Permanent magnet electrical machine and its manufacturing method

摘要

A rotating electrical machine of the flux concentrating permanent magnet type including a rotor (2) that has an even number of first permanent magnets (22) aligned in circumferential direction of the rotor, second permanent magnets (23) of a number equal to that of the first permanent magnets (22) provided respectively between the stator (1) and circumferential ends of the first permanent magnets (22) adjacent to each other in circumferential direction, and core pieces (24) of a number equal to that of the first permanent magnets (22), provided respectively between two second permanent magnets (23) adjacent to each other in the circumferential direction.