Pub Date : 1999-05-04DOI: 10.1109/TEXCON.1999.766180
J. R. Johnson
Parallel active harmonic filters are just emerging as a viable technology. This paper discusses: (1) what a parallel active harmonic filter is; (2) a comparison of current product design/application emphases; (3) application comparisons to passive harmonic filters; and (4) performance of an active filter.
{"title":"Parallel active harmonic filters: the electronic solution for harmonics and power factor correction","authors":"J. R. Johnson","doi":"10.1109/TEXCON.1999.766180","DOIUrl":"https://doi.org/10.1109/TEXCON.1999.766180","url":null,"abstract":"Parallel active harmonic filters are just emerging as a viable technology. This paper discusses: (1) what a parallel active harmonic filter is; (2) a comparison of current product design/application emphases; (3) application comparisons to passive harmonic filters; and (4) performance of an active filter.","PeriodicalId":117593,"journal":{"name":"1999 IEEE Annual Textile, Fiber and Film Industry Technical Conference (Cat. No.99CH37006)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129989973","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 : 1999-05-04DOI: 10.1109/TEXCON.1999.766185
Wensheng Huang, T. Ghosh
Compressional behavior of fabrics is important in most end uses. The traditional compression testers such as KESF (Kawabata Evaluation System for Fabrics) and FAST (Fabric Assurance by Simple Testing) systems are used to perform offline static measurements. The principle of online measurement of compressional behavior being developed is based on the analysis of fabric deformation while the fabric moves through a nip formed by a pair of rollers, one of which is controlled by a motor and is attached to a load cell. The specimen being tested is moved continuously through the measurement system, while it is deformed in compression at a constant rate in the nip area. The load-displacement relation of the fabric is then obtained as a function of time. Assuming a stepwise anisotropic behavior in the thickness direction, the fabric stress-strain relation in compression is obtained.
织物的压缩性能在大多数最终用途中都很重要。传统的压缩测试仪，如KESF (Kawabata Evaluation System for Fabrics)和FAST (Fabric Assurance by Simple Testing)系统，用于执行离线静态测量。正在开发的在线测量压缩性能的原理是基于织物在通过一对滚轮形成的夹缝时的变形分析，其中一个滚轮由电机控制并连接在称重传感器上。被测试样在测量系统中连续移动，同时在夹紧区以恒定速率进行压缩变形。得到了织物的载荷-位移随时间的关系。假设织物在厚度方向上呈阶梯各向异性，得到了织物在压缩过程中的应力-应变关系。
{"title":"Online measurement of fabric mechanical properties: compressional behavior","authors":"Wensheng Huang, T. Ghosh","doi":"10.1109/TEXCON.1999.766185","DOIUrl":"https://doi.org/10.1109/TEXCON.1999.766185","url":null,"abstract":"Compressional behavior of fabrics is important in most end uses. The traditional compression testers such as KESF (Kawabata Evaluation System for Fabrics) and FAST (Fabric Assurance by Simple Testing) systems are used to perform offline static measurements. The principle of online measurement of compressional behavior being developed is based on the analysis of fabric deformation while the fabric moves through a nip formed by a pair of rollers, one of which is controlled by a motor and is attached to a load cell. The specimen being tested is moved continuously through the measurement system, while it is deformed in compression at a constant rate in the nip area. The load-displacement relation of the fabric is then obtained as a function of time. Assuming a stepwise anisotropic behavior in the thickness direction, the fabric stress-strain relation in compression is obtained.","PeriodicalId":117593,"journal":{"name":"1999 IEEE Annual Textile, Fiber and Film Industry Technical Conference (Cat. No.99CH37006)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132824429","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 : 1999-05-04DOI: 10.1109/TEXCON.1999.766178
J. B. Franklin, D. Parker, L. Cosby
Methods of testing electrical power systems are discussed. Recommendations are given concerning types of tests to be performed on equipment and systems and how to determine what tests should be performed. Guidelines for acceptable values are also given and discussed. Testing standards, equipment maintenance testing, and acceptance testing are discussed. The following items of equipment are discussed: LV/HV circuit breakers; switchgear; protective relays; transformers; and MV cables.
