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INTELEC - 1979 International Telecommunications Energy Conference最新文献

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Temperature Behavior of Ni Cad Batteries and the Determination of their "State of Charge" States 镍镉电池的温度行为及其“充电状态”的测定
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793638
Aron Levy
{"title":"Temperature Behavior of Ni Cad Batteries and the Determination of their \"State of Charge\" States","authors":"Aron Levy","doi":"10.1109/INTLEC.1979.4793638","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793638","url":null,"abstract":"A research task was undertaken to evaluate the behavior of Ni Cad batteries under extreme temperature conditions. Identical tests were repeatedly performed in order to record the spread of terminal voltages and discharge capacity during (a) initial conditions, (b) after several charge/discharge cycles, and (c) under different temperature conditions. The test proved that significant degradation of performance took place due to exposure to high and low temperatures and due to repeated charge/discharge cycles. Furthermore, it showed that the state of charge status cannot be extracted from the terminal voltages since the variations in this parameter were extremely large.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"34 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":"123289741","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
Wind Power - Its Potential for the Telecommunications Industry 风力发电-电讯行业的潜力
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793672
B. Wiebe
{"title":"Wind Power - Its Potential for the Telecommunications Industry","authors":"B. Wiebe","doi":"10.1109/INTLEC.1979.4793672","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793672","url":null,"abstract":"In 1978, Bristol Aerospace presented a Paper detailing the work which was in progress on the industrial wind power program as sponsored by the National Research Council in Canada. This follow-up Paper will report on the preliminary operational results of systems undergoing In-Situ Familiarization Tests. The program has involved the following firms: Alberta Government Telephones, Saskatchewan Telecommunications, Manitoba Telephones, CN/CP Telecommunications, Canadian Broadcasting Corporation, Shell Canada, and Newfoundland Telephones. In this manner, the Paper will examine the cost benefit potential of a wind power system. A history of the test program to date including installation results, operational results and the reduction of diesel fuel consumption will be presented. The final topic will centre around a look at the general response from industry, as involved in the program, in association with a statement as to future developments and system availability.","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":"131199790","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
Energy Management of Telecommunications AC Reserve Power Plants 通信交流备用电厂能源管理
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793655
E. A. Hake, A. Morr
{"title":"Energy Management of Telecommunications AC Reserve Power Plants","authors":"E. A. Hake, A. Morr","doi":"10.1109/INTLEC.1979.4793655","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793655","url":null,"abstract":"Methods are examined for saving energy costs through the management of energy systems typical of telephone buildings; namely, the AC reserve plants. Analysis indicates reduced electric utility costs may be realized by using the AC reserve plant for peak shaving.","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":"126828425","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
Programmable L.F. Function Generator using High Frequency P.W.M. Techniques 使用高频P.W.M.技术的可编程L.F.函数发生器
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793678
R. Hayward
{"title":"Programmable L.F. Function Generator using High Frequency P.W.M. Techniques","authors":"R. Hayward","doi":"10.1109/INTLEC.1979.4793678","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793678","url":null,"abstract":"The success of the application of switched mode techniques to d.c. power supplies has naturally led to developments of these techniques for the generation of a.c. voltages. Recently attention has been given to the use of microprocessors to program the outputs of these function generators. A low frequency programmable function generator has particular application in the telephone industry, where there is a requirement for sinusoidal tone wave forms at various frequencies between 16 2/3 Hz and 60 Hz to operate telephone ringing circuits. Other a.c. or pulsed d.c. functions may be required to operate relays in coin box mechanisms, and for automatic number identification. This paper discusses the concept of a bi-polar switching regulator and examines its properties in relation to the generation of d.c. and low frequency a.c. functions. Implementation problems are discussed, and the programmable function generator used in Northern Telecom's DMS 100 is briefly described.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"88 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":"115640804","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
A Buck/Boost Power System for Telecom Australia 澳大利亚电信Buck/Boost电力系统
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793671
N. Thuan
{"title":"A Buck/Boost Power System for Telecom Australia","authors":"N. Thuan","doi":"10.1109/INTLEC.1979.4793671","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793671","url":null,"abstract":"The Buck/Boost Power System is a new telephone power supply capable of providing a fully regulated output under either a.c. mains operation or battery operation. This article discusses design objectives, principles and operation, technical problems to be overcome and economic aspects of the Buck/Boost System. It also describes the first large installation based on the buck/boost system for powering a stored programme controlled (SPC) trunk switching centre, and indicates future applications of this new generation of power equipment.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"13 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":"115137161","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
Some Special Devices used in the New Type of Power Plants for the Italian Telecommunication Systems 意大利电信系统新型电厂中使用的一些特殊装置
