Melt-textured, bulk high-temperature superconductors (HTS) are finding increasing uses n superconducting bearings, flywheel energy storage, and other levitational applications. The article has focused almost exclusively on rotating HTS- bearings, but similar physics applies to linear HTS bearings. The stable levitational force suggests application in magnetically levitated conveyor systems in clean-room environments where high-purity requirements mandate no mechanical contact. Linear HTS bearings have also been proposed for microactuators. Some researchers have built small models of magnetically levitated vehicles in which the high-temperature superconductor is carried on board the vehicle and is levitated by a repulsive interaction with a magnetized track. On a larger scale, the use of trapped-field bulk high-temperature superconductors has been suggested as a flux source for an electromagnetic levitation system for high-speed maglev. Most of the levitation applications described in this article have used bulk high-temperature superconductors because they seem to be further advanced for purposes of levitation. However, HTS wires are also developing at a rapid rate, and the future may see their use in levitation applications, such as the substitution for LTS wires in maglev train transport or for magnetic suspension in wind tunnels.
Using high-temperature superconductors for levitation applications
Verwendung von Hochtemperatur-Supraleitern für Magnetschwebebahnen und
JOM - The Journal of the Minerals, Metals and Materials Society ; 51 , 7 ; 13-18
1999
6 Seiten, 7 Bilder, 77 Quellen
Article (Journal)
English
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