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Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521)最新文献

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On-line stator winding fault diagnosis in induction generators for renewable generation 可再生发电异步发电机定子绕组故障在线诊断
Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521) Pub Date : 2004-05-12 DOI: 10.1109/MELCON.2004.1348226
I. Albizu, A. Tapia, J. Sáenz, A. Mazón, I. Zamora
{"title":"On-line stator winding fault diagnosis in induction generators for renewable generation","authors":"I. Albizu, A. Tapia, J. Sáenz, A. Mazón, I. Zamora","doi":"10.1109/MELCON.2004.1348226","DOIUrl":"https://doi.org/10.1109/MELCON.2004.1348226","url":null,"abstract":"Renewable generation systems are increasing its presence in electrical power systems. For this reason, it is more important than ever to count with reliable and secure generation systems. In this way, the use of on-line diagnostic techniques in the maintenance schemes can be useful. This paper is about on-line condition monitoring in induction generators for small hydro stations and wind farms. In particular, stator winding fault diagnosis is analyzed. Currently, there are diagnostic techniques that are used in induction motors, but they could be used in generators as well. This paper analyzes the induction generator characteristics and describes the appropriate diagnostic techniques. These techniques depend on the machine voltage. As most of the induction generators are low voltage machines, the diagnosis of stator winding faults will be based on the detection of inter-turn short circuits. Most of the inter-turn short circuit diagnostic techniques are noninvasive as they are based on voltage and line current monitoring.","PeriodicalId":164818,"journal":{"name":"Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126886409","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: 29
A Web-based approach to the specification and programming of home automation systems 基于web的家庭自动化系统规范和编程方法
Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521) Pub Date : 2004-05-12 DOI: 10.1109/MELCON.2004.1347024
R. Nunes
{"title":"A Web-based approach to the specification and programming of home automation systems","authors":"R. Nunes","doi":"10.1109/MELCON.2004.1347024","DOIUrl":"https://doi.org/10.1109/MELCON.2004.1347024","url":null,"abstract":"In this paper, we address the problem of specifying a home automation system and behaviour programming. We propose a Web-based approach that offers a generic solution and is independent of the automation technology used. To achieve this degree of independence, our implementation describes an abstract model of the home automation device. We also present a simple model for describing the physical structure of a home. In this way, our approach can describe any system for any house. We also present a model for defining the required behavior for a system. This model is based on IF...THEN clauses, which are simple to understand and apply for common users. Finally, we describe our implementation.","PeriodicalId":164818,"journal":{"name":"Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521)","volume":"280 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125858627","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: 18
Defining of the initial conditions in the switching circuits 定义开关电路的初始条件
Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521) Pub Date : 2004-05-12 DOI: 10.1109/MELCON.2004.1346771
M. Demir, A. Bekir Yildiz
{"title":"Defining of the initial conditions in the switching circuits","authors":"M. Demir, A. Bekir Yildiz","doi":"10.1109/MELCON.2004.1346771","DOIUrl":"https://doi.org/10.1109/MELCON.2004.1346771","url":null,"abstract":"In this paper, a method is given for defining the initial conditions in the switching circuits. In these circuits, peak currents/voltages (Dirac impulses) occur especially during switching instants. Therefore, the initial conditions of the system variables in t=0/sup +/ (after switching) must be defined for time-domain analysis of the switching circuits. Normally, the initial conditions of the system variables in t=0/sup +/ (before switching) are accepted as initial values of the system and used for the time-domain solution. But, sometimes in the switching circuits, the derivative components of the sources can be seen in the system equations when the switches change their states. It means that there are peak currents/voltages in the system. In this case, using the initial conditions in t=0/sup +/ leads to incorrect solutions in the system analysis. Therefore, the initial conditions in t=0/sup +/ must be calculated by the initial conditions in t=0/sup +/. These values can be used in the solving of the system equations.","PeriodicalId":164818,"journal":{"name":"Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127346257","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: 2
