Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826275
E. J. Thomas, P. Sauer
This paper describes the use of computer simulation to control an induction motor with a variable speed drive system to emulate an internal combustion engine (ICE). The objective is to make the dynamics of the motor identical to the dynamics of an ICE when used with a generic hydraulic test bed.
{"title":"Engine-simulation control of an induction motor","authors":"E. J. Thomas, P. Sauer","doi":"10.1109/EEIC.1999.826275","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826275","url":null,"abstract":"This paper describes the use of computer simulation to control an induction motor with a variable speed drive system to emulate an internal combustion engine (ICE). The objective is to make the dynamics of the motor identical to the dynamics of an ICE when used with a generic hydraulic test bed.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"13 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":"121833382","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.1999.826216
K. S. Medinger
High voltage encapsulants are used to protect electrical components from environmental damage and to provide the necessary mechanical strength and the electrical insulation to enable the device to function. This paper discusses both epoxy and urethane encapsulants. First, typical formulations are addressed. Then their properties during the gel stage are discussed. Finally, the encapsulant's properties in the cured state are discussed.
{"title":"High voltage encapsulants: uses and properties","authors":"K. S. Medinger","doi":"10.1109/EEIC.1999.826216","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826216","url":null,"abstract":"High voltage encapsulants are used to protect electrical components from environmental damage and to provide the necessary mechanical strength and the electrical insulation to enable the device to function. This paper discusses both epoxy and urethane encapsulants. First, typical formulations are addressed. Then their properties during the gel stage are discussed. Finally, the encapsulant's properties in the cured state are discussed.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"104 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":"122404456","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.1999.826215
J. W. Mueller
This paper reports research into characteristics of six different high temperature insulations using AWG 44 heavy build magnet wire. These test results are compared to NEMA magnet wire specifications to establish its quality. The test procedure is outlined and a discussion of high voltage testing at elevated temperatures follows. The objective is to find meaningful selection criteria for fine magnet wire for high voltage applications. The results were surprising with practically no correlation between testing at elevated temperatures and the thermal index of the different magnet wire insulation material.
{"title":"Fine magnet wire for high temperature and high voltage applications","authors":"J. W. Mueller","doi":"10.1109/EEIC.1999.826215","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826215","url":null,"abstract":"This paper reports research into characteristics of six different high temperature insulations using AWG 44 heavy build magnet wire. These test results are compared to NEMA magnet wire specifications to establish its quality. The test procedure is outlined and a discussion of high voltage testing at elevated temperatures follows. The objective is to find meaningful selection criteria for fine magnet wire for high voltage applications. The results were surprising with practically no correlation between testing at elevated temperatures and the thermal index of the different magnet wire insulation material.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"9 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":"133697697","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.1999.826285
Yu.P. Aksyonov, A. Golubev, A. Muchortov, V. Rodionov, V. Minein, B. Romanov, C. Churtin, A. Ignatushin
Experience accumulated from online and offline diagnostics and nondestructive tests to reliably determine the condition of service-aged HV electrical equipment are discussed. Under test were: switchgear; power transformers; underground transmission lines; metalclad substations; and rotating machines. Methods for assessing the condition of their electrical insulation systems included: partial discharge activity tests and complex conductivity measurements; infrared thermography; dissolved gas analysis; and dissipation-factor measurements applied to current transformers and bushings.
{"title":"On-line a off-line diagnostics for power station HV equipment","authors":"Yu.P. Aksyonov, A. Golubev, A. Muchortov, V. Rodionov, V. Minein, B. Romanov, C. Churtin, A. Ignatushin","doi":"10.1109/EEIC.1999.826285","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826285","url":null,"abstract":"Experience accumulated from online and offline diagnostics and nondestructive tests to reliably determine the condition of service-aged HV electrical equipment are discussed. Under test were: switchgear; power transformers; underground transmission lines; metalclad substations; and rotating machines. Methods for assessing the condition of their electrical insulation systems included: partial discharge activity tests and complex conductivity measurements; infrared thermography; dissolved gas analysis; and dissipation-factor measurements applied to current transformers and bushings.","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":"133125896","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.1999.826248
B. K. Fussell, D. R. James, S. R. Prina
This paper describes a methodology to design slotless linear motors through use of a finite element database. Simple lumped parameter models are found inadequate to describe the general flux path of the motor. The database is used in an iterative design program to investigate a host of potential designs.
