| 摘要 |
<p>A rotating electric machine includes: a stator that includes a stator core and a stator winding wound at the stator core; and a rotor that is rotatably supported so as to rotate freely relative to the stator and includes a rotor core, with a plurality of magnetic poles formed at the rotor core and auxiliary salient poles formed for reluctance torque generation each between two successive magnetic poles set next to each other, wherein: each of the magnetic poles of the rotor includes a magnet insertion hole formed at the rotor core, a permanent magnet that is inserted in the magnet insertion hole, and a nonmagnetic portion formed between the permanent magnet and an auxiliary salient pole; the permanent magnet is magnetized so as to achieve one polarity of N polarity and S polarity on a stator side thereof and achieve the other polarity on the opposite side wherein a magnetizing direction is reversed at every magnetic pole formed along a circumferential direction of the rotor; at the rotor, a portion of the rotor core present over an area located toward the stator relative to the permanent magnet functions as a magnetic pole peace and a portion of the rotor core present over an area located toward the stator relative to the nonmagnetic portion function as a bridge portion connecting the magnetic pole peace with the auxiliary salient pole; and a side of the nonmagnetic portion located toward the stator includes a first side at the bridge portion, extending from a side where the permanent magnet is present toward an auxiliary salient pole along a virtual circular arc centered on a rotational axis of the rotor and passing through the permanent magnet insertion hole at a position closest to the stator, and a side of the nonmagnetic portion located toward the auxiliary salient pole includes a second side extending further away from the stator, with the first side and the second side connected through a curved line.</p> |
