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INTELEC - 1979 International Telecommunications Energy Conference最新文献

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Battery Plants with Built-in Voltage Test Capabilities 内置电压测试功能的电池厂
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793603
R. Plow
{"title":"Battery Plants with Built-in Voltage Test Capabilities","authors":"R. Plow","doi":"10.1109/INTLEC.1979.4793603","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793603","url":null,"abstract":"A total battery plant system consisting of rectifier/chargers and a voltage control and distribution bay is discussed. The rectifier/chargers each have built-in provisions for testing and adjusting their high and low voltage alarms and their high voltage shutdowns without removing them from service or affecting their outputs during the testing sequence. Likewise, the voltage control and distribution bay discussed, contains provisions for cycling its voltage related alarms and end cell controls without disturbing the plant operation. Instrumentation is totally digital to assure accuracy in adjustments and ease in reading.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"3 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":"134180605","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
Future Trends of DC Power Plants 直流发电厂的未来趋势
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793595
C. B. A. Gennas
{"title":"Future Trends of DC Power Plants","authors":"C. B. A. Gennas","doi":"10.1109/INTLEC.1979.4793595","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793595","url":null,"abstract":"In this paper an attempt is made to derive some major future trends for telecommunication power plants out of technological progress and some of the worldwide political processes. The main stress is laid on trends of some degree of universal applicability and thus detailed analysis of e.g. circuit solutions is avoided. General trends, system trends and trends for system components like rectifiers, batteries and converters are treated.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"32 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133002640","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 Performance Line Voltage Regulator 高性能线路稳压器
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793661
D. Griffith
{"title":"High Performance Line Voltage Regulator","authors":"D. Griffith","doi":"10.1109/INTLEC.1979.4793661","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793661","url":null,"abstract":"A new high performance class of line voltage regulators is introduced for application to computer and other communication type loads. It utilizes thyristors to smoothly buck or boost the input voltage to the proper level to compensate for variations in input voltage or load, and maintains plus or minus 1/2% output voltage regulation. Correction to within 5% of normal voltage is possible within 1 cycle after a step input or load change. The output harmonics introduced by the thyristor control are attenuated to 5% or less by the use of a unique parametric filter which permits stable operation even with severely non-linear loads. Configurations for single and three phase service are described. Effects of load unbalance and overload are discussed. Provisions for attenuation of input over-voltage transient is made with an accessory transient suppression circuit. Initial experience in applying this regulator in uninterruptible power systems is related.","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":"134144480","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
Power Supplies for International Telecommunications 国际电信电源
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793629
W. T. Grant
{"title":"Power Supplies for International Telecommunications","authors":"W. T. Grant","doi":"10.1109/INTLEC.1979.4793629","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793629","url":null,"abstract":"Throughout the World, the requirements for automonous power supplies for telecommunication purposes are many and varied. This paper outlines the criteria to be considered when selecting power plants and identifies two major fields of application. Modular design of Plant and its installation in environmentally hostile conditions is considered and the affect of climate on power systems indicated. Design parameters for an integrated power system, derived from international experience with both modular and conventional power plant, are included. Throughout, the paper emphasises the necessity for a high level of power plant reliability and demonstrates the action taken to maintain an economic equilibrium by optimising integrated design and manufacture with installation, commissioning and operational efficiency.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"98 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":"133616453","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
Telecommunications Power Supply System in the New International Telecommunication Building in Japan 日本新国际电信大厦的通信供电系统
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793668
H. Yamaguchi, H. Yoshida
{"title":"Telecommunications Power Supply System in the New International Telecommunication Building in Japan","authors":"H. Yamaguchi, H. Yoshida","doi":"10.1109/INTLEC.1979.4793668","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793668","url":null,"abstract":"To meet the increasing demands of international telecommunications in Japan, 32-storied building (KDD Building) was constructed in Tokyo in 1974. In order to feed power to the telecommunication equipments, the constant voltage and constant frequency uninterruptible power plant of 4000 kVA which will meet the demand of power consumption required for the future increase of telecommunication equipments was decided to be installed in the basement. AC power generated in this power plant is fed to the telecommunication equipment floors by distribution trunk lines where the AC power is converted into AC or DC power required for each telecommunication equipment. This paper describes the design, configuration and reliability of the telecommunications power supply system (UPS).","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"111 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":"115158488","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 Current Source Inverter for UPS 用于UPS的电流源逆变器
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793657
S. Dewan, M. Agu
