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2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)最新文献

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Power system state estimator with inclusion of time-synchronized phasor measurements 包含时间同步相量测量的电力系统状态估计器
2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM) Pub Date : 2012-05-24 DOI: 10.1109/OPTIM.2012.6231785
V. I. Presada
{"title":"Power system state estimator with inclusion of time-synchronized phasor measurements","authors":"V. I. Presada","doi":"10.1109/OPTIM.2012.6231785","DOIUrl":"https://doi.org/10.1109/OPTIM.2012.6231785","url":null,"abstract":"State estimation provides the platform for advanced security monitoring applications in control centers. It determines a best estimate of the current actual power system based on available SCADA measurements and power system model data. Traditional power system state estimation has been undergoing an essential change because of the extensive application of Phasor Measurement Unit (PMU). PMU data provides the direct measurement of state which can significantly simplify the traditional state estimator and does not require any major changes of the existing state estimator. It is anticipated a gradual migration towards full PMU implementation for utility power systems. The logical direction is towards full observability with PMUs. Due to cost considerations, it is expected that utilities will execute a phased installation of PMUs, that is, batches of PMUs being installed through time. A MATLAB application was developed and simulations were done on IEEE 14 bus system and on IEEE 30 bus system.","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117290588","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
Development of tools for simulation systems in a distribution network and validated by measurements 开发配电网仿真系统的工具，并通过测量验证
2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM) Pub Date : 2012-05-24 DOI: 10.1109/OPTIM.2012.6231807
L. Mihet-Popa, C. Koch-Ciobotaru, F. Isleifsson, H. Bindner
{"title":"Development of tools for simulation systems in a distribution network and validated by measurements","authors":"L. Mihet-Popa, C. Koch-Ciobotaru, F. Isleifsson, H. Bindner","doi":"10.1109/OPTIM.2012.6231807","DOIUrl":"https://doi.org/10.1109/OPTIM.2012.6231807","url":null,"abstract":"The increasing amount of DER components into distribution networks involves the development of accurate simulation models that take into account an increasing number of factors that influence the output power from the DG systems. This paper presents two simulation models: a PV panel model using the single-diode four-parameter model based on data sheet values and a VRB system model based on the efficiency of different components and the power losses. The models were implemented first in MATLAB/Simulink and the results have been compared with the data sheet values and with the characteristics of the units. Moreover to point out the strong dependency on ambient conditions and its influence on array operation and to validate simulation results with measured data a complex model has also been developed. A PV inverter model and a VRB inverter model, using the same equations and parameters as in MATLAB/Simulink, has also been developed and implemented in Power Factory to study load flow, steady-state voltage stability and dynamic behavior of a distribution power system.","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"44 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132913718","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
A cloud-based virtual computing laboratory for teaching computer networks 基于云的计算机网络教学虚拟计算实验室
2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM) Pub Date : 2012-05-24 DOI: 10.1109/OPTIM.2012.6231992
R. Dinita, G. Wilson, A. Winckles, M. Cirstea, A. Jones
{"title":"A cloud-based virtual computing laboratory for teaching computer networks","authors":"R. Dinita, G. Wilson, A. Winckles, M. Cirstea, A. Jones","doi":"10.1109/OPTIM.2012.6231992","DOIUrl":"https://doi.org/10.1109/OPTIM.2012.6231992","url":null,"abstract":"This paper presents a novel `Cloud-based' solution for teaching computer networks in an educational context. One key advantage of the system is its ability to commission and decommission virtual infrastructures comprised of routers, switches and virtual machines on demand. It makes use of hardware located in different physical locations, VMWare software to manage the virtual resources and NetLab+ to manage the configuration of multiple different virtual scenarios. The key features of the cloud infrastructure are described and evaluated.","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133413569","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: 28
A Matlab simulator tool for a class E power amplifier designed to generate plasma torch 一个Matlab仿真工具，用于E类功率放大器产生等离子炬
2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM) Pub Date : 2012-05-24 DOI: 10.1109/OPTIM.2012.6231867
A. Grama, D. Petreus
