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Kosmos
Astronomia Astrofizyka
Inne

Kultura
Sztuka dawna i współczesna, muzea i kolekcje

Metoda
Metodologia nauk, Matematyka, Filozofia, Miary i wagi, Pomiary

Materia
Substancje, reakcje, energia
Fizyka, chemia i inżynieria materiałowa

Człowiek
Antropologia kulturowa Socjologia Psychologia Zdrowie i medycyna

Wizje
Przewidywania Kosmologia Religie Ideologia Polityka

Ziemia
Geologia, geofizyka, geochemia, środowisko przyrodnicze

Życie
Biologia, biologia molekularna i genetyka

Cyberprzestrzeń
Technologia cyberprzestrzeni, cyberkultura, media i komunikacja

Działalność
Wiadomości | Gospodarka, biznes, zarządzanie, ekonomia

Technologie
Budownictwo, energetyka, transport, wytwarzanie, technologie informacyjne

Roebel cables from REBCO coated conductors: a one-century-old concept for the superconductivity of the future

Energy applications employing high-temperature superconductors (HTS), such as motors/generators,
transformers, transmission lines and fault current limiters, are usually operated in the alternate
current (ac) regime. In order to be efficient, the HTS devices need to have a sufficiently low value
of ac loss, in addition to the necessary current-carrying capacity. Most applications are operated
with currents beyond the current capacity of single conductors and consequently require cabled
conductor solutions with much higher current carrying capacity, from a few kA up to 20–30 kA for
large hydro-generators. A century ago, in 1914, Ludwig Roebel invented a low-loss cable design for
copper cables, which was successively named after him. The main idea behind Roebel cables is to
separate the current in different strands and to provide a full transposition of the strands along
the cable direction. Nowadays, these cables are commonly used in the stator of large generators.
Based on the sa...

Kolekcje IOP - REVIEWS 2014/08/15 - 08:17 Czytaj