{"title":"A Current Source Inverter for UPS","authors":"S. Dewan, M. Agu","doi":"10.1109/INTLEC.1979.4793657","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793657","url":null,"abstract":"An uninterruptible power supply (UPS) system using a current source inverter is proposed. A single phase and a three phase load commutated current source inverter suitable for this UPS system is presented. The load commutation is achieved by selecting the output filter to maintain a net leading power factor at the inverter output over the operating load range. A steady state analysis of the inverter power circuits is given. The analysis is based on using the harmonic series of the inverter output current to obtain the circuit voltages and currents. The theoretical results presented in this paper are verified on experimental models for both the single phase and the three phase inverters.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"24 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":"134147302","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
Sinusoidal Voltage Converter Controlled by Amorphous Cores 非晶磁芯控制的正弦电压变换器
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793659
K. Harada, K. Murata
{"title":"Sinusoidal Voltage Converter Controlled by Amorphous Cores","authors":"K. Harada, K. Murata","doi":"10.1109/INTLEC.1979.4793659","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793659","url":null,"abstract":"A simple and reliable PWM inverter to generate sinusoidal wave of constant voltage and variable frequency is presented. In the control circuit of this inverter, amorphous cores are used to produce PWM wave. These cores have three kinds of windings, that is, the common windings, the bias winding and the output windings. The bias winding gives each core a different amount of ac mmf to decide the order of a flux varying. The values of the switching angles are decided by the number of layers of amorphous tape and the supply voltage to the common windings wound on all cores. Output voltage is regulated by the feedback. The frequency change is compensated by an integrator with a signal made of induced voltages of the core unit.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"17 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":"133427782","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
A Biased Core DC - DC Converter 一种偏心DC - DC变换器
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793640
J. A. Bassett
{"title":"A Biased Core DC - DC Converter","authors":"J. A. Bassett","doi":"10.1109/INTLEC.1979.4793640","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793640","url":null,"abstract":"The design of a reliable DC - DC converter requires knowledge of the stress levels on critical components under worst case conditions. Although specifications define the steady state and transient limits for influence quantities, the performance of converter circuits during normal transitions between operating states can result in high stress conditions. The variability of component parameters adds a further degree of uncertainty which makes reliability predictions difficult. This paper describes a converter for high energy applications where a knowledge of the flux density at the beginning of each power cycle is assured.","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":"127162205","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
Principles and Systems for Power Supply of the Swedish Digital Telephone Network 瑞典数字电话网供电原理与系统
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793664
K.E. Smedman, K. Wiren
{"title":"Principles and Systems for Power Supply of the Swedish Digital Telephone Network","authors":"K.E. Smedman, K. Wiren","doi":"10.1109/INTLEC.1979.4793664","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793664","url":null,"abstract":"The Swedish Telecommunications Administration - known in Sweden as Televerket - has one of the oldest telephone networks in the world. Advanced product development has enabled very high reliability values to be attained. It has therefore been possible to maintain costs and rates' at a low level. Changeover to digital technique will take place at an accelerated pace by replacement of older equipment. For technical reasons and from the subscribers' viewpoint, it has proved most appropriate for the introduction of the technique not to take place at the level of large exchanqes only, but more or less simultaneously at all levels in the network. The paper will outline the current state of development. It is also a follow-up and continuation of the Swedish contribution to \"The state of the art\" session at Intelec 1978.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"52 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":"126458389","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
Solar Photovoltaic System to Feed a Radio Link of Unusual Length 太阳能光伏系统将提供异常长度的无线电链路
INTELEC - 1979 International Telecommunications Energy Conference Pub Date : 1979-11-01 DOI: 10.1109/INTLEC.1979.4793625
G. Tartara
{"title":"Solar Photovoltaic System to Feed a Radio Link of Unusual Length","authors":"G. Tartara","doi":"10.1109/INTLEC.1979.4793625","DOIUrl":"https://doi.org/10.1109/INTLEC.1979.4793625","url":null,"abstract":"Telettra, a private company of the FIAT group operating in telecommunications, designed and is about to finish the installation of a high capacity, line-of-sight radio link over the Red Sea, i.e. between Saudi Arabia and Sudan. The study, design and construction of long over-sea's microwave links have been a traditional part of Telettra's activity for the last 25 years. The design in question is based upon original Telettra technologies and has been given preference to over other solutions such as undersea's cables or troposcattering radio links by its advantages such as functionality, reliability and cost. An outstanding feature is formed by photovoltaic generators used to feed the repeater stations situated in mountainous zones at a height of more than twothousand meters. As far as we know these solar generators are the most powerful ones so far used to feed a telecommunication system. After a short introduction to the link this paper describes the main characteristics of the plant and the design data of the photovoltaic system.","PeriodicalId":177302,"journal":{"name":"INTELEC - 1979 International Telecommunications Energy Conference","volume":"36 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":"124546726","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
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