21st International Telecommunications Energy Conference. INTELEC '99 (Cat. No.99CH37007)最新文献

Full-load-range-ZVS hybrid DC-DC converter with two full-bridges for high-power battery charging 全负载范围- zvs混合DC-DC转换器，具有两个全桥，用于大功率电池充电

21st International Telecommunications Energy Conference. INTELEC '99 (Cat. No.99CH37007) Pub Date : 1999-12-01 DOI: 10.1109/INTLEC.1999.794099

R. Ayyanar, N. Mohan

引用次数: 17

A new 12 kW three-phase impulse high power factor AC-DC converter with regulated output voltage for rectifier units 一种新的12千瓦三相脉冲高功率因数交流-直流变换器，输出电压可调，用于整流装置

21st International Telecommunications Energy Conference. INTELEC '99 (Cat. No.99CH37007) Pub Date : 1999-12-01 DOI: 10.1109/INTLEC.1999.794076

F. D. de Seixas, I. Barbi

引用次数: 20

Single-power-stage three-phase AC-DC-DC converter with power factor correction 带功率因数校正的单功率级三相AC-DC-DC变换器

21st International Telecommunications Energy Conference. INTELEC '99 (Cat. No.99CH37007) Pub Date : 1999-06-09 DOI: 10.1109/INTLEC.1999.794077

D. Weng, S. Yuvarajan

引用次数: 1

Design of a 200 amp telecom rectifier family using 50 amp DC-DC converters 采用50安培DC-DC转换器的200安培电信整流器系列的设计

21st International Telecommunications Energy Conference. INTELEC '99 (Cat. No.99CH37007) Pub Date : 1999-06-09 DOI: 10.1109/INTLEC.1999.794031

J. Elek, D. Knurek

{"title":"Design of a 200 amp telecom rectifier family using 50 amp DC-DC converters","authors":"J. Elek, D. Knurek","doi":"10.1109/INTLEC.1999.794031","DOIUrl":"https://doi.org/10.1109/INTLEC.1999.794031","url":null,"abstract":"Design of three phase 208/240 Vac, 380/415 Vac, and a 480 Vac input, 54 V dc/200 Adc output telecom rectifiers using the same DC-DC converters is described. The 208/240 Vac rectifier has four 50 Amp DC-DC converters connected in parallel at the inputs and outputs. The DC-DC converters utilize current mode control to insure equal load sharing between DC-DC converters. To allow the use of the same DC-DC converters in a 380 or 480 Vac input design, a split input capacitor bank is utilized. The 480 Vac rectifier has the same four 50 Amp DC-DC converters connected in parallel at the output; at the input, a split capacitor bank is used with two converters across each input capacitor. With a split input capacitor bank, to maintain voltage balance on the input capacitors and equal load sharing between DC-DC converters, current mode control alone is inadequate. A capacitor bank balance control loop was developed to insure that the input capacitor's voltage and the DC-DC converter's output currents remain balanced. The mechanism causing the split input capacitor bank to unbalance is discussed and the bank balance circuit is presented. Finally, results obtained from a 480 Vac input, 54 V dc/200 A dc output telecom rectifier are used to verify the operation of the bank balance circuit. Also, the advantages and disadvantages of using multiple DC-DC converters in different series/parallel combinations are discussed.","PeriodicalId":215980,"journal":{"name":"21st International Telecommunications Energy Conference. INTELEC '99 (Cat. No.99CH37007)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115902623","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

Comparison of UPS topologies based on high frequency transformers for powering the emerging hybrid fiber-coaxial networks 基于高频变压器为新兴光纤-同轴混合网络供电的UPS拓扑比较

21st International Telecommunications Energy Conference. INTELEC '99 (Cat. No.99CH37007) Pub Date : 1999-06-09 DOI: 10.1109/INTLEC.1999.794065

H. Pinheiro, P. Jain

引用次数: 9

Estimation of VRLS battery capacity using the analysis of the coup de fouet region 基于突发区域分析的VRLS电池容量估算

21st International Telecommunications Energy Conference. INTELEC '99 (Cat. No.99CH37007) Pub Date : 1999-06-09 DOI: 10.1109/INTLEC.1999.794034

P. E. Pascoe, A. Anbuky

引用次数: 14

Automatic oil leak detection system for an underground tank 地下油罐自动漏油检测系统

21st International Telecommunications Energy Conference. INTELEC '99 (Cat. No.99CH37007) Pub Date : 1999-06-09 DOI: 10.1109/INTLEC.1999.794084

S. Fujita, K. Fujiwara, J. Sumita, Y. Konya, S. Muroyama

{"title":"Automatic oil leak detection system for an underground tank","authors":"S. Fujita, K. Fujiwara, J. Sumita, Y. Konya, S. Muroyama","doi":"10.1109/INTLEC.1999.794084","DOIUrl":"https://doi.org/10.1109/INTLEC.1999.794084","url":null,"abstract":"This paper describes an automatic oil leak detection system which can detect accidental oil leaks at an early stage by continuously and remotely monitoring the underground tank that stores oil for standby engine generators. The engine generator is a regular power supply of an emergency backup power supply for telecommunication facilities. The system is made up of a liquid level meter, an oil leak detection sensor and measurement/monitoring equipment for measuring the amount of oil and monitoring the leak. The liquid level meter measures the amount of oil stored in the tank. Oil leaks from the tank are automatically detected by the oil leak detection sensor. The measurement/monitoring equipment displays the amount of oil on a LCD, and regularly as well as upon demand forwards this information to the remote monitoring center. Moreover, this equipment displays the warnings on both the LCD and a LED, and forwards warnings such as oil leaks to the remote monitoring center. The introduction of this system will help detect accidental oil leaks at an early stage. This system is expected to reduce or eliminate the need for maintenance checks, greatly reducing working hours and expenditures required for the maintenance of the underground tanks.","PeriodicalId":215980,"journal":{"name":"21st International Telecommunications Energy Conference. INTELEC '99 (Cat. No.99CH37007)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127891781","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

Unified model of the asymmetrical half-bridge converter for three important topological variations 非对称半桥变换器三种重要拓扑变化的统一模型

21st International Telecommunications Energy Conference. INTELEC '99 (Cat. No.99CH37007) Pub Date : 1999-06-09 DOI: 10.1109/INTLEC.1999.794101

L. Krupskiy, V. Meleshin, A. Nemchinov

引用次数: 12

A novel approach to the design of three-phase AC/DC power converters with unity power factor 一种设计三相单位功率因数AC/DC电源变换器的新方法

21st International Telecommunications Energy Conference. INTELEC '99 (Cat. No.99CH37007) Pub Date : 1999-06-09 DOI: 10.1109/INTLEC.1999.794030

M. Karlsson, C. Thorén, T. Wolpert

引用次数: 14

A new method of measuring earth resistance applicable to mutually bonded earth electrode systems 一种适用于互接接地电极系统的接地电阻测量新方法

21st International Telecommunications Energy Conference. INTELEC '99 (Cat. No.99CH37007) Pub Date : 1999-06-09 DOI: 10.1109/INTLEC.1999.794109

N. Izumo, S. Takagi, Y. Kishimoto, S. Muroyama

引用次数: 2