Magnetal - Unique Electrodynamic Bearings - Zero Friction Solutions -

Outer Rotor Design

Electrodynamic Magnetic Bearing - Zero Friction Solutions

The bearing to the right is a two (magnet) row outer rotor bearing implemented in a flywheel design. Please not that a motor-generator has been implemented in the construction.

By adding extra magnet rows the characteristics can be changed towards better load capacity and stiffness.Adding an extra third row to bearing on the picture double the load capacity and stiffness. Adding a fourth magnet would provide yet another doubling of load- and stiffness characteristics.

As described in the movie on the front page the bearing repelling forces are increasing with increased displacement. The stiffness on the other hand remains constant and is thus independent of the displacement. This gives the bearing yet another benefit over traditional bearing since it enables a very easy rotor-dynamic calculation/simulation.

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