Pub Date : 1900-01-01DOI: 10.1109/EEIC.2005.1566286
Zhong Jinghe, Zhang Mingyan, Jiang Qibin, Cai Binfen, Fan Yong
In this paper, a type of nano-hybrid polyimide/silica film was prepared by hydrolysis and condensation of methyl-triethoxysilane that served as the precursor of the inorganic moiety and produced the nano-particle of silica, in-situ, in the polyamic acid solution through a sol-gel reaction. The chemical structure and surface morphology of the films were characterized by Fourier transform infrared spectroscopy and Atomic force microscopy respectively. The properties of the films, such as thermal stability and corona-resistance property were investigated as a function of the SiO2 content. The structure-property response on the hybrid system was also discussed. The result of the experiments indicate that the properties of the nano-hybrid materials were not only relative to the inorganic component content of the system, but also to the morphology between the inorganic and organic phases and the character of the interface. It proved that a strong interaction existed between the two phases when a coupling agent is added into the polyimide/silica composite system and that it would play a significant role in improving the miscibility between the two phases, and in reducing the size of the inorganic particles. It also showed that no apparent change had occurred in the thermal decomposition temperature of the hybrid film and the corona-resistance property of the hybrid film had greatly improved as a result of the inorganic component being added into polyimide resin matrix
{"title":"Effects of inorganic content and morphology between phases on structure and properties of the hybrid polyimide film","authors":"Zhong Jinghe, Zhang Mingyan, Jiang Qibin, Cai Binfen, Fan Yong","doi":"10.1109/EEIC.2005.1566286","DOIUrl":"https://doi.org/10.1109/EEIC.2005.1566286","url":null,"abstract":"In this paper, a type of nano-hybrid polyimide/silica film was prepared by hydrolysis and condensation of methyl-triethoxysilane that served as the precursor of the inorganic moiety and produced the nano-particle of silica, in-situ, in the polyamic acid solution through a sol-gel reaction. The chemical structure and surface morphology of the films were characterized by Fourier transform infrared spectroscopy and Atomic force microscopy respectively. The properties of the films, such as thermal stability and corona-resistance property were investigated as a function of the SiO2 content. The structure-property response on the hybrid system was also discussed. The result of the experiments indicate that the properties of the nano-hybrid materials were not only relative to the inorganic component content of the system, but also to the morphology between the inorganic and organic phases and the character of the interface. It proved that a strong interaction existed between the two phases when a coupling agent is added into the polyimide/silica composite system and that it would play a significant role in improving the miscibility between the two phases, and in reducing the size of the inorganic particles. It also showed that no apparent change had occurred in the thermal decomposition temperature of the hybrid film and the corona-resistance property of the hybrid film had greatly improved as a result of the inorganic component being added into polyimide resin matrix","PeriodicalId":267510,"journal":{"name":"Proceedings Electrical Insulation Conference and Electrical Manufacturing Expo, 2005.","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134373804","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 : 1900-01-01DOI: 10.1109/EEIC.2005.1566336
M. Jackson, G. Robinson, M. Brady
Bipolar proton exchange membrane (PEM) fuel cell plates are composed of flat pieces of graphite with channels or trenches machined into the face of the plate so that gases can flow in the channels of the plate. The operation of the fuel cell is dependent on the flow of oxygen and hydrogen gases around a fuel cell stack, which is composed of many thin plates connected to each other in very close proximity. Owing to the brittle nature of graphite, fuel cells plates are now made from nickel-chromium alloys that are coated with a thin solid layer of CrN or TiN to improve corrosion resistance. However, nickel-chromium alloys are notoriously difficult to machine. This paper describes the development of micromachining processes that allows fuel cells plates to be machined are very high speeds using novel nanocrystalline diamond and titanium coatings that have been specifically designed to cut strain hardening alloys at extremely high speeds
