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Method for coating composite soft magnetic material on stator and high-speed permanent magnet motor thereof

A permanent magnet motor and composite soft magnetic technology, which is applied in the direction of magnetic materials, inorganic material magnetism, and manufacturing motor generators, etc., can solve the problems of increasing manufacturing difficulty and manufacturing cost, uneven cogging permeability, etc., and achieve a reduction in magnetic Effects of dense harmonic components, spatial harmonic suppression, and reduced variation of magnetic permeability performance differences

Active Publication Date: 2022-07-26
MIANYANG WESTMAG MAGNETISM & ELECTRICITY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Solve the above-mentioned problem 2) the traditional technical method is: design groove or design oblique groove or design closed groove on motor stator iron core teeth, and improve the precision of tooth groove processing; Symmetry, but these measures increase the manufacturing difficulty and manufacturing cost to a large extent, and cannot ideally overcome the contradiction of uneven cogging permeability

Method used

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  • Method for coating composite soft magnetic material on stator and high-speed permanent magnet motor thereof
  • Method for coating composite soft magnetic material on stator and high-speed permanent magnet motor thereof
  • Method for coating composite soft magnetic material on stator and high-speed permanent magnet motor thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Step 1): the mass percentage of AL5.4%, Si9.5%, and the rest are iron-silicon-aluminum alloys of iron, to prepare a metal soft magnetic powder with a particle number of 60; The manganese-zinc ferrite is prepared into manganese-zinc ferrite powder with a particle size of 800; the nickel-zinc ferrite of the XCR1000 brand of Mianyang Xici Technology Co., Ltd. is prepared into a nickel-zinc ferrite powder with a particle size of 200 Then the three kinds of soft magnetic powders are uniformly mixed by mass percentage 11:5:4 to form mixed soft magnetic material powder; Step 2), mix the mixed soft magnetic material powder and 5011-11 epoxy resin by mass percentage 22:3 Mix and stir to make a coatable composite soft magnetic material coating; Step 3), apply the composite soft magnetic material coating to a thickness of 0.8mm on the surface of the inner cavity of the stator core of the high-speed permanent magnet motor, and the surface of the inner cavity points to the air. The ...

Embodiment 2

[0028] The difference from Example 1 is to prepare iron-silicon-chromium alloy powder with a particle number of 80 (mass percentage Si6.5%, Cr4.5%, and the rest are iron), and iron-silicon-chromium alloy powder with a particle number of 60 (mass percentage). The percentage of AL5.4%, Si9.5%, the rest is iron) and the XCR1000 brand nickel-zinc ferrite powder of Mianyang West Magnetic Technology Co., Ltd. with a particle number of 200, and then the three soft magnetic powders were mixed according to the mass ratio of 4 : 5:1 is uniformly mixed to form a mixed soft magnetic material powder; the composite soft magnetic coating in Example 2 is coated on the surface of the inner cavity of the stator by a uniform advection method, and the coating thickness is 0.1 mm; 24 hours of natural curing under ℃ conditions. In Example 2, the magnetic permeability of the composite soft magnetic material was measured to be 12.5.

Embodiment 3

[0030] The difference from Example 1 is to prepare iron-silicon-chromium alloy powder with a particle number of 80 (mass percentage Si6.5%, Cr4.5%, and the rest are iron), and iron-silicon-chromium alloy powder with a particle number of 60 (mass percentage). The percentage of AL5.4%, Si9.5%, the rest is iron) and the P95 type manganese-zinc ferrite powder of Mianyang West Magnetic Technology Co., Ltd. with a particle number of 800, and then the three soft magnetic powders were mixed in a mass ratio of 5 :4:1 uniformly mixed to form mixed soft magnetic material powder; the coating thickness is 3.0mm; Example 3 is cured at 80°C for 1 hour. In Example 3, the magnetic permeability of the composite soft magnetic material was measured to be 26.9.

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Abstract

The invention provides a method for coating a composite soft magnetic material on the stator and a high-speed permanent magnet motor thereof. The invention can significantly reduce or fundamentally eliminate the eddy current heating of the rotor of the high-speed permanent magnet motor, and effectively reduce the vibration and noise of the high-speed permanent magnet motor. . A method for coating a composite soft magnetic material on a stator of a high-speed permanent magnet motor, comprising the following steps: 1), making the mixed soft magnetic material powder, 2), making the mixed soft magnetic material powder in 1) into a coatable The composite soft magnetic material coating (1); 3), coating the composite soft magnetic material coating (1) in 2) on the surface of the inner cavity of the high-speed permanent magnet motor stator (7), 4), curing. A high-speed permanent magnet motor using the above method, comprising a stator (7) and a rotor (5), characterized in that a composite soft magnetic material coating (1) is solidified on the inner cavity surface of the iron core of the high-speed permanent magnet motor stator (7).

Description

technical field [0001] The present invention relates to a high-speed permanent magnet motor, in particular to a stator of the high-speed permanent magnet motor. Background technique [0002] A large number of applied practice and research show that: [0003] 1) With the operation of the permanent magnet motor, especially the operation of the high-speed permanent magnet motor, the permanent magnet rotor of the motor will heat up. Permanent magnet demagnetization affects the reliability and stability of high-speed permanent magnet motors; permanent magnet rotor heating has become a serious problem affecting the popularization and application of high-speed permanent magnet motors. [0004] A large number of studies have shown that the magnetically induced eddy current in the permanent magnet rotor is the main cause of the rotor heating. According to the working principle of the high-speed permanent magnet motor, the operation of the high-speed permanent magnet motor is that t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K15/02H01F1/33H01F1/34H01F1/36
CPCH02K15/024H01F1/33H01F1/344H01F1/36
Inventor 赵导文周永川杨阳肖镔陈丕吴献军
Owner MIANYANG WESTMAG MAGNETISM & ELECTRICITY CO LTD