2017 International Conference on Electromechanical and Power Systems (SIELMEN)最新文献_第5页

Methodologies regarding the application of optimum criteria to the vertical earth grounding design, with rectangular outline 矩形轮廓垂直接地设计中最佳准则的应用方法

2017 International Conference on Electromechanical and Power Systems (SIELMEN) Pub Date : 2017-10-01 DOI: 10.1109/SIELMEN.2017.8123361

V. Maier, S. Pavel, I. Birou, Horia G. Beleiu, Claudiu Ciorca

{"title":"Methodologies regarding the application of optimum criteria to the vertical earth grounding design, with rectangular outline","authors":"V. Maier, S. Pavel, I. Birou, Horia G. Beleiu, Claudiu Ciorca","doi":"10.1109/SIELMEN.2017.8123361","DOIUrl":"https://doi.org/10.1109/SIELMEN.2017.8123361","url":null,"abstract":"The earth grounding (EGR) computation model contained in normative acts has multiple nonlinearities and functions with implicit definitions. In addition, through the values indicated for the utilization coefficients, the designers are oriented towards relatively large distances between electrodes and no optimal criteria are defined. In earlier works, the authors have realized nomograms in order to calculate the earth resistances for both simple and multiple EGR with more electrodes and have proposed a number of five overall characteristic sizes for the EGR that may constitute optimal criteria. Continuing the development of the dimensioning methods with the application of optimal criteria, the algorithms for the application of two of the optimal criteria, namely the EGR footprint area and the EGR total volume, are formulated and exemplified in the paper. The minimum of the ground footprint area is obtained for the biggest lengths of the electrodes and the minimum distances between them, that are practicable in the given soil and with the technology available to the potential manufacturer. Similarly, the criterion of minimum total volume of the EGR leads also to the minimum distances between electrodes, but to their smaller lengths, within the range of considered lengths.","PeriodicalId":403279,"journal":{"name":"2017 International Conference on Electromechanical and Power Systems (SIELMEN)","volume":"13 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128855853","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: 3

Shielding effectiveness evaluation using a non-standardized method 使用非标准化方法评估屏蔽效能

2017 International Conference on Electromechanical and Power Systems (SIELMEN) Pub Date : 2017-10-01 DOI: 10.1109/SIELMEN.2017.8123300

V. Voicu, I. Pătru, Livia-Andreea Dina, P. Nicolae, Ionuţ-Daniel Smărăndescu

引用次数: 4

Considerations on radiated emission measurements for a Laptop in a semi-anechoic chamber 半消声室中笔记本电脑辐射发射测量的考虑

2017 International Conference on Electromechanical and Power Systems (SIELMEN) Pub Date : 2017-10-01 DOI: 10.1109/SIELMEN.2017.8123299

Livia-Andreea Dina, P. Nicolae, Ionuţ-Daniel Smărăndescu, V. Voicu

引用次数: 1

Computer assisted diagnosis of automatic signalling installations with blinking red lights 闪烁红灯的自动信号装置的计算机辅助诊断

2017 International Conference on Electromechanical and Power Systems (SIELMEN) Pub Date : 2017-10-01 DOI: 10.1109/SIELMEN.2017.8123397

Spunei Elisabeta, Piroi Ion, Muscai Cristian, Piroi Florina

引用次数: 0

A hybrid system implementation for residential cluster 住宅集群的混合系统实现

2017 International Conference on Electromechanical and Power Systems (SIELMEN) Pub Date : 2017-10-01 DOI: 10.1109/SIELMEN.2017.8123332

C. Sima, G. Lazaroiu, V. Dumbrava, M. Tirsu

引用次数: 5

Analysis concerning replication of PV projects in the Republic of Moldova 摩尔多瓦共和国光伏项目复制情况分析

2017 International Conference on Electromechanical and Power Systems (SIELMEN) Pub Date : 2017-10-01 DOI: 10.1109/SIELMEN.2017.8123344

M. Lupu, M. Tirsu

引用次数: 0

Increasing power quality in a 6-pulse DC-traction substation 提高6脉冲直流牵引变电站的电能质量

2017 International Conference on Electromechanical and Power Systems (SIELMEN) Pub Date : 2017-10-01 DOI: 10.1109/SIELMEN.2017.8123376

