RADIAL ELECTRODYNAMIC BEARING

摘要

A radial bearing 10, 11 for supporting a shaft of a rotating device is provided. The radial bearing 10, 11 comprises: an inductor 40 having an inductor axis 30, generating a magnetic field radial to said inductor axis having p pole pairs; a winding 70 having loops 100 disposed around a winding axis 35, magnetically coupled to the radial magnetic field, and connected in a closed circuit in such a manner that the net flux variation intercepted by the winding 70 when the inductor 40 and the winding 70 are in rotation with respect to each other is zero when the inductor axis 30 and the winding axis 35 coincide; and a gap 50 between the inductor 40 and the winding 70. The armature winding 70 comprises p-1 or p+1 pole pairs when p is larger than or equal to 1 and said armature winding 70 comprises one pole pair when p is equal to 0.