Rotary electric machine

A brushless wound field type rotary electric machine, comprising:

• a stator having a stator winding that generates a rotating magnetic field by an alternating current;
• a rotor that is rotatably held about a rotation axis with respect to the stator;
• and
• a field coil that excites the rotor by a direct current, wherein:
• the rotor includes
• a first magnetic pole that has a first annular portion and a plurality of claw portions extending in an axial direction of the rotation axis from the first annular portion, and
• a second magnetic pole that has a second annular portion and a plurality of projection portions radially projecting on an outer circumferential surface of the second annular portion;
• in the rotor,
• the claw portions of the first magnetic pole and the projection portions of the second magnetic pole are circumferentially alternately positioned, and
• the first magnetic pole and the second magnetic pole are maintained in a non-contact state by providing a radial gap, a circumferential gap, and an axial gap between the first magnetic pole and the second magnetic pole;
• the rotor further includes a gap arrangement member of a non-magnetic material arranged in the radial gap or the circumferential gap;
• and
• an axial end of the gap arrangement member serves as an axial positioning portion that is axially locked with respect to at least one of the first magnetic pole and the second magnetic pole, and axially positions the first magnetic pole and the second magnetic pole, the axial end of the gap arrangement member contacting both of the first magnetic pole and the second magnetic pole.