NOYAU DE STATOR OU NOYAU DE ROTOR POUR UNE MACHINE ÉLECTRIQUE AYANT DES PERTES DE COURANT DE FOUCAULT RÉDUITES ET UNE CONDUCTIVITÉ MAGNÉTIQUE ET UNE RÉSISTANCE MÉCANIQUE ÉLEVÉES

摘要

A stator core (10) or a rotor core (10) for an electrical machine, the core (10) comprising a plurality of teeth (20) separated by slots (30) in a circumferential direction (100) of the core (10), and a plurality of lamination stacks (40) arranged one after another in an axial direction (50) of the core (10), and separated from each other in the axial direction (50) by cooling ducts (60). Each lamination stack (40) comprises at its each end in the axial direction (50) at least one slit tooth section (150) providing a discontinuity in the electrical conductivity of the lamination material and thereby reducing eddy current losses at the respective slit tooth section (150), and between the slit tooth sections (150) at least one regular tooth section (110) .