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Turn-Key Project During the Construction of the Telecommunication System in the Five New States of the Frg 新五州电信系统建设中的交钥匙工程
TELESCON '94 - The First International Telecommunications Energy Special Conference Pub Date : 1994-04-11 DOI: 10.1109/TELESC.1994.4794345
W. Rath
{"title":"Turn-Key Project During the Construction of the Telecommunication System in the Five New States of the Frg","authors":"W. Rath","doi":"10.1109/TELESC.1994.4794345","DOIUrl":"https://doi.org/10.1109/TELESC.1994.4794345","url":null,"abstract":"The political and economic reunification of Germnany in 1990 created a problem for the Deutsche Bundespost Telekom (Telekom). namely to update the totally uinsatisfactory, telecommuinication infrastructure of the new, federal states in the shortest possible time. The greatest challenge was the time factor in other words, the prov,ision of a comprehensive telecommunication system as quick]), as possible. There were two reasons why this was particularly imiportant: 1. The telecommiunication network in the newN states had to be technically as good as, or better than, that in the west. so that enitreprenieurs would not be deterred fromi invlesting. 2. For decades.. the people i-n the niewN states had miade do either with miultiple or party lines, or wvith no telephone at all. For political reasons, therefore, it was felt that the timec had come to bring them up to the level of their nieighibours in the west.","PeriodicalId":178715,"journal":{"name":"TELESCON '94 - The First International Telecommunications Energy Special Conference","volume":"368 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132465462","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
Integrated System Power for Radio Base Stations 无线基站综合系统电源
TELESCON '94 - The First International Telecommunications Energy Special Conference Pub Date : 1994-04-11 DOI: 10.1109/TELESC.1994.4794340
N. Backman, B. Zethraeus, Christer Wandel
{"title":"Integrated System Power for Radio Base Stations","authors":"N. Backman, B. Zethraeus, Christer Wandel","doi":"10.1109/TELESC.1994.4794340","DOIUrl":"https://doi.org/10.1109/TELESC.1994.4794340","url":null,"abstract":"Integrated System Power, (ISP) is used for systems where power supplies and electronics are placed together in the same rack. The advantages and disadvantages of this kind of power system is discussed. A high power density ISP-system for radio base stations in a GSM-system, RBS 200, is described The system consists of digitally controlled rectifiers, DC distribution and batteries. The whole system is supervised by a Power Control Unit.","PeriodicalId":178715,"journal":{"name":"TELESCON '94 - The First International Telecommunications Energy Special Conference","volume":"51 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114002170","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
Czech PTT Power Supply Laboratory 捷克PTT电源实验室
TELESCON '94 - The First International Telecommunications Energy Special Conference Pub Date : 1994-04-11 DOI: 10.1109/TELESC.1994.4794314
J. Sládeček, Jirl Tomanek
{"title":"Czech PTT Power Supply Laboratory","authors":"J. Sládeček, Jirl Tomanek","doi":"10.1109/TELESC.1994.4794314","DOIUrl":"https://doi.org/10.1109/TELESC.1994.4794314","url":null,"abstract":"The Power Supply Laboratory Is part of the organizational pattern of TESTCON whose full name is Technical Centre of Telecommunications and Posts Prague the former PTT Research Institute which is administered by the tinistbry of Economy of the Czech Republic. This laboratory closely cooperates with the Laboratory of Radio Reception Protection, the Laboratory of Electromagnetic Compatibility (EIC) specialized for the domain of EMI (Electromagnetic Interference) and the Laboratory of Electrical Safety and is linked to the Mletrological Centre (HIfrovd sttedisko) accredited by the Government. It should eventually ensure that only such power supplies will be commissioned for telecommunications which fulfil the strict requirements for electromagnetic compatibi lity (EMIC) and for other parameters affecting the reliability of the power supplies themselves as vell as of the related technology. As to regulatory instruments, use will be sade gradually of standards which correspond to the standards being introduced in the countries of the European Communities so as to make the Czech Republic fit into the EC also In this doma n.","PeriodicalId":178715,"journal":{"name":"TELESCON '94 - The First International Telecommunications Energy Special Conference","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123655325","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
