High-torque output permanent magnet rotor

A permanent magnet rotor and high-torque technology, applied in the field of electric motors, can solve the problems of poor chemical resistance, large motor cogging torque, and limited motor power, and achieve a stable and reliable overall structure, low torque ripple, and low Effect of eddy current loss

Pending Publication Date: 2021-03-26
上海三环磁性材料有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) Epoxy compression series magnetic rings and nylon extrusion series magnetic rings are affected by their own materials, have poor chemical resistance, and cannot work in the medium for a long time, so only permanent magnet materials with PPS substrates can be used
[0004] (2) The magnetic energy product of the material itself is low, and the highest magnetic energy product of the injection molded PPS series bonded permanent magnet material can only reach 7MGOe, so the magnetic flux provided is small, which limits the power of the motor
[0005] (3) The existing large-sized magnetic ring with few poles generally adopts direct magnetization, and the waveform is generally saddle-shaped, resulting in large cogging torque and low efficiency of the motor

Method used

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  • High-torque output permanent magnet rotor
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  • High-torque output permanent magnet rotor

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Embodiment Construction

[0023] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0024] see figure 1 and figure 2 , which shows a structural example scheme of a high-torque output permanent magnet rotor given in this example.

[0025] It can be seen from the figure that the high torque output permanent magnet rotor 100 is mainly composed of a rotating shaft 110 , a supporting part 120 , an iron core 130 , and a permanent magnet ring 140 to realize torque output.

[0026] In this solution, the permanent magnetic ring 140 is wrapped on the outside of the iron core 130 to form a whole, and the rotating shaft 110 is coaxially installed in the iron core 130 . Cooperating with it, the supporting part 120 is arranged between the rotating shaft 110 and the iron core 130, forms a support and fixation to the rotating shaft 110 and ...

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Abstract

The invention discloses a high-torque output permanent magnet rotor, which comprises a rotating shaft, a support part, an iron core and a permanent magnet ring, and is characterized in that the permanent magnet ring wraps the outer side of the iron core, and the rotating shaft is coaxially and fixedly arranged in the iron core through the support part in a penetrating manner. The high-torque output permanent magnet rotor provided by the invention can realize low-torque pulsation while realizing high-power output.

Description

technical field [0001] The invention relates to motor technology, in particular to permanent magnet rotor technology. Background technique [0002] The existing permanent magnet motor rotors generally use isotropic bonded permanent magnet materials. Isotropic bonded permanent magnet materials have the advantages of easy magnetization and low price, but they have the following problems: [0003] (1) Epoxy compression series magnetic rings and nylon extrusion series magnetic rings are affected by their own materials, have poor chemical resistance, and cannot work in the medium for a long time, so only permanent magnet materials with PPS substrates can be used. [0004] (2) The magnetic energy product of the material itself is low, and the highest magnetic energy product of the injection molded PPS series bonded permanent magnet material can only reach 7MGOe, so the magnetic flux provided is small, which limits the power of the motor. [0005] (3) The existing large-sized magn...

Claims

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Application Information

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IPC IPC(8): H02K1/27
CPCH02K1/278
Inventor 陈玮汪云翔李纲闵加豪黄鹏斌
Owner 上海三环磁性材料有限公司
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