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2008 11th International Conference on Optimization of Electrical and Electronic Equipment最新文献

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Probabilistic techniques for network assessment with significant wind generation 具有显著风力发电的网络评估的概率技术
2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI: 10.1109/OPTIM.2008.4602432
M. Conlon, A. Mumtaz, M. Farrel, E. Spooner
{"title":"Probabilistic techniques for network assessment with significant wind generation","authors":"M. Conlon, A. Mumtaz, M. Farrel, E. Spooner","doi":"10.1109/OPTIM.2008.4602432","DOIUrl":"https://doi.org/10.1109/OPTIM.2008.4602432","url":null,"abstract":"This paper presents a methodology for consideration of the nature of the power flow in a transmission network with significant levels of wind generation. A DC load flow approach is adopted to calculate the level and direction of power flow in response to varying levels of wind generation. The approach is applied to a section of the Irish transmission network.","PeriodicalId":244464,"journal":{"name":"2008 11th International Conference on Optimization of Electrical and Electronic Equipment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129611240","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: 5
The projecting of qualification framework for engineering domains 工程领域资质框架的投影
2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI: 10.1109/OPTIM.2008.4602512
P. Todos, S. Jicul
{"title":"The projecting of qualification framework for engineering domains","authors":"P. Todos, S. Jicul","doi":"10.1109/OPTIM.2008.4602512","DOIUrl":"https://doi.org/10.1109/OPTIM.2008.4602512","url":null,"abstract":"Within this paper we present a model of elaboration of National Qualification Framework and Study Programs for engineers' training on the basis of a competitive approach, European Credit Transfer System (ECTS), and the demands of the new higher educational structure on cycles: Bachelor-Master-Doctorate (B-M-D). This model constitutes the basis of all study programs in engineering domains proposed by the Technical University of Moldova, for example Engineering and Industrial Technologies, Energetics, Electrical Engineering, Technology of Food Products, Materials Technology etc.","PeriodicalId":244464,"journal":{"name":"2008 11th International Conference on Optimization of Electrical and Electronic Equipment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129461925","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 a simplified converter topology for fault tolerant motor drives 容错电机驱动的简化变换器拓扑研究
2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI: 10.1109/OPTIM.2008.4602409
L. Szabó, M. Ruba, D. Fodorean
{"title":"Study on a simplified converter topology for fault tolerant motor drives","authors":"L. Szabó, M. Ruba, D. Fodorean","doi":"10.1109/OPTIM.2008.4602409","DOIUrl":"https://doi.org/10.1109/OPTIM.2008.4602409","url":null,"abstract":"Some of the recent research activities in the area of electrical machines and drives for critical applications (such as aerospace, defence, medical, nuclear power plants, etc.) are focused on looking for various special motor and converter topologies. Nowadays by the help of recent technological advances and developments in the area of power electronics and motor control the fault tolerant electrical machine and drive concept is at a level where it begun to be feasible to be used in practice [1]. Therefore any new results could be of real interest for all the specialists working in these fields. In the paper a simplified power converter topology is proposed for a nine-phase fault-tolerant permanent magnet synchronous machine. By coupled Flux 2D and Simulink transient simulations the behaviour of the drive system under different winding fault conditions is studied. It is proved that using the simplified converter topology near the same torque development capability of the machine in faulty states can be assured. Short discussion on making the converter also fault-tolerant is included in the paper, too.","PeriodicalId":244464,"journal":{"name":"2008 11th International Conference on Optimization of Electrical and Electronic Equipment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129738286","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: 22
A solution for frequency control in islanded three-phase micro-grids supplied by Renewable Energy Sources 可再生能源供电的孤岛三相微电网频率控制解决方案
2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI: 10.1109/OPTIM.2008.4602428
I. Serban, C. Marinescu