{"title":"A Matlab simulator tool for a class E power amplifier designed to generate plasma torch","authors":"A. Grama, D. Petreus","doi":"10.1109/OPTIM.2012.6231867","DOIUrl":"https://doi.org/10.1109/OPTIM.2012.6231867","url":null,"abstract":"The concept of “class E” was introduced by N. O. Sokal and A. D. Sokal, offering a new concept of high efficiency power amplifiers. The class E power amplifier is not defined by a special topology. The chosen circuit is a tuned amplifier, consisting of a single switch and a load network. The load network configuration consists of the shunt capacitance, series inductance, and series filter tuned to the fundamental frequency to provide a high level of harmonic suppression. This working class has the advantage of their design simplicity and high efficiency operation. Using the basic equations for class E amplifier, a user friendly graphic interface was implemented. This interface is a useful tool for simulations and design. Using this interface various waveforms from the circuit can be viewed so the real values of circuit components can be accurately estimated. Also the interface calculates the power efficiency, power consumption for different loads, etc. The power amplifier designed using this tool is used to generate plasma torch. In these torch is placed an earth sample using Argon gas as the transporter. A spectrometer is placed near plasma and is connected to a laptop. With this system is possible to detect the chemical composition of the earth sample. So, the entire system can be used in chemical determinations of the earth sample. The main advantage of this application consist in portability, efficiency and easy to use the system.","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131881860","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
Experimental analysis for plate-type electrostatic precipitators with three sections 三段板式静电除尘器的实验分析
2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM) Pub Date : 2012-05-24 DOI: 10.1109/OPTIM.2012.6231779
G. Popa, S. Deaconu, I. Popa, C. Diniș
{"title":"Experimental analysis for plate-type electrostatic precipitators with three sections","authors":"G. Popa, S. Deaconu, I. Popa, C. Diniș","doi":"10.1109/OPTIM.2012.6231779","DOIUrl":"https://doi.org/10.1109/OPTIM.2012.6231779","url":null,"abstract":"The plate-type electrostatic precipitators have been use by industry applications as the preferred method for controlling pollution with dust particles. This article is presenting an experimental analysis of the current-voltage characteristics, dust emissions and powers absorbed by the sources of some three-section electrostatic precipitators from a thermo-electrical power plant. Due to complex phenomena, at industrial electrostatic precipitators the current-voltage characteristics from the sections are permanently modifying, which makes impossible the mathematic modelling. It was not noticed a mathematical connection between the evolution of the dust emissions and powers absorbed by the supply sources.","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115341652","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: 4
New multilevel Flying-Capacitor inverters with coupled-inductors 新型耦合电感多电平飞电容逆变器
2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM) Pub Date : 2012-05-24 DOI: 10.1109/OPTIM.2012.6231882
D. Floricau, G. Gateau, T. Meynard
{"title":"New multilevel Flying-Capacitor inverters with coupled-inductors","authors":"D. Floricau, G. Gateau, T. Meynard","doi":"10.1109/OPTIM.2012.6231882","DOIUrl":"https://doi.org/10.1109/OPTIM.2012.6231882","url":null,"abstract":"In the paper a new five-level (5L) inverter based on unidirectional Flying-Capacitor switching cells is presented. It is named 5L-Flying-Capacitor with Coupled-Inductor (5L-FC-CI) and consists in parallel connection of two unidirectional (P and N) three-level (3L) Flying-Capacitor switching cells with a coupled-inductor. The PWM output voltage is vastly improved and the switch control dead times is eliminated, particularly when compared with the 3L inverter obtained with bidirectional Flying-Capacitor cells. The phase-shifted carrier (PSC) modulation is used to control the new 5L topology. Thus, the proposed structure ensures an apparent switching frequency in each winding of coupled-inductors twice of switching frequency. The analysis of the new inverter is verified by numerical simulations both for single- and for three-phase topologies and their features are generalized for N odd voltage-levels (NL).","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"145 10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115924938","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
Classification of voltage sags in distribution systems due to short circuit faults 配电系统短路故障电压跌落的分类
2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM) Pub Date : 2012-05-24 DOI: 10.1109/OPTIM.2012.6231851
S. Kamble, C. Thorat
