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INTELEC - 1979 International Telecommunications Energy Conference最新文献

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Lead-Acid Storage Batteries for Uninterrupted Power Supply (UPS) Applications 用于不间断电源(UPS)的铅酸蓄电池
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793633
H. Schaetzle, D. Boden
{"title":"Lead-Acid Storage Batteries for Uninterrupted Power Supply (UPS) Applications","authors":"H. Schaetzle, D. Boden","doi":"10.1109/INTLEC.1979.4793633","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793633","url":null,"abstract":"Lead-acid storage batteries are a vital part of any UPS installation. They supply the emergency power to the load in the event commercial power is interrupted or lost. Today's UPS batteries are specifically designed for their intended applications and differ significantly from those used in communication and switchgear service. Design considerations include plate thickness, separator and retainer materials, system voltage window and specific gravity of the electrolyte. The actual installed capacity of a UPS battery for high rate application can only be accurately determined prior to shipment if the battery is factory tested from float. Laboratory tests indicate that cells that have delivered their full fifteen minute capacity when discharged from open circuit will suffer significant capacity losses, forty percent or more, when discharged from a float condition simulating actual field operation.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"254 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123344614","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
Relationship Between Energy Costs and Minicomputers Architecture 能源成本与小型计算机结构的关系
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793656
J. Chabanne
{"title":"Relationship Between Energy Costs and Minicomputers Architecture","authors":"J. Chabanne","doi":"10.1109/INTLEC.1979.4793656","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793656","url":null,"abstract":"The evolution of electronic components in the computer field, especially increasing density and continuous reduction of the cost of processing and memorization integrated circuits, affects directly the design and development of equipments. The highest concentration of functions involves an increase in the specific power to be dissipated. This has to be taken into account when selecting the type of power supply. The purpose of this paper is to consider the question of power supplies for minicomputers and to determine the parameters necessary for optimizing energy costs per function.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121376242","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
Lead-Acid Battery Charge Process in Photovoltaic Applications 光伏应用中的铅酸蓄电池充电过程
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793637
D. J. Becker
{"title":"Lead-Acid Battery Charge Process in Photovoltaic Applications","authors":"D. J. Becker","doi":"10.1109/INTLEC.1979.4793637","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793637","url":null,"abstract":"This paper will describe some of the problems that arise when attempting to charge secondary storage batteries, of the lead-acid type, from an energy source such as a photovoltaic array. A description of the means generally used to charge a lead-acid. battery in a standard photovoltaic system is given, and a proposed series regulator \"smart\" type system which may be used to improve battery charging efficiency in photovoltaics is described. The paper will conclude with an experiment which compares the battery charging efficiency of the two systems.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"222 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122408525","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
The High Frequency (20 kHz) AC/DC Conversion by Chopping the Public AC Network and its Application to a Modular Universal Power Supply 公共交流网络斩波高频(20khz)交直流转换及其在模块化通用电源中的应用
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793669
A. Leclerc
{"title":"The High Frequency (20 kHz) AC/DC Conversion by Chopping the Public AC Network and its Application to a Modular Universal Power Supply","authors":"A. Leclerc","doi":"10.1109/INTLEC.1979.4793669","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793669","url":null,"abstract":"Technical progresses in the field of power transistor permit now a direct switching of AC mains voltage. It is the main object of this paper to present a modular rectifying set, including two to five switching rectifiers. The main technical points concerning this type of telecommunication power plant will be discussed, thas is the electromagnetic compatibility between these materials and the surrounding equipments and the relatively low reliability of the switching rectifier compared to the thyristor controlled rectifier with solutions chosen by the PTT Administration. Finally considerations are presented to compare from an economical point of view the cost of these equipments to older ones.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133547488","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
Solar versus Fuel Energy for Telecommunications 电信用太阳能与燃料能源
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793622
O. Kuhlmann
