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Proceedings of Intelec 94最新文献

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A novel three-phase utility interface minimizing line current harmonics of high-power telecommunications rectifier modules 一种新型三相实用接口，最大限度地降低了大功率电信整流模块的线路电流谐波
Proceedings of Intelec 94 Pub Date : 1994-10-30 DOI: 10.1109/INTLEC.1994.396642
J. Kolar, F. Zach
{"title":"A novel three-phase utility interface minimizing line current harmonics of high-power telecommunications rectifier modules","authors":"J. Kolar, F. Zach","doi":"10.1109/INTLEC.1994.396642","DOIUrl":"https://doi.org/10.1109/INTLEC.1994.396642","url":null,"abstract":"Based on the combination of a three-phase diode bridge and DC/DC boost converter a new three-phase three-switch three-level PWM rectifier system is developed. It can be characterized by sinusoidal mains current consumption, controlled output voltage and low blocking voltage stress on the power transistors. The application could be, e.g., for feeding the DC link of a telecommunications power supply module. The stationary operational behavior, the control of the mains currents and of the output voltage are analyzed. Finally, the stresses on the system components are determined by digital simulation and compared to the stresses in a conventional PWM rectifier system.<<ETX>>","PeriodicalId":123164,"journal":{"name":"Proceedings of Intelec 94","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127210888","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}
引用次数: 533
Power system architecture's for the emerging information highway 电力系统架构是为新兴的信息高速公路设计的
Proceedings of Intelec 94 Pub Date : 1994-10-30 DOI: 10.1109/INTLEC.1994.396606
L. Cividino
{"title":"Power system architecture's for the emerging information highway","authors":"L. Cividino","doi":"10.1109/INTLEC.1994.396606","DOIUrl":"https://doi.org/10.1109/INTLEC.1994.396606","url":null,"abstract":"This paper provides an analysis of various powering requirements for the emerging information highway and discusses key consideration of plant design. The emerging information highway architecture is undergoing significant changes to find cost effective ways of deploying new services. Fiber in the loop (FITL) has faced significant challenges including powering architectures that were too costly to enable wide spread deployment of FITL systems. With the recent surge of interest in hybrid fiber coax systems and corporate alliances, new architectures have emerged which provide promising alternatives to the conventional DC powering approach. This paper compares various powering methods over coaxial cable. Design considerations of DC powering over coaxial cable is reviewed to encourage dialogue with industry experts and customers. Consideration and recommendations for outside plant power systems are presented.<<ETX>>","PeriodicalId":123164,"journal":{"name":"Proceedings of Intelec 94","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114333862","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}
引用次数: 13
The never ending pursuit of float voltage uniformity in stationary reserve battery plants 固定备用电池厂对浮压均匀性永无止境的追求
Proceedings of Intelec 94 Pub Date : 1994-10-30 DOI: 10.1109/INTLEC.1994.396589
D. Feder, G. Carosella
{"title":"The never ending pursuit of float voltage uniformity in stationary reserve battery plants","authors":"D. Feder, G. Carosella","doi":"10.1109/INTLEC.1994.396589","DOIUrl":"https://doi.org/10.1109/INTLEC.1994.396589","url":null,"abstract":"This paper traces the history of the concept of Pb-acid stationary telecommunication battery float voltage uniformity from the period when only lead antimony standby batteries were used, describes the problems encountered with the introduction of lead calcium cells and introduces the modern concepts which utilize positive and negative polarizations and Tafel curves to provide correct technical understanding of the causes and significance of voltage variability in antimony-free standby battery systems. The paper describes both early and recent attempts to control cell voltage variability by the use of individual cell electronic \"controllers\". It presents comparative cell voltage, positive and negative polarizations on cells in actual telecommunication service, with or without the use of these controllers. The data demonstrate that voltage variability in Sb-free cells is primarily due to variations in negative polarizations and should have no effect on cell performance or life.<<ETX>>","PeriodicalId":123164,"journal":{"name":"Proceedings of Intelec 94","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123738804","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}
引用次数: 15
Influence of compression on microfiber glass separator and effect of orientation on battery performance 压缩对超细玻璃纤维隔膜的影响及取向对电池性能的影响
Proceedings of Intelec 94 Pub Date : 1994-10-30 DOI: 10.1109/INTLEC.1994.396671