{"title":"Machining of proton exchange membrane fuel cells using micromilling tools","authors":"M. Jackson, G. Robinson, M. Brady","doi":"10.1109/EEIC.2005.1566336","DOIUrl":"https://doi.org/10.1109/EEIC.2005.1566336","url":null,"abstract":"Bipolar proton exchange membrane (PEM) fuel cell plates are composed of flat pieces of graphite with channels or trenches machined into the face of the plate so that gases can flow in the channels of the plate. The operation of the fuel cell is dependent on the flow of oxygen and hydrogen gases around a fuel cell stack, which is composed of many thin plates connected to each other in very close proximity. Owing to the brittle nature of graphite, fuel cells plates are now made from nickel-chromium alloys that are coated with a thin solid layer of CrN or TiN to improve corrosion resistance. However, nickel-chromium alloys are notoriously difficult to machine. This paper describes the development of micromachining processes that allows fuel cells plates to be machined are very high speeds using novel nanocrystalline diamond and titanium coatings that have been specifically designed to cut strain hardening alloys at extremely high speeds","PeriodicalId":267510,"journal":{"name":"Proceedings Electrical Insulation Conference and Electrical Manufacturing Expo, 2005.","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130018450","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 : 1900-01-01DOI: 10.1109/EEIC.2005.1566299
A. J. Palumbo
This paper focuses on the development, features, and applications of the unique power dense motors. The content is presented as a case study under the following headings: a) the "need for speed"-electric formula racing; b) principles of the power dense induction motor; principles of the power dense cooling system; and applications of the power dense motor
{"title":"Development of the power dense induction motor","authors":"A. J. Palumbo","doi":"10.1109/EEIC.2005.1566299","DOIUrl":"https://doi.org/10.1109/EEIC.2005.1566299","url":null,"abstract":"This paper focuses on the development, features, and applications of the unique power dense motors. The content is presented as a case study under the following headings: a) the \"need for speed\"-electric formula racing; b) principles of the power dense induction motor; principles of the power dense cooling system; and applications of the power dense motor","PeriodicalId":267510,"journal":{"name":"Proceedings Electrical Insulation Conference and Electrical Manufacturing Expo, 2005.","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130084688","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 : 1900-01-01DOI: 10.1109/EEIC.2005.1566287
H. Penrose
The utilization of reliability-centered maintenance (RCM) techniques on electric motors allows for the proper selection of technologies for effective selection of condition-based monitoring (CBM) processes and technologies. The RCM approach assists the manufacturer or supplier in maintenance recommendations and the reliability specialist in selecting the optimum approach in performing the right maintenance on the right equipment at the right time for the right reasons. This paper is an introduction to the selection of electrical motor diagnostic technologies for rotating machinery that can be applied in any environment
{"title":"RCM-based motor management","authors":"H. Penrose","doi":"10.1109/EEIC.2005.1566287","DOIUrl":"https://doi.org/10.1109/EEIC.2005.1566287","url":null,"abstract":"The utilization of reliability-centered maintenance (RCM) techniques on electric motors allows for the proper selection of technologies for effective selection of condition-based monitoring (CBM) processes and technologies. The RCM approach assists the manufacturer or supplier in maintenance recommendations and the reliability specialist in selecting the optimum approach in performing the right maintenance on the right equipment at the right time for the right reasons. This paper is an introduction to the selection of electrical motor diagnostic technologies for rotating machinery that can be applied in any environment","PeriodicalId":267510,"journal":{"name":"Proceedings Electrical Insulation Conference and Electrical Manufacturing Expo, 2005.","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126603950","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 : 1900-01-01DOI: 10.1109/EEIC.2005.1566262
C. Paynot, L. Lamarre, É. David, R. Taghizad
Results related to the measurement of transient currents recorded after a DC voltage step followed by a short-circuit are reported for both rotor and stator windings for a number of hydro and turbo synchronous rotating machines, motors and generators, in order to assess the quality of the insulating system. Measurements were conducted in the field for windings from different technology yielding different time domain response. Besides reckoning the aging of the insulation, other features such as moisture absorption, end-winding contamination and incomplete curing of the insulating resin (followed by post-curing) were detected in several cases
{"title":"The use of transient current for the evaluation of the condition of rotor and stator insulation systems of large synchronous rotating machines","authors":"C. Paynot, L. Lamarre, É. David, R. Taghizad","doi":"10.1109/EEIC.2005.1566262","DOIUrl":"https://doi.org/10.1109/EEIC.2005.1566262","url":null,"abstract":"Results related to the measurement of transient currents recorded after a DC voltage step followed by a short-circuit are reported for both rotor and stator windings for a number of hydro and turbo synchronous rotating machines, motors and generators, in order to assess the quality of the insulating system. Measurements were conducted in the field for windings from different technology yielding different time domain response. Besides reckoning the aging of the insulation, other features such as moisture absorption, end-winding contamination and incomplete curing of the insulating resin (followed by post-curing) were detected in several cases","PeriodicalId":267510,"journal":{"name":"Proceedings Electrical Insulation Conference and Electrical Manufacturing Expo, 2005.","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129450407","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 : 1900-01-01DOI: 10.1109/EEIC.2005.1566298
