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An Improved Hidden Pole Inner Rotor Reluctance Magnetic Coupler

A technology of magnetic coupling and inner rotor, applied in the direction of electric brake/clutch, electrical components, electromechanical devices, etc., can solve the problems of low transmission efficiency, contamination of fluid medium, reduction of transmission efficiency, etc., and achieve high mechanical strength and peak torque The effect of improving transmission capacity and effective torque

Active Publication Date: 2017-10-31
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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  • An Improved Hidden Pole Inner Rotor Reluctance Magnetic Coupler
  • An Improved Hidden Pole Inner Rotor Reluctance Magnetic Coupler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] An improved hidden pole type inner rotor reluctance magnetic coupler, which consists of: outer rotor 5, shielding sleeve 1, inner rotor 2, the inner rotor 2 is cylindrical, and the cylindrical inner rotor 2 The inner peripheral surface is fixedly arranged on the transmission shaft 3, an inner layer gap 7 is provided between the outer peripheral surface of the cylindrical inner rotor 2 and the inner peripheral surface of the shielding sleeve 1, and the outer peripheral surface of the shielding sleeve 1 There is an outer layer gap 8 between the inner peripheral surface of the outer rotor magnetic steel 4, the outer rotor magnetic steel 4 is tile-shaped, and the outer peripheral surface of the tile-shaped outer rotor magnetic steel 4 is fixedly connected to the outer The rotor 5 is arranged one week along the outer rotor 5, the outer rotor 5 is cylindrical; the cylindrical inner rotor 2 is provided with multiple sets of slots 6 in the axial direction, and the outer rotor ma...

Embodiment 2

[0020] In the improved secluded pole type inner rotor reluctance magnetic coupler described in Embodiment 1, the plurality of sets of slots 6 are arranged symmetrically with respect to the center of the transmission shaft 3, and each set of slots 6 includes multiple pairs of arc-shaped slots, 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 adjacently. Slots make the inner rotor of the hidden pole asymmetrical on the magnetic circuit, which can produce a salient pole effect similar to a rotor with a salient pole structure in the hidden pole structure, thereby generating reluctance torque and realizing magnetic coupling.

Embodiment 3

[0022] In the improved hidden pole inner rotor reluctance magnetic coupler described in Example 2, each set of arc-shaped slots connects adjacent NS poles, and the number of sets of slots is equal to the number of pole pairs of the outer rotor permanent magnet. By setting the arc-shaped groove, 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 has the largest difference, thereby generating the largest reluctance torque; the arc-shaped groove 9 can reduce the magnetic flux leakage between poles, Improve the torque output capability of the reluctance magnetic coupling.

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PUM

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Abstract

The invention relates to an improved nonsalient pole type magnetic force coupler of an internal rotor reluctance type. The invention relates to the improved nonsalient pole type magnetic force coupler of the internal rotor reluctance type. An external rotor magnetic steel (4) is shaped like a tile, and the external periphery of the external rotor magnetic steel (4) is fixedly connected with an external rotor (5) which is cylindrical. A cylindrical internal rotor (2) is axially provided with a plurality of groups of slots (6), and the external rotor magnetic steel (4) comprises at least one pair of tile-shaped permanent magnets which are arranged to be closely attached to each other and are magnetized in a radial or parallel manner. Moreover, the adjacent two permanent magnets are opposite in magnetization direction. A part, corresponding to the joint of each two tile-shaped permanent magnets, of the external periphery surface of the cylindrical internal rotor (2) is provided with an arc-shaped groove (9). The coupler is used for a nonsalient pole type magnetic force coupler of the internal rotor reluctance type.

Description

technical field [0001] The invention relates to an improved hidden pole type inner rotor reluctance 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K49/00
CPCH02K49/00
Inventor 王宝超邹继斌赵猛徐永向王骞江善林赵博
Owner HARBIN INST OF TECH