Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826196
M. Winkeler
This paper focuses on the use of insulating varnishes and resins in electric motors. It examines various types of motors and the varnishes and resins used in those motors. Varnishes and resins are compared based on test results coupled with performance history.
{"title":"Varnish and resin usage with various motor constructions","authors":"M. Winkeler","doi":"10.1109/EEIC.1999.826196","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826196","url":null,"abstract":"This paper focuses on the use of insulating varnishes and resins in electric motors. It examines various types of motors and the varnishes and resins used in those motors. Varnishes and resins are compared based on test results coupled with performance history.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124327854","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}
Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826250
T. Y. Chuang, D. Lieu
Waveform optimization attempts to solve a constrained optimization problem for current waveforms that produce no torque ripple with minimum copper losses. In doing so, it must also solve the high velocity problem at limited voltage. This paper computes the maximum torque-speed profile achievable under such constraints, and it also demonstrates a fast numerical technique for solving waveforms that are smooth and roughly optimal.
{"title":"Optimized current waveforms for switched reluctance motors","authors":"T. Y. Chuang, D. Lieu","doi":"10.1109/EEIC.1999.826250","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826250","url":null,"abstract":"Waveform optimization attempts to solve a constrained optimization problem for current waveforms that produce no torque ripple with minimum copper losses. In doing so, it must also solve the high velocity problem at limited voltage. This paper computes the maximum torque-speed profile achievable under such constraints, and it also demonstrates a fast numerical technique for solving waveforms that are smooth and roughly optimal.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115378207","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}
Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826241
R. Kultrow
Epoxy based products have been used extensively over the past fifty years in a great variety of electrical and structural applications where they are acclaimed for their outstanding dielectric, mechanical and chemical resistance properties. Because of these and other attractive features, they are finding increased usage in high and medium voltage electrical apparatus that operate in severe environments, Such environments include those of extreme temperatures, in areas of high industrial pollution, in seacoast areas where there are high levels of humidity and salt and in GIS equipment where the insulation is subjected to continuous exposure to the effects of the insulating gas SF/sub 6/ and its possible breakdown products.
{"title":"Epoxy systems used for enhanced electrical performance in severe environments","authors":"R. Kultrow","doi":"10.1109/EEIC.1999.826241","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826241","url":null,"abstract":"Epoxy based products have been used extensively over the past fifty years in a great variety of electrical and structural applications where they are acclaimed for their outstanding dielectric, mechanical and chemical resistance properties. Because of these and other attractive features, they are finding increased usage in high and medium voltage electrical apparatus that operate in severe environments, Such environments include those of extreme temperatures, in areas of high industrial pollution, in seacoast areas where there are high levels of humidity and salt and in GIS equipment where the insulation is subjected to continuous exposure to the effects of the insulating gas SF/sub 6/ and its possible breakdown products.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128677919","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}
Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826226
D. E. Schump
Armature windings present a special challenge for testing. These windings cover a very broad range of resistance and inductance. In addition, the many connections to the commutator must be carefully tested. As others have shown, fusing of magnet wire to commutators is a difficult task. Testing to assure the quality of the joint is discussed in this paper as "weld" testing.
{"title":"Test methods for armature windings","authors":"D. E. Schump","doi":"10.1109/EEIC.1999.826226","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826226","url":null,"abstract":"Armature windings present a special challenge for testing. These windings cover a very broad range of resistance and inductance. In addition, the many connections to the commutator must be carefully tested. As others have shown, fusing of magnet wire to commutators is a difficult task. Testing to assure the quality of the joint is discussed in this paper as \"weld\" testing.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128998352","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}
Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826265
V. Tandon, H. El-Mounayri
Integrated CAD/CAM or VPD (virtual product design) is a concept that can optimize an organization's business edge, if properly implemented, It provides a unique process based approach and enables a seamless digital design-through-manufacture environment. The elements and concepts that make it possible are presented in the general context of CAD/CAM theory and then discussed in the particular context of a very popular CAD/CAM system: Pro/ENGINEER.
{"title":"Aspects of integrated CAD/CAM for advanced manufacturing","authors":"V. Tandon, H. El-Mounayri","doi":"10.1109/EEIC.1999.826265","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826265","url":null,"abstract":"Integrated CAD/CAM or VPD (virtual product design) is a concept that can optimize an organization's business edge, if properly implemented, It provides a unique process based approach and enables a seamless digital design-through-manufacture environment. The elements and concepts that make it possible are presented in the general context of CAD/CAM theory and then discussed in the particular context of a very popular CAD/CAM system: Pro/ENGINEER.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128592181","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}
Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826180
D. F. Bardoliwalla
Polyester resins as a class are more commonly used as electrical insulating resins than any other resins, including epoxies and urethanes. In general, they give high bond strength at elevated temperatures, are lower in cost (compared to epoxies), and offer easier processing. Discussion is provided on the development of new polyester chemistry for electrical insulating resins that have high flash point, low volatile emissions, improved health and safety factors, superior electrical and mechanical properties and enhanced stability.
