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Magnetic Powder Casting Single Rotor Motor

A rotor motor and casting technology, which is applied in the direction of magnetic circuit rotating parts, electromechanical devices, electrical components, etc., can solve the problems that the structure cannot be formed by die-casting, the utilization rate of magnetic poles is not high, and the drive circuit is complicated, etc., to achieve drive and The effect of convenient speed regulation, reduced material cost, and high utilization rate of magnetic poles

Active Publication Date: 2016-04-27
长沙长利电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the stators of AC permanent magnet motors generally use silicon steel sheets to form a structure, and the structure cannot be formed by die-casting; the magnetic poles of the rotor are mostly permanent magnetic steel; generally, one magnetic pole corresponds to one coil winding, and usually a motor will have Three or more winding coils require a large amount of copper and iron, and the cost is high; at the same time, several windings require several full-bridge drive circuits, and the drive circuits are relatively complicated; there are many processes in the motor manufacturing process, The installation is more complicated, time-consuming and labor-intensive; the structure of the motor rotor usually adopts the structure of the inner rotor or the outer rotor, and the direction of the magnetic field is radial. When working, the coil winding adds control signals according to a certain timing. The disadvantage is that sometimes there is no current flowing through the winding, and the utilization rate of the magnetic pole is not high.

Method used

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  • Magnetic Powder Casting Single Rotor Motor
  • Magnetic Powder Casting Single Rotor Motor
  • Magnetic Powder Casting Single Rotor Motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0032] See figure 1 with figure 2 , see image 3 , The magnetic powder casting single-side rotor motor of this embodiment is composed of a stator 1, a rotor 2, a shaft 3, a bearing 4, a Hall element 5, and a base and a housing that are omitted and not shown in the figure. The rotating shaft 3 is a steel elongated rod-shaped cylindrical part. Bearing 4 is a ball bearing.

[0033] The stator 1 is composed of an upper magnetic pole 11 , a lower magnetic pole 12 , a winding frame 13 and a stator winding 14 . One rotor 2 is provided. Bearing 4 is provided with 2, is divided into upper side bearing 41 and lower side bearing 42 according to upper and lower position.

[0034] See Figure 4 with Figure 5 , the upper magnetic pole 11 of the stator 1 is an integral piece formed by die-casting composite nanocrystalline material. The upper magnetic pole 11 of the stator 1 is composed of an integrated magnetic core 11-1 and a raised asymmetrical magnetic pole 11-2. The magnetic c...

Embodiment 2）

[0051] The magnetic powder casting double-sided rotor motor of this embodiment is the same as that of Embodiment 1 in other respects, except that the permanent magnet poles 22 of the rotor 2 are multi-pole permanent magnet rings made of NdFeB material. Permanent magnetic poles of N poles and S poles are evenly arranged on the permanent magnet ring. The total number of permanent magnet poles is the sum of the number of raised asymmetric poles 11 - 2 of the upper pole 11 and the number of raised asymmetric poles 12 - 2 of the lower pole 11 of the stator 1 . In other words, it is twice the number of protruding asymmetric magnetic poles 11 - 2 of the upper magnetic pole 11 . In this embodiment, 4 N poles and 4 S poles of permanent magnet poles are evenly arranged on the permanent magnet ring. The permanent magnet magnetic ring is glued on the outer periphery of the lower end surface of the base body 21 and is integrally connected with the base body 21 .

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Abstract

The invention provides a magnetic-powder casting-mold unilateral rotor motor. The motor comprises a stator, a rotor, a rotating shaft, bearings and a Hall element. The stator is formed by an upper magnetic pole, a lower magnetic pole, a winding rack and a stator winding. The upper magnetic pole and the lower magnetic pole are provided with several raised and asymmetric magnetic poles. The upper magnetic pole and the lower magnetic pole are fixed to the winding rack. The upper magnetic pole and the lower magnetic pole are one-body components which are formed through carrying out die casting on a composite magnetic powder crystal or a composite nanometer crystal. There is one group of coils which are wound on the winding rack. The rotor is arranged on an upper end of the stator. The rotor is formed by a matrix and a permanent magnet pole. The two bearings are arranged above the rotor and below the lower magnetic pole of the stator respectively. The Hall element is arranged on the winding rack of the stator. The rotating shaft forms interference fit connection with the rotor and the two bearings. Manufacturing cost of the motor is low. The structure and a driving circuit are simple. A magnetic field direction is an axial direction. A utilization rate of the magnetic pole is high. Manufacturing and assembling are easy. Manpower cost can be saved. A torque of the motor with the same size is large.

Description

technical field [0001] The invention relates to the technical field of AC motors, in particular to a permanent magnet AC motor with a magnetic powder cast single-side rotor structure. Background technique [0002] An AC permanent magnet motor consists of a stator and a rotor. At present, the stators of AC permanent magnet motors generally use silicon steel sheets to form a structure, and the structure cannot be formed by die-casting; the magnetic poles of the rotor are mostly permanent magnetic steel; generally, one magnetic pole corresponds to one coil winding, and usually a motor will have Three or more winding coils require a large amount of copper and iron, and the cost is high; at the same time, several windings require several full-bridge drive circuits, and the drive circuits are relatively complicated; there are many processes in the motor manufacturing process, The installation is more complicated, time-consuming and labor-intensive; the structure of the motor roto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K29/08H02K1/17H02K1/02H02K1/27H02K1/18H02K11/215H02K11/21
Inventor 王雁平廉春原张永春
Owner 长沙长利电气有限公司