Surface-mounted motor, surface-mounted motor rotor and stator

Abstract

The invention discloses a surface-mounted motor, a surface-mounted motor rotor and a stator. The magnetic steel (2) of the surface-mounted motor rotor is provided with an external side surface facing the stator (1). The two sides of the external side surface are provided with trimming structures which are symmetrically arranged along the center line. According to the surface-mounted motor rotor, the two sides of the external side surface are provided with the trimming structures which are symmetrically arranged along the center line so that the air gap length of all the positions along the internal circumferential surface of the stator of the motor can be changed, then the air gap magnetic field can be improved, the air gap flux density and the counter-electromotive force waveform sine degree can be enhanced, the harmonic proportion can be reduced and thus the torque ripple can be reduced and the motor vibration noise can be effectively reduced. The stator and the surface-mounted motor have the same technical effects with those of the surface-mounted motor rotor.

Description

technical field [0001] The invention relates to the technical field of motor equipment, in particular to a surface-mounted motor, a rotor and a stator of the surface-mounted motor. Background technique [0002] The surface-mounted permanent magnet synchronous motor has the advantages of simple structure and easy vector control, so it has been widely used in high-performance servo systems and low-speed high-torque propulsion systems. [0003] Such as figure 1 As shown, the surface-mounted motor includes a surface-mounted motor rotor and a stator 01 , and the surface-mounted motor rotor includes a rotating shaft 04 , a rotor core 03 and a magnetic steel 02 disposed on the outer surface of the rotor core 03 . [0004] At present, the air-gap flux density and back EMF of the surface-mounted permanent magnet synchronous motor contain various space harmonics. Due to the slots on the stator 01 of the surface-mounted permanent magnet synchronous motor, the magnetic circuit permeabi...

AI Technical Summary

Problems solved by technology

[0004] At present, the air-gap flux density and back EMF of the surface-mounted permanent magnet synchronous motor contain various space harmonics. Due to the slots on the stator 01 of the surface-mounted permanent magnet synchronous motor, the magnetic circuit permeability is uneven, and the air-gap magnetic Dense, back EMF contains various space harmonics, and the proportion of harmonics is large, and the interaction of various harmonics produces low-order force waves, which increases the vibration noise of the motor

The sine degree of the waveform is poor, and the waveform distortion rate is high, which makes the vibration and noise of the motor larger, which affects the user's health and limits the application and promotion of the motor

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