{"title":"Low emission, high flash point solventless polyester resins","authors":"D. F. Bardoliwalla","doi":"10.1109/EEIC.1999.826180","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826180","url":null,"abstract":"Polyester resins as a class are more commonly used as electrical insulating resins than any other resins, including epoxies and urethanes. In general, they give high bond strength at elevated temperatures, are lower in cost (compared to epoxies), and offer easier processing. Discussion is provided on the development of new polyester chemistry for electrical insulating resins that have high flash point, low volatile emissions, improved health and safety factors, superior electrical and mechanical properties and enhanced stability.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116517664","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}
Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826203
H. Sedding, B. Gupta, I. Culbert, H. Dhirani, G. Klempner, G. Haines
Forty five years experience with partial discharge (PD) measurements in one utility is reviewed, Examples of application on large steam turbine generators and hydroelectric generators are given. Overall, the use of PD measurements, when properly applied and interpreted in conjunction with other machine-related data has proved invaluable. However, the myriad factors used in making maintenance decisions based on PD data, represent a significant challenge for automated diagnostic systems.
{"title":"Experience with partial discharge measurements on rotating machines in Ontario Hydro","authors":"H. Sedding, B. Gupta, I. Culbert, H. Dhirani, G. Klempner, G. Haines","doi":"10.1109/EEIC.1999.826203","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826203","url":null,"abstract":"Forty five years experience with partial discharge (PD) measurements in one utility is reviewed, Examples of application on large steam turbine generators and hydroelectric generators are given. Overall, the use of PD measurements, when properly applied and interpreted in conjunction with other machine-related data has proved invaluable. However, the myriad factors used in making maintenance decisions based on PD data, represent a significant challenge for automated diagnostic systems.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128092026","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}
Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826259
H. Kuroki
Typically rectangular magnet wires have been used for conductors larger than approx. 2 sq.mm. Fine rectangular wires showed poor performance, because of difficulties in building uniform insulation on fine rectangular conductors. Conventionally, round magnet wires were used for fine sizes. Mitsubishi Cable Industries, Ltd., have developed MEDIS (Mitsubishi Electro-Deposition Insulating System) which is a very unique system for producing magnet wires. We developed a fine rectangular magnet wire ("SX WIRE") with very good performance through this MEDIS process. We were also successful in making an ultra thin insulation with very good uniformity. The following issues are reported in this paper: fine rectangular magnet wires by MEDIS; ultra thin insulation (min. 0.001 mm) rectangular magnet wires; characteristics of ultra thin insulation wires; advanced MEDIS process for fine rectangular magnet wires; and applications and advantages of applied devices.
{"title":"Fine rectangular magnet wires with ultra thin insulation and its applications","authors":"H. Kuroki","doi":"10.1109/EEIC.1999.826259","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826259","url":null,"abstract":"Typically rectangular magnet wires have been used for conductors larger than approx. 2 sq.mm. Fine rectangular wires showed poor performance, because of difficulties in building uniform insulation on fine rectangular conductors. Conventionally, round magnet wires were used for fine sizes. Mitsubishi Cable Industries, Ltd., have developed MEDIS (Mitsubishi Electro-Deposition Insulating System) which is a very unique system for producing magnet wires. We developed a fine rectangular magnet wire (\"SX WIRE\") with very good performance through this MEDIS process. We were also successful in making an ultra thin insulation with very good uniformity. The following issues are reported in this paper: fine rectangular magnet wires by MEDIS; ultra thin insulation (min. 0.001 mm) rectangular magnet wires; characteristics of ultra thin insulation wires; advanced MEDIS process for fine rectangular magnet wires; and applications and advantages of applied devices.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127212483","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}
Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826256
N. Swain, R. Nagel
A new high temperature, self-bonding magnet wire has been developed, with greatly improved bond strength retention at temperatures in excess of 180/spl deg/C. This new development is the first self-bonding magnet wire to be suitable for use in armatures, rotors and high temperature applications. In addition to its improved thermal properties, this new wire also exhibits excellent chemical resistance, particularly to diesel and gasoline fuels, making it suitable for specialized automotive applications.
{"title":"New high temperature self-bonding magnet wire","authors":"N. Swain, R. Nagel","doi":"10.1109/EEIC.1999.826256","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826256","url":null,"abstract":"A new high temperature, self-bonding magnet wire has been developed, with greatly improved bond strength retention at temperatures in excess of 180/spl deg/C. This new development is the first self-bonding magnet wire to be suitable for use in armatures, rotors and high temperature applications. In addition to its improved thermal properties, this new wire also exhibits excellent chemical resistance, particularly to diesel and gasoline fuels, making it suitable for specialized automotive applications.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"92 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113970483","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}
Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826214
D.J. Nicol
Knowing the physical, electrical and temperature limitations of Micrometals Iron Powder core materials reduces the development time and overall cost. This paper focuses on low cost toroid and E-core designs, thermal aging and available design tools to reduce or eliminate the "cut and try" development cycle. Applications to buck and boost inductors are discussed.
{"title":"Plain and simple design details regarding the application of iron powder cores","authors":"D.J. Nicol","doi":"10.1109/EEIC.1999.826214","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826214","url":null,"abstract":"Knowing the physical, electrical and temperature limitations of Micrometals Iron Powder core materials reduces the development time and overall cost. This paper focuses on low cost toroid and E-core designs, thermal aging and available design tools to reduce or eliminate the \"cut and try\" development cycle. Applications to buck and boost inductors are discussed.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115757913","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}
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