| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotating electrical machine for achieving an improved temperature distribution in the vicinity of a stator winding to accomplish improved reliability. SOLUTION: The rotating electrical machine includes: a rotor formed of a magnetic-field winding wound round a rotor core; and a stator formed of a stator winding wound round a stator core. The stator is arranged in opposition to the rotor with a predetermined spacing therebetween. Furthermore, the rotating electrical machine has the following features. It is structured by punching a split piece, which comprises teeth for insertion of the stator winding and the core back on the outer periphery, from a magnetic steel sheet, by arranging a plurality of split pieces in a circle in a circumferential direction, and by laminating a plurality of those circular configurations in an axial direction. The stator core is formed of a plurality of oriented magnetic steel sheets laminated in an axial end region and a plurality of non-oriented magnetic steel sheets laminated in an axial central region, wherein the non-oriented magnetic steel sheets are higher than the oriented magnetic steel sheets in magnetic permeability in the diametrical direction. COPYRIGHT: (C)2010,JPO&INPIT
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