Permanent magnetism motor V-shaped skewed pole rotor structure

A technology of permanent magnet motor and rotor structure, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit rotating parts, etc., can solve the problem of difficult realization of permanent magnet rotor, eliminate additional pulsating axial force, eliminate cogging Torque, easy operation effect

Active Publication Date: 2016-01-06
愿景动力有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this structure, the permanent magnet rotor will be more difficult to realize

Method used

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  • Permanent magnetism motor V-shaped skewed pole rotor structure
  • Permanent magnetism motor V-shaped skewed pole rotor structure
  • Permanent magnetism motor V-shaped skewed pole rotor structure

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Embodiment Construction

[0023] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0024] Such as figure 1 As shown, the rotor structure of the V-shaped oblique pole of the permanent magnet motor of the present invention mainly includes four parts: the rotating shaft 1, the web plate 2, the cylinder body 3 and the unit magnetic pole 4. Such as figure 2 As shown, the inner layer of the rotor is a cylinder structure, and the cylinder 3 and the shaft 1 are welded through the web 2; the outer surface of the cylinder 3 is circular, and the coaxiality between the cylinder 3 and the shaft 1 must be ensured during processing At the same time, a dovetail groove 3-1 and a threaded hole 3-2 are machined in the axial direction on the surface of the cylinder 3, which are used to fix the unit magnetic pole 4 and the unit magnetic pole bead 12, and a threaded hole 3-2 is also processed on the end surface of the cylinder 3 , used to fi...

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PUM

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Abstract

The invention discloses a permanent magnetism motor V-shaped skewed pole rotor structure, comprising a rotating shaft, a web plate, a cylindrical shell and unit magnetic poles. The external surface of the cylindrical shell is circular, and is provided with dovetail slots and screwed holes in an axial direction; the unit magnetic poles are laminated by rotor punching sheets, and form two symmetrical V-shaped sections on the cylindrical shell in an axial direction; each section is assembled by a plurality of unit magnetic poles, and the unit magnetic poles are discriminated and positioned by utilizing dovetail structures. The unit magnetic poles are fixed by utilizing the dovetail structures, so that the front part of a rotor distorts on an axial side, and the back part distorts for a same angle to an opposite side. Skewed poles of two portions incline in different directions, thereby offsetting axial opposite force generated by the skewed poles, meanwhile eliminating a gullet torque, and reducing motor vibration and noise.

Description

technical field [0001] The invention relates to a structure of oblique poles of a permanent magnet motor rotor, belonging to the technical field of permanent magnet motors. Background technique [0002] Cogging torque is an additional pulsating torque that causes speed fluctuations, motor vibration and noise. Especially in variable speed drive, if the frequency of the cogging torque is close to the natural frequency of the system, it will cause resonance and increase noise. [0003] There are many measures to reduce or eliminate cogging torque, among which the use of oblique poles is one of the most common methods. For permanent magnet motors, since permanent magnets are installed on the rotor, the oblique pole structure of the rotor will increase the difficulty of installing the permanent magnets and the fixing and sealing of the permanent magnets. [0004] For the inclined pole structure, while eliminating the cogging torque, an additional axial force will be generated. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27
Inventor 王小东黄森林王雪张娜娜刘晓辉陈恒峰郭强
Owner 愿景动力有限公司
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