To provide a permanent magnet type rotary electric machine for restraining excessive induced voltage during the time of high rotational speed, and gaining large reluctance torque.
This rotary electric machine comprises a stator 11 which is disposed with a stator winding 13 on an inner periphery surface of a roughly cylindrical stator core 12, and a rotor 14 supported rotatably on an inner periphery side of the stator 11 through a prescribed gap G. This rotor 14 has a columnar rotor core 15, a rotating shaft 19 which is pierced at a position connecting centers of a circular plate of both end surfaces in an axial direction of the rotor core 15, at least two pairs of rotor poles consisting of plate type permanent magnets 16 buried in a part, which is the rotor core 15, facing an outer periphery surface of the rotating shaft 19 and the inner periphery surface of the stator core 12, and disposed so that the respective pairs may become a roughly V shape when viewed from a cross section orthogonal to the axial direction respectively and the corner part of the V shape may face the rotating shaft 19 side, and a plurality of roughly V-shaped slits 17 or a plurality of holes 18 formed at a position, which is the rotor core 15, facing the permanent magnet 16 and the stator core 12 so as to be in parallel to the rotor poles respectively.
Sadao Muramatsu
Atsushi Tsuboi
Ryo Hashimoto
Satoshi Kono
Makoto Nakamura
Shoji Kawai