{"title":"Slotless linear motor design","authors":"B. K. Fussell, D. R. James, S. R. Prina","doi":"10.1109/EEIC.1999.826248","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826248","url":null,"abstract":"This paper describes a methodology to design slotless linear motors through use of a finite element database. Simple lumped parameter models are found inadequate to describe the general flux path of the motor. The database is used in an iterative design program to investigate a host of potential designs.","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":"130344683","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.1999.826182
R. Carratura, E. Kifer
In 1997, a new copolymer technology, utilized in the formulation of a family of electrical varnishes, was introduced. Laboratory test results were utilized to illustrate the superior performance characteristics of the new technology. A comparison was made to typical polyester and epoxy varnishes through performance results in a series of benchmark tests. The purpose of this paper is to provide a technology update based on information garnered through two years of field testing in a variety of end use applications.
{"title":"Copolymer varnish. II. Application test results","authors":"R. Carratura, E. Kifer","doi":"10.1109/EEIC.1999.826182","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826182","url":null,"abstract":"In 1997, a new copolymer technology, utilized in the formulation of a family of electrical varnishes, was introduced. Laboratory test results were utilized to illustrate the superior performance characteristics of the new technology. A comparison was made to typical polyester and epoxy varnishes through performance results in a series of benchmark tests. The purpose of this paper is to provide a technology update based on information garnered through two years of field testing in a variety of end use applications.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"163 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":"123396498","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.1999.826173
H. El-Mounayri, Jiyu Zhang, Jie Chen
A PDM-based system for manufacturing process analysis and optimization is presented in this paper. The system consists of a standard (commercial) CAD/CAE/CAM system integrated with a PDM (product data management) module. The resulting system is then augmented with additional virtual models, some of which are available commercially and others developed by the authors. The final system allows for the simulation and evaluation of engineering products and systems that involve both mechanical and electrical components. The simulation is more comprehensive allowing for an evaluation that is more accurate and reliable than one achieved using existing state-of-the-art CAD/CAE/CAM/PDM systems. In particular, the extended virtual manufacturing capabilities allow for an accurate prediction of the different machining process parameters. The details of the development, as well as the work accomplished to date to test and validate the extended machining modeling and simulation capabilities, are presented.
{"title":"PDM-based system for manufacturing process analysis and optimization","authors":"H. El-Mounayri, Jiyu Zhang, Jie Chen","doi":"10.1109/EEIC.1999.826173","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826173","url":null,"abstract":"A PDM-based system for manufacturing process analysis and optimization is presented in this paper. The system consists of a standard (commercial) CAD/CAE/CAM system integrated with a PDM (product data management) module. The resulting system is then augmented with additional virtual models, some of which are available commercially and others developed by the authors. The final system allows for the simulation and evaluation of engineering products and systems that involve both mechanical and electrical components. The simulation is more comprehensive allowing for an evaluation that is more accurate and reliable than one achieved using existing state-of-the-art CAD/CAE/CAM/PDM systems. In particular, the extended virtual manufacturing capabilities allow for an accurate prediction of the different machining process parameters. The details of the development, as well as the work accomplished to date to test and validate the extended machining modeling and simulation capabilities, are presented.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"13 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":"129375683","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.1999.826282
D. E. Schump
Adjustable speed drives (ASD) are being widely used at this time. These drives, particularly those utilizing pulse width modulation, impose severe stress on the winding insulation of the motors being fed. Motor manufacturers are increasingly aware of new failure mechanisms associated with "drive duty". Several tests have been adopted to assure reliable motors even under these more stressful conditions. Much of the increased stress is centered on the turn and phase insulation of the motors, so the tests on these insulations are the focus of this paper. The surge test is widely used to assure the quality of these insulations. New techniques have been developed to simulate the stresses imposed by PWM drives and measure the ability of the insulation to withstand that stress, particularly inter-turn discharging and corona. Several measurement tools are now available to detect and quantify these discharges during the surge test. The detection circuit is described and test results presented for one technique being used to measure a discharge inception voltage and determine the suitability of a motor winding for "drive duty".
