发布求助
文献互助 智能选刊 最新文献

2007 Electrical Insulation Conference and Electrical Manufacturing Expo最新文献

筛选
英文 中文
How ultrasound can detect electrical discharge non-invasively and help eliminate arc flash incidents 超声波如何非侵入性地检测放电并帮助消除电弧闪光事件
2007 Electrical Insulation Conference and Electrical Manufacturing Expo Pub Date : 2007-10-01 DOI: 10.1109/EEIC.2007.4562629
M. Goodman
{"title":"How ultrasound can detect electrical discharge non-invasively and help eliminate arc flash incidents","authors":"M. Goodman","doi":"10.1109/EEIC.2007.4562629","DOIUrl":"https://doi.org/10.1109/EEIC.2007.4562629","url":null,"abstract":"Significant progress has been made of the past several years in understanding the hazards of arcing faults to maintenance personnel working on electrical equipment. The various standards such as the National Electrical Code requires how a piece of electrical equipment is manufactured, labeled and installed, but does not address the hazards associated when the equipment doors are opened and an arc fault or flash occurs.","PeriodicalId":152045,"journal":{"name":"2007 Electrical Insulation Conference and Electrical Manufacturing Expo","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133405082","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
Experimentation on humidity propagation in high voltage alternator stator bar insulation 高压交流发电机定子棒绝缘中湿度传播试验
2007 Electrical Insulation Conference and Electrical Manufacturing Expo Pub Date : 2007-10-01 DOI: 10.1109/EEIC.2007.4562604
P. Schlupp, D. Vizireanu, C. Milleville, F. Chiodi, V. Prunier
{"title":"Experimentation on humidity propagation in high voltage alternator stator bar insulation","authors":"P. Schlupp, D. Vizireanu, C. Milleville, F. Chiodi, V. Prunier","doi":"10.1109/EEIC.2007.4562604","DOIUrl":"https://doi.org/10.1109/EEIC.2007.4562604","url":null,"abstract":"The goal of this article is to present the latest experimental results concerning the water propagation in the main insulation of bars of a turbo-generator. These experiments should show a correlation between measurement of the isolation resistance and the rate of humidity and to determine: on one hand, from a qualitatively point of view, how the humidity is propagated (in which direction) into the insulation material, and on the other hand, from a quantitatively point of view, the propagation speed and the level of uncertainty. The final goal is to provide to the end user, a powerful tool in order to make the right decision in case of insulation weakness detection due to a high rate of humidity.","PeriodicalId":152045,"journal":{"name":"2007 Electrical Insulation Conference and Electrical Manufacturing Expo","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132765323","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
Denoising of the neutral current using wavelet for diagnosis of the transformer 用小波对变压器中性点电流进行降噪
2007 Electrical Insulation Conference and Electrical Manufacturing Expo Pub Date : 2007-10-01 DOI: 10.1109/EEIC.2007.4562577
P. V. Kanaka Rao, B. Jaya Krishna, A. Bhoomaiah, B.P. Singh, M. Chandra Shekar, P. Appala Naidu
{"title":"Denoising of the neutral current using wavelet for diagnosis of the transformer","authors":"P. V. Kanaka Rao, B. Jaya Krishna, A. Bhoomaiah, B.P. Singh, M. Chandra Shekar, P. Appala Naidu","doi":"10.1109/EEIC.2007.4562577","DOIUrl":"https://doi.org/10.1109/EEIC.2007.4562577","url":null,"abstract":"Insulation failure within transformer winding is considered to be one of the most important causes of failure of the power transformer. Comparison of neutral currents at reduced and full voltages is an important criterion for detection of fault in the power transformer winding during impulse test. Any difference in wave shape of the recorded current and voltage signal shows the failure of transformer. In this paper, identification and separation of a noise signal from the main neutral current are carried out using wavelet technique. In order to carry out analysis faults are created in discs of the windings of a 61 MVA, 11.5/230 kV generator transformer at different locations. Neutral currents are recorded by applying low impulse voltage. Contribution of each frequency in time domain signal is calculated by Daubechies wavelet. The proposed method can be used for isolating the contribution due to any noise frequency in the waveform.","PeriodicalId":152045,"journal":{"name":"2007 Electrical Insulation Conference and Electrical Manufacturing Expo","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115613408","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
The use of iron-nickel and iron-cobalt alloys in electrical engineering, and especially for electrical motors 铁镍合金和铁钴合金在电气工程中的应用，特别是在电动机中的应用
2007 Electrical Insulation Conference and Electrical Manufacturing Expo Pub Date : 2007-10-01 DOI: 10.1109/EEIC.2007.4562649
B. Frédéric, W. Thierry, F. Herve
