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Non-salient pole type internal rotor reluctance type magnetic coupler

A magnetic coupling and inner rotor technology, applied in the direction of permanent magnet clutches/brakes, etc., can solve the problems of reduced transmission efficiency, contamination of fluid medium, low transmission efficiency, etc., and achieve reduced fluid resistance torque and high mechanical strength , The effect of high transmission efficiency

Inactive Publication Date: 2016-01-06
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The characteristics of the permanent magnet magnetic coupling are: both the inner and outer rotors contain permanent magnets, the force density is high, and the transmission efficiency is high. The organic adhesive used in the magnet bonding process pollutes the fluid medium in which it works; one rotor in the squirrel-cage magnetic coupler is a squirrel cage made of conductors, which does not contain permanent magnets and can be used in high-temperature applications, but its work The principle is similar to that of an induction motor. During transmission, a current will be induced in the squirrel cage, resulting in additional loss, which will reduce the transmission efficiency, and the induced current will cause electrochemical reactions in the working medium; one rotor in the reluctance magnetic coupling is only Composed of magnetically permeable materials without permanent magnets, it can be used in high-temperature applications and achieve higher efficiency than squirrel-cage magnetic couplers. The existing reluctance-type magnetic couplers have a salient pole structure. High resistance when rotating, which will lead to low overall transmission efficiency

Method used

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  • Non-salient pole type internal rotor reluctance type magnetic coupler
  • Non-salient pole type internal rotor reluctance type magnetic coupler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A hidden pole type inner rotor reluctance type magnetic coupler, its composition includes: an outer rotor 5, a shielding sleeve 1, an inner rotor 2, the inner rotor 2 is cylindrical, and the inner rotor 2 is cylindrical. The circumferential surface is fixedly arranged on the transmission shaft 3, an inner layer gap 7 is provided between the outer circumferential surface of the cylindrical inner rotor 2 and the inner circumferential surface of the shielding sleeve 1, and the outer circumferential surface of the shielding sleeve 1 is connected to the outer circumferential surface of the shielding sleeve 1. An outer layer gap 8 is provided between the inner circumferential surfaces of the outer rotor magnetic steel 4, the outer rotor magnetic steel 4 is tile-shaped, and the outer circumferential surface of the tile-shaped outer rotor magnetic steel 4 is fixedly connected to the outer rotor 5, and arranged for a week along the outer rotor 5, the outer rotor 5 is cylindrical;...

Embodiment 2

[0021] In the hidden pole type inner rotor reluctance type magnetic coupler described in Embodiment 1, the multiple groups of slots 6 are symmetrically arranged with respect to the center of the transmission shaft 3, and each group of slots 6 includes multiple pairs of arcs. The plurality of pairs of arc-shaped grooves are arranged symmetrically with respect to the center of the transmission shaft 3, and the convex arc surfaces of each adjacent two groups of arc-shaped grooves are arranged adjacent to each other. Slotting makes the hidden pole inner rotor have asymmetry on the magnetic circuit, which can produce a salient pole effect similar to the salient pole structure rotor in the hidden pole structure, thereby generating reluctance torque and realizing magnetic coupling.

Embodiment 3

[0023] In the hidden pole type inner rotor reluctance type magnetic coupler described in Embodiment 2, each group of arc-shaped slots is connected to the adjacent NS poles, and the number of groups of slots is equal to the number of pole pairs of the outer rotor permanent magnets. By setting the arc-shaped slot, when the relative position of the inner and outer rotors changes, the reluctance change of the closed magnetic circuit of the permanent magnet magnetic force line is the largest, thereby generating the largest reluctance torque. .

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PUM

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Abstract

Provided is a non-salient pole type internal rotor reluctance type magnetic coupler. The invention relates to a non-salient pole type internal rotor reluctance type magnetic coupler. An internal gap (7) is arranged between an outer circumferential surface of a cylindrical internal rotor (2) and an inner circumferential surface of a shielding sleeve (1), an external gap (8) is arranged between an outer circumferential surface of the shielding sleeve (1) and an inner circumferential surface of an external rotor magnetic steel (4), the external rotor magnetic steel (4) is in a tile shape, an outer circumferential surface of the tile-shaped external rotor magnetic steel (4) is fixedly connected with an external rotor (5) and arranged around the external rotor (5), the external rotor (5) is cylindrical, the cylindrical internal rotor (2) is provided with a plurality of groups of grooves (6) along the axial direction, the external rotor magnetic steel (4) comprises at least a pair of tile-shaped permanent magnets, all the tile-shaped permanent magnets are tightly attached to each other in sequence, all the tile-shaped permanent magnets are magnetized in a radial or parallel manner, and the magnetizing directions of each two adjacent tile-shaped permanent magnets are opposite. The coupler is used as the non-salient pole type internal rotor reluctance type magnetic coupler.

Description

technical field [0001] The invention relates to a hidden pole type inner rotor reluctance type magnetic coupler. Background technique [0002] The existing magnetic coupler can be divided into permanent magnet type, squirrel cage type and reluctance type according to the working principle. The characteristics of the permanent magnet magnetic coupling are: both the inner and outer rotors contain permanent magnets, the force density is high, and the transmission efficiency is high. The organic adhesive used in the magnet bonding process pollutes the fluid medium in which it works; one rotor in the squirrel-cage magnetic coupler is a squirrel cage made of conductors, which does not contain permanent magnets and can be used in high-temperature applications, but its work The principle is similar to that of an induction motor. During transmission, a current will be induced in the squirrel cage, resulting in additional loss, which will reduce the transmission efficiency, and the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K49/10
Inventor 王宝超徐永向邹继斌赵猛江善林赵博王骞
Owner HARBIN INST OF TECH