Contents
1. Introduction
2. Theoretical background
2.1 Calculating the load-carrying capacity
2.2 Obtaining the required direction for the lines of force
2.3 Calculating the load-carrying capacity for a sinusoidal surface-current density
3. Active magnetic bearings
3.1 The magnetic configurations
3.2 Calculation of the radial load-carrying capacity
3.3 Calculation of the length width ratio of the rotor
4. Dynamic stability of the control loops
4.1 Control with displacement feedback
4.2 Control with velocity feedback
5. Dynamic stability of the rotor
6. Summary