R. Biagetti, I.C. Baeringer, F. Chiacchio, A. Cannone, J. Kelley, J. B. Ockerman, A. Salkind
{"title":"Influence of compression on microfiber glass separator and effect of orientation on battery performance","authors":"R. Biagetti, I.C. Baeringer, F. Chiacchio, A. Cannone, J. Kelley, J. B. Ockerman, A. Salkind","doi":"10.1109/INTLEC.1994.396671","DOIUrl":"https://doi.org/10.1109/INTLEC.1994.396671","url":null,"abstract":"As recombinant valve-regulated Pb-acid batteries continue to find acceptance as a replacement for flooded Pb-acid batteries, there is a need to understand the role of the microfiber glass mat which is used as the separator and acid reservoir in these batteries. Wicking experiments are instructive and can serve as a valuable analysis tool. In this paper, the effects of compression and thickness on the wicking rates are addressed and presented. The effects of thickness and compression on the acid uptake of the mat material were measured and data on specific gravity segregation are presented. The effects on battery capacities of cycling and subsequent varied recharges are included. The major characteristics of the absorbent glass mat separators tested provided a family of curves which shows retardation of the wicking rates with increasing compression. The cyclic capacity data as a function of battery orientation indicate that large power batteries could possibly benefit from cells constructed with plates in a horizontal position (parallel to the horizon).<<ETX>>","PeriodicalId":123164,"journal":{"name":"Proceedings of Intelec 94","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129403540","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}
引用次数: 7
A practical and low cost PWM battery charger using fuzzy logic control for UPS application 一种实用的、低成本的基于模糊逻辑控制的PWM电池充电器
Proceedings of Intelec 94 Pub Date : 1994-10-30 DOI: 10.1109/INTLEC.1994.396631
Yu Qin, S. Du
{"title":"A practical and low cost PWM battery charger using fuzzy logic control for UPS application","authors":"Yu Qin, S. Du","doi":"10.1109/INTLEC.1994.396631","DOIUrl":"https://doi.org/10.1109/INTLEC.1994.396631","url":null,"abstract":"In this paper, a practical and low cost PWM battery charger for UPS applications is proposed. For this type of PWM battery charger system, the power transistors used for PWM inverters are utilized to charge the battery in battery charger mode, thus fewer system components are required for the UPS system and higher overall system efficiency is achieved. By using advanced fuzzy logic techniques for battery system feedback control, the battery charger system is able to achieve better dynamic performance and easier implementation.<<ETX>>","PeriodicalId":123164,"journal":{"name":"Proceedings of Intelec 94","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126844222","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}
引用次数: 3
Some field experience with battery impedance measurement as a useful maintenance tool 有一些电池阻抗测量的现场经验，作为有用的维护工具
Proceedings of Intelec 94 Pub Date : 1994-10-30 DOI: 10.1109/INTLEC.1994.396645
J. Hawkins
{"title":"Some field experience with battery impedance measurement as a useful maintenance tool","authors":"J. Hawkins","doi":"10.1109/INTLEC.1994.396645","DOIUrl":"https://doi.org/10.1109/INTLEC.1994.396645","url":null,"abstract":"This paper reports on the initial findings of a coordinated program to assess the usefulness of battery impedance measurements as a maintenance tool. A newly developed impedance meter is being widely used to characterise the online cell and battery impedances of the range of lead-acid batteries used in the network. Early trends and some aspects associated with the use and interpretation of on-line impedance measurements are discussed. Encouraging results of the use of dynamic impedance measurement during discharge testing are also presented.<<ETX>>","PeriodicalId":123164,"journal":{"name":"Proceedings of Intelec 94","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125995015","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}
引用次数: 20
Dynamic characteristics of multiple-output buck-type converters 多输出buck型变换器的动态特性
Proceedings of Intelec 94 Pub Date : 1994-10-30 DOI: 10.1109/INTLEC.1994.396632
Qing Chen, F. Lee, M. Jovanovic
{"title":"Dynamic characteristics of multiple-output buck-type converters","authors":"Qing Chen, F. Lee, M. Jovanovic","doi":"10.1109/INTLEC.1994.396632","DOIUrl":"https://doi.org/10.1109/INTLEC.1994.396632","url":null,"abstract":"The paper discusses the dynamic characteristics (i.e., audio susceptibilities, output impedances and output transimpedances) of multiple-output buck-type power converters with weighted voltage control. The open-loop and closed-loop small-signal characteristics are examined. Based on this analysis, various design issues are also addressed.<<ETX>>","PeriodicalId":123164,"journal":{"name":"Proceedings of Intelec 94","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126571842","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}