{"title":"The use of iron-nickel and iron-cobalt alloys in electrical engineering, and especially for electrical motors","authors":"B. Frédéric, W. Thierry, F. Herve","doi":"10.1109/EEIC.2007.4562649","DOIUrl":"https://doi.org/10.1109/EEIC.2007.4562649","url":null,"abstract":"Today, one of the most important challenges for electrical motors is increasing the efficiency to obtain more power with the same electrical energy consumed. The use of iron-nickel and iron-cobalt alloys can significantly reduce the magnetic losses, and then increase the efficiency. At the same time, electrical motors are increasing their rotating speed thanks to the progress made in power electronics. The supply to the motors is not only limited to a frequency of 50 or 60 Hz, but will now be hundreds of hertz. Due to this, the magnetic field applied to the material in the stator is a high frequency and then induces high magnetic losses. The use of iron-nickel alloy and iron-cobalt alloys can reduce significantly the magnetic losses The magnetic sensitivity of iron-nickel alloys can not be reached by any other alloy. An example of sensor is presented in this paper. Induction at saturation of iron-cobalt is the highest known. This parameter can be directly linked to the size of the magnetic device. Using iron-cobalt alloys allows a 30% volume reduction.","PeriodicalId":152045,"journal":{"name":"2007 Electrical Insulation Conference and Electrical Manufacturing Expo","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124381267","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
Supply base risk assessment and contingency planning in emerging markets 新兴市场的供应基础风险评估和应急计划
2007 Electrical Insulation Conference and Electrical Manufacturing Expo Pub Date : 2007-10-01 DOI: 10.1109/EEIC.2007.4562639
J. Patterson
{"title":"Supply base risk assessment and contingency planning in emerging markets","authors":"J. Patterson","doi":"10.1109/EEIC.2007.4562639","DOIUrl":"https://doi.org/10.1109/EEIC.2007.4562639","url":null,"abstract":"With the growing complexity of global sourcing coupled with significant cost reduction initiatives at the individual firm level, supply base managers now reach into emerging markets for the acquisition and procurement of goods and services. The question of managing the risks inherent in sourcing from emerging markets is twofold: 1) What are the common sources of risk? and 2) How can we manage them effectively? Risk is defined here as \"the magnitude of exposure to financial loss or operational disruption\" and stems from uncertainty in the emerging markets sourcing process. All risk must be evaluated relative to its potential cost exposure and the probability of occurrence. Several generally-accepted contingency management techniques are offered to help global supply base managers and strategic sourcing teams mitigate these potential losses and supply disruptions.","PeriodicalId":152045,"journal":{"name":"2007 Electrical Insulation Conference and Electrical Manufacturing Expo","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116365789","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
Sizing photovoltaic systems components for stand-alone operation 独立运行的光伏系统组件的尺寸
2007 Electrical Insulation Conference and Electrical Manufacturing Expo Pub Date : 2007-10-01 DOI: 10.1109/EEIC.2007.4562655
J. Masi, C. Nadeau, J. Smith
{"title":"Sizing photovoltaic systems components for stand-alone operation","authors":"J. Masi, C. Nadeau, J. Smith","doi":"10.1109/EEIC.2007.4562655","DOIUrl":"https://doi.org/10.1109/EEIC.2007.4562655","url":null,"abstract":"The practicality of using solar photovoltaic panels combined with batteries and controls to generate emergency power in Maine is presented. Solar power is becoming less costly and more available, making the design and fabrication of emergency power and lighting highly feasible. This paper discusses the sizing, design, construction, and testing of such a system. The distinctions between the total power available from the sun, the maximum theoretical power that can be extracted, and the actual power that is realized are discussed. Several manufacturers sell solar photovoltaic panels. The capabilities and costs for current systems are discussed. Advantages, disadvantages, and suggestions for improvement are presented.","PeriodicalId":152045,"journal":{"name":"2007 Electrical Insulation Conference and Electrical Manufacturing Expo","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124860869","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
Die-cast copper rotors as strategy for improving induction motor efficiency 压铸铜转子作为提高感应电机效率的策略
2007 Electrical Insulation Conference and Electrical Manufacturing Expo Pub Date : 2007-10-01 DOI: 10.1109/EEIC.2007.4562636
D. Peters, E. F. Brush, J. Kirtley
{"title":"Die-cast copper rotors as strategy for improving induction motor efficiency","authors":"D. Peters, E. F. Brush, J. Kirtley","doi":"10.1109/EEIC.2007.4562636","DOIUrl":"https://doi.org/10.1109/EEIC.2007.4562636","url":null,"abstract":"This paper reviews the advantages of substituting copper for aluminum in the rotor squirrel cage as a central strategy toward reaching substantially higher efficiency. Short die life has discouraged production of copper rotors, but recent development of a heated nickel-base alloy die technology has solved the manufacturing problem; this is briefly reviewed. Copper rotor high efficiency motors are now commercially available. Performance characteristics of example motors are presented and design modifications employed to optimally utilize the high conductivity copper are outlined. Weight and cost savings realized by European manufacturers with high efficiency copper rotor motors compared to aluminum rotor designs with the same efficiency and performance characteristics are discussed. Applications for these motors in defense systems are now being examined for both 60 and 400 Hz equipment. Induction motors with copper rotors for traction also appear to have real advantages. Use of this motor type in the series hybrid drive system of a heavy duty Marine Corp truck is reviewed.","PeriodicalId":152045,"journal":{"name":"2007 Electrical Insulation Conference and Electrical Manufacturing Expo","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128710236","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: 26
