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Magnetic field modulation type coaxial magnetic gear

A magnetic field modulation and magnetic gear technology, applied in electrical components, electromechanical devices, electromechanical transmission devices, etc., can solve the problems of inability to improve the mechanical strength of the high-speed inner rotor, increase the difficulty of processing and manufacturing the stator, etc., to save consumption, not easily fall off, reduce The effect of manufacturing cost

Inactive Publication Date: 2015-12-09
HANGZHOU SANXIANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the above technology can improve the mechanical strength of the outer rotor, it increases the difficulty of manufacturing the stator and cannot improve the mechanical strength of the high-speed inner rotor.

Method used

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  • Magnetic field modulation type coaxial magnetic gear
  • Magnetic field modulation type coaxial magnetic gear
  • Magnetic field modulation type coaxial magnetic gear

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 As shown, the magnetic field modulation type coaxial magnetic gear of this embodiment includes: an inner rotor 1, a stator magnetic modulation ring 2 and an outer rotor 3, which are arranged from the inside to the outside and are concentric, this embodiment and the following three embodiments All adopt radial magnetic field type magnetic gears, the stator magnetic modulation ring 2 is located in the air gap between the inner rotor 1 and the outer rotor 3, and there are air gaps between the inner and outer rotors and the stator magnetic modulation ring 2 respectively.

[0033] In this embodiment, the inner rotor 1 is a permanent magnet rotor, and the inner rotor 1 is composed of an inner rotor iron core 11 and an inner rotor permanent magnet 12. The inner rotor permanent magnet 12 is embedded in the permanent magnet installed on the outer surface of the inner rotor iron core 11. In the slot; the outer rotor 3 is a salient pole rotor with uniformly distribute...

Embodiment 2

[0041] Such as figure 2 As shown, in this embodiment, except that the structure of the inner rotor 1 is different from that of the embodiment 1, the rest of the structure is the same.

[0042] The permanent magnet installation slot of the inner rotor 1 of this embodiment adopts a built-in type, and the permanent magnets 12 are embedded in the evenly distributed built-in slots of the inner rotor core. The built-in slots are U-shaped slots, and the magnetic direction of each permanent magnet is shown by the arrow , In the U-shaped groove with the same relative position, the relative magnetization direction of each permanent magnet is toward the center of the U-shaped groove, and forms a pair of NS magnetic field loops with the adjacent inner rotor core, and the permanent magnets under a pair of poles provide The magnetic flux is added in parallel, and the built-in slot structure can also adopt other magnetic circuit structures such as radial, tangential, and hybrid. It only needs t...

Embodiment 3

[0044] Such as image 3 As shown, in the magnetic field modulation type coaxial magnetic gear of this embodiment, the inner rotor 1 is a salient pole rotor, with uniformly distributed ferromagnetic salient poles 11 arranged on its outer surface, and the outer rotor 3 is a permanent magnet rotor. The core 31 and the outer rotor permanent magnet 32 ​​are composed. The outer rotor permanent magnet 32 ​​is embedded in the permanent magnet installation slot on the inner surface of the outer rotor core. The permanent magnet installation slot adopts an external slot; the stator magnetic modulation ring 2 is fixedly installed inside and outside Between the rotors, a number of magnetic conductive blocks 21 are evenly distributed along the circumferential direction, and there are air gaps or other non-magnetic materials 22 between adjacent magnetic conductive blocks.

[0045] The magnetic gear outer rotor permanent magnets 32 of this embodiment are embedded in the permanent magnet installat...

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Abstract

The invention discloses a magnetic field modulation type coaxial magnetic gear. The magnetic field modulation type coaxial magnetic gear comprises a first rotor, a stator magnetic modulation ring and a second rotor which are sequentially distributed and coaxially arranged, wherein any one of the first rotor and the second rotor is a salient-pole rotor, and the other one is a permanent-magnet rotor; the salient-pole rotor comprises a magnetic conduction body and ferromagnetic salient poles, the ferromagnetic salient poles are arranged at the magnetic conduction body at intervals along a circumferential direction and face the surface of the stator magnetic modulation ring, and the permanent-magnet rotor faces the surface of the stator magnetic modulation ring and is provided with (N-S) magnetic field loops which are continuously distributed; and the stator magnetic modulation ring comprises magnetic conduction elements which are arranged at intervals, and a non-magnetic conduction element region is arranged between adjacent magnetic conduction elements. In the magnetic field modulation type coaxial magnetic gear, only the permanent-magnet is made of a permanent-magnet material, the dosage of the permanent-magnet material is saved and the manufacturing cost is reduced on the conditions of ensuring torque transfer ability; and the salient-pole rotor is of a simple salient pole structure, the mechanical strength of the rotor can be improved, and the magnetic field modulation type coaxial magnetic gear is convenient to process and manufacture.

Description

Technical field [0001] The invention relates to the technical field of magnetic transmission, in particular to a magnetic field modulation type coaxial magnetic gear. Background technique [0002] With the development of high-performance permanent magnet materials, it is possible to use magnetic transmission instead of traditional mechanical transmission in many industrial applications. Compared with the latter, magnetic transmission has non-contact transmission, no friction, low vibration and noise, overload protection, and reliability. The advantages of high sex. Among the many magnetic transmission components, the University of Sheffield in the United Kingdom published a paper entitled "ANovelHigh-PerformanceMagneticGear" in 2001, which proposed a magnetic gear topology based on the principle of magnetic field modulation, which greatly increased the torque density of magnetic gears and replaced the volume. Huge mechanical gearboxes are used in many occasions that require vari...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K51/00
Inventor 沈建新李华阳郝鹤金孟加
Owner HANGZHOU SANXIANG TECH
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