CN216959629U - Double-stator flux reversing motor with Halbach permanent magnet array - Google Patents
Double-stator flux reversing motor with Halbach permanent magnet array Download PDFInfo
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- CN216959629U CN216959629U CN202123334097.4U CN202123334097U CN216959629U CN 216959629 U CN216959629 U CN 216959629U CN 202123334097 U CN202123334097 U CN 202123334097U CN 216959629 U CN216959629 U CN 216959629U
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- 230000004907 flux Effects 0.000 title claims abstract description 14
- 238000004804 winding Methods 0.000 claims abstract description 37
- 235000019994 cava Nutrition 0.000 claims 1
- 238000002955 isolation Methods 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The utility model discloses a double-stator flux reversal motor with a Halbach permanent magnet array, which comprises an outer stator, a rotor, an inner stator and a rotating shaft which are coaxially arranged from outside to inside in sequence, wherein a plurality of outer stator slots are formed in the inner side of the outer stator to form a plurality of salient pole teeth, the outer surface of the inner stator is also inwards sunken to form a plurality of salient pole teeth, a plurality of permanent magnets which are tightly attached to each other and are magnetized in a Halbach mode are arranged at the slot opening of each outer stator slot, a set of armature windings are arranged on the salient pole teeth of the outer stator and the inner stator, the rotor is of an inner-outer double salient pole structure, a magnetic isolation sleeve is arranged in the middle of the rotor to divide the rotor into two independent magnetic circuits, and the inner stator consists of a stator core and the armature windings. Compared with the prior art, the salient pole teeth of the outer stator and the inner stator are respectively provided with a set of armature windings and share one rotor, so that the torque density of the motor is improved, and the instability of the traditional motor caused by the fact that the windings are sleeved on the rotor and the electric brushes and the slip rings are added to the traditional motor is avoided.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a double-stator flux reversal motor technology with a Halbach permanent magnet array.
Background
In recent years, stator permanent magnet brushless motors represented by flux reversal permanent magnet motors appear, and the stator permanent magnet brushless motors break through the technical bottlenecks of the traditional rotor permanent magnet motors in the aspects of body structure, fault tolerance performance, speed regulation capacity and the like, so that the stator permanent magnet brushless motors are widely concerned by domestic and foreign scholars.
The flux reversal permanent magnet motor is a stator permanent magnet type brushless motor in which permanent magnets are directly mounted on the surfaces of stator teeth. The structure is characterized in that two permanent magnets with opposite magnetization directions are arranged on the surface of each stator tooth, which is in contact with an air gap. The rotor has simple structure and no winding or permanent magnet. Because the permanent magnet is arranged on the side of the stator, the permanent magnet does not need complex processes and measures to fix, the effective length of the air gap of the motor can be obviously reduced, and the power density is improved; in addition, the heat generated by the permanent magnet can be directly transmitted to the shell through the stator iron core, so that the heat dissipation is convenient, and the improvement of the current density is facilitated. However, the motor also has many disadvantages such as small torque density, large torque ripple, and the like. In order to improve the torque density, some researchers have proposed a double-armature flux-reversal permanent magnet motor. Unlike conventional flux-reversing motors, they have two sets of armature windings, placed in the stator slots and rotor slots, respectively. However, the double-armature flux-reversing motor may generate electric sparks due to the presence of the brushes and the slip rings, which may have certain influence on the safe and stable operation of the motor system.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: aiming at the defects of the prior art, the utility model provides a double-stator flux reversal motor with a Halbach permanent magnet array, which is characterized in that an inner stator and an outer stator are designed, the inner stator and the outer stator are respectively provided with a set of armature windings and share a rotor, and the instability of system operation caused by adding an electric brush and a slip ring into the motor is avoided while the torque density of the motor is improved.
The technical scheme is as follows: the utility model discloses a double-stator flux reversal motor with a Halbach permanent magnet array, which comprises an outer stator, a rotor, an inner stator and a rotating shaft, wherein the outer stator, the rotor, the inner stator and the rotating shaft are coaxially arranged from outside to inside, a plurality of outer stator slots are formed in the inner side of the outer stator to form a plurality of salient pole teeth, the outer surface of the inner stator is also inwards sunken to form a plurality of salient pole teeth, a plurality of permanent magnets which are tightly attached to each other and are magnetized in a Halbach mode are arranged at the notch of each outer stator slot, a set of armature winding is arranged on each salient pole tooth of the outer stator and the inner stator, the rotor is of an inner and outer double-salient pole structure, a magnetism isolating sleeve (8) is arranged in the middle of the rotor to divide the rotor into two independent magnetic circuits.
Furthermore, the number of the salient pole teeth of the outer stator and the inner stator is equal and is uniformly distributed, and the salient pole teeth of each of the outer stator and the inner stator are on the same radial central line.
Further, 3 permanent magnets which are tightly attached to each other and are magnetized in a Halbach mode are arranged at the notch of each outer stator slot.
Furthermore, the inner and outer salient pole teeth of the rotor of the inner and outer double salient pole structure are equal in number, opposite in direction and uniformly distributed, and are on the same radial central line.
Further, armature windings wound on salient pole teeth of the outer stator and the inner stator are respectively an outer stator winding and an inner stator winding, the outer stator winding and the inner stator winding are both three-phase symmetrical alternating current windings, and the outer stator winding and the inner stator winding are connected in series or in parallel.
Has the advantages that:
1) the utility model not only keeps the high torque density of the double-armature magnetic flux reverse motor, but also does not need to add an electric brush and a slip ring, thereby improving the operation stability of the motor system.
2) The permanent magnet with the Halbach array is placed at the opening of the outer stator slot, so that the torque density and the power density of the novel motor are further improved.
3) The magnetic isolation sleeve arranged in the rotor completely isolates the magnetic circuits of the inner motor and the outer motor, thereby avoiding the mutual coupling between the magnetic circuits.
4) The armature windings on the outer stator and the inner stator can be selected to be connected in parallel and in series according to actual requirements, and the practicability of the motor is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic diagram of an arrangement of permanent magnets according to an embodiment of the present invention.
Wherein, 1, outer stator; 2. an outer stator winding; 3. a permanent magnet; 4. a rotor; 5. a rotating shaft; 6. an inner stator; 7. an inner stator winding; 8. magnetic isolation sleeve.
Detailed Description
In order to make the technical means, the creating features, the beneficial effects and the achieving objects of the utility model more obvious and understandable, the utility model will be further described with reference to the following detailed description.
The utility model discloses a double-stator flux reversal motor with a Halbach permanent magnet array, as shown in figure 1, comprising: the rotor comprises an outer stator 1, a rotor 4, a rotating shaft 5 and an inner stator 6, wherein the outer stator 1 is coaxially sleeved outside the rotor 4, the inner stator 6 is coaxially sleeved inside the rotor 4, the outer stator, the inner stator, the rotor 4 and the inner stator are coaxially installed, and the rotating shaft 5 is coaxially arranged inside the inner stator 6.