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Hybrid Three-Phase Magnetic Bearings

A magnetic bearing and three-phase technology, applied in the field of magnetic bearings, can solve problems such as large volume, complex processing, and large eddy current, and achieve the effects of reducing volume, simplifying processing, and reducing eddy current

Active Publication Date: 2018-01-09
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of existing magnetic bearings such as large volume, large eddy current, and complex processing, the present invention provides a hybrid three-phase magnetic bearing with reduced volume, reduced eddy current, and simplified processing

Method used

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] refer to Figure 1 ~ Figure 4 , a hybrid three-phase magnetic bearing, including a stator core 3 and a rotor 2, the rotor 2 is located in the inner hole of the stator core 3, the hybrid three-phase magnetic bearing also includes a magnetic isolation aluminum ring 1, the magnetic isolation Three permanent magnets 5 are arranged at equal arc intervals on the aluminum ring 1, stator cores 3 are respectively arranged on both sides of the magnetic isolation aluminum ring 1, and three winding coils are arranged at equal arc intervals on the stator iron core 3. The electromagnet 4, the electromagnet 4 and the permanent magnet 5 are dislocated, and the outer sides of the two stator cores 3 are fixedly installed with a magnetic bearing end cover 6 .

[0022] Further, a washer aluminum ring 7 is provided between the stator core 3 and the magnetic bearing end cover 6 .

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Abstract

A hybrid three-phase magnetic bearing, including a stator core and a rotor, the rotor is located in the inner hole of the stator core, the hybrid three-phase magnetic bearing also includes a magnetic isolation aluminum ring, and the upper circular arc of the magnetic isolation aluminum ring Three permanent magnets are arranged at intervals, stator iron cores are respectively arranged on both sides of the magnetic isolation aluminum ring, and three electromagnets composed of winding coils are arranged at equal circular arc intervals on the stator iron core. The magnets are misplaced, and the outer sides of the two stator cores are fixedly equipped with magnetic bearing end covers. The invention provides a hybrid three-phase magnetic bearing with reduced volume, reduced eddy current and simplified processing.

Description

technical field [0001] The invention relates to the field of magnetic bearings, in particular to a hybrid three-phase magnetic bearing. Background technique [0002] Due to the advantages of small mechanical wear, easy mechanical and electrical protection, convenient maintenance, overhaul and replacement, magnetic suspension bearings are suitable for harsh environments, clean and non-polluting environments, and fields with special needs. More and more attention has been paid by scientific and technological workers; There are high-precision machine tool spindles, CNC machine tool spindles, high-pressure vacuum pumps, turbines, compressors, hydroelectric generators, satellite navigation and other equipment applications. Magnetic bearings can be divided into DC magnetic bearings and AC magnetic bearings in terms of system structure and control methods. At present, the cost of the DC type magnetic bearing power amplifier is high, and a radial magnetic bearing requires two bipol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C32/04
Inventor 胡雄心郎成业王鹏飞
Owner ZHEJIANG UNIV OF TECH