Superconducting Magnetic Bearings Using High Tc Superconducting Bulks and Coils, and The Application

Superconducting magnetic bearings (SMBs) are usually composed of superconductors and permanent magnets (PMs). These SMBs are based on pinning forces between superconductors and PMs. In this paper, new types of SMB-I and SMB-II are proposed. These SMB-I and SMB-II are composed of superconductor and superconducting coils. To compare SMB-I with SMB-II, impulse responses in the vertical and horizontal directions are studied. Then, natural damped vibration curves for impulse responses are observed. The damping coefficient for SMB-II is larger than other SMB-I.