Determination of force and flux linkage characteristics of radial active magnetic bearings

The current and position dependence force and flux linkage characteristics of the studied radial active bearings are determined by the finite element computations in the entire operating range. Based on results of the performed computations the considerable impact of magnetic nonlinearities and cross coupling effects on properties of radial active magnetic bearings is established. The obtained characteristics are incorporated into the dynamic mathematical model, which is based on the current and position dependent radial forces and partial derivatives of flux linkages.