Remote control of uninterruptible power systems 不间断电力系统的远程控制
Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521) Pub Date : 2004-05-12 DOI: 10.1109/MELCON.2004.1348089
S. Milisa, D. Skrlec
{"title":"Remote control of uninterruptible power systems","authors":"S. Milisa, D. Skrlec","doi":"10.1109/MELCON.2004.1348089","DOIUrl":"https://doi.org/10.1109/MELCON.2004.1348089","url":null,"abstract":"The increasing sophistication of information technology equipment (IT) and automated industrial systems and their increased performance levels, require constant and high quality electrical power supply. But electrical energy has disturbances (transients, sags/brownouts, frequency variations, blackouts) which remain frequent because it isn't technically feasible to eliminate them completely. The UPS is one solution for these disturbances, and with options of remote monitoring and signalling they represent a key element in high quality electric power installations.","PeriodicalId":164818,"journal":{"name":"Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127150371","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
Single phase active power filter 单相有源电力滤波器
Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521) Pub Date : 2004-05-12 DOI: 10.1109/MELCON.2004.1348263
S. Sladic, M. Odavic, Ž. Jakopović
{"title":"Single phase active power filter","authors":"S. Sladic, M. Odavic, Ž. Jakopović","doi":"10.1109/MELCON.2004.1348263","DOIUrl":"https://doi.org/10.1109/MELCON.2004.1348263","url":null,"abstract":"Single phase active power filter (APF) with sliding mode control is analyzed mathematically and by simulation. An APF is power electronics device that is connected parallel to the grid and the load, with task to cancel the reactive and harmonic currents caused by nonlinear loads connected to the grid. Proposed solution is implemented on laboratory test system with universal microprocessor control system. Behavior of realized APF is analyzed under different conditions. Limitations of used microprocessor control system for APF with sliding mode control using Matlab - Simulink are explored.","PeriodicalId":164818,"journal":{"name":"Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521)","volume":"39 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120925528","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
Autonomous library for evolutionary algorithms 自主进化算法库
Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521) Pub Date : 2004-05-12 DOI: 10.1109/MELCON.2004.1346999
M. Sprogar
{"title":"Autonomous library for evolutionary algorithms","authors":"M. Sprogar","doi":"10.1109/MELCON.2004.1346999","DOIUrl":"https://doi.org/10.1109/MELCON.2004.1346999","url":null,"abstract":"The implementation of an evolutionary algorithm is always tweaked to a certain problem and is therefore not portable to the other problem domains. This is mainly because of the sensitive fitness function that ties the evolution to the problem. In order to create a general EA library, we avoided the regular fitness evaluation and use a more natural implicit fitness concept. We created an independent EA library that needs minimal programming to create solutions for different problem areas. The library engine evolves the two types of individuals, which holds the discovered knowledge, and uses a non-standard implicit fitness evaluation in a co-evolving environment. This library was used to create an EA program for the induction of decision trees.","PeriodicalId":164818,"journal":{"name":"Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521)","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123305478","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
An off-line electronic cash system with revokable anonymity 一种可撤销匿名的离线电子现金系统
Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521) Pub Date : 2004-05-12 DOI: 10.1109/MELCON.2004.1347042
C. Popescu
{"title":"An off-line electronic cash system with revokable anonymity","authors":"C. Popescu","doi":"10.1109/MELCON.2004.1347042","DOIUrl":"https://doi.org/10.1109/MELCON.2004.1347042","url":null,"abstract":"Many electronic cash systems have been proposed with the proliferation of the Internet and the activation of electronic commerce. Maitland and Boyd proposed at ICICS 2001 an offline electronic cash system based on a group signature scheme proposed by Ateniese, Camenisch, Joye and Tsudik. Their scheme cannot be used to solve blackmailing and other anonymity problems such as money laundering and illegal purchases. In this paper we extend the electronic cash system of Maitland and Boyd to prevent blackmailing, money laundering and illegal purchases by using a secure coalition-resistant group blind signature scheme.","PeriodicalId":164818,"journal":{"name":"Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126857883","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: 15