{"title":"Testing electrical power systems for safety and reliability","authors":"J. B. Franklin, D. Parker, L. Cosby","doi":"10.1109/TEXCON.1999.766178","DOIUrl":"https://doi.org/10.1109/TEXCON.1999.766178","url":null,"abstract":"Methods of testing electrical power systems are discussed. Recommendations are given concerning types of tests to be performed on equipment and systems and how to determine what tests should be performed. Guidelines for acceptable values are also given and discussed. Testing standards, equipment maintenance testing, and acceptance testing are discussed. The following items of equipment are discussed: LV/HV circuit breakers; switchgear; protective relays; transformers; and MV cables.","PeriodicalId":117593,"journal":{"name":"1999 IEEE Annual Textile, Fiber and Film Industry Technical Conference (Cat. No.99CH37006)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117244037","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 : 1999-05-04DOI: 10.1109/TEXCON.1999.766179
R. Hall
Now available in the US is a simplified approach to reliable high quality critical grade power. The technology, called diesel no-break, has been successfully installed and operating for many years around the world. Hitec Power Protection of the Netherlands developed this technology over three decades ago. Only in the last few years have US facility managers discovered this dependable, cost effective alternative to conventional battery-based UPS systems. Diesel no-break systems provide clean continuous, extended power outage protection, which enables customers to avoid costly surges and sags in their critical load power. US facility managers and engineers cite reliability and power quality as the major criteria in choosing this technology. Reliability is enhanced by lower parts count, which translates to less maintenance and coordination with fewer suppliers. Hitec's ISO9001 certification ensures stringent quality control in the design and manufacturing of the system. The nature of the system-extended power outage protection and continuous active voltage regulation and filtering-result in high quality power afforded to the customer.
现在在美国可用的是一种简化的方法来可靠的高质量临界级电源。这项技术被称为“柴油不间断”，已在世界各地成功安装和运行多年。荷兰的Hitec Power Protection公司在三十多年前开发了这项技术。直到最近几年，美国工厂管理人员才发现这种可靠、经济的UPS系统可以替代传统的电池UPS系统。柴油不间断系统提供清洁连续，延长停电保护，使客户能够避免昂贵的浪涌和下降在他们的关键负载功率。美国设施管理人员和工程师将可靠性和电能质量作为选择这项技术的主要标准。更少的零件数量提高了可靠性，这意味着更少的维护和与更少的供应商的协调。海泰克的ISO9001认证确保了系统设计和制造的严格质量控制。该系统的特性-扩展停电保护和连续有源电压调节和滤波-可为用户提供高质量的电力。
{"title":"A simplified approach to reliable high quality critical grade power","authors":"R. Hall","doi":"10.1109/TEXCON.1999.766179","DOIUrl":"https://doi.org/10.1109/TEXCON.1999.766179","url":null,"abstract":"Now available in the US is a simplified approach to reliable high quality critical grade power. The technology, called diesel no-break, has been successfully installed and operating for many years around the world. Hitec Power Protection of the Netherlands developed this technology over three decades ago. Only in the last few years have US facility managers discovered this dependable, cost effective alternative to conventional battery-based UPS systems. Diesel no-break systems provide clean continuous, extended power outage protection, which enables customers to avoid costly surges and sags in their critical load power. US facility managers and engineers cite reliability and power quality as the major criteria in choosing this technology. Reliability is enhanced by lower parts count, which translates to less maintenance and coordination with fewer suppliers. Hitec's ISO9001 certification ensures stringent quality control in the design and manufacturing of the system. The nature of the system-extended power outage protection and continuous active voltage regulation and filtering-result in high quality power afforded to the customer.","PeriodicalId":117593,"journal":{"name":"1999 IEEE Annual Textile, Fiber and Film Industry Technical Conference (Cat. No.99CH37006)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114917712","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 : 1999-05-04DOI: 10.1109/TEXCON.1999.766186
P. Wang, N. Propes, N. Khiripet, Y. Li, G. Vachtsevanos
This paper introduces an integrated methodology to monitor and diagnose machine faults in complex industrial processes such as textile and fiber manufacturing facilities. The approach is generic and applicable to a variety of industrial plants that operate critical processes and may require continuous monitoring and maintenance procedures. A dual approach is pursued: high-bandwidth fault symptomatic evidence, such as vibrations, current spikes, etc., are treated via a feature extractor/neural network classifier construct; while low-bandwidth phenomena, such as temperature, pressure, corrosion, leaks, etc., are better diagnosed with a fuzzy rule base set as an expert system. The technique is illustrated with typical examples from benchmark processes common to many industrial plants.
