CN207339459U - A kind of permanent-magnetic synchronous motor rotor - Google Patents
A kind of permanent-magnetic synchronous motor rotor Download PDFInfo
- Publication number
- CN207339459U CN207339459U CN201721162016.8U CN201721162016U CN207339459U CN 207339459 U CN207339459 U CN 207339459U CN 201721162016 U CN201721162016 U CN 201721162016U CN 207339459 U CN207339459 U CN 207339459U
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- permanent magnet
- permanent
- block
- synchronous motor
- charging
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Abstract
The utility model provides a kind of permanent-magnetic synchronous motor rotor, including：Armature spindle (1) and permanent magnet array (2)；Fitted closely between the armature spindle (1) and permanent magnet array (2)；The permanent magnet array (2) includes at least two circumferential charging permanent magnet blocks (21) and at least two radial magnetizing permanent magnetism body blocks (22), and the circumferential direction charging permanent magnet block (21) is identical with the quantity of the radial magnetizing permanent magnetism body block (22)；The circumferential direction charging permanent magnet block (21) is staggered with the radial magnetizing permanent magnetism body block (22), contact surface between the circumferential direction charging permanent magnet block (21) and the radial magnetizing permanent magnetism body block (22) is curved surface, and the magnetizing direction between adjacent radial charging permanent magnet block (22) between adjacent circumferential charging permanent magnet block (21) is opposite.
Description
Technical field
The utility model belongs to permanent-magnet synchronous technical field, is related to a kind of permanent-magnetic synchronous motor rotor.
Background technology
In high-precision application scenario, it is desirable to which permanent magnet synchronous motor has low-down torque fluctuations, higher to obtain
Speed and position control accuracy.For example, momenttum wheel and the control-moment gyro applied to spacecraft are, it is necessary to export very stable
Speed, to meet that the control of the high-precision attitude of spacecraft requires；, it is necessary to drive motor to export in micro-nano positioning and micro-nano operation
Very stable torque, to realize micro-nano positioning accuracy.When ignoring the armature-reaction of three-phase windings, permanent magnet synchronous motor
Torque fluctuations depend on the sine of back emf waveform.And back emf waveform is by permanent-magnet synchronous in permanent magnet synchronous motor
What rotor produced.
At present, in the permanent magnet array of permanent-magnetic synchronous motor rotor, the contact surface between charging permanent magnet block connects for straight line
Contacting surface so that harmonic content is higher in the sine wave magnetic field that permanent magnet array produces, and then causes what permanent magnet synchronous motor produced
Torque fluctuations are excessive, reduce the working performance of permanent magnet synchronous motor, cause the operating accuracy of permanent magnet synchronous motor relatively low.
Utility model content
The technology of the utility model solves the problems, such as：A kind of permanent magnet synchronous motor is overcome the deficiencies of the prior art and provide
Rotor, can solve in the sine wave magnetic field of permanent magnet array generation that harmonic content is higher, and then cause permanent magnet synchronous motor to produce
The problem of raw torque fluctuations are excessive.
The technical solution of the utility model is：A kind of permanent-magnetic synchronous motor rotor, including：Armature spindle and permanent magnet battle array
Row；
Fitted closely between the armature spindle and permanent magnet array；
The permanent magnet array includes at least two circumferential charging permanent magnet blocks and at least two radial magnetizing permanent magnetism body blocks,
The circumferential direction charging permanent magnet block is staggered with the radial magnetizing permanent magnetism body block；
Contact surface between the circumferential direction charging permanent magnet block and the radial magnetizing permanent magnetism body block is curved surface, and
Magnetizing direction between adjacent radial charging permanent magnet block between adjacent circumferential charging permanent magnet block is opposite.
Further, the contact surface between the circumferential charging permanent magnet block and the radial magnetizing permanent magnetism body block is
Sine surface.
Further, the contact surface between the circumferential charging permanent magnet block and the radial magnetizing permanent magnetism body block is
Quadratic surface.
Further, the material of the armature spindle is non-magnetic nonmetallic materials.
Further, when the permanent-magnetic synchronous motor rotor is internal rotor, outer wall and the permanent magnet battle array of the armature spindle
Fitted closely between the surface of row.
Further, the circumferential charging permanent magnet block and the radial magnetizing permanent magnetism body block are uniformly distributed and closely paste
Close the outer wall in the armature spindle.
Further, when the permanent-magnetic synchronous motor rotor is outer rotor, the armature spindle is loop configuration, described turn
Fitted closely between the inner wall of sub- axis and the surface of permanent magnet array.
Further, the circumferential charging permanent magnet block and the radial magnetizing permanent magnetism body block are uniformly distributed and closely paste
Close the inner wall in the armature spindle.
