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Coreless permanent magnet motor rotor

A permanent magnet motor, ironless technology, applied in the direction of magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc., can solve the problems of increasing rotor moment of inertia, complex structure, complicated process, etc. Small, simple and compact structure, the effect of avoiding core loss

Inactive Publication Date: 2017-05-10
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the rotor of this permanent magnet motor not only has complex structure, large volume, complicated process, and high manufacturing cost, but also the existence of the iron core increases the moment of inertia of the rotor and affects the dynamic performance of the motor. There are also defects such as eddy current loss inside the iron core, which reduces the The overall operating efficiency of the motor

Method used

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  • Coreless permanent magnet motor rotor
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  • Coreless permanent magnet motor rotor

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Embodiment Construction

[0028] In the following, the present invention will be further described by taking the rotor of an "8-pole" ironless permanent magnet motor as an example in conjunction with the accompanying drawings.

[0029] Such as figure 2 As shown, an iron-core permanent magnet motor rotor provided by the present invention includes 8 main magnets 1, 8 auxiliary magnets 1, 8 auxiliary magnets 2, and hollow rotor shaft 4: auxiliary magnets 2 The first and auxiliary magnet two 3 are symmetrically installed on both sides of the main magnet 1. The main magnet 1, the auxiliary magnet one 2 and the auxiliary magnet two 3 form a magnetic pole, and the eight magnetic poles are arranged according to the N pole, S The poles are arranged in alternating order on the outer surface of the 16-sided hollow rotor shaft 4 .

[0030] Such as image 3 As shown, taking the "8-pole" coreless permanent magnet motor rotor as an example, the main magnet 1 is defined as 0-angle magnetization, that is, it is perp...

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Abstract

The invention belongs to the technical field of permanent magnet motor rotors, and more particularly to a coreless permanent magnet motor rotor. The coreless permanent magnet motor rotor comprises a plurality of main magnetic steel, secondary magnetic steel 1 and secondary magnetic steel 2, and a hollow rotor shaft, wherein the amount of the secondary magnetic steel 1 and the amount of the secondary magnetic steel 2 are the same. The secondary magnetic steel 1 and the secondary magnetic steel 2 are symmetrically mounted on both sides of the main magnetic steel respectively. Each piece of main magnetic steel, each piece of the secondary magnetic steel 1 and each piece of the secondary magnetic steel 2 form a magnetic pole. The magnetic poles are arranged on the outer surface of the hollow rotor shaft in an order with alternate N poles and S poles. The coreless permanent magnet motor rotor is simple in structure, can significantly reduce rotor mass and rotational inertia, reduce the rotor core loss and improves motor efficiency.

Description

technical field [0001] The invention belongs to the technical field of permanent magnet motor rotors, and in particular relates to an ironless permanent magnet motor rotor. Background technique [0002] With the rapid development of permanent magnet materials, insulating materials, power electronics and motor control technology and other related majors, permanent magnet motor technology has made great progress and development. In my country, permanent magnet motors such as permanent magnet synchronous motors and permanent magnet brushless DC motors are widely used in defense fields such as aerospace and industrial applications such as power systems and CNC machine tools. [0003] The purpose of optimizing the design of permanent magnet motors is to increase the power-to-weight ratio density of the motor and improve the dynamic and static performance of the motor. The basic structure of a traditional permanent magnet motor includes a stator and a rotor. In terms of structur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/22
CPCH02K1/22
Inventor 王毅安翼董菲
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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