Energy fuel saving benefit of a wind turbine 风力涡轮机的节能效益
Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521) Pub Date : 2004-05-12 DOI: 10.1109/MELCON.2004.1348233
A. S. Malik, A. Awsanjli
{"title":"Energy fuel saving benefit of a wind turbine","authors":"A. S. Malik, A. Awsanjli","doi":"10.1109/MELCON.2004.1348233","DOIUrl":"https://doi.org/10.1109/MELCON.2004.1348233","url":null,"abstract":"The paper presents a study carried out to investigate the economics of wind turbine as an energy fuel saver. The load and the wind data is taken from a remote agricultural research station in Oman. The station is provided electricity with diesel-engine generating units. The annual peak load and minimum load recorded at the site is 130 kW and 28 kW respectively. The annual average wind speed at the site is 5.7 m/s. A 50 kW wind turbine is selected to demonstrate the economic feasibility of the turbine as a fuel saver. The results show that wind energy utilization is an attractive option with total specific cost of the selected wind turbine at 9.3 c/kWh at 10% discount rate comparing to diesel generation operating cost of 10.3 c/kWh, considering the capital cost of diesel units as sunk. The simple payback period of the turbine is 8.5 years.","PeriodicalId":164818,"journal":{"name":"Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133157230","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
Extended Kalman filter based mobile robot pose tracking using occupancy grid maps 基于扩展卡尔曼滤波的移动机器人姿态跟踪
Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521) Pub Date : 2004-05-12 DOI: 10.1109/MELCON.2004.1346851
E. Ivanjko, I. Petrović
{"title":"Extended Kalman filter based mobile robot pose tracking using occupancy grid maps","authors":"E. Ivanjko, I. Petrović","doi":"10.1109/MELCON.2004.1346851","DOIUrl":"https://doi.org/10.1109/MELCON.2004.1346851","url":null,"abstract":"Mobile robot pose tracking is mostly based on odometry. However, with time, odometric pose tracking accumulates errors in an unbounded fashion. This paper describes a way to decrease the odometry error by using an extended Kalman filter (EKF) for fusion of calibrated odometry data and sonar readings. Common approaches for calibrated odometry and sonar fusion use a feature based map which has two uncertainties in the measurement process. One uncertainty is related to the sonar range reading and the other one to the feature/range reading assignment. Our approach is adapted to an occupancy grid map which has only the sonar range reading uncertainty in the measured process. Experimental results on the mobile robot Pioneer 2DX show improved accuracy of the pose estimation compared to the calibrated odometry.","PeriodicalId":164818,"journal":{"name":"Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521)","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133413486","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: 48
Agent-based modeling of transmission power system for supervision and control 基于agent的输电系统监控建模
Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521) Pub Date : 2004-05-12 DOI: 10.1109/MELCON.2004.1348090
B. Dobraš, M. Randić, G. Gudac
{"title":"Agent-based modeling of transmission power system for supervision and control","authors":"B. Dobraš, M. Randić, G. Gudac","doi":"10.1109/MELCON.2004.1348090","DOIUrl":"https://doi.org/10.1109/MELCON.2004.1348090","url":null,"abstract":"Restructuring and deregulation of the electric power systems is the key factor that is particularly affecting power system operation. In this new competitive environment it is essential to ensure reliable power system operation, supervision and control of the whole system. Introducing new types of devices, that provide the whole lot more information from the system, creates the problem for the operator who has to manage it. Complexity of the system is increasing and new approaches must be considered to help operators. To overcome this complexity agent-based model and control policy specification are proposed. Proposed model is based on the Common Information Model and object oriented approach.","PeriodicalId":164818,"journal":{"name":"Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122433752","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
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