Centring magnetic bearing with two groups of coils and permanent magnets on the stator and without permanent magnets on the rotor

摘要

The device has a rotor (R') movable around rotation axis, and forming a steel crown comprising a first mechanical support structure and rotor-mounted magnetic yokes (CR1 1, CR12) secured to the first mechanical support structure. A stator (S') comprises a second mechanical support structure and stator-mounted magnetic yokes (CS11, CS12) secured to the second mechanical support structure. Windings (B11, B11', B12, B12') are supplied with winding current. Windings and magnets (A11, A12) are assembled on the stator.