A Passive Permanent Magnetic Bearing With Increased Axial Lift Relative to Radial Stiffness

Four different magnet bearing configurations, with varying number of combined radially and axially magnetized rings, are studied both experimentally using the modeling framework MagTense. First, optimal vertical position ring is determined numerical model. Then, model validated experimental data. Finally, we show that a where rotor stator each consist single magnets has smallest radial force per axial lift at an air gap 1 mm. For this bearing, ratio here 0.383 times same without ring.