Further, the circumferential charging permanent magnet block is identical with the quantity of the radial magnetizing permanent magnetism body block.
The utility model compared with prior art the advantages of be：
(1) the utility model is by the way that circumferential charging permanent magnet block and the radial magnetizing permanent magnetism body block are staggered, and
And magnetic patch interface is changed into curve shape by rectilinear form, so as to reduce the sine wave magnetic field of permanent magnet array generation
The content of middle harmonic wave, reduces the torque fluctuations that permanent magnet synchronous motor produces, and then lifts the operating accuracy of permanent magnet synchronous motor.
(2) the utility model, can be into one by the way that magnetic patch interface will be configured to sine surface or be quadratic surface
Step reduces the content of harmonic wave in the sine wave magnetic field that permanent magnet array produces, and reduces the torque fluctuations that permanent magnet synchronous motor produces,
And then further lift the operating accuracy of permanent magnet synchronous motor.
(3) the utility model can mitigate rotor weight by the way that the armature spindle is used non-magnetic nonmetallic materials
Meanwhile the vortex of conductor sensing is completely eliminated, rotor loss is reduced, improves electric efficiency.
Brief description of the drawings
Fig. 1 forms structure diagram for a kind of permanent magnet synchronous electric inboard rotor provided by the utility model；
Fig. 2 forms structure diagram for a kind of permanent magnet synchronous motor outer rotor provided by the utility model.
Embodiment
With reference to Fig. 1 and Fig. 2 to the utility model proposes the structure of permanent-magnetic synchronous motor rotor be described in detail：
As shown in Figure 1, a kind of Halbach types permanent magnet synchronous electric inboard rotor, including permanent magnet array 2 and armature spindle 1, institute
State and fitted closely between the outer wall of armature spindle 1 and permanent magnet array 2；
The permanent magnet array 2 includes at least two circumferential charging permanent magnet blocks 21 and at least two radial magnetizing permanent magnetism bodies
Block 22, the circumferential direction charging permanent magnet block 21 are staggered with the radial magnetizing permanent magnetism body block 22, the circumferential direction magnetizing permanent magnetism
Contact surface between body block 21 and the radial magnetizing permanent magnetism body block 22 is curved surface, and adjacent radial charging permanent magnet block
Magnetizing direction between 22 between adjacent circumferential charging permanent magnet block 21 is on the contrary, so that 2 magnetizing direction of permanent magnet array
With 90 ° of changes.
Wherein, the circumferential charging permanent magnet block 21 is identical with the quantity of the radial magnetizing permanent magnetism body block 22, due to being
Permanent magnetism inner rotor core, threephase stator winding are positioned over the outside of permanent magnetism internal rotor.
Further, with sine curve or secondary song between circumferential charging permanent magnet block 21 and radial magnetizing permanent magnetism body block 22
Line connects；On the basis of being connected in straight line or oblique line, by the local directed complete set of permanent magnet blocks shape, by size
Optimization design, on the premise of magnetic field of permanent magnet size is kept, obtains the magnetic signature more with Sine distribution characteristic, so that
Reduce magnetic field harmonics content as much as possible, reduce the torque fluctuations of permanent magnet synchronous motor.
Further, armature spindle 1 uses non-magnetic nonmetallic materials, on the one hand alleviates weight, on the other hand, disappears completely
Except the eddy-current loss for existing due to conductor and triggering, the efficiency of motor is improved, obtains and is easier to realize high-precision motion
The electromechanical linear model of control.
Further, the circumferential charging permanent magnet block 21 and the radial magnetizing permanent magnetism body block 22 are uniformly distributed and tightly
The close outer wall for being fitted in the armature spindle 1.
As shown in Fig. 2, the utility model provides a kind of Halbach types permanent magnet synchronous motor outer rotor, including permanent magnet battle array
Row 2 and armature spindle 1, the armature spindle 1 are loop configuration, are closely pasted between the inner wall and permanent magnet array 2 of the armature spindle 1
Close；
The permanent magnet array 2 includes at least two circumferential charging permanent magnet blocks 21 and at least two radial magnetizing permanent magnetism bodies
Block 22, the circumferential direction charging permanent magnet block 21 are staggered with the radial magnetizing permanent magnetism body block 22, the circumferential direction magnetizing permanent magnetism
Contact surface between body block 21 and the radial magnetizing permanent magnetism body block 22 is curved surface, and adjacent radial charging permanent magnet block
Magnetizing direction between 22 between adjacent circumferential charging permanent magnet block 21 is on the contrary, so that 2 magnetizing direction of permanent magnet array
With 90 ° of changes.
