Abstract: A motor includes a stator. The stator includes a stator core and an end winding. The stator core has a central hole configured for assembly of a rotor. The end winding is arranged at an end of the stator core, and includes an inner flat wire conductor adjacent to the central hole. The inner flat wire conductor includes first and second coupling segments embedded in the stator core, and a bridging segment coupled between the first and second coupling segments. An extension dimension of the first coupling segment of the inner flat wire conductor and an extension dimension of the second coupling segment of an adjacent inner flat wire conductor have an axial length difference in the axial direction, so that an overlapped part of two adjacent inner flat wire conductors form staggered approach avoidance in the axial direction and reduce radial intrusion into the central hole.

Abstract: A permanent magnet synchronous motor, a rotor thereof comprising an iron core in cylindrical form, with p S pole magnet plates and p N pole magnet plates arranged inside of the iron core around an axis thereof, wherein p is a positive integer, and the p S pole magnet plates and the p N pole magnet plates are alternatively aligned; on a surface of a rotor iron core of each magnet steel plate are arranged two d axial surface grooves; the two d axial surface grooves corresponding to each magnet steel plate are situated on two sides of a center line of the magnet steel plate; an inter-axial distance of the two d axial surface grooves of each magnet steel plates is approximately equal to a tooth tip span of a rotor tooth of the permanent magnet synchronous motor. Also disclosed is a rotor of a permanent magnet synchronous motor.