E. Mayer
This paper traces the development of three-phase induction motor controls using the Semikron advanced integration (SKAI) power electronics system. The SKAI was developed for hybrid and electric vehicles and integrates all the components of a three-phase inverter. As such, it promises to deliver significant cost savings. The SKAI utilizes a digital signal processor (DSP) controller. However, Semikron does not supply the necessary software for the DSP controller. The DSP used in the controller is manufactured by Texas Instruments. Texas Instruments provides an array of DSP programming utilities. This paper discusses aspects of programming and testing the DSP controller
{"title":"Development of motor controls using the Semikron advanced integration power module","authors":"E. Mayer","doi":"10.1109/EEIC.2005.1566298","DOIUrl":"https://doi.org/10.1109/EEIC.2005.1566298","url":null,"abstract":"This paper traces the development of three-phase induction motor controls using the Semikron advanced integration (SKAI) power electronics system. The SKAI was developed for hybrid and electric vehicles and integrates all the components of a three-phase inverter. As such, it promises to deliver significant cost savings. The SKAI utilizes a digital signal processor (DSP) controller. However, Semikron does not supply the necessary software for the DSP controller. The DSP used in the controller is manufactured by Texas Instruments. Texas Instruments provides an array of DSP programming utilities. This paper discusses aspects of programming and testing the DSP controller","PeriodicalId":267510,"journal":{"name":"Proceedings Electrical Insulation Conference and Electrical Manufacturing Expo, 2005.","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131090513","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 : 1900-01-01DOI: 10.1109/EEIC.2005.1566326
M. A. Patterson
This paper explains an offline testing procedure to determine the condition of a used DC motor in order to determine whether it needs to be serviced or is viable for continued operation. Through the use of common test equipment, several motor measurements such as vibration, acoustic amplitude, and current variance can be analyzed to determine the condition of the motor. This procedure is vital in quality measures and preventative maintenance in order to reduce downtime. This testing procedure was tested on the Tennant version of the Briggs and Stratton Etek DC motor
{"title":"Indirect analysis of motor condition through vibration and current analysis","authors":"M. A. Patterson","doi":"10.1109/EEIC.2005.1566326","DOIUrl":"https://doi.org/10.1109/EEIC.2005.1566326","url":null,"abstract":"This paper explains an offline testing procedure to determine the condition of a used DC motor in order to determine whether it needs to be serviced or is viable for continued operation. Through the use of common test equipment, several motor measurements such as vibration, acoustic amplitude, and current variance can be analyzed to determine the condition of the motor. This procedure is vital in quality measures and preventative maintenance in order to reduce downtime. This testing procedure was tested on the Tennant version of the Briggs and Stratton Etek DC motor","PeriodicalId":267510,"journal":{"name":"Proceedings Electrical Insulation Conference and Electrical Manufacturing Expo, 2005.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125879699","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 : 1900-01-01DOI: 10.1109/EEIC.2005.1566281
S. Haq, S. Jayaram, E. Cherney
The paper describes the failure mechanisms of medium voltage inter-turn insulation as a consequence of space charge formation and partial discharge (PD) activity. In order to investigate the failure behavior, models of turn insulation are prepared with magnetic wires having polyimide and nano-filled coating. The ageing of such model bar samples is done under sinusoidal (60 Hz), fast repetitive unipolar voltage pulses and high frequency waveforms. The ageing tests are performed in the presence of PD activity. To establish the residual strength of bar samples, DC breakdown voltages are determined before and after the ageing. Experimental results reveal that the evaluation and analysis of such model study will be helpful for both motor and wire manufacturers to minimize ageing and to improve motor performance under medium voltage inverter-fed drive applications