Wherein, the circumferential charging permanent magnet block 21 is identical with the quantity of the radial magnetizing permanent magnetism body block 22, due to being
Permanent-magnetic outer rotor structure, threephase stator winding are positioned over the inner side of permanent-magnetic outer rotor.
Further, the circumferential charging permanent magnet block 21 and the radial magnetizing permanent magnetism body block 22 are uniformly distributed and tightly
The close inner wall for being fitted in the armature spindle 1.
Other statements of permanent magnet synchronous motor outer rotor provided by the utility model may be referred to turn in permanent magnet synchronous motor
The corresponding statement of son, details are not described herein.
The operation principle of permanent-magnetic synchronous motor rotor provided by the utility model is described in detail below：This practicality is new
The permanent-magnetic synchronous motor rotor of type using curved surface as circumferential charging permanent magnet block 21 and the radial magnetizing permanent magnetism body block 22 it
Between interface.After electrical power, the permanent magnet array 2 using curved surface as interface, can produce harmonic content very little
Sinusoidal magnetic field is distributed, so that the torque fluctuations of permanent magnet synchronous motor are smaller, it is that high-precision speed control and position control
Create conditions, meet the needs of high-precision applications.
The content not being described in detail in the utility model specification belongs to the known technology of those skilled in the art.
Claims (9)
- A kind of 1. permanent-magnetic synchronous motor rotor, it is characterised in that including：Armature spindle (1) and permanent magnet array (2)；Fitted closely between the armature spindle (1) and permanent magnet array (2)；The permanent magnet array (2) includes at least two circumferential charging permanent magnet blocks (21) and at least two radial magnetizing permanent magnetism bodies Block (22), the circumferential direction charging permanent magnet block (21) are staggered with the radial magnetizing permanent magnetism body block (22)；Contact surface between the circumferential direction charging permanent magnet block (21) and the radial magnetizing permanent magnetism body block (22) is curved surface, And the magnetizing direction between adjacent radial charging permanent magnet block (22) between adjacent circumferential charging permanent magnet block (21) is opposite.
- A kind of 2. permanent-magnetic synchronous motor rotor according to claim 1, it is characterised in that the circumferential direction charging permanent magnet block (21) contact surface between the radial magnetizing permanent magnetism body block (22) is sine surface.
- A kind of 3. permanent-magnetic synchronous motor rotor according to claim 1, it is characterised in that the circumferential direction charging permanent magnet block (21) contact surface between the radial magnetizing permanent magnetism body block (22) is quadratic surface.
- A kind of 4. permanent-magnetic synchronous motor rotor according to claim 1, it is characterised in that the material of the armature spindle (1) For non-magnetic nonmetallic materials.
- 5. according to a kind of permanent-magnetic synchronous motor rotor of claim 1-4 any one of them, it is characterised in that when the permanent magnetism is same When step rotor is internal rotor, fitted closely between the outer wall of the armature spindle (1) and the surface of permanent magnet array (2).
- A kind of 6. permanent-magnetic synchronous motor rotor according to claim 5, it is characterised in that the circumferential direction charging permanent magnet block (21) it is uniformly distributed with the radial magnetizing permanent magnetism body block (22) and is fitted tightly over the outer wall of the armature spindle (1).
- 7. according to a kind of permanent-magnetic synchronous motor rotor of claim 1-4 any one of them, it is characterised in that when the permanent magnetism is same When step rotor is outer rotor, the armature spindle (1) is loop configuration, the inner wall and permanent magnet array of the armature spindle (1) (2) fitted closely between surface.
- A kind of 8. permanent-magnetic synchronous motor rotor according to claim 7, it is characterised in that the circumferential direction charging permanent magnet block (21) it is uniformly distributed with the radial magnetizing permanent magnetism body block (22) and is fitted tightly over the inner wall of the armature spindle (1).
- 9. according to a kind of permanent-magnetic synchronous motor rotor of claim 1-4 any one of them, it is characterised in that the circumferential direction magnetizes Permanent magnet blocks (21) are identical with the quantity of the radial magnetizing permanent magnetism body block (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721162016.8U CN207339459U (en) | 2017-09-12 | 2017-09-12 | A kind of permanent-magnetic synchronous motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721162016.8U CN207339459U (en) | 2017-09-12 | 2017-09-12 | A kind of permanent-magnetic synchronous motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207339459U true CN207339459U (en) | 2018-05-08 |
Family
ID=62372259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721162016.8U Active CN207339459U (en) | 2017-09-12 | 2017-09-12 | A kind of permanent-magnetic synchronous motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207339459U (en) |
-
2017
- 2017-09-12 CN CN201721162016.8U patent/CN207339459U/en active Active
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