{"title":"A solution for frequency control in islanded three-phase micro-grids supplied by Renewable Energy Sources","authors":"I. Serban, C. Marinescu","doi":"10.1109/OPTIM.2008.4602428","DOIUrl":"https://doi.org/10.1109/OPTIM.2008.4602428","url":null,"abstract":"This paper studies the frequency control in an islanded micro-grid (MG) supplied by Renewable Energy Sources (RES). The MG contains two generators, a synchronous generator, an induction one, and loads. Frequency stabilization is obtained by using a hybrid solution with a dump load (DL) and an energy storage system (ESS) based on a battery bank. The generators available power and the loads demand gives the power unbalance, which lead to frequency deviation. To reestablish the initial power balance a power sharing algorithm it is used between DL and ESS. The system dynamic behavior is studied, under variable load and variable generated power. Also, the ESS battery state of charge is taken into account. Simulation of the system using Matlab/Simulink software was performed to illustrate the advantages and limitations of this control strategy.","PeriodicalId":244464,"journal":{"name":"2008 11th International Conference on Optimization of Electrical and Electronic Equipment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130521946","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: 10
Power electronics control of wind energy in distributed power systems 分布式电力系统中风能的电力电子控制
2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI: 10.1109/OPTIM.2008.4602332
F. lov, M. Ciobotaru, F. Blaabjerg
{"title":"Power electronics control of wind energy in distributed power systems","authors":"F. lov, M. Ciobotaru, F. Blaabjerg","doi":"10.1109/OPTIM.2008.4602332","DOIUrl":"https://doi.org/10.1109/OPTIM.2008.4602332","url":null,"abstract":"The global electrical energy consumption is still rising and there is an urgent demand to increase the power capacity. It is expected that the power capacity has to be doubled within 20 years. The production, distribution and use of energy should be as efficient as possible and incentives to save energy at the end-user should also be set up. Deregulation of energy has in the past lowered the investment in larger power plants, which means the need for new electrical power sources will be high in the near future. Two major technologies will play important roles to solve the future problems. One is to change the electrical power production sources from the conventional, fossil (and short term) based energy sources to renewable energy resources. The other is to use high efficient power electronics in power generation, power transmission/distribution and end-user application. This paper discuss the most emerging renewable energy sources, wind energy, which by means of power electronics are changing from being a minor energy source to be acting as an important power source in the energy system. Power electronics is the enabling technology and the presentation will cover the development in wind turbine technology from kW to MW, discuss which power electronic solutions are most feasible and used today.","PeriodicalId":244464,"journal":{"name":"2008 11th International Conference on Optimization of Electrical and Electronic Equipment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123865891","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: 56
A 2D-hysteresis current control for a three phase voltage source inverter 三相电压源逆变器的二维滞后电流控制
2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI: 10.1109/OPTIM.2008.4602402
H. Pfisterer, O. Simon
{"title":"A 2D-hysteresis current control for a three phase voltage source inverter","authors":"H. Pfisterer, O. Simon","doi":"10.1109/OPTIM.2008.4602402","DOIUrl":"https://doi.org/10.1109/OPTIM.2008.4602402","url":null,"abstract":"A 2D-hysteresis current controller has been designed. This hysteresis current controller combines the very fast dynamic response with a significant reduction of the necessary switching frequency compared with the classical hysteresis current controller. This is achieved by avoiding boundary cycles and using the zero voltage space vectors equally. A description of the general idea, simulation results and measurements at a 160 kVA hard- and a 160 kVA soft-switching Inverter will be presented in this paper.","PeriodicalId":244464,"journal":{"name":"2008 11th International Conference on Optimization of Electrical and Electronic Equipment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121658595","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
Network function generation for MIMO systems MIMO系统的网络功能生成
2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI: 10.1109/OPTIM.2008.4602339
M. Lordache, L. Dumitriu
{"title":"Network function generation for MIMO systems","authors":"M. Lordache, L. Dumitriu","doi":"10.1109/OPTIM.2008.4602339","DOIUrl":"https://doi.org/10.1109/OPTIM.2008.4602339","url":null,"abstract":"The paper presents two procedures for the network function generation in matrix form. One of them is based on the state equations and the other, on the semi-state equations. Both techniques can generate network functions in symbolic or numeric-symbolic form. The lumped linear circuits under consideration have multiple inputs and multiple outputs (MIMO). These methods can handle the largest class of linear circuits. The network functions in matrix form are very useful in the reduced-order model generation. Two illustrative examples are presented.","PeriodicalId":244464,"journal":{"name":"2008 11th International Conference on Optimization of Electrical and Electronic Equipment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114882291","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
