Reliability considerations of a fuel cell backup power system for telecom applications
Küçük Resim Yok
Tarih
2016
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Bv
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A commercial fuel cell backup power unit is tested in real life operating conditions at a base station of a Turkish telecom operator. The fuel cell system responds to 256 of 260 electric,power outages successfully, providing the required power to the base station. Reliability of the fuel cell backup power unit is found to be 98.5% at the system level. On the other hand, a qualitative reliability analysis at the component level is carried out. Implications of the power management algorithm on reliability is discussed. Moreover, integration of the backup power unit to the base station ecosystem is reviewed in the context of reliability. Impact of inverter design on the stability of the output power is outlined. Significant current harmonics are encountered when a generic inverter is used. However, ripples are attenuated significantly when a custom design inverter is used. Further, fault conditions are considered for real world case studies such as running out of hydrogen, a malfunction in the system, or an unprecedented operating scheme. Some design guidelines are suggested for hybridization of the backup power unit for an uninterrupted operation. (C) 2016 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Fuel Cell, Reliability, Telecom, Power Management, Backup Power, Fault, Energy Management-System, Fault-Tolerant Control, Dc/Dc Boost Converter, Ripple Current, Ups Applications, Vehicle, Model, Stack, Efficiency, Strategy
Kaynak
Journal of Power Sources
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
309