The importance of adhesion for electronic module encapsulation 附着力对电子模块封装的重要性
2007 Electrical Insulation Conference and Electrical Manufacturing Expo Pub Date : 2007-10-01 DOI: 10.1109/EEIC.2007.4562648
M. Rayadhyaksha, G. Sullivan
{"title":"The importance of adhesion for electronic module encapsulation","authors":"M. Rayadhyaksha, G. Sullivan","doi":"10.1109/EEIC.2007.4562648","DOIUrl":"https://doi.org/10.1109/EEIC.2007.4562648","url":null,"abstract":"Epoxy based systems are well suited as encapsulates fo a wide variety of electronic and electrical components because of their outstanding mechanical and electric properties as well as excellent thermal endurance and chemical resistance. In many of such applications, the components to be encapsulated are potted in thin- walled housings, typically injection molded from a variety of mineral filled thermoplastic materials. It is critical in such applications that the adhesive bond between the epoxy and thermoplastic remains intact throughout the life of the part, primarily to preclude catastrophic electrical failures but also to maintain mechanical integrity and to provide a seal from possible sources of contamination. This paper explores basic factors necessary for proper adhesion in such applications. A pull-out adhesion test is described that provides an excellent model for evaluating epoxy-based adhesive bonding that takes into account specific design and process conditions salient to most electronic and electrical encapsulating applications.","PeriodicalId":152045,"journal":{"name":"2007 Electrical Insulation Conference and Electrical Manufacturing Expo","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127948510","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
Accelerating aging of transmission line porcelain suspension insulators by autoclaving 高压灭菌加速输电线路悬瓷绝缘子老化
2007 Electrical Insulation Conference and Electrical Manufacturing Expo Pub Date : 2007-10-01 DOI: 10.1109/EEIC.2007.4562600
Se-Won Han, I. Choi, Dong-il Lee
{"title":"Accelerating aging of transmission line porcelain suspension insulators by autoclaving","authors":"Se-Won Han, I. Choi, Dong-il Lee","doi":"10.1109/EEIC.2007.4562600","DOIUrl":"https://doi.org/10.1109/EEIC.2007.4562600","url":null,"abstract":"Porcelain suspension insulators aged for 1, 5 and 10 years on Korean transmission lines and new insulators are tested for autoclave expansion. The compressive strength of the insulators aged in an autoclave with conditions of 250degC and at 20 atm for 30 minutes, was about 7.6 kgf/mm2, which is close to that measured on insulators aged for 10 years in the field. From simulation results, the cement displacement changed linearly with temperature. At a temperature of 200degC, the shear stress was approximately 7 kgf/mm2; a stress that is brought about by a 0.07% expansion of the cement. It is evident that the cement would fracture at a 0.07% expansion, because the cement has about 7 to 9 kgf/mm2 flexure strength. A turning point in the shear stress with mechanical load occurred at 0.02% cement expansion. From an analysis of the porcelain body it is shown that there is sufficient margin of strength to guard against fracture of the porcelain body even for a cement expansion more than 0.12%.","PeriodicalId":152045,"journal":{"name":"2007 Electrical Insulation Conference and Electrical Manufacturing Expo","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125351449","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
Fundamentals of and advances in production line winding testing for coil manufacturers 线圈制造商在生产线绕组测试的基本原理和进展
2007 Electrical Insulation Conference and Electrical Manufacturing Expo Pub Date : 2007-10-01 DOI: 10.1109/EEIC.2007.4562651
L. Keener
{"title":"Fundamentals of and advances in production line winding testing for coil manufacturers","authors":"L. Keener","doi":"10.1109/EEIC.2007.4562651","DOIUrl":"https://doi.org/10.1109/EEIC.2007.4562651","url":null,"abstract":"This paper discusses the three most common in-process electrical winding tests. These include the hipot, high voltage impulse and winding resistance tests. Then it discusses additional auxiliary tests which are commonly performed on windings such as inductance, rotation direction, magnet field mapping and partial discharge. Important parameters for properly conducting each of the tests in a production environment are mentioned. When alternative test and analysis methods exist, they are covered. The latest developments related to these tests are described. The paper concludes that with the combination of tests available to winding manufacturers today, the ability to test for high quality windings is the best it has ever been.","PeriodicalId":152045,"journal":{"name":"2007 Electrical Insulation Conference and Electrical Manufacturing Expo","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133949728","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信