ROTOR FOR ROTATING ELECTRIC MACHINE

摘要

A rotor for a rotating electric machine includes a hollow cylindrical rotor core and a plurality of permanent magnets. The rotor core has a plurality of magnet-receiving holes arranged in a circumferential direction thereof. The permanent magnets are received respectively in the magnet-receiving holes of the rotor core to form a plurality of magnetic poles the polarities of which alternate between north and south in the circumferential direction of the rotor core. Moreover, the rotor core further has a plurality of q-axis core portions each of which is located between one circumferentially-adjacent pair of the magnetic poles. For each of the q-axis core portions, a radially outer circumferential width center of the q-axis core portion is offset upstream in a direction of rotation of the rotor from a radially inner circumferential width center of the q-axis core portion.

主权项

1. A rotor for a rotating electric machine, the rotor comprising:
a hollow cylindrical rotor core having a plurality of magnet-receiving holes arranged in a circumferential direction thereof; and a plurality of permanent magnets received respectively in the magnet-receiving holes of the rotor core to form a plurality of magnetic poles the polarities of which alternate between north and south in the circumferential direction of the rotor core, wherein the rotor core further has a plurality of q-axis core portions each of which is located between one circumferentially-adjacent pair of the magnetic poles, and for each of the q-axis core portions, a radially outer circumferential width center of the q-axis core portion is offset upstream in a direction of rotation of the rotor from a radially inner circumferential width center of the q-axis core portion.