Permanent magnet embedment rotating electric machine, motor for car air conditioner, and enclosed electric compressor

摘要

Outer circumference of a rotor (15) is alternately provided with a plurality of circumferential portions (19A, 19B) and a plurality of convex portions (20). Straight lines each connecting a rotational axis (C) to one of circumferential centers (191) of circumferential portions (19A, 19B) are referred to as radial lines (151). Straight lines each bisecting one of convex portions (20) are referred to as bisectors (154). A plurality of magnetic flux blocking regions (40) are located on a rotor (15). One of the magnetic flux blocking region (40) is located in a range between the radial line (151) and the bisector (154) adjacent to and preceding the radial line (151) in the rotation direction (Y). Therefore, a permanent magnet embedment rotating electric machine is capable of preventing decreases in torque and suppressing torque ripple (Fig. 1B).