Stator and rotor combined structure

Abstract

The invention discloses a stator and rotor combined structure and belongs to the motor field. The stator and rotor combined structure includes a stator and a rotor; the stator includes a stator core; the stator core is provided with wire winding teeth opposite to the rotor; the wire winding teeth are uniformly distributed on the stator core; the wire winding teeth are wound with an armature winding; the rotor includes a rotor core and a plurality of magnets; a plurality of mounting grooves are uniformly distributed at intervals along the circumferential direction of the rotor core; one magnet is embedded in a corresponding mounting groove; the plurality of magnets include first magnets and second magnets, wherein the first magnets are adjacent to the second magnets; the axis of symmetry of the first magnet, which passes through the center of the rotor is a D axis; an axis of symmetry between the first magnet and the second magnet, which passes through the center of the rotor is a Q axis; the distance from points on the outer contour line of an end surface of the rotor to the side walls of the wire winding teeth is g; and in a sector scope from the Q axis to the D axis, g is decreased from the Q axis to the D axis.

Description

technical field [0001] The invention relates to the field of motors, in particular to a combined structure of a stator and a rotor. Background technique [0002] A permanent magnet motor mainly includes a rotor having a magnet pole portion made of magnet steel, and a stator including an iron core and an armature winding. [0003] According to the winding method of the armature winding, the permanent magnet motor is divided into two structures: fractional slot winding and integer slot winding. The permanent magnet motor with fractional slot winding greatly reduces the slot area occupied by the insulating support, so that the actual slot fullness of the armature winding can be increased, the resistance of the winding can be reduced, and the efficiency of the motor can be improved. [0004] However, for permanent magnet motors with fractional slot windings, the armature reaction contains a large number of high-order harmonics, which will increase the iron loss of the motor; an...

AI Technical Summary

Problems solved by technology

[0004] However, for permanent magnet motors with fractional slot windings, the armature reaction contains a large number of high-order harmonics, which will increase the iron loss of the motor; and for permanent magnet motors with fractional slot winding structures, due to the asymmetry of the magnetic circuit, it is easy to cause local The magnetic saturation of the motor causes an increase in vibration and noise of the motor

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