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Permanent magnet synchronous motor with non-uniform segmented rotor poles and its optimal setting method

A technology for permanent magnet synchronous motors and rotor poles, applied in electromechanical devices, design optimization/simulation, magnetic circuits, etc., can solve problems such as weakening motor cogging torque, reduce eddy current loss, and eliminate axial unbalanced magnetic pull , the effect of reducing vibration

Active Publication Date: 2022-04-01
ZHEJIANG UNIV ADVANCED ELECTRICAL EQUIP INNOVATION CENT +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can weaken the cogging torque of the motor to a certain extent, but the weakening effect of the V-shaped oblique pole on the cogging torque is weaker than that of the traditional segmented oblique pole under the same number of segments

Method used

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  • Permanent magnet synchronous motor with non-uniform segmented rotor poles and its optimal setting method
  • Permanent magnet synchronous motor with non-uniform segmented rotor poles and its optimal setting method
  • Permanent magnet synchronous motor with non-uniform segmented rotor poles and its optimal setting method

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Embodiment Construction

[0046] In order to describe the present invention in more detail, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0047] The permanent magnet synchronous motor includes a rotor, a stator and an armature winding. The rotor is set inside the stator, the rotor and the stator are arranged coaxially, and the armature winding is wound on the stator.

[0048] Such as figure 1 As shown, the rotor includes a rotor core 1 and permanent magnets 21-25, the rotor core 1 is cylindrical, and the permanent magnets are arranged outside the rotor core 1, and the permanent magnets are divided into N sections along the axial direction of the rotor core 1, and each section is permanently The magnet ring is mainly composed of a plurality of permanent magnets uniformly spaced along the same circumference of the rotor core 1; the pole arc lengths and adjacent intervals (adjacent intervals and ...

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Abstract

The invention discloses a permanent magnet synchronous motor with unevenly segmented rotor magnetic poles and an optimal setting method thereof. Including the rotor, stator and armature windings, the permanent magnets of the rotor are distributed axially symmetrically and divided into N sections, and the offset angles and stacking thicknesses of the permanent magnet rings in the axially asymmetric positions are different. The torque function sets the offset angle and stack thickness of each segment of the permanent magnet ring; the stator is provided with a plurality of stator slots, and is an iron core structure in which semi-closed slots and closed slots are mixed and stacked in proportion. The invention can not only obtain smaller cogging torque than the traditional segmented inclined pole, but also offset the axial unbalanced magnetic pull force by adopting the axially symmetrical structure, and reduce the noise and vibration of the motor. In this case, the overall performance of the motor is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of permanent magnet synchronous motors and relates to a permanent magnet synchronous motor and an optimal setting method, in particular to a permanent magnet synchronous motor with non-uniform segmented rotor magnetic poles and an optimal setting method thereof. Background technique [0002] The permanent magnet synchronous motor has the advantages of high torque density, high control precision, high efficiency and low noise. With the continuous improvement of the performance of permanent magnet materials, the AC permanent magnet servo system as an executive motor has been developed rapidly and widely used Used in industrial fields. [0003] Cogging torque is one of the inherent problems of permanent magnet synchronous motors, which can be regarded as no-load reluctance torque, which is caused by the tangential component of the interaction force between the rotor permanent magnet and the stator core. For hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/2706H02K1/274H02K1/12H02K1/16G06F30/23G06F119/14
CPCH02K1/2706H02K1/12H02K1/165H02K1/274G06F30/23G06F2119/14H02K2213/03
Inventor 阎彦程译萩沈燚明张振史婷娜夏长亮
Owner ZHEJIANG UNIV ADVANCED ELECTRICAL EQUIP INNOVATION CENT
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