Characteristics of Thrust Magnetic Bearing and its Effect on Radial Ones in the System

Static and dynamic mechanical characteristics of a thrust magnetic bearing are studied due to the runner disk inclination. Application refers to a thrust magnetic bearing for a turbo-expander/compressor. The static tilt of the runner disk has remarkable influence on the mechanical characteristics of thrust magnetic bearing, changes the static load distribution between two radial magnetic bearings and exerts violent coupling effect among a thrust magnetic bearing and two radial magnetic bearings. Such a finding can be used for the coupled electromechanical dynamics analysis of rotor system equipped with magnetic bearings.