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Permanent magnet motor rotor and permanent magnet motor

A technology of permanent magnet motors and rotors, which is applied in the direction of magnetic circuit rotating parts, magnetic circuits, electromechanical devices, etc., can solve the problems of unstable operation, poor reliability, voltage waveform distortion rate and large torque ripple, etc., to achieve reliable Good performance, increased sine degree, and small torque ripple

Active Publication Date: 2019-03-22
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The permanent magnets of the embedded structure are evenly distributed and embedded in the position close to the outer surface of the rotor. Although it can overcome the disadvantages of poor reliability and performance during operation, the voltage waveform distortion rate and torque ripple are large, and the operation is not stable enough.

Method used

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  • Permanent magnet motor rotor and permanent magnet motor
  • Permanent magnet motor rotor and permanent magnet motor
  • Permanent magnet motor rotor and permanent magnet motor

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0025] Embodiment 1 relates to a permanent magnet motor rotor, specifically as Figure 1-5 As shown in , the motor rotor includes a rotor core 1 and permanent magnets, and the permanent magnets are embedded in the rotor core 1 along the circumferential direction of the rotor core. There are two ways of arrangement of the permanent magnets on the rotor core 1 : tangential arrangement and radial arrangement. exist Figure 1-3 Among them, the permanent magnets are arranged in a tangential direction, and a plurality of permanent magnets 21 are evenly arranged on the rotor core 1 along the circumference relative to the center of the rotor core along the tangential direction. There is another way such as Figure 4 , 5 As shown in , a plurality of permanent magnets 22 are evenly arranged on the rotor core 1 in the radial direction relative to the center of the rotor core. Such as Figure 1-3 As shown in , the rotor core 1 includes an outer edge segment on the outer edge opposite...

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Abstract

The invention aims at providing a permanent-magnet motor rotor and a permanent-magnet motor, which are mainly used for improving the motor stability. The permanent-magnet motor rotor comprises a rotor iron core and a plurality of permanent magnets, wherein the plurality of permanent magnets are uniformly arranged along the circumferential direction of the rotor iron core, the rotor iron core comprises an outer edge segment at the outer edge opposite to each permanent magnet, the outer edge segment comprises an intermediate arc segment and side arc segments, the side arc segments are arranged on the two sides of the intermediate arc segment, and the side arc segments extend towards a central direction approach to the rotor iron core on a direction far away from a central line of the outer arc segment. The outer edge segment is arranged to comprise multiple arc segments, thus, the torque ripple can be reduced, and the motor running is more stable.

Description

technical field [0001] The invention relates to the field of motors, in particular to a permanent magnet motor rotor and a permanent magnet motor. Background technique [0002] The outer edge of the rotor of the traditional embedded permanent magnet motor is generally a full circle, and the air gap between the stator and the rotor is equal. The permanent magnets of the embedded structure are evenly distributed and embedded in the position close to the outer surface of the rotor. Although it can overcome the disadvantages of poor reliability and performance during operation, the voltage waveform distortion rate and torque ripple are large, and the operation is not stable enough. Contents of the invention [0003] In view of this, the purpose of the present invention is to provide a permanent magnet motor rotor which improves the running stability of the motor. [0004] For reaching this purpose, the present invention adopts following technical scheme: [0005] A permanent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/27
CPCH02K1/276H02K1/2773
Inventor 王庆凯许金鑫焦雷谢芳钟成堡
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION