CN201194346Y

CN201194346Y - Tangential magnetic steel permanent magnet motor

Info

Publication number: CN201194346Y
Application number: CNU200820057072XU
Authority: CN
Inventors: 赵朝会; 刘军; 李萍
Original assignee: Shanghai Dianji University
Current assignee: Shanghai Dianji University
Priority date: 2008-04-09
Filing date: 2008-04-09
Publication date: 2009-02-11
Anticipated expiration: 2018-04-09

Abstract

The utility model provides a simplified tangential-set magnet permanent magnet motor, which is composed of a stator and a permanent magnet rotor facing the stator, an air gap is between the stator and the permanent magnet, the permanent magnet rotor is composed of a rotating shaft in the rotor axle core and a permanent magnet evenly surrounding the rotating shaft. The utility model has the advantages of simple structure, simple assembly, high efficiency and large torque, can be widely used in industrial field and household appliance industry. With the development of the research of wind power generation and the other renewable energy, the motor will become an ideal model of permanent direct driven motor.

Description

A kind of tangential-set magnet permanent motor

Technical field

The utility model relates to a kind of ac synchronous motor, particularly relates to a kind of tangential-set magnet permanent motor.

Background technology

Existing cutting orientation structure permagnetic synchronous motor, in its permanent magnet rotor structure, permanent magnet is the parallel operation state, and every utmost point magnetic flux of motor is provided by two rare-earth permanent magnets, the magnetic potential of every rare-earth permanent magnet provides every pair of utmost point magnetic potential, so the gap density of motor can be improved.But the leakage field of rotating shaft side permanent magnet is relatively large, and the complex structure of motor p-m rotor, the assembling difficulty.Prior art has proposed a kind of tangential magnet-steel motor with auxiliary magnetic pole at this technical problem, the motor of this kind structure is because the existence of auxiliary magnetic pole, though can reduce the leakage field of rotating shaft side permanent magnet effectively, and can save non-magnetism bush, the electric machine structure complexity.

Therefore, solve the contradiction between the close and electric machine structure of motor gas-gap magnetic, design do not increase the electric machine structure complexity, assembling is simple, can improve the motor of air gap flux density simultaneously again, become those skilled in the art and want the problem that solves.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of and can reduce the leakage field of rotating shaft side permanent magnet and the tangential permanent magnet motor of designs simplification.

For achieving the above object, the utility model adopts following technical scheme:

A kind of tangential-set magnet permanent motor comprises a stator and a p-m rotor, and this p-m rotor has an air gap therebetween in the face of stator, and described p-m rotor is by the rotating shaft that is positioned at rotor axis, and the equally distributed permanent magnet of twisted rotary shaft constitutes.

Described tangential-set magnet permanent machine shaft can be a permeability magnetic material, also can be non-magnet material.

The utility model electric machine structure is simplified, and assembling is simple, and efficient height, torque are big, can be widely used in industrial circle and household electric appliances.Along with deepening continuously of regenerative resource researchs such as wind power generation, this motor will become a desirable type of permanent magnet direct driving motor.

Description of drawings

Accompanying drawing 1 is the schematic diagram of existing tangential-set magnet permanent motor;

Accompanying drawing 2 is schematic diagrames of the utility model tangential-set magnet permanent motor;

Accompanying drawing 3 is schematic diagrames of the p-m rotor of existing tangential-set magnet permanent motor;

Accompanying drawing 4 is p-m rotor schematic diagrames of the utility model tangential-set magnet permanent motor;

Accompanying drawing 5 is magnetic line of force distribution schematic diagrams of existing tangential-set magnet permanent motor p-m rotor;

Accompanying drawing 6 is magnetic line of force distribution schematic diagrams of the utility model tangential-set magnet permanent motor p-m rotor;

Accompanying drawing 7 is another magnetic line of force distribution schematic diagrams of the utility model tangential-set magnet permanent motor p-m rotor;

Among the figure, 1,11, stator, 2,12, p-m rotor, 3,13, rotating shaft, 4,14, permanent magnet, 5,15, air gap, 6, magnetic shield, 20, leakage field.

Embodiment

Provide embodiment of the present utility model below in conjunction with accompanying drawing.

Referring to accompanying drawing 1.This figure shows the schematic diagram of existing tangential-set magnet permanent motor.As shown in the figure, the magneto of existing cutting orientation structure is by the magnetic shield 6 of stator 1, p-m rotor 2, rotating shaft 3, the permanent magnets 4 that are embedded in p-m rotor 2 centres unshakable in one's determination, minimizing rotating shaft side permanent magnet 4 leakage fields, and air gap 5 is formed.The complex structure of such motor p-m rotor, the assembling difficulty.