Cost / Performance Considerations for 3 - Phase Input Current Shapers 三相输入电流整形器的成本/性能考虑
TELESCON '94 - The First International Telecommunications Energy Special Conference Pub Date : 1994-04-11 DOI: 10.1109/TELESC.1994.4794330
A. Pietkiewicz, D. Tollik
{"title":"Cost / Performance Considerations for 3 - Phase Input Current Shapers","authors":"A. Pietkiewicz, D. Tollik","doi":"10.1109/TELESC.1994.4794330","DOIUrl":"https://doi.org/10.1109/TELESC.1994.4794330","url":null,"abstract":"The paper discusses two alternative high Power Factor approaches to input current shaping in 3-phase rectifiers. The first approach gives higher value of Total Harmonic Distortion but is much simpler and thus cheaper, more efficient and more reliable. The second approach reduces the THD but is much more complicated and expensive. It is concluded that, from the user point of view, there is no need to accept these penalties to buy low value of THD.","PeriodicalId":178715,"journal":{"name":"TELESCON '94 - The First International Telecommunications Energy Special Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131050723","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: 6
BATLOG an Intelligent Battery Monitoring System BATLOG智能电池监测系统
TELESCON '94 - The First International Telecommunications Energy Special Conference Pub Date : 1994-04-11 DOI: 10.1109/TELESC.1994.4794337
R. Kiebling
{"title":"BATLOG an Intelligent Battery Monitoring System","authors":"R. Kiebling","doi":"10.1109/TELESC.1994.4794337","DOIUrl":"https://doi.org/10.1109/TELESC.1994.4794337","url":null,"abstract":"","PeriodicalId":178715,"journal":{"name":"TELESCON '94 - The First International Telecommunications Energy Special Conference","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117145244","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
International and European UPS Standards 国际和欧洲UPS标准
TELESCON '94 - The First International Telecommunications Energy Special Conference Pub Date : 1994-04-11 DOI: 10.1109/TELESC.1994.4794363
K. Boettger
{"title":"International and European UPS Standards","authors":"K. Boettger","doi":"10.1109/TELESC.1994.4794363","DOIUrl":"https://doi.org/10.1109/TELESC.1994.4794363","url":null,"abstract":"For around 20 years, the IEC static convertor standards committee has included a study group dealing with the formulation and development of IEC standards for UPS systems. In this connection, a corresponding European standardization project exists in CENELEC since 1988 with the aim of taking into account as quickly as possible, in the safety conditions for power supply devices in office equipment, recent technological developments in the UPS sector. This report deals with the results of the previous work and further standardization projects.","PeriodicalId":178715,"journal":{"name":"TELESCON '94 - The First International Telecommunications Energy Special Conference","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131277235","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
Nickel Metalhydride Batteries for Portable Telecommunication Equipment 便携式通信设备用金属氢化镍电池
TELESCON '94 - The First International Telecommunications Energy Special Conference Pub Date : 1994-04-11 DOI: 10.1109/TELESC.1994.4794335
J. Heydecke, I. Knop
{"title":"Nickel Metalhydride Batteries for Portable Telecommunication Equipment","authors":"J. Heydecke, I. Knop","doi":"10.1109/TELESC.1994.4794335","DOIUrl":"https://doi.org/10.1109/TELESC.1994.4794335","url":null,"abstract":"","PeriodicalId":178715,"journal":{"name":"TELESCON '94 - The First International Telecommunications Energy Special Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131398572","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
Turn-Key Projects Deutsche Telekom'S New Strategy for Rapidly Providing a Communications Infrastructure in Eastern Germany 交钥匙工程德国电信在德国东部快速提供通信基础设施的新战略