引用次数: 1
Interface specifications for a global grounding topology 全球接地拓扑的接口规范
Proceedings of Intelec 94 Pub Date : 1994-10-30 DOI: 10.1109/INTLEC.1994.396637
B. Ashdown, N. Korbel, B. Panesar
{"title":"Interface specifications for a global grounding topology","authors":"B. Ashdown, N. Korbel, B. Panesar","doi":"10.1109/INTLEC.1994.396637","DOIUrl":"https://doi.org/10.1109/INTLEC.1994.396637","url":null,"abstract":"After briefly reviewing the global bonding and grounding environment in general terms, specific interface requirements of telecommunication equipment which are needed to ensure robustness and reliability in the global environment, are discussed in detail. Areas covered in the discussion include communication links (both AC and DC coupled types), DC and AC power source referencing, safety requirements and noise immunity to direct current, mains frequency, wide-band and lightning transients. Also included are rationale for the various requirements and, where necessary, specification of appropriate hardware. It is concluded that equipment designed for compliance with the proposed bonding and interface standards will be sufficiently robust to be installed in accordance with any national standards, operating company practices and bonding/grounding topologies without redesign, internal changes or circuit modifications. Utilization of a common set of specifications will also enhance harmonization of design and testing standards within the global community and may possibly serve as a catalyst for development of a common, international standard. Deployment of equipment and systems designed in conformance with the proposed set of standards is expected to occur in the near future and will allow verification of the interface specifications with practical application of appropriate testing methods.<<ETX>>","PeriodicalId":123164,"journal":{"name":"Proceedings of Intelec 94","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125183810","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}
引用次数: 0
Permanent on-site generator sets for huts and CEVs 用于小屋和cev的永久性现场发电机组
Proceedings of Intelec 94 Pub Date : 1994-10-30 DOI: 10.1109/INTLEC.1994.396577
D. Wilmont, S. Iverson
{"title":"Permanent on-site generator sets for huts and CEVs","authors":"D. Wilmont, S. Iverson","doi":"10.1109/INTLEC.1994.396577","DOIUrl":"https://doi.org/10.1109/INTLEC.1994.396577","url":null,"abstract":"This paper presents an overview of the issues surrounding remote telecommunication terminal (including controlled environmental vaults-CEVs) auxiliary powering. The use of permanent on-site generator sets with automatic transfer switches, combined with traditional battery back-up, is proposed to provide an extended power capacity to offset any extended outage.<<ETX>>","PeriodicalId":123164,"journal":{"name":"Proceedings of Intelec 94","volume":"231 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127009996","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}
引用次数: 2
Cooling and/or heating of an equipment room without using any freon, no maintenance and almost no consumption of energy 在不使用任何氟利昂的情况下冷却和/或加热机房，无需维护，几乎不消耗能源
Proceedings of Intelec 94 Pub Date : 1994-10-30 DOI: 10.1109/INTLEC.1994.396653
R. Ulfvengren, A. Johansson, M. Klang
{"title":"Cooling and/or heating of an equipment room without using any freon, no maintenance and almost no consumption of energy","authors":"R. Ulfvengren, A. Johansson, M. Klang","doi":"10.1109/INTLEC.1994.396653","DOIUrl":"https://doi.org/10.1109/INTLEC.1994.396653","url":null,"abstract":"For a long time the praxis has been, that tele-equipment should have a very narrow temperature range when being installed into an equipment room, maybe only a few degrees between the highest and lowest temperature. However, by the new technology that has come out in this field, it has been proved that the temperature can easily vary from in some cases 5/spl deg/C to 35/spl deg/C. This means, that in many telecommunication rooms today, the overheating coming from the equipment is taken away daytime and in many cases the room has to be heated at nighttime. This is waste of energy and it also makes the installation very complicated and expensive. To find a system, which can for example store the cold of the night and use that as a cooling media at daytime and vice versa, would be favourable. The authors describe the development and testing of the Heat Pac concept, which is based on phase change material heat storage, to meet these conditions.<<ETX>>","PeriodicalId":123164,"journal":{"name":"Proceedings of Intelec 94","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127151664","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}
引用次数: 2
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