Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826247
D. Skaar
This paper describes a graphical method that may be used to predict the performance characteristics of an induction machine operating over a wide range of running conditions. Given the element values of the model to be analyzed and no load speed, then knowing only the magnitude of the phase current or the rotational speed of a machine, one can readily determine other operating characteristics with minimal computational complexity.
{"title":"Predicting induction motor performance using a unit circle","authors":"D. Skaar","doi":"10.1109/EEIC.1999.826247","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826247","url":null,"abstract":"This paper describes a graphical method that may be used to predict the performance characteristics of an induction machine operating over a wide range of running conditions. Given the element values of the model to be analyzed and no load speed, then knowing only the magnitude of the phase current or the rotational speed of a machine, one can readily determine other operating characteristics with minimal computational complexity.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"31 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":"133734420","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.1999.826287
R. Kurz
This paper discusses a technique for retarding moisture absorption by pressboard cylinders, used as winding tubes for transformer coils. The PARA-SEAL process involves treating the pressboard cylinders with paraffin wax. Since moisture absorption is markedly reduced, the cylinders do not grow and, therefore, maintain their as manufactured dimensions. The cylinders can then be used to wind transformer coils as received without redrying. This saves both process time and the associated costs since the cylinders can go directly to the coil winding machine from the receiving floor (outside vendor) or tube manufacturing section (in-house production). This benefit is especially favored with the 'just in time' concept of manufacture.
{"title":"Method to retard moisture absorption in pressboard structures","authors":"R. Kurz","doi":"10.1109/EEIC.1999.826287","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826287","url":null,"abstract":"This paper discusses a technique for retarding moisture absorption by pressboard cylinders, used as winding tubes for transformer coils. The PARA-SEAL process involves treating the pressboard cylinders with paraffin wax. Since moisture absorption is markedly reduced, the cylinders do not grow and, therefore, maintain their as manufactured dimensions. The cylinders can then be used to wind transformer coils as received without redrying. This saves both process time and the associated costs since the cylinders can go directly to the coil winding machine from the receiving floor (outside vendor) or tube manufacturing section (in-house production). This benefit is especially favored with the 'just in time' concept of manufacture.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"25 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":"131552261","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.1999.826194
T. Lemley
There are many individuals engaged in the manufacture of electric motors that do not possess a formal college based engineering education. These individuals have worked in the industry for many years and have pragmatically gained their skills through experiences they have encountered on the manufacturing floor. This paper has been written to provide this group of individuals with an elementary understanding of the most basic electrical engineering concepts required to facilitate the motor manufacturing process. The paper uses a practical approach to the presentation of electrical engineering concepts rather than a theoretical approach. These individuals should be able to utilize these concepts to better perform their daily duties.
{"title":"Basic electrical engineering for motor manufacturing","authors":"T. Lemley","doi":"10.1109/EEIC.1999.826194","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826194","url":null,"abstract":"There are many individuals engaged in the manufacture of electric motors that do not possess a formal college based engineering education. These individuals have worked in the industry for many years and have pragmatically gained their skills through experiences they have encountered on the manufacturing floor. This paper has been written to provide this group of individuals with an elementary understanding of the most basic electrical engineering concepts required to facilitate the motor manufacturing process. The paper uses a practical approach to the presentation of electrical engineering concepts rather than a theoretical approach. These individuals should be able to utilize these concepts to better perform their daily duties.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"7 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":"126622872","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.1999.826211
T. Weiss
This paper discusses the development of a second generation of the "heatless chemical cure process" used in the manufacture of domestic appliance motor windings. The advantages of the process as compared with conventional processes are documented.
{"title":"Heatless resin coatings for appliance motor windings","authors":"T. Weiss","doi":"10.1109/EEIC.1999.826211","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826211","url":null,"abstract":"This paper discusses the development of a second generation of the \"heatless chemical cure process\" used in the manufacture of domestic appliance motor windings. The advantages of the process as compared with conventional processes are documented.","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":"123652286","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.1999.826263
M. Hoof, R. Patsch, Bernd Freisleben
A new neural network classifier is presented that was designed to optimize the recognition of partial discharge patterns. PD patterns resulting from various model defects are used to investigate the performance of the classifier. The classification results are compared with results obtained by a neural backpropagation network. It is shown that the classification performance can be improved when applying a suitable PD parameter, different from those commonly used. The results indicate that the new tool presented here is able to overcome typical problems inherent in most neural network based PD pattern classification approaches.
{"title":"GNC-network: a new tool for partial discharge pattern classification","authors":"M. Hoof, R. Patsch, Bernd Freisleben","doi":"10.1109/EEIC.1999.826263","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826263","url":null,"abstract":"A new neural network classifier is presented that was designed to optimize the recognition of partial discharge patterns. PD patterns resulting from various model defects are used to investigate the performance of the classifier. The classification results are compared with results obtained by a neural backpropagation network. It is shown that the classification performance can be improved when applying a suitable PD parameter, different from those commonly used. The results indicate that the new tool presented here is able to overcome typical problems inherent in most neural network based PD pattern classification approaches.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"46 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":"124859060","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.1999.826296
M.A. Swihart
This review of planar ferrites discusses issues relevant to the magnetics designer. These include standard sizes and shapes; conductor types; material selection; power handling; gapping; assembly; design hazards; prototypes development; core manufacturing; and special applications.
