Patent ID: 8796894
Filing Date: 2014-08-05
Classification: F16C,H02K

Abstract:
1. A magnetic bearing electromagnetic actuator comprising: a body having a rotational axis; a first pole residing apart from the body, the first pole adjacent a first end facing surface of the body and adapted to communicate magnetic flux across a gap with the first end facing surface of the body; a second pole residing apart from the body, the second pole adjacent a second end facing surface of the body and adapted to communicate magnetic flux with the second end facing surface of the body, the body, the first pole, and the second pole magnetically coupled and defining an axial magnetic control circuit; a first annular disjointed lamination concentric with the rotational axis of the body and including a first gap disrupting the continuity of the lamination around the rotational axis, a second annular disjointed lamination concentric with the rotational axis of the body and including a second gap disrupting the continuity of the lamination around the rotational axis, wherein the first annular disjointed lamination and the second annular jointed lamination are stacked along the rotational axis of the body and define a plurality of radial poles residing apart from the body, the plurality of radial poles adjacent a lateral facing surface of the body and adapted to communicate magnetic fluxes with the lateral facing surface of the body, the body and the plurality of radial poles defining a plurality of radial magnetic control circuits, the plurality of radial poles adapted to communicate magnetic fluxes with the lateral facing surface of the body and at least one of the first pole or the second pole, and the body, the plurality of radial poles, and at least one of the first pole or the second pole defining a magnetic bias circuit.