2D Eddy current analysis in plane of laminated ferromagnetic media
Bart Scheerlinck, Peter Sergeant · Ghent University Academic Bibliography (Ghent University) · 2013
Laminated media are intended to conduct the magnetic flux in the plane (high permeability and high electrical resistance to limit the eddy currents). When fringing flux falls in perpendicular to the plane, the surface for the eddy currents is no longer small. This will cause eddy current losses, which will reduce the efficiency of the application. This fringing flux can be produced by the winding around the stack or in case of permanent magnet synchronous machines by flux from the permanent magnets on the rotor . Also magnetic saturation of a sheet will result in flux travelling from one sheet to another, causing flux perpendicular to the plane of the sheet