{"title":"Winding tests for \"Drive duty\" induction motor stators","authors":"D. E. Schump","doi":"10.1109/EEIC.1999.826282","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826282","url":null,"abstract":"Adjustable speed drives (ASD) are being widely used at this time. These drives, particularly those utilizing pulse width modulation, impose severe stress on the winding insulation of the motors being fed. Motor manufacturers are increasingly aware of new failure mechanisms associated with \"drive duty\". Several tests have been adopted to assure reliable motors even under these more stressful conditions. Much of the increased stress is centered on the turn and phase insulation of the motors, so the tests on these insulations are the focus of this paper. The surge test is widely used to assure the quality of these insulations. New techniques have been developed to simulate the stresses imposed by PWM drives and measure the ability of the insulation to withstand that stress, particularly inter-turn discharging and corona. Several measurement tools are now available to detect and quantify these discharges during the surge test. The detection circuit is described and test results presented for one technique being used to measure a discharge inception voltage and determine the suitability of a motor winding for \"drive duty\".","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"35 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":"131800461","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.1999.826277
G. Neal, J. M. Finan
Thermoplastics have made steady gains in use in a wide variety of electrical applications. One of the few areas in which thermoplastics have not been effectively utilized are applications where thermal conductivity is required. Central to the development of these materials is an understanding of the heat transfer and electrical insulation requirements of the applications and the cost/benefit relationships that exist. A simple model is presented in which the heat transfer requirements for thermally conductive materials can be understood and their costs can be estimated. Various filler systems and their performance are discussed highlighting opportunities where these materials offer a competitive alternative to existing construction techniques.
{"title":"Thermally conductive thermoplastics-a viable alternative for coil wound device and passive component construction","authors":"G. Neal, J. M. Finan","doi":"10.1109/EEIC.1999.826277","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826277","url":null,"abstract":"Thermoplastics have made steady gains in use in a wide variety of electrical applications. One of the few areas in which thermoplastics have not been effectively utilized are applications where thermal conductivity is required. Central to the development of these materials is an understanding of the heat transfer and electrical insulation requirements of the applications and the cost/benefit relationships that exist. A simple model is presented in which the heat transfer requirements for thermally conductive materials can be understood and their costs can be estimated. Various filler systems and their performance are discussed highlighting opportunities where these materials offer a competitive alternative to existing construction techniques.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"55 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":"133480341","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.1999.826224
R.T. Cartwright
This paper was written to provide electric motor manufacturers with practical knowledge about the process of commutator tang fusing. It cuts through the technical jargon and focuses on what fusing machine users need to know, in plain language. It provides the information needed to do the job, allowing users to concentrate on the results rather than on the scientific theories used to develop the fusing process.
{"title":"Practical approach to fusing [motor protection]","authors":"R.T. Cartwright","doi":"10.1109/EEIC.1999.826224","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826224","url":null,"abstract":"This paper was written to provide electric motor manufacturers with practical knowledge about the process of commutator tang fusing. It cuts through the technical jargon and focuses on what fusing machine users need to know, in plain language. It provides the information needed to do the job, allowing users to concentrate on the results rather than on the scientific theories used to develop the fusing process.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"67 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":"122813655","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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