2017 International Conference on Electromechanical and Power Systems (SIELMEN)最新文献_第7页

Coordinated reactive power control of DFIG to improve LVRT characteristics of FSIG in wind turbine generation DFIG无功协调控制改善风力发电FSIG LVRT特性

2017 International Conference on Electromechanical and Power Systems (SIELMEN) Pub Date : 2017-10-01 DOI: 10.1109/SIELMEN.2017.8123328

M. Q. Duong, G. Sava

{"title":"Coordinated reactive power control of DFIG to improve LVRT characteristics of FSIG in wind turbine generation","authors":"M. Q. Duong, G. Sava","doi":"10.1109/SIELMEN.2017.8123328","DOIUrl":"https://doi.org/10.1109/SIELMEN.2017.8123328","url":null,"abstract":"In almost all European countries, the penetration of wind power systems and the wind turbines size continuously increases. Therefore, the grid code requirements are more and more restrictive concerning the necessity that the wind turbine to remain connected to the grid during a fault situation. This paper analyzes the possibilities to have more accurate wind generation transient stability models for fixed speed wind turbined and variable speed wind turbines. Wind system using a fixed-speed wind power generator SCIG (FSIG) cannot stay connected to the grid during faults because they cannot deliver reactive power causing a voltage drop and even voltage instability. To respect the recent grid codes and to improve the low voltage ride through capability of fixed-speed wind power generatorthis paper proposes a new control capability of PI technique method for a variable-speed wind power doubly-fed induction generator located close of the grid. The proposed control method of both grid-side converter and rotor-side converter enables the doubly fed induction generator to regulate the reactive power consumed by the fixed-speed wind power generator. The results of the simulation confirmed the theoretical wind turbines operation.","PeriodicalId":403279,"journal":{"name":"2017 International Conference on Electromechanical and Power Systems (SIELMEN)","volume":"66 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":"116598274","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: 11

Mathematical modeling of hydrodinamic processes in the rotors of flow micro-hydropower plants 流式微型水电厂转子水动力过程的数学建模

2017 International Conference on Electromechanical and Power Systems (SIELMEN) Pub Date : 2017-10-01 DOI: 10.1109/SIELMEN.2017.8123337

V. Bostan, I. Bostan, V. Dulgheru, M. Vaculenco, O. Ciobanu

引用次数: 2

Trajectories in the competence field: During formative assessment 能力领域的轨迹:形成性评估

2017 International Conference on Electromechanical and Power Systems (SIELMEN) Pub Date : 2017-10-01 DOI: 10.1109/SIELMEN.2017.8123349

C. Galatanu

{"title":"Trajectories in the competence field: During formative assessment","authors":"C. Galatanu","doi":"10.1109/SIELMEN.2017.8123349","DOIUrl":"https://doi.org/10.1109/SIELMEN.2017.8123349","url":null,"abstract":"The issue of competence assessment in engineering is analyzed in the context of the lack of motivation for learning. The source of this lack of motivation comes from the distribution of high school students. This assignment creates marginalization for a large number of students. Exit from marginalization can be accomplished through additional motivation. This is the responsibility of the competence assessment system. The proposed system is based on Bloom's taxonomy, with the questions being based on Bloom's verbs. It results an adaptive test system where questions are tailored to each individual's level of training. Another condition for generating motivation is to waive the confidentiality of ratings. The main argument is that this confidentiality supports mediocrity. A tonic competition is preferred. The author's experience demonstrates that this kind of competition is possible, especially using the gamefication. There is also the graphical image of the evolution of competence assessed, called the trajectory in the competence field. The results may have very close scores, but nevertheless the assessment can separate the full skills from the insufficient competencies without diminishing the motivating nature of the test itself.","PeriodicalId":403279,"journal":{"name":"2017 International Conference on Electromechanical and Power Systems (SIELMEN)","volume":"13 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":"122673892","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

Maximum power point tracking applied to PV systems under partial shading conditions 最大功率点跟踪应用于部分遮阳条件下的光伏系统

2017 International Conference on Electromechanical and Power Systems (SIELMEN) Pub Date : 2017-10-01 DOI: 10.1109/SIELMEN.2017.8123334

S. Abdourraziq, M. A. Abdourraziq, C. Darab

引用次数: 5

Using differential evolution algorithms for the analysis of nonlinear circuits 采用差分进化算法对非线性电路进行分析

2017 International Conference on Electromechanical and Power Systems (SIELMEN) Pub Date : 2017-10-01 DOI: 10.1109/SIELMEN.2017.8123297

C. Petrescu, O. Plopa

引用次数: 0

Analysis of the state and methods for increasing the efficiency of operation of district heating system in the Chisinau municipality 基希讷乌市区域供热系统运行效率的现状及方法分析

2017 International Conference on Electromechanical and Power Systems (SIELMEN) Pub Date : 2017-10-01 DOI: 10.1109/SIELMEN.2017.8123394

Gennady Oclanschi, V. Babich, V. Berzan, V. Postolaty

引用次数: 0

Limits and usability of fast Fourier, Discrete wavelet and wavelet packet transforms applied at signals from a primary winding of a locomotive transformer 快速傅立叶变换、离散小波变换和小波包变换应用于机车变压器一次绕组信号的局限性和可用性

2017 International Conference on Electromechanical and Power Systems (SIELMEN) Pub Date : 2017-10-01 DOI: 10.1109/SIELMEN.2017.8123369

I. Nicolae, R. Marinescu, P. Nicolae, Maria Diana Cristina

引用次数: 6

Method of the parameters determination of the asynchronous motor 异步电动机参数的确定方法

2017 International Conference on Electromechanical and Power Systems (SIELMEN) Pub Date : 2017-10-01 DOI: 10.1109/SIELMEN.2017.8123314

A. Tudor, Burduniuc Marcel, Lazlovetchi Leonid, I. Maria

引用次数: 0

FEM-based analysis on the operation of three-phase induction motor connected to six-phase supply system: Part 2 — Study on fault-tolerance capability 基于有限元法的三相感应电动机与六相供电系统的运行分析:第二部分——容错能力研究

2017 International Conference on Electromechanical and Power Systems (SIELMEN) Pub Date : 2017-10-01 DOI: 10.1109/SIELMEN.2017.8123311

L. Livadaru, Alexandra Bobu, A. Munteanu, B. Virlan, A. Simion

引用次数: 2

Time delay evaluation in printed circuit boards based on timed hard Petri nets 基于定时硬Petri网的印刷电路板时延评估

2017 International Conference on Electromechanical and Power Systems (SIELMEN) Pub Date : 2017-10-01 DOI: 10.1109/SIELMEN.2017.8123292

Sudacevschi Viorica, Ababii Victor, Calugari Dmitri, Bordian Dimitrie

引用次数: 1