Be illustrated in figure 2 as the schematic diagram of a kind of tangential-set magnet permanent motor of the utility model.A kind of tangential-set magnet permanent motor of the utility model comprises stator 11 and p-m rotor 12, this p-m rotor 12 is in the face of stator 11, have an air gap 15 therebetween, described p-m rotor 12 is by the rotating shaft 13 that is positioned at rotor 12 axle center, and twisted rotary shaft 13 equally distributed permanent magnets 14 constitute.The structure of the stator 11 of the tangential-set magnet permanent motor that the utility model is simplified and the stator 1 of existing tangential-set magnet permanent motor is identical, and stator core is formed by stacking by silicon steel sheet.P-m rotor then is on the basis of existing tangential-set magnet permanent motor p-m rotor, utilizes the reach capacity permanent magnet of condition of magnet steel width to replace the permanent magnet that uses in the existing tangential-set magnet permanent motor, and the transformation of the way forms.

Because this improvement has well reduced the leakage field of existing tangential-set magnet permanent motor shaft side permanent magnet, therefore, during fabrication, not only can save the magnetic shield that is used for reducing rotating shaft side p-m rotor leakage field in the existing tangential-set magnet permanent motor, and can omit the auxiliary magnetic pole in the existing tangential-set magnet permanent motor.

The tangential-set magnet permanent machine shaft that the utility model is simplified can be a permeability magnetic material, also can be non-magnet material.Can be 3 phase motors, also can be polyphase machine; Generator can be made, also motor can be made; DC generator can be made, also AC machine can be made.

Below further by illustrating advantage of the present utility model.Accompanying drawing 3 is the structural representation of a kind of p-m rotor of existing tangential-set magnet permanent motor, the permanent magnet 4 that p-m rotor 2 is distributed by rotating shaft 3, twisted rotary shaft 3, and the magnetic shield 6 that is arranged between rotating shaft 3 and the permanent magnet 4 constitutes, and this magnetic shield 6 is used to reduce the leakage field p-m rotor of rotating shaft side permanent magnet.Accompanying drawing 4 is the structural representation of a kind of p-m rotor of the utility model tangential-set magnet permanent motor, and p-m rotor 12 is by rotating shaft 13, and the permanent magnet 14 that twisted rotary shaft 13 distributes constitutes.As seen from the figure, p-m rotor of the present utility model can omit auxiliary magnetic pole and magnetic shield with respect to existing tangential-set magnet permanent motor, and electric machine structure is simplified.

Further, see also Fig. 5, Fig. 6 and Fig. 7, these 3 figure have illustrated advantage of the present utility model from the distribution aspect of the magnetic line of force.Fig. 5 is the magnetic line of force distribution map of existing tangential-set magnet permanent motor p-m rotor.Leakage field 20 is bigger.Fig. 6 is the magnetic line of force distribution map of the p-m rotor of the utility model when rotating shaft is non-magnet material, and Fig. 7 is the magnetic line of force distribution map of the p-m rotor of the utility model when rotating shaft is permeability magnetic material, and for Fig. 5, leakage field 20 is less among Fig. 6 and Fig. 7.Therefore, the utility model has not only effectively improved air gap flux density, and by the same polarity of the utilizing adjacent two permanent magnets principle of repelling each other, has also obviously reduced the leakage field of rotating shaft side permanent magnet.

The advantages such as the utlity model has designs simplification, assembling is simple, and efficient height, torque are big can be by extensively General for industrial circle and household electric appliances. Along with deepening continuously of the regenerative resource researchs such as wind-power electricity generation, This motor will become a desirable type of permanent magnet direct driving motor.

Claims

1. tangential-set magnet permanent motor, comprise a stator and a p-m rotor, this p-m rotor has an air gap therebetween in the face of stator, it is characterized in that: described p-m rotor is by the rotating shaft that is positioned at rotor axis, and the equally distributed permanent magnet of twisted rotary shaft constitutes.

2. tangential-set magnet permanent motor according to claim 1 and 2 is characterized in that: described tangential-set magnet permanent machine shaft is a permeability magnetic material.

3. tangential-set magnet permanent motor according to claim 1 and 2 is characterized in that: described tangential-set magnet permanent machine shaft is a non-magnet material.