SUPERCONDUCTING COUPLING DEVICE

A permanent magnet floats stably above a high T-c superconductor due t o levitation and transverse forces. These transverse interactions betw een an YBaCuO pellet and a permanent magnet structure are experimental ly studied in this paper. The different factors playing a part in the transverse forces are investigated. Several permanent magnet structure s have been chosen and experiments performed to compare these structur es in terms of maximal force and stiffness. The influence of magnetic field during cooling of the superconducting sample has been studied. A static torque coup ling has been built and tested. Six magnet-superco nductor sets are involved to develop a torque up to 3.3 N m. Good dyna mic behaviour with strong damping is obtained.