Permanent magnet synchronous motor subsection skewed pole positioning rotor

Abstract

The invention relates to a permanent magnet synchronous motor subsection skewed pole positioning rotor, which comprises a rotor shaft and a rotor iron core installed on the rotor shaft, wherein the rotor iron core is composed of at least n iron core sections which are connected in series, each iron core section comprises hollow rotor sections and permanent magnets with at least P pole pairs arranged on the hollow rotor sections, the same magnetic poles of the permanent magnets of two adjacent iron core sections are equidirectionally staggered, and an axially formed skewed pole spiral angle is alpha; the hollow rotor sections are provided with more than one positioning base point located at the same circumference and a plurality of matching points matched with the positioning points, an angle between the positioning base point and the adjacent matching point is beta, and beta=360 degrees/P-alpha/(n-1) or beta=360 degrees/P+alpha/(n-1), wherein the n is greater than or equal to 2, and the P is greater than or equal to 2. The permanent magnet synchronous motor subsection skewed pole positioning rotor can realize rotor iron core section positioning for a rotor subsection skewed pole motor accurately, reliably, simply and conveniently in a mode of the positioning base points and the matching points.

Description

technical field [0001] The invention relates to a segmented inclined pole positioning rotor of a permanent magnet synchronous motor. Background technique [0002] At present, in order to improve the performance of the motor (improve the motor back EMF waveform, reduce the motor cogging torque, reduce the motor noise, improve the motor efficiency, improve the motor control accuracy, etc.), the permanent magnet drive motor mostly adopts two kinds of stator chute or rotor oblique pole. Way. Among them, it is difficult to insert wires in the stator inclined motor, which is not conducive to mass production; if the rotor inclined pole motor adopts an integrated magnetic steel structure, the magnetic steel needs to realize circumferential rotation and axial tilt at the same time, which is not conducive to manufacturing, transportation and assembly; Segmented oblique poles, and the use of the same mold rotor for punching, requires an accurate, reliable, and simple rotational positi...

AI Technical Summary

Problems solved by technology

Among them, it is difficult to insert wires in the stator inclined motor, which is not conducive to mass production; if the rotor inclined pole motor adopts an integrated magnetic steel structure, the magnetic steel needs to realize circumferential rotation and axial tilt at the same time, which is not conducive to manufacturing, transportation and assembly; Segmented inclined poles, and use the same mold rotor punching, each segment needs an accurate, reliable and simple rotation positioning method to meet the assembly requirements of the motor rotor

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