{"title":"An integrated approach to machine fault diagnosis","authors":"P. Wang, N. Propes, N. Khiripet, Y. Li, G. Vachtsevanos","doi":"10.1109/TEXCON.1999.766186","DOIUrl":"https://doi.org/10.1109/TEXCON.1999.766186","url":null,"abstract":"This paper introduces an integrated methodology to monitor and diagnose machine faults in complex industrial processes such as textile and fiber manufacturing facilities. The approach is generic and applicable to a variety of industrial plants that operate critical processes and may require continuous monitoring and maintenance procedures. A dual approach is pursued: high-bandwidth fault symptomatic evidence, such as vibrations, current spikes, etc., are treated via a feature extractor/neural network classifier construct; while low-bandwidth phenomena, such as temperature, pressure, corrosion, leaks, etc., are better diagnosed with a fuzzy rule base set as an expert system. The technique is illustrated with typical examples from benchmark processes common to many industrial plants.","PeriodicalId":117593,"journal":{"name":"1999 IEEE Annual Textile, Fiber and Film Industry Technical Conference (Cat. No.99CH37006)","volume":"299 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116404825","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 : 1999-05-04DOI: 10.1109/TEXCON.1999.766181
J. G. Dougherty
The purpose of this paper is to provide an update on the Power Quality Initiative aimed at the plastics and polymers processing industry. With the goal of identifying unique power quality problems and solutions, the Electric Power Research Institute (EPRI), Duke Power Company, and other industry "players" embarked on a Power Quality Initiative in late 1997. The initiative involves equipment testing for five process types: blown thin film, plastic jacket, thick film, injection molding, and plastic pipe extrusion. CommScope Incorporated of Hickory, NC became interested in the initiative at its inception and has since then partnered with EPRI, Duke Power and the Polymers Extension Program to test their extrusion equipment, implement solutions, and has offered their case study to promote this Power Quality Initiative.
{"title":"Power Quality Initiative: polymers processing","authors":"J. G. Dougherty","doi":"10.1109/TEXCON.1999.766181","DOIUrl":"https://doi.org/10.1109/TEXCON.1999.766181","url":null,"abstract":"The purpose of this paper is to provide an update on the Power Quality Initiative aimed at the plastics and polymers processing industry. With the goal of identifying unique power quality problems and solutions, the Electric Power Research Institute (EPRI), Duke Power Company, and other industry \"players\" embarked on a Power Quality Initiative in late 1997. The initiative involves equipment testing for five process types: blown thin film, plastic jacket, thick film, injection molding, and plastic pipe extrusion. CommScope Incorporated of Hickory, NC became interested in the initiative at its inception and has since then partnered with EPRI, Duke Power and the Polymers Extension Program to test their extrusion equipment, implement solutions, and has offered their case study to promote this Power Quality Initiative.","PeriodicalId":117593,"journal":{"name":"1999 IEEE Annual Textile, Fiber and Film Industry Technical Conference (Cat. No.99CH37006)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122546621","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 : 1999-05-04DOI: 10.1109/TEXCON.1999.766183
W.J. Lukitsch
Many view soft starters and AC variable frequency drives as the same or similar technologies. And why not? Reading literature and articles the same or similar terms are used. The list of possible applications are virtually identical. But they are very different and these differences need to be understood if they are to be applied properly. This paper reviews the basic operating principles of soft starters and AC variable frequency drives (VFD). A further analysis of these technologies reviews how motor performance is affected. These affects are compared in order to provide insight into proper selection of either soft starters or VFDs.
{"title":"Soft start vs AC drives-understand the differences","authors":"W.J. Lukitsch","doi":"10.1109/TEXCON.1999.766183","DOIUrl":"https://doi.org/10.1109/TEXCON.1999.766183","url":null,"abstract":"Many view soft starters and AC variable frequency drives as the same or similar technologies. And why not? Reading literature and articles the same or similar terms are used. The list of possible applications are virtually identical. But they are very different and these differences need to be understood if they are to be applied properly. This paper reviews the basic operating principles of soft starters and AC variable frequency drives (VFD). A further analysis of these technologies reviews how motor performance is affected. These affects are compared in order to provide insight into proper selection of either soft starters or VFDs.","PeriodicalId":117593,"journal":{"name":"1999 IEEE Annual Textile, Fiber and Film Industry Technical Conference (Cat. No.99CH37006)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114068938","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 : 1999-05-04DOI: 10.1109/TEXCON.1999.766182
C. Mercier, D. Cooper
This paper identifies and discusses the reliability issues associated with three-phase electric motors controlled by constantly improving, fast-switching pulse-width modulated AC adjustable-speed drives and the selection of the power supply cable. The fast switching rates of PWM drives generate high frequency currents and induced potentials on the motor, drive and interconnected equipment. This leads to premature motor bearing failure and electrical interference to the drive and nearby equipment. Research shows solutions related to the power cable dictate a construction that must provide an effective electrostatic shielding for isolation of the high frequency currents and potentials, and an effective low impedance path to ground for draining canceling ground currents. This paper presents an overview of the benefits and drawbacks of typical National Electrical Code power cable constructions that help reduce or eliminate the problems associated with PWM AC adjustable-speed drives.
