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2007 Electrical Insulation Conference and Electrical Manufacturing Expo最新文献

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Question: Can you provide your customers with the efficiency of your induction motor models given only an input current value? The answer: Yes 问:你能向你的客户提供只给定输入电流值的感应电机模型的效率吗?答案是肯定的
2007 Electrical Insulation Conference and Electrical Manufacturing Expo Pub Date : 2007-10-01 DOI: 10.1109/EEIC.2007.4562658
D. Skaar
{"title":"Question: Can you provide your customers with the efficiency of your induction motor models given only an input current value? The answer: Yes","authors":"D. Skaar","doi":"10.1109/EEIC.2007.4562658","DOIUrl":"https://doi.org/10.1109/EEIC.2007.4562658","url":null,"abstract":"This paper describes a simple graphical method for the finding a reasonably-accurate value for the efficiency of any balanced multiphase motor for any arbitrarily-selected value of operating current. The method assumes the following routine conditions: the motor operates at rated voltage and frequency; the stray load loss and the rotor core loss are negligible; the no load speed of the motor is known along with the five Steinmetz Model element values; and that the only model element that varies under normal operating conditions is the reflected rotor resistance, r2/s. The method makes use of a Unit Circle that has been developed from the forward impedance of the traditional six-element-per-phase model illustrated in IEEE Standard 112. This paper elaborates upon a specific facet of the general analyses that have been addressed in previous papers written by the writer; this facet should be of particular interest to motor manufacturing personnel who must provide technical support for their customers.","PeriodicalId":152045,"journal":{"name":"2007 Electrical Insulation Conference and Electrical Manufacturing Expo","volume":"26 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":"134539567","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
optimizing validation of voltage and time for VLF (0.1 Hz) voltage testing on-site 优化VLF (0.1 Hz)现场电压测试的电压和时间验证
2007 Electrical Insulation Conference and Electrical Manufacturing Expo Pub Date : 2007-10-01 DOI: 10.1109/EEIC.2007.4562579
Junhua Luo, Zhuochun Zhou, Li Zhang
{"title":"optimizing validation of voltage and time for VLF (0.1 Hz) voltage testing on-site","authors":"Junhua Luo, Zhuochun Zhou, Li Zhang","doi":"10.1109/EEIC.2007.4562579","DOIUrl":"https://doi.org/10.1109/EEIC.2007.4562579","url":null,"abstract":"Very low frequency (VLF) voltage test on-site has been applied widely for evaluating the status of installation and operation of medium voltage power cable lines. For optimizing and validating the test voltage and test time, the validity, equivalency and relationship of test voltage and test time of VLF voltage test is discussed and analyzed in this paper. The results of research and optimization in the paper have proved and verified that the VLF voltage test method of 30U0 test voltage and 40 min test time is a better choice for checking and verifying the safe operational life of power cable lines, and 2.S U0/25 min or 3U0/25 min is suggested for verifying the safe operational life of aged cable line that has been in service more than 7 years. VLF voltage test may establish the present status of dielectric quality of power cable lines.","PeriodicalId":152045,"journal":{"name":"2007 Electrical Insulation Conference and Electrical Manufacturing Expo","volume":"73 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":"117325145","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
AC breakdown voltage measurement of a fluorocarbon in gaseous state two-phase-flow state and liquid state 一种氟碳化合物气态、两相流和液态交流击穿电压的测量
2007 Electrical Insulation Conference and Electrical Manufacturing Expo Pub Date : 2007-10-01 DOI: 10.1109/EEIC.2007.4562595
Xin Wang, Wenhao Niu, H. Guo, Guoqiang Zhang
{"title":"AC breakdown voltage measurement of a fluorocarbon in gaseous state two-phase-flow state and liquid state","authors":"Xin Wang, Wenhao Niu, H. Guo, Guoqiang Zhang","doi":"10.1109/EEIC.2007.4562595","DOIUrl":"https://doi.org/10.1109/EEIC.2007.4562595","url":null,"abstract":"The AC breakdown voltages of a fluorocarbon were measured under three states, including in gaseous state, in boiling two phase flow state and in liquid state. Because the insulating medium in two phase flow could be used in some electrical apparatus, the author measured the breakdown voltage of two phase flow under various pressures in the vessel, various water contents in the coolant. The results would be used for designing and manufacturing of electrical apparatus.","PeriodicalId":152045,"journal":{"name":"2007 Electrical Insulation Conference and Electrical Manufacturing Expo","volume":"2 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":"128926570","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
Audio spectrum analysis of EMI patterns 音频频谱分析的电磁干扰模式