{"title":"Solar versus Fuel Energy for Telecommunications","authors":"O. Kuhlmann","doi":"10.1109/INTLEC.1979.4793622","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793622","url":null,"abstract":"Solar voltaic power systems are critically looked at from a user's point of view. A circuit configuration regarded suitable for use in powering radio link equipment is described. Early failure mechanisms of solar modules are listed and major requirements for solar cell encapsulation are given. A statement is ventured as to equipment reliability of a solar system. Careful selection, sizing and maintenance of solar system component parts are of utmost importance to secure continuous power availability throughout the year. Solar power systems are found to be a cost competitive alternative to the conventional dual-diesel approach for continuous loads up to around 200 W in areas within the latitude bands 15° to 3° N and 15° to 30° S.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133901833","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
Peak Shaving via Emergency Generator 通过应急发电机调峰
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793652
C. Hayden
{"title":"Peak Shaving via Emergency Generator","authors":"C. Hayden","doi":"10.1109/INTLEC.1979.4793652","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793652","url":null,"abstract":"The use of standby generators as peak shaving devices pays dividends in several ways. The practice of using the generators as peak shavers reduces the demand rate, eliminates the need to \"test\" the generator periodically, utilizes the fuel in a time frame which prevents contamination and better utilizes the capital investment. This paper discusses the methodology used to accomplish this.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131905548","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
PWM Controller with Single Core Multivibrator 带有单核多谐振荡器的PWM控制器
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793641
K. Harada, H. Sakamoto, A. Katsuki
{"title":"PWM Controller with Single Core Multivibrator","authors":"K. Harada, H. Sakamoto, A. Katsuki","doi":"10.1109/INTLEC.1979.4793641","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793641","url":null,"abstract":"A new PWM controller with simple structure is presented. This controller consists of a modified transistor-core multivibrator having a single saturable core and is capable of changing the oscillation frequency with ease by a low control voltage. Accordingly, if this controller is applied to a small DC power supply or a feedback element of the switching regulator, a considerable reduction of the number of components is given in comparison with that of IC type. Furthermore, because the output signal has the nearly constant V/f ratio, the PWM controller is suitable for a simple speed control circuit of the small AC motor.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"21 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114084057","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
New Centralized Power Plant for the Supply of Traditional and Modern Telecommunication Systems 为传统和现代电信系统供电的新型集中式发电厂
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793666
L. Pini, M. Bonetti
{"title":"New Centralized Power Plant for the Supply of Traditional and Modern Telecommunication Systems","authors":"L. Pini, M. Bonetti","doi":"10.1109/INTLEC.1979.4793666","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793666","url":null,"abstract":"Developments in the telecommunication equipment require new centralized power plant policy. The paper describes the new type of power plant chosen by SIP, Italian Telephone Company, to face the telecomuunication equipment present and future requirements. A description of the plant is given together with the results of the first years of operation.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124757883","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
Cardiff Telephone Exchange - Total Energy Project 卡迪夫电话交换机-总能源项目
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793628
I. G. White
{"title":"Cardiff Telephone Exchange - Total Energy Project","authors":"I. G. White","doi":"10.1109/INTLEC.1979.4793628","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793628","url":null,"abstract":"The paper covers the basic factors which were taken into account when considering the installation of a Total Energy System in a major communications centre. It also describes the main components of the plant which is currently being commissioned ready for service. Tentative conclusions are given suggesting some limitations to the more widespread use of Total Energy Systems in telecommunications buildings.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126097730","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
High-Power Ferroresonant Voltage Regulating Transformers 大功率铁谐振调压变压器
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793662
T. Wroblewski, A. Kusko
{"title":"High-Power Ferroresonant Voltage Regulating Transformers","authors":"T. Wroblewski, A. Kusko","doi":"10.1109/INTLEC.1979.4793662","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793662","url":null,"abstract":"Two-core Wroblewski ferroresonant transformers up to 25 kVA have been built for 1-phase, and up to 75 kVA for 3-phase, 60-Hz operation. These transformers are used for the isolation, regulation, and transient suppression of line voltage for computers and other data-processing equipment. The transformers have also been used for general service in overseas 50-Hz poorly regulated electric-supply systems. The Wroblewski structure serves for gaseous-discharge lamp ballasts, and more recently for high-power autotransformer or fully isolated output ferroresonant transformers. The butt and spline air gaps are used to adjust the range of input line voltage, the output voltage, and the waveform. The function and interconnection of the windings, the operation of the structures at high and low line-voltage conditions, waveforms and regulation curves will be described.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126541047","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
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