Position sensorless direct torque control of BLDC motor by using modifier 无刷直流电动机无位置传感器直接转矩控制
2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI: 10.1109/OPTIM.2008.4602393
G. Markadeh, S. Mousavi, E. Daryabeigi
{"title":"Position sensorless direct torque control of BLDC motor by using modifier","authors":"G. Markadeh, S. Mousavi, E. Daryabeigi","doi":"10.1109/OPTIM.2008.4602393","DOIUrl":"https://doi.org/10.1109/OPTIM.2008.4602393","url":null,"abstract":"Direct torque control (DTC) can directly control the inverter states in order to reduce the torque error within the prefixed band limit DTC of brushless dc drive with trapezoidal back-EMF is presented in this paper. Using the rotor flux vector position in alpha - beta axis stationary reference frame and torque error, the proper switching pattern can be selected to control the generated torque and reducing commutation torque ripple. Sliding mode observer, which is robust to parameter uncertainties can be used to estimate the back-EMF and the generated torque. The rotor flux vector position estimation and its novel modifier can be achieved using a rotor flux observer. Simulation and experimental results confirm that the proposed method is good idea to introduce reliable sensorless scheme.","PeriodicalId":244464,"journal":{"name":"2008 11th International Conference on Optimization of Electrical and Electronic Equipment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124269185","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: 13
Power flow control on wind power plant with permanent magnet synchronous generator 永磁同步风力发电厂潮流控制
2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI: 10.1109/OPTIM.2008.4602443
L.N. Modran
{"title":"Power flow control on wind power plant with permanent magnet synchronous generator","authors":"L.N. Modran","doi":"10.1109/OPTIM.2008.4602443","DOIUrl":"https://doi.org/10.1109/OPTIM.2008.4602443","url":null,"abstract":"This paper presents a wind electric conversion system composed of: permanent magnet synchronous generator, three-phase diode rectifier, DC/DC buck converter, PWM voltage inverter and transformer feeding a network. The PWM voltage inverter current controllers impose that the mains currents will have near sinusoidal waveforms with unity power factor, leading to a high quality power delivered to the mains. The most elaborated system control the active and reactive power and is appropriate to the large power plants. The numerical simulations uses Matlab-Simulink environment.","PeriodicalId":244464,"journal":{"name":"2008 11th International Conference on Optimization of Electrical and Electronic Equipment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124532802","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: 7
Efficient data propagation techniques and security concerns in low rate wireless personal area networks in outdoor and indoor scenarios 室外和室内低速率无线个人区域网络中高效数据传播技术和安全问题
2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI: 10.1109/OPTIM.2008.4602480
M. Machedon-Pisu, I. Székely, R. Gavrus
{"title":"Efficient data propagation techniques and security concerns in low rate wireless personal area networks in outdoor and indoor scenarios","authors":"M. Machedon-Pisu, I. Székely, R. Gavrus","doi":"10.1109/OPTIM.2008.4602480","DOIUrl":"https://doi.org/10.1109/OPTIM.2008.4602480","url":null,"abstract":"In order to establish reliable data transmissions in wireless networks inside buildings and outside, all the factors that influence the signal propagation must be considered. The evaluation of the link quality is possible with the received signal strength indicator (RSSI) and the link quality indicator (LQI). The link quality measurements were performed in different scenarios between two ZigBee devices. Depending on the results, the network was optimized in order to have efficient data propagation. LQI measurements can also be used for determining the distance between nodes, and the algorithms described in the paper can determine the coordinates of a central node when the neighbour nodes' position is known. It is possible to estimate the position of an important node in real-time, and therefore address the security concerns within a wireless network.","PeriodicalId":244464,"journal":{"name":"2008 11th International Conference on Optimization of Electrical and Electronic Equipment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126229362","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
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