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793667
M. Grossoni, F. Molinari
{"title":"Some Special Devices used in the New Type of Power Plants for the Italian Telecommunication Systems","authors":"M. Grossoni, F. Molinari","doi":"10.1109/INTLEC.1979.4793667","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793667","url":null,"abstract":"The paper describes some devices specially developed for the new type of centralized power plants for telecommunication equipment used by SIP, Italian Telephone Company. The remote rectifier's output power limitation device is of great usefulness in the power rating of the primary power plant, in particular of emergency generating sets. The selective supervising devices are an integral part of the power plants policy that requires, for reliability reasons, parallel operating stand-by units.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"41 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":"122801616","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
Non-Destructive Testing of Telephone Stationary Batteries 电话固定电池的无损检测
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793602
J. Wadden, D. Reid, I. Clasa
{"title":"Non-Destructive Testing of Telephone Stationary Batteries","authors":"J. Wadden, D. Reid, I. Clasa","doi":"10.1109/INTLEC.1979.4793602","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793602","url":null,"abstract":"This paper describes a technique for monitoring positive plate growth of normal production lead-acid cells without damaging the cell. The measurement is done in conjunction with a temperature-accelerated aging program. The method is based upon the use of a `reflectoscope', a sonar based instrument which can externally measure the distance between the end of each positive plate and the inside jar wall. The positive plate growth can then be monitored and the rate of growth calculated. A procedure is outlined for calibration of the instrument to this intended use. Typical plate growth measurements are given for commercially available lead-calcium and lead-antimony telephone batteries. The possible application of the reflectoscope in the field and some related problems (for measuring some cells) are discussed.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"21 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":"130123691","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: 4
A PWM Inverter with an Improved Output Voltage Waveform 一种具有改进输出电压波形的PWM逆变器
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793663
C. Arikan, Fikret Olgut
{"title":"A PWM Inverter with an Improved Output Voltage Waveform","authors":"C. Arikan, Fikret Olgut","doi":"10.1109/INTLEC.1979.4793663","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793663","url":null,"abstract":"A three-phase variable-frequency inverter using PWM technique has been designed and constructed in which the notch positions are optimized to eliminate a fixed number of harmonics. The control circuitry designed to generate optimum notch positions uses digital techniques contrary to analog modulation techniques used in classical PWM which results in less harmonic distortion in the output waveform. The experimental results obtained are in close agreement with the theoretical predictions.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"66 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":"116014874","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
Application of 40 KW Power Darlington Transistors in Large DC to DC Converters and Motor Speed Control 40kw功率达林顿晶体管在大直流中的应用，用于直流变换器和电机调速
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793611
MarvinW . Smith
{"title":"Application of 40 KW Power Darlington Transistors in Large DC to DC Converters and Motor Speed Control","authors":"MarvinW . Smith","doi":"10.1109/INTLEC.1979.4793611","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793611","url":null,"abstract":"General Electric Company has developed the D67D (a high speed darlington) power transistor rated at 400 Volts (sustaining) and collector currents of 100 Amps continuous (160 Amps peak). The devices are monolithic and utilize a new power package which is available in the isolated (R¿JC = .4°C/W max.) and non-isolated (R¿JC = .25°C/W max.) collector configurations. Some typical applications for the device would be for motor control and switching power supplies. Some design considerations are detailed which show the D67D as the power switch for a (1) push-pull output stage, (2) buck converter, and (3) inverter for a 10 H.P. induction motor.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"25 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":"126424482","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
100 Watt Liquid Fueled Thermoelectric Generator 100瓦液体燃料热电发电机
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793631
T. Nystrom, S. Morita
{"title":"100 Watt Liquid Fueled Thermoelectric Generator","authors":"T. Nystrom, S. Morita","doi":"10.1109/INTLEC.1979.4793631","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793631","url":null,"abstract":"A thermoelectric generator has been developed especially for the low power consumption radio equipment now being used to provide communication systems in developing areas. The new generator uses the same thermoelectric converter as used in Global's propane fueled Model 5120 which has proven high reliability and long life as established from seven years of field service throughout the world. However it incorporates a new burner which will operate on any of the commonly available liquid fuels including diesel fuel, kerosene, jet fuel or gasoline. The burner has only two moving parts, the fuel pump and combustion air blower, and is expected to operate unattended for one year between maintenance. The output power is 100 watts at 6-8 volts and 90 watts with dc-dc conversion at 12, 24 or 48 volts. Multiple units can be used in series or parallel combination to provide higher power levels. The fuel consumption is less than .3 kg per hour so the system efficiency is greater than 300 watt hours per kg. System description, performance characteristics, and test data are presented.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"6 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":"125797830","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
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