{"title":"Designing with planar ferrite cores","authors":"M.A. Swihart","doi":"10.1109/EEIC.1999.826296","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826296","url":null,"abstract":"This review of planar ferrites discusses issues relevant to the magnetics designer. These include standard sizes and shapes; conductor types; material selection; power handling; gapping; assembly; design hazards; prototypes development; core manufacturing; and special applications.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"11 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":"127868973","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.1999.826266
K. T. Lim, H. El-Mounayri
This paper focuses on a geometric modeling simulation using a commercially available CAD/CAM system for a virtual manufacturing environment. This CAD/CAM integrated geometric modeler for milling process simulation can operate as an off-line simulator and its offers accurate and practical solutions to the preprocess scheduling of the cutting conditions. This system can be used for machining process simulation, verification and optimization of NC codes in a virtual manufacturing environment. Finally, optimized cutting parameters can be generated to the actual machining process, thus improving on the accuracy, efficiency, and productivity in the manufacturing industry.
{"title":"CAD/CAM-based geometric modeling simulation for virtual manufacturing","authors":"K. T. Lim, H. El-Mounayri","doi":"10.1109/EEIC.1999.826266","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826266","url":null,"abstract":"This paper focuses on a geometric modeling simulation using a commercially available CAD/CAM system for a virtual manufacturing environment. This CAD/CAM integrated geometric modeler for milling process simulation can operate as an off-line simulator and its offers accurate and practical solutions to the preprocess scheduling of the cutting conditions. This system can be used for machining process simulation, verification and optimization of NC codes in a virtual manufacturing environment. Finally, optimized cutting parameters can be generated to the actual machining process, thus improving on the accuracy, efficiency, and productivity in the manufacturing industry.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"5 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":"130282612","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.1999.826204
T. Tsurimoto, K. Itoh, Y. Kaneda, A. Sumida, S. Kuroki, T. Ohsawa, H. Tanaka
A new partial discharge (PD) monitor has been developed. It continuously monitors the electrical condition of stator winding insulation of turbine generators in service. Various turbine generators, such as those having large PD activity and load dependent PD, were measured.
{"title":"Development of partial discharge monitor for turbine generators","authors":"T. Tsurimoto, K. Itoh, Y. Kaneda, A. Sumida, S. Kuroki, T. Ohsawa, H. Tanaka","doi":"10.1109/EEIC.1999.826204","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826204","url":null,"abstract":"A new partial discharge (PD) monitor has been developed. It continuously monitors the electrical condition of stator winding insulation of turbine generators in service. Various turbine generators, such as those having large PD activity and load dependent PD, were measured.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"15 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":"122553359","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.1999.826276
L. Varatharasa, S. Kolla
This paper presents a method to simulate three-phase induction motor performance during faults. The three-phase induction motor voltage and current relations are represented by an equivalent two-phase machine using D-Q transformation. This results in a set of five first-order nonlinear differential equations in terms of motor resistances, inductances, voltages, currents, speed and load. A C-program is developed to solve these equations. The program uses a Runga-Kutta numerical approximation method. The method is applied to a 2.2 kW motor model. Simulated voltages and currents obtained during different faults are reported in the paper.
{"title":"Simulation of three-phase induction motor performance during faults","authors":"L. Varatharasa, S. Kolla","doi":"10.1109/EEIC.1999.826276","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826276","url":null,"abstract":"This paper presents a method to simulate three-phase induction motor performance during faults. The three-phase induction motor voltage and current relations are represented by an equivalent two-phase machine using D-Q transformation. This results in a set of five first-order nonlinear differential equations in terms of motor resistances, inductances, voltages, currents, speed and load. A C-program is developed to solve these equations. The program uses a Runga-Kutta numerical approximation method. The method is applied to a 2.2 kW motor model. Simulated voltages and currents obtained during different faults are reported in the paper.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"41 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":"124572027","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.1999.826198
N. Swain
The chairman's report describes all activities undertaken by the NEMA Magnet Wire Committee since the 1997 EIC Conference. The report covers changes made to the NEMA MW 1000-1997 standard for magnet wire, as well as describing work that has validated current test procedures and requirements. Details of work currently underway, including activities such as those to make the standard more readily available and to harmonize with other standards are also provided.
{"title":"NEMA Magnet Wire Technical Committee chairman's report","authors":"N. Swain","doi":"10.1109/EEIC.1999.826198","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826198","url":null,"abstract":"The chairman's report describes all activities undertaken by the NEMA Magnet Wire Committee since the 1997 EIC Conference. The report covers changes made to the NEMA MW 1000-1997 standard for magnet wire, as well as describing work that has validated current test procedures and requirements. Details of work currently underway, including activities such as those to make the standard more readily available and to harmonize with other standards are also provided.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"54 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":"124617993","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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