2007 Electrical Insulation Conference and Electrical Manufacturing Expo Pub Date : 2007-10-01 DOI: 10.1109/EEIC.2007.4562584
J. Timperley
{"title":"Audio spectrum analysis of EMI patterns","authors":"J. Timperley","doi":"10.1109/EEIC.2007.4562584","DOIUrl":"https://doi.org/10.1109/EEIC.2007.4562584","url":null,"abstract":"An important aspect of EMI (electromagnetic interference) diagnostics of high voltage power systems is the recognition and identification of various video and audio patterns present in the radio frequencies generated by partial discharges and arcing activity. This paper presents the first audio frequency analysis of several common sources of EMI.","PeriodicalId":152045,"journal":{"name":"2007 Electrical Insulation Conference and Electrical Manufacturing Expo","volume":"24 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":"132292456","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
A survey of China 中国概况
2007 Electrical Insulation Conference and Electrical Manufacturing Expo Pub Date : 2007-10-01 DOI: 10.1109/EEIC.2007.4562638
W. Koch
{"title":"A survey of China","authors":"W. Koch","doi":"10.1109/EEIC.2007.4562638","DOIUrl":"https://doi.org/10.1109/EEIC.2007.4562638","url":null,"abstract":"China's role in the world economy is an increasing source of attention or concern, depending upon one's perspective. Current evidence indicates that China will continue to be an engine of growth for Southeast Asian economies, drawing in large volumes of imports across a range of inputs. In the near term the United States will remain a major destination for Chinese exports of finished products, although imports of high-tech goods from the U.S. are increasing, with foreign invested enterprises (FIEs) in the manufacturing sector the main producers. While China's comparative advantage in low labor costs will persist, other factors will increase in importance, making the business environment more competitive. Specifically, structural changes in the economy, gradual movement up the production value chain, and government policy to increase human capital, develop the interior of the - country, and decrease corruption, will increase growth in the domestic economy. Finally, the financial sector shows increasing flexibility, which lowers exposure to external shocks as fiscal and monetary policy become more effective and the country moves closer to a market economy.","PeriodicalId":152045,"journal":{"name":"2007 Electrical Insulation Conference and Electrical Manufacturing Expo","volume":"19 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":"115286173","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: 23
Study of the base material and application method on the properties of banding tape 基材及其应用方法对胶带性能的影响
2007 Electrical Insulation Conference and Electrical Manufacturing Expo Pub Date : 2007-10-01 DOI: 10.1109/EEIC.2007.4562622
N. Frost, J. Coulter
{"title":"Study of the base material and application method on the properties of banding tape","authors":"N. Frost, J. Coulter","doi":"10.1109/EEIC.2007.4562622","DOIUrl":"https://doi.org/10.1109/EEIC.2007.4562622","url":null,"abstract":"Banding tapes are utilized to hold rotating components in place for the life of the motor. The method of application and components of banding tapes influence the final performance of the band. This paper reports findings on the influence of yarn types and hot versus cold banding on the tensile strength and moisture resistance properties of the completed cured bands.","PeriodicalId":152045,"journal":{"name":"2007 Electrical Insulation Conference and Electrical Manufacturing Expo","volume":"5 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":"123687328","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
Measurements of polarization/depolarization currents for modern epoxy-mica bars in different conditions 现代环氧云母棒材在不同条件下的极化/去极化电流测量
2007 Electrical Insulation Conference and Electrical Manufacturing Expo Pub Date : 2007-10-01 DOI: 10.1109/EEIC.2007.4562617
É. David, L. Lamarre, D. N. Nguyen
{"title":"Measurements of polarization/depolarization currents for modern epoxy-mica bars in different conditions","authors":"É. David, L. Lamarre, D. N. Nguyen","doi":"10.1109/EEIC.2007.4562617","DOIUrl":"https://doi.org/10.1109/EEIC.2007.4562617","url":null,"abstract":"DC polarization and depolarization current (PDC) measurements are commonly used in the field in order to assess the quality of stator winding insulating systems of large synchronous rotating machines. Results from the measurement of polarization/depolarization currents on modern epoxy mica bars in various conditions are presented in this paper. The measurements were conducted for DC voltages ranging from 1 to 20 kV. Unaged epoxy-mica spare bar with either iron oxide or silicon carbide stress grading coatings were compared in laboratory with bars of similar technology after aging and with bars with incomplete curing. The use of a two active electrodes set up with a guarded electrode allowed separating the contribution of the ground wall insulation to the measured current from the contribution of the end winding portions of the bars.","PeriodicalId":152045,"journal":{"name":"2007 Electrical Insulation Conference and Electrical Manufacturing Expo","volume":"88 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":"121868975","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: 12
