Patent ID: 8115362

Claim:
A rotating electrical machine comprising: a rotor having N poles and S poles alternately formed along a circumferential direction thereof; a stator core that is arranged so as to surround said rotor and has a plurality of axially extending slots formed at a predetermined pitch in the circumferential direction thereof; and a stator having a stator winding fitted in said slots; wherein said stator core comprises a plurality of iron core blocks abutting each other at their adjacent end faces, where the end faces are formed by dividing a tooth formed between adjacent slots of the plurality of iron core blocks, and fusion bonded at the abutting end faces to form an element iron core, and said element iron core is formed in such a manner that said element iron core is bent to deform with its opposite end faces, which are formed by dividing a tooth formed between adjacent slots of the plurality of iron core blocks, being fusion bonded to each other while being placed in abutment with each other; and the depth of fusion of a block weld portion thus fusion bonded reaches up to less than an entire portion of a compressed region which is generated upon bending of said stator core, and wherein each of the plurality of iron core blocks is formed from a predetermined number of steel plates of a predetermined thickness laminated one over another.