a rotor comprising a plurality of permanent magnet poles evenly spaced along a circumferential direction of the rotor; and

a stator sleeved outside the rotor, a plurality of stator teeth being disposed on an inner periphery of the stator along a circumferential direction of the inner periphery,

wherein a permanent magnet pole of the rotor comprises a first permanent magnet mounting groove and a second permanent magnet mounting groove disposed sequentially from outside to inside along a radial direction of the rotor, a first layer permanent magnet is disposed in the first permanent magnet mounting groove, and a second layer permanent magnet is disposed in the second permanent magnet mounting groove,

wherein a q-axis of the consequent-pole motor passes through the second permanent magnet mounting groove, the q-axis is located between the first permanent magnet mounting groove and a second permanent magnet mounting groove of a target permanent magnet pole in the plurality of permanent magnet poles, and the target permanent magnet pole is adjacent to the permanent magnet pole,

wherein on a section perpendicular to an axis of the rotor, both sections of the first permanent magnet mounting groove of the permanent magnet pole and the second permanent magnet mounting groove of the permanent magnet pole comprise a first segment, a second segment and a third segment connected in sequence, the first segment and the third segment are symmetrical about a midline of the second segment, and the q-axis passes through the second segment of the second permanent magnet mounting groove of the permanent magnet pole,

wherein a consequent-pole is disposed between two adjacent permanent magnet poles.