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Fabrication Method of Circumferential Vertical Winding of Composite Rotor of High Speed ​​Permanent Magnet Synchronous Motor

A permanent magnet synchronous motor and composite rotor technology, which is applied in the manufacture of motor generators, stator/rotor bodies, electromechanical devices, etc., can solve the problems of eddy current loss, high-speed motor rotor stress concentration, etc., to offset centrifugal force and reduce eddy current loss and stress concentration, the effect of improving magnetic properties

Active Publication Date: 2021-01-05
BEIHANG UNIV +1
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  • Application Information

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Problems solved by technology

[0004] In order to solve the problems of eddy current loss and high-speed motor rotor stress concentration caused by harmonics in the rotor of high-speed permanent magnet synchronous motors, the present invention uses magnetic powder film and carbon fiber prepreg to form a composite magnetic material. Considering the special multi-layer structure of the high-speed permanent magnet synchronous motor, the present invention proposes a preparation method for the composite rotor of the high-speed permanent magnet synchronous motor to be wound vertically in the circumferential direction, so that the magnetic distribution of the composite rotor in the circumferential direction is uniform, and at the same time, the stress of the maximum speed of the high-speed motor is satisfied. need

Method used

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  • Fabrication Method of Circumferential Vertical Winding of Composite Rotor of High Speed ​​Permanent Magnet Synchronous Motor
  • Fabrication Method of Circumferential Vertical Winding of Composite Rotor of High Speed ​​Permanent Magnet Synchronous Motor
  • Fabrication Method of Circumferential Vertical Winding of Composite Rotor of High Speed ​​Permanent Magnet Synchronous Motor

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[0028] The present invention will be further described below in conjunction with the accompanying drawings and examples. It should be understood that the following examples are intended to facilitate the understanding of the present invention, and have no limiting effect on it.

[0029] Such as figure 1 As shown, the preparation method of the high-speed permanent magnet synchronous motor compound rotor circumferential vertical winding preparation method includes the following steps:

[0030] Step 1: preparing a composite magnetic material;

[0031] 1) Mix carbon fiber with epoxy resin to prepare carbon fiber prepreg;

[0032] 2) Mix the magnetic powder with a series of additives such as epoxy resin binder, coupling agent, curing agent, plasticizer, etc. to prepare a magnetic powder film, and then heat the magnetic powder film at 80°C to make it in a molten state;

[0033] 3) In composite material preparation equipment 1, such as figure 2 As shown, the prepared carbon fiber...

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Abstract

The invention belongs to the field of motor rotor preparation, and particularly relates to a circumferential and vertical winding preparation method of a high-speed permanent-magnet synchronous motorcomposite rotor. The circumferential and vertical winding preparation method comprises the following steps that a composite magnetic material is prepared; the inner surface of a permanent magnet is adhered to the surface of a rotating shaft of a motor; the two ends of the permanent magnet are connected with annular supports; a multi-layer prepared composite magnetic material is continuously woundon the outer surface of a carbon fiber of the permanent magnet in the circumferential direction, and a pre-tightening force is applied in the winding process; after the composite magnetic material iswound, winding continues to be performed on the surface of the composite magnetic material to form a carbon fiber protective sleeve; and then curing, cleaning, annular support dismantling and turningprocessing are sequentially performed to prepare the composite rotor. The circumferential and vertical winding preparation method can solve the problem of eddy current loss and high-speed motor rotorstress concentration, which are caused by harmonic waves, of the high-speed permanent-magnet synchronous motor rotor, the circumferential magnetic distribution of the composite rotor can be uniform, and the stress requirement of the highest speed of the high-speed motor can be met.

Description

technical field [0001] The invention belongs to the field of motor rotor preparation, in particular to a preparation method for circumferential vertical winding of a composite rotor of a high-speed permanent magnet synchronous motor. Background technique [0002] The compound rotor winding technology of high-speed permanent magnet synchronous motor is an important technology in the manufacturing process of high-speed permanent magnet synchronous motor rotor. Conventional high-speed permanent magnet synchronous motors mostly use sintered permanent magnets as the main body of magnetic energy supply, and provide interference through carbon fiber protective sleeves to ensure that when the motor rotor is in a state of high speed, the sintered permanent magnets are always in a state of compressive stress. [0003] Chinese application 201910974664.0 proposes a winding device, especially filament winding. This kind of winding device can accurately control the winding process, but i...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C63/12B29C70/68H02K15/03
CPCB29C63/12B29C70/681H02K15/03
Inventor 王惠军张凤阁姚金宇
Owner BEIHANG UNIV
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