M. Popescu, A. Bitoleanu, V. Suru, M. Dobriceanu

{"title":"Increasing power quality in a 6-pulse DC-traction substation","authors":"M. Popescu, A. Bitoleanu, V. Suru, M. Dobriceanu","doi":"10.1109/SIELMEN.2017.8123376","DOIUrl":"https://doi.org/10.1109/SIELMEN.2017.8123376","url":null,"abstract":"This paper presents an active DC-traction substation with six-pulse uncontrolled rectifier, whose structure and control ensure the braking energy recovery and increased power quality in both traction and regeneration regimes. The key component in the power structure is a voltage source inverter-based shunt active power filter connected properly between the DC-traction line and the power supply. To meet the goal of unity power factor at the power supply side, the current provided by the inverter is indirectly controlled through the supply current. In the generation of the reference current, the adopted algorithm involves the intermediate transformation of the currents' three-phase system into a rotating phasor synchronous with the voltage space phasor. A dedicated Matlab-Simulink has been conceived for the whole system. The results of the simulation show that, during the traction regime, the shunt active power filter succeeds in injecting the proper required currents in the point of common coupling, so that almost sinusoidal currents are drawn from the power supply under unity power factor. During the regeneration regime, the voltage source inverter injects active power into the power supply, also under almost unity power factor conditions.","PeriodicalId":403279,"journal":{"name":"2017 International Conference on Electromechanical and Power Systems (SIELMEN)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134062090","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: 6

Analysis of one phase special electrical machines using finite element method 单相专用电机的有限元分析

2017 International Conference on Electromechanical and Power Systems (SIELMEN) Pub Date : 2017-10-01 DOI: 10.1109/SIELMEN.2017.8123321

M. M. Tezcan, A. Çanakoğlu, A. Yetgin, Ayhan Gün, Barış Cevher, M. Turan

{"title":"Analysis of one phase special electrical machines using finite element method","authors":"M. M. Tezcan, A. Çanakoğlu, A. Yetgin, Ayhan Gün, Barış Cevher, M. Turan","doi":"10.1109/SIELMEN.2017.8123321","DOIUrl":"https://doi.org/10.1109/SIELMEN.2017.8123321","url":null,"abstract":"Generally three phase motors are better than single phase motors but three phase system cannot be used in many applications for house. Especially single phase motors are used in city centers because of structure of the single phase feeder system. In general, small powered single phase motors in the range of 0.18–1.5 kW are used in small workplaces, portable hand looms, homes, fans, kitchen equipment, vacuum cleaner, drills and etc. In this paper, characteristic performance features of the single phase electrical machines that named universal motors, single phase induction motors (IM), shaded pole motors and 24 V permanent magnet direct current (PMDC) motors are studied. These motors are grouped in special electrical machines. Operational principles of the motors, areas of the usages and performance characteristics are given comparatively. Tests are conducted for motors. Current, voltage, revolution per minute, powers are given in graphs. ANSYS Maxwell programme is used for computer aided design of transient motor performances. Electrical characteristics of the motors are simulated with programme. Dynamical transient analysis of the motors are conducted respectively. It should not be forgotten that the data, graphs and tables obtained will help the students to learn the motors better in the Special Electrical Machines Course and Laboratory.","PeriodicalId":403279,"journal":{"name":"2017 International Conference on Electromechanical and Power Systems (SIELMEN)","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132136372","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: 3

Elevator drives: Present trends and perspectives 电梯驱动:呈现趋势和观点

2017 International Conference on Electromechanical and Power Systems (SIELMEN) Pub Date : 2017-10-01 DOI: 10.1109/SIELMEN.2017.8123374

B. Blanusa, B. Knezevic, Bojan Erceg, Đorđe Lekić, Predrag Mršić

引用次数: 1

Study, design and simulation of a laboratory module related to filters 研究，设计和仿真一个与滤波器相关的实验室模块

2017 International Conference on Electromechanical and Power Systems (SIELMEN) Pub Date : 2017-10-01 DOI: 10.1109/SIELMEN.2017.8123348

Marius Dan Benta, L. Leluțiu

引用次数: 0