ROTOR FOR DYNAMO-ELECTRIC MACHINE, AND DYNAMO-ELECTRIC MACHINE

In a rotor, a permanent magnet 300 is an angulated pillar member of which the cross section perpendicular to the rotor shaft center is rectangular, and includes two pairs of facing side surfaces 310 to 340 which extend along the rotor shaft center, and the paired-up side surfaces 310 and 320 are provided such that one side surface is provided on a side near the rotor shaft center and the other one is provided on the outer peripheral side of the rotor. In the magnet storage slot 200A, a protruding portion 210 is provided which protrudes from an inner peripheral surface of the slot and abuts on a side surface 310 on a side near the rotor shaft center of any pair of side surfaces 310 and 320 in the two pairs. The protruding portion 210 applies, to the permanent magnet 300, an urging force F in which a component force F2 in the outer peripheral direction of the rotor along the abutting side surface 310 and a component force F1 in the outer peripheral direction of the rotor along the side surface 340 adjacent to the side surface 310 are not zero.