Combined structure of stator and rotor

Abstract

The invention discloses a combined structure of a stator and a rotor, which belongs to the field of electric motors. The combined structure of the stator and the rotor includes a stator and a rotor, the stator includes a stator core, the stator core is provided with winding teeth opposite to the rotor, and the winding teeth are evenly distributed on the stator core, and the winding teeth are arranged on the stator core. The armature winding is wound; the rotor includes a rotor core and a plurality of magnetic steels, and a plurality of installation slots are evenly spaced in the circumferential direction of the rotor iron core, and a magnetic steel is embedded in each installation slot, and a plurality of magnets The steel includes a first magnetic steel and a second magnetic steel adjacently arranged, the symmetry axis of the first magnetic steel passing through the center of the rotor is the D axis, and the axis between the first magnetic steel and the second magnetic steel passing through the center of the rotor The axis of symmetry is the Q axis, the distance between the point on the outer contour line of the rotor end surface and the side wall of the adjacent winding tooth is g, and within the fan-shaped range from the Q axis to the D axis, g is along the direction from the Q axis to the D axis get smaller.

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...

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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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