TELESCON '94 - The First International Telecommunications Energy Special Conference Pub Date : 1994-04-11 DOI: 10.1109/TELESC.1994.4794344
Johann NuBbaum
{"title":"Turn-Key Projects Deutsche Telekom'S New Strategy for Rapidly Providing a Communications Infrastructure in Eastern Germany","authors":"Johann NuBbaum","doi":"10.1109/TELESC.1994.4794344","DOIUrl":"https://doi.org/10.1109/TELESC.1994.4794344","url":null,"abstract":"Following Germany's reunification on October 3rd, 1990, Deutsche Telekom's experienced staff from the west embarked on the task of setting up 14 new telecommunications offices in eastern Germany. They quickly realized that the situation in eastern Germany was comparable to that in western Germany 20 years ago. Only 10 people out of a 100 had a telephone. In addition, the switching, transmission and cable technology dated back to the 1 930s.","PeriodicalId":178715,"journal":{"name":"TELESCON '94 - The First International Telecommunications Energy Special Conference","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125469716","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
The Problem of Power Supply of Urban and Rural Telephone Exchanges When Installing the Exchanges of Different Types at One Site the Experience of Solving these Problems at the Enterprises of the Russian Ministry of Communication 城乡电话交换机在同一站点安装不同类型交换机时的供电问题俄罗斯通信部企业解决这些问题的经验
TELESCON '94 - The First International Telecommunications Energy Special Conference Pub Date : 1994-04-11 DOI: 10.1109/TELESC.1994.4794348
A. Golubev, J. Fedosimov, O. Chekster
{"title":"The Problem of Power Supply of Urban and Rural Telephone Exchanges When Installing the Exchanges of Different Types at One Site the Experience of Solving these Problems at the Enterprises of the Russian Ministry of Communication","authors":"A. Golubev, J. Fedosimov, O. Chekster","doi":"10.1109/TELESC.1994.4794348","DOIUrl":"https://doi.org/10.1109/TELESC.1994.4794348","url":null,"abstract":"Extension of existing communication entities is often confronted with power supply problems relative to telecommunication equipment with different power supply requirements. several off-line power plants for a single entity are not reasonable in most cases. What are the ways to resolve the problem? This paper answers to this and some other questions. It presents compatibility analysis for power circuits of most popular exchange types, experimental results, examples of power supply systems arranged on Russia communication plants.","PeriodicalId":178715,"journal":{"name":"TELESCON '94 - The First International Telecommunications Energy Special Conference","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129294150","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
Zero-Voltage Soft-Switched PWM DC-DC Power Converter Modification Operating at Reduced Conduction Losses for Distributed Power Supply 零电压软开关PWM DC-DC功率变换器的改进，运行在低传导损耗的分布式电源
TELESCON '94 - The First International Telecommunications Energy Special Conference Pub Date : 1994-04-11 DOI: 10.1109/TELESC.1994.4794372
M. Michihira, S. Hamada, M. Nakaoka
{"title":"Zero-Voltage Soft-Switched PWM DC-DC Power Converter Modification Operating at Reduced Conduction Losses for Distributed Power Supply","authors":"M. Michihira, S. Hamada, M. Nakaoka","doi":"10.1109/TELESC.1994.4794372","DOIUrl":"https://doi.org/10.1109/TELESC.1994.4794372","url":null,"abstract":"An improved soft-switching PWM full-bridge DC-DC converter is presented. This employs a tapped inductor for low-pass filter to minimize a circulating current flowing through the transformer and switching devices. By using the tapped inductor and a saturable reactor(s), the converter achieves soft-switching with both low commutating and low circulating currents resulting in low switching and conduction losses. The effective performance of the converter is experimentally confirmed with a 100KHz-500W breadbord.","PeriodicalId":178715,"journal":{"name":"TELESCON '94 - The First International Telecommunications Energy Special Conference","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126549580","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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