{"title":"Degradation of turn insulation subjected to fast repetitive voltage pulses","authors":"S. Haq, S. Jayaram, E. Cherney","doi":"10.1109/EEIC.2005.1566281","DOIUrl":"https://doi.org/10.1109/EEIC.2005.1566281","url":null,"abstract":"The paper describes the failure mechanisms of medium voltage inter-turn insulation as a consequence of space charge formation and partial discharge (PD) activity. In order to investigate the failure behavior, models of turn insulation are prepared with magnetic wires having polyimide and nano-filled coating. The ageing of such model bar samples is done under sinusoidal (60 Hz), fast repetitive unipolar voltage pulses and high frequency waveforms. The ageing tests are performed in the presence of PD activity. To establish the residual strength of bar samples, DC breakdown voltages are determined before and after the ageing. Experimental results reveal that the evaluation and analysis of such model study will be helpful for both motor and wire manufacturers to minimize ageing and to improve motor performance under medium voltage inverter-fed drive applications","PeriodicalId":267510,"journal":{"name":"Proceedings Electrical Insulation Conference and Electrical Manufacturing Expo, 2005.","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128923937","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 : 1900-01-01DOI: 10.1109/EEIC.2005.1566311
J. Masi
The advent of organic materials for electroluminescent devices has allowed a wide variety of applications in displays, communications, sensors, and the like. The demonstration of organic magnetic materials has offered the challenge of finding polymer (organic) materials in which there is sufficient electronic exchange as well as stability in both thermally and chemically. The intrinsically conductive and semiconductive polymers have allowed designers the liberties of flexibility and conductivity to meet needs from batteries to solar cells. This paper gives an overview of this search past, present, and future and the synthesis of promising new complex polymer building blocks which can yield conductive, magnetic, semiconductive and luminescent, materials for devices of the future in power, storage, displays, and communications devices. The use of these materials to produce electrically active polymeric materials has changed our way of thinking about how to fabricate devices with novel and useful properties and with properties heretofore unrealizable
{"title":"New developments in polymers: conductive and active (magnetic, luminescent and electronic) applications","authors":"J. Masi","doi":"10.1109/EEIC.2005.1566311","DOIUrl":"https://doi.org/10.1109/EEIC.2005.1566311","url":null,"abstract":"The advent of organic materials for electroluminescent devices has allowed a wide variety of applications in displays, communications, sensors, and the like. The demonstration of organic magnetic materials has offered the challenge of finding polymer (organic) materials in which there is sufficient electronic exchange as well as stability in both thermally and chemically. The intrinsically conductive and semiconductive polymers have allowed designers the liberties of flexibility and conductivity to meet needs from batteries to solar cells. This paper gives an overview of this search past, present, and future and the synthesis of promising new complex polymer building blocks which can yield conductive, magnetic, semiconductive and luminescent, materials for devices of the future in power, storage, displays, and communications devices. The use of these materials to produce electrically active polymeric materials has changed our way of thinking about how to fabricate devices with novel and useful properties and with properties heretofore unrealizable","PeriodicalId":267510,"journal":{"name":"Proceedings Electrical Insulation Conference and Electrical Manufacturing Expo, 2005.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122249051","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 : 1900-01-01DOI: 10.1109/EEIC.2005.1566256
J. Timperley, B. Nindra, S. A. Filliben
A 69 MVA pump-generator with corona resistant filled polyimide film applied as stator coil strand insulation has been returned to service. Design modifications were implemented to take advantage of the new insulation system; testing results of these unique 13 kV stator coils are discussed. Operation data from the rewound machine is presented. This is a companion paper to "Application of Corona Resistant Polyimide Film to Pump Generator Stator Coils" presented at ISEI 2004
{"title":"Performance evaluation of pump generator stator coils with corona resistant polyimide film","authors":"J. Timperley, B. Nindra, S. A. Filliben","doi":"10.1109/EEIC.2005.1566256","DOIUrl":"https://doi.org/10.1109/EEIC.2005.1566256","url":null,"abstract":"A 69 MVA pump-generator with corona resistant filled polyimide film applied as stator coil strand insulation has been returned to service. Design modifications were implemented to take advantage of the new insulation system; testing results of these unique 13 kV stator coils are discussed. Operation data from the rewound machine is presented. This is a companion paper to \"Application of Corona Resistant Polyimide Film to Pump Generator Stator Coils\" presented at ISEI 2004","PeriodicalId":267510,"journal":{"name":"Proceedings Electrical Insulation Conference and Electrical Manufacturing Expo, 2005.","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123954548","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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