{"title":"Selection of power cables for PWM AC adjustable-speed drives","authors":"C. Mercier, D. Cooper","doi":"10.1109/TEXCON.1999.766182","DOIUrl":"https://doi.org/10.1109/TEXCON.1999.766182","url":null,"abstract":"This paper identifies and discusses the reliability issues associated with three-phase electric motors controlled by constantly improving, fast-switching pulse-width modulated AC adjustable-speed drives and the selection of the power supply cable. The fast switching rates of PWM drives generate high frequency currents and induced potentials on the motor, drive and interconnected equipment. This leads to premature motor bearing failure and electrical interference to the drive and nearby equipment. Research shows solutions related to the power cable dictate a construction that must provide an effective electrostatic shielding for isolation of the high frequency currents and potentials, and an effective low impedance path to ground for draining canceling ground currents. This paper presents an overview of the benefits and drawbacks of typical National Electrical Code power cable constructions that help reduce or eliminate the problems associated with PWM AC adjustable-speed drives.","PeriodicalId":117593,"journal":{"name":"1999 IEEE Annual Textile, Fiber and Film Industry Technical Conference (Cat. No.99CH37006)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115542661","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 : 1999-05-04DOI: 10.1109/TEXCON.1999.766184
M.E. Yuksekkaya, W. Oxenham
A new compression test unit was developed for the assessment of the surface properties of fibers. In order to measure the variation in the compression force during a test, a full bridge load cell was developed. It was seen that the signal coming from the strain gages was superimposed with noise. It was also found that the noise was from both electrical and mechanical sources. An extensive mathematical analysis of mechanical noise and the application of a mechanical noise reduction technique minimized the mechanical noise component. Analysis of electrical noise showed that the motion control card was interfacing with the data acquisition (DAQ) card via both the RS232 and the AC power line. It was necessary to separate the motion control unit and the DAQ unit in order to eliminate the electrical noise problem present in the system. After eliminating the noise from the unit, the calibration of the strain gages has been performed. The coefficient of correlation was found 1.00 with a cubic model.
{"title":"Analysis of mechanical and electrical noise interfacing the instrument during data acquisition: development of a machine for assessing surface properties of fibers","authors":"M.E. Yuksekkaya, W. Oxenham","doi":"10.1109/TEXCON.1999.766184","DOIUrl":"https://doi.org/10.1109/TEXCON.1999.766184","url":null,"abstract":"A new compression test unit was developed for the assessment of the surface properties of fibers. In order to measure the variation in the compression force during a test, a full bridge load cell was developed. It was seen that the signal coming from the strain gages was superimposed with noise. It was also found that the noise was from both electrical and mechanical sources. An extensive mathematical analysis of mechanical noise and the application of a mechanical noise reduction technique minimized the mechanical noise component. Analysis of electrical noise showed that the motion control card was interfacing with the data acquisition (DAQ) card via both the RS232 and the AC power line. It was necessary to separate the motion control unit and the DAQ unit in order to eliminate the electrical noise problem present in the system. After eliminating the noise from the unit, the calibration of the strain gages has been performed. The coefficient of correlation was found 1.00 with a cubic model.","PeriodicalId":117593,"journal":{"name":"1999 IEEE Annual Textile, Fiber and Film Industry Technical Conference (Cat. No.99CH37006)","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114587828","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/TEXCON.1999.766187
J. Toth
Power monitoring equipment has evolved quite dramatically over the past twenty years. Single-function recording systems have made way for the multi-function recorders of today. This paper reviews several types of power monitoring equipment including capabilities, sensitivity, types of data recorded, and how the recorded data could be used.
{"title":"Power monitoring","authors":"J. Toth","doi":"10.1109/TEXCON.1999.766187","DOIUrl":"https://doi.org/10.1109/TEXCON.1999.766187","url":null,"abstract":"Power monitoring equipment has evolved quite dramatically over the past twenty years. Single-function recording systems have made way for the multi-function recorders of today. This paper reviews several types of power monitoring equipment including capabilities, sensitivity, types of data recorded, and how the recorded data could be used.","PeriodicalId":117593,"journal":{"name":"1999 IEEE Annual Textile, Fiber and Film Industry Technical Conference (Cat. No.99CH37006)","volume":"33 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":"123779465","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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