{"title":"Classification of voltage sags in distribution systems due to short circuit faults","authors":"S. Kamble, C. Thorat","doi":"10.1109/OPTIM.2012.6231851","DOIUrl":"https://doi.org/10.1109/OPTIM.2012.6231851","url":null,"abstract":"Voltage sags, one of the major power quality problems, are often caused by power systems faults. Many utilities have been trying to solve this problem but it still has not been any solution to prevent faults in power system. This paper presents a systematic and intuitive approach to analysis and classification of voltage sags, due to short-circuit faults in a 11kV distribution network. The symmetrical component classification is based on the decomposition of the three phase voltages. From positive and negative-sequence voltage a generalized magnitude for the event is defined. Generally, each type of voltage sag has different characteristics, i.e. magnitude and phase angle, and these characteristics are also different when the transformer winding connection is taken into consideration. The industrial 33/11 kV distribution network at Bajaj Hospital is taken as a case study. Simulation studies have been performed by using MATLAB/SIMULINK software.","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114308647","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
Power losses evaluation of two and three-level NPC inverters considering drive applications 考虑驱动应用的二电平和三电平NPC逆变器的功率损耗评估
2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM) Pub Date : 2012-05-24 DOI: 10.1109/OPTIM.2012.6231984
L. Cloţea, A. Forcos
{"title":"Power losses evaluation of two and three-level NPC inverters considering drive applications","authors":"L. Cloţea, A. Forcos","doi":"10.1109/OPTIM.2012.6231984","DOIUrl":"https://doi.org/10.1109/OPTIM.2012.6231984","url":null,"abstract":"Wind pumped storage systems are becoming more and more attractive in the context of higher quantities of wind power to be absorbed by the grid, power system stability, load balancing and frequency control. The power losses of a pump drive inverter system are evaluated considering two different topologies: 2L VSC and respectively 3L NPC VSC starting from 2.2 kW up to 1.85 MW power levels. The analyze is based on practical application considering the standard LV and MV of the induction machine supply RMS voltages and the latest IGBT 3, IGBT 4 (trench technology) and the press-pack IGBT technology for the semiconductor switches.","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130107028","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
On-line estimation of stator resistance and mutual inductance of multiphase induction machines 多相感应电机定子电阻和互感的在线估计
2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM) Pub Date : 2012-05-24 DOI: 10.1109/OPTIM.2012.6231950
M. Mengoni, S. Agarlita, L. Zarri, D. Casadei
{"title":"On-line estimation of stator resistance and mutual inductance of multiphase induction machines","authors":"M. Mengoni, S. Agarlita, L. Zarri, D. Casadei","doi":"10.1109/OPTIM.2012.6231950","DOIUrl":"https://doi.org/10.1109/OPTIM.2012.6231950","url":null,"abstract":"Multiphase drives are receiving attention not only for medium and high power applications, but also for some low power applications, such as heavy electric vehicles. In the case of multiphase induction machines, the most widely adopted control technique is the field-oriented vector control, which provides high torque dynamics and can exploits all the degrees of freedom that this technology offers, but requires an adequate knowledge of the machine parameters. In this paper, a technique for the on-line estimation of the stator resistance and the magnetizing inductances is proposed. Under the assumption that the machine torque is produced by the fundamental component of the air-gap magnetic field, the proposed technique controls the higher harmonics in such a way to excite the machine and to estimate the unknown parameters. Experimental tests confirm the feasibility of the method described in the paper.","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130667288","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: 9
Development of a system for mapping of thrust ripple induced by PMLSM drives in a single-deck, dual-axis precision stage 在单甲板双轴精密工作台中，PMLSM驱动引起的推力脉动映射系统的开发
2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM) Pub Date : 2012-05-24 DOI: 10.1109/OPTIM.2012.6231818
F. Kuo, C. Western, J. Yen
{"title":"Development of a system for mapping of thrust ripple induced by PMLSM drives in a single-deck, dual-axis precision stage","authors":"F. Kuo, C. Western, J. Yen","doi":"10.1109/OPTIM.2012.6231818","DOIUrl":"https://doi.org/10.1109/OPTIM.2012.6231818","url":null,"abstract":"Permanent magnet linear synchronous motors (PMLSMs) are becoming increasingly popular for implementation in industrial precision stages. While PMLSMs minimize friction and other undesirable effects in the stages, they induce thrust ripple, which significantly affects control of the devices and has recently been the subject of concentrated research. This paper presents the design and implementation of an innovative mechanism for measuring thrust ripple in two dimensions over the plane of motion of a PMLSM-driven precision planar stage that is currently in development. The device restricts motion in one direction and uses a load cell to measure stage thrust force in the perpendicular direction at intervals across the device's operating range. The variation of thrust force in relation to position as well as q-axis input current magnitude was measured. Results support the assumption of wavelike, position-dependent PMLSM-induced thrust ripple in the direction of stage motion and have implications in the development of control systems for such devices.","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130778600","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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