Skf Magnetic Mechatronics

Societe De Mecanique Magnetique

Eric Helene

Maurice L Brunet

Joaquim Da Silva

Eduardo Carrasco

Ulrich Schroeder

Frederic Ponson

Frédéric Ponson

Ramdane Lateb

A turbo-machine for compressing or expanding a fluid comprises a housing, a rotary shaft, an electric machine, an impeller mounted at an end of the rotary shaft, radial magnetic bearings, an axial magnetic bearing, an axial detector, radial detectors, a control circuit, and auxiliary bearings. An auxiliary bearing is integrated within a stator portion of the axial magnetic bearing and this stator portion of the axial magnetic bearing is located opposite a rotor armature of the axial magnetic bearing. The rotor armature is made of iron or of a material which is adapted to be attracted in a magnetic field and is constituted by a rear face of the impeller.

Compact turbomachine with magnetic bearings and auxiliary bearings

A rotary pump (PP) for taking in a liquid such as a hydrocarbon comprises a pump wheel ( ) secured to a rotor ( ) which is immersed in a portion of the liquid taken in by the pump. A motor ( ) having a stator element ( ) mounted in a case ( ) and a rotor element ( ) mounted on the rotor ( ) serves to cause the rotor ( ) to rotate about an axis ( ). Radial magnetic bearings ( ) and axial magnetic bearings ( ) support and guide the rotor ( ) inside an enclosure ( ). A jacket ( ) is provided to protect the stator element ( ) of the motor ( ) from the liquid. The pump is characterized in that the rotor ( ) has at least one groove ( ) in an outer surface that is covered by the liquid, particularly to reduce the inertial effects due to the liquid.

Rotary pump with immersed rotor

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Oissel, France

Eric Helene