Vibration Optimized Magnetic Rotor Suspension with Individual Permanent Magnets

An investigation of a vibration-optimized arrangement of individual permanent magnets for radial magnetic suspension of a machine rotor is presented. The individual permanent magnets are arranged to form a ring on the rotor which is aligned with an adjacent ring formed by individual permanent magnets on the stator. In contrast to previous work, a spacing between the individual permanent magnets is explicitly considered to facilitate the incorporation of the magnet arrangement into a 3D printed machine design. The investigation is performed with finite element analysis using open source software GetDP and Gmsh.