Rotating electrical machine

摘要

A rotating electrical machine includes: a rotor (7) comprising a rotor core and a field winding wound round the rotor core; and a stator comprising a stator core (4) and a stator winding (6) wound round the stator core. The stator is arranged in opposition to the rotor with a predetermined spacing there between. The stator core is formed by punching a split piece, which comprises teeth for insertion of the stator winding there into and a core back on an outer periphery thereof, from a magnetic steel sheet, and laminating a plurality of those circular configurations in an axial direction, in which a plurality of the split pieces are arranged in a circle in a circumferential direction. The stator core is configured so that the magnetic steel sheets at the axial central region (11) thereof are higher in magnetic permeability in the diametrical direction than the magnetic steel sheets at the axial end region (10) thereof.