.9756172","DOIUrl":"https://doi.org/10.1109/ISFEE51261.2020.9756172","url":null,"abstract":"This paper presents the practical implementation of an educational platform that intends to present the physical scale model construction and operation of an automatic car wash machine. The study of this educational platform aims to familiarize the students with modern automation equipment such as smart relays and programmable logic controllers (PLCs). The first part of the paper, it is described the automation equipment used and the construction of the educational platform in terms of hardware and software. In the second part is described its effective operation and its possibilities. The paper closely follows both the physical implementation of the educational platform and the full understanding of the operation of intelligent relays or PLCs and their programming in an automated industrial process.","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":"128911100","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
Low-power Photovoltaic Installation Behavior Analysis 小功率光伏安装行为分析
2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE) Pub Date : 2020-11-05 DOI: 10.1109/ISFEE51261.2020.9756192
E. Spunei, I. Piroi, Ştefan-Gheorghe Mătăsaru, Florina Piroi
{"title":"Low-power Photovoltaic Installation Behavior Analysis","authors":"E. Spunei, I. Piroi, Ştefan-Gheorghe Mătăsaru, Florina Piroi","doi":"10.1109/ISFEE51261.2020.9756192","DOIUrl":"https://doi.org/10.1109/ISFEE51261.2020.9756192","url":null,"abstract":"There is an increasing trend in employing re-usable energy sources, both by industrial and private household consumers. In this work, we present measurements performed on a 40 kW photovoltaic installation mounted on a manufacturing hall. Our measurements indicate the level to which the photovoltaic installation covers the necessary electric power requirements as well as the quality specifications for the provided electrical energy. By raising the P-Q diagram we can analyze the domain where the operating point of the installation may be found. Furthermore, we give indications on how to ensure the power autonomy on the consumer’s side, by the use of accumulators that store electric power during low-sun periods.","PeriodicalId":145923,"journal":{"name":"2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"16 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":"130811480","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
Optimizations of Induction Motors Finite Element Assisted Design Through the Global Response Surface Method 基于全局响应面法的感应电机有限元辅助设计优化
2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE) Pub Date : 2020-11-05 DOI: 10.1109/ISFEE51261.2020.9756140
V. Fireteanu, A. Constantin
{"title":"Optimizations of Induction Motors Finite Element Assisted Design Through the Global Response Surface Method","authors":"V. Fireteanu, A. Constantin","doi":"10.1109/ISFEE51261.2020.9756140","DOIUrl":"https://doi.org/10.1109/ISFEE51261.2020.9756140","url":null,"abstract":"The paper relates to the improvement of the performances of a double squirrel-cage induction motor reference design. Optimums of the objective functions efficiency, power factor, starting breakdown torques, starting and rated currents are determined through mono - and multi-objective optimizations with the Global Response Surface Method (GRSM) algorithm. Design variables defining the cross-section of the stator and rotor slots and the motor axial section, which satisfies search ranges and constrains based on the design experience, are considered. The analysis of optimums and of the values of the correspondent design variables helps the decision for the best motor design.","PeriodicalId":145923,"journal":{"name":"2020 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"35 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":"116807442","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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