Utilizing infrared and power quality techniques to diagnose and re-commission 33 old power, lighting & receptacles panels and distribution transformers at the New Jersey international & bulk mail center 利用红外和电能质量技术诊断和重新调试新泽西国际和大宗邮件中心的33个旧电源、照明和插座面板和配电变压器
2007 Electrical Insulation Conference and Electrical Manufacturing Expo Pub Date : 2007-10-01 DOI: 10.1109/EEIC.2007.4562575
J.C. Pearson, D. Pandya
{"title":"Utilizing infrared and power quality techniques to diagnose and re-commission 33 old power, lighting & receptacles panels and distribution transformers at the New Jersey international & bulk mail center","authors":"J.C. Pearson, D. Pandya","doi":"10.1109/EEIC.2007.4562575","DOIUrl":"https://doi.org/10.1109/EEIC.2007.4562575","url":null,"abstract":"This case study details electrical safety items and power quality assessment in conjunction with an IR survey of 285 panels and 85 transformers that was conducted in December 2004 and January 2005. The assessments were extremely useful in avoiding potential incidents and costly equipment shutdowns. This survey highlighted some of critical NEC deficiencies which were corrected immediately. Approximately 85 % of these panels and transformers displayed minor to major NEC deficiencies, and 12 % of these panels and transformers showed unusual temperature abnormalities. At present, we are using our maintenance resources to rectify the remaining deficiencies. Initially, we employed a licensed electrical inspector who conducted a series of site inspections and classroom training. The training included a basic overview of new NEC codes changes, and how to enhance skill sets of our technicians that were assigned to rectify the deficiencies. We were concerned regarding the overall conditions and safety of our 33 year old 480-277/208-120V power, lighting, receptacle panels, and distributions transformers. In 1999-2000, our preliminary survey found that - 480/277V -208/120V power, lighting and receptacle panels and distributions transformers needed thorough inspection and meticulous clean-up. We investigated upcoming IR technology and found out that the infrared camera could be a very useful tool in diagnosing any temperature abnormalities as result of loose terminations, overloading or questionable design and /or installation of any electrical apparatus.","PeriodicalId":152045,"journal":{"name":"2007 Electrical Insulation Conference and Electrical Manufacturing Expo","volume":"4 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131438206","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
Electrical insulation challenges for rotating machines used on future electric ships 未来电动船舶上使用的旋转机器面临的电绝缘挑战
2007 Electrical Insulation Conference and Electrical Manufacturing Expo Pub Date : 2007-10-01 DOI: 10.1109/EEIC.2007.4562627
R. Hebner
{"title":"Electrical insulation challenges for rotating machines used on future electric ships","authors":"R. Hebner","doi":"10.1109/EEIC.2007.4562627","DOIUrl":"https://doi.org/10.1109/EEIC.2007.4562627","url":null,"abstract":"The electrification of ships coupled with a demand for very high power and energy density raises challenges for insulation system designers for this market. The physical reason the design is challenging is that the electrical, mechanical, and thermal environment on a ship is sufficiently far from the land-based environment that key parts of the data and experience base needed for insulation system design do not exist.","PeriodicalId":152045,"journal":{"name":"2007 Electrical Insulation Conference and Electrical Manufacturing Expo","volume":"432 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":"123149170","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
Electric motor and generator manufacturing myths 电动机和发电机制造神话
2007 Electrical Insulation Conference and Electrical Manufacturing Expo Pub Date : 2007-10-01 DOI: 10.1109/EEIC.2007.4562652
P. Morreale
{"title":"Electric motor and generator manufacturing myths","authors":"P. Morreale","doi":"10.1109/EEIC.2007.4562652","DOIUrl":"https://doi.org/10.1109/EEIC.2007.4562652","url":null,"abstract":"Flexible automation is an important factor in a company's way to diversify product manufacturing, increase quality and reduce the direct labor content over a wide range of motors and generators.","PeriodicalId":152045,"journal":{"name":"2007 Electrical Insulation Conference and Electrical Manufacturing Expo","volume":"30 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":"120956649","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
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