Magnetic Levitation Force of Single Grained YBCO Materials

In-Gann Chen ； Jen-Chou Hsu ； Gwo Janm ； Chin-Chen Kuo ； Haw-Jer Liu ； M. K. Wu

《Chinese Journal of Physics》 36卷2S期 (1998/04) Pp. 420-427

並列摘要

The single grained Y-Ba-Cu-0 (YBCO) material exhibits attractive potential application with its magnetic levitation properties, i.e., Meissner effect. Recently, with the advance of materials processing techniques, such as Top-Seeding and Melt-Texturing (TSMT) method, very large single grained YBCO samples up to several centimeters in diameter can be produced. Each sample is capable of levitating over kilograms of weight. A HTS magnetic levitation (MagLev) transportation prototype capable of carries nearly 4 kg of weight has been constructed at National Cheng-Kung University (NCKU) to validate the concept of HTS-MagLev system based on Meissner effect. This HTS-MagLev is an inherent stable levitation system, unlike traditional MagLev system that requires sensors and feed-back circuits to dynamically adjust its unstable levitation position. In this report, the results of various magnetic levitation parameters, such as different permanent magnet configurations, relative levitation stability, levitation force, etc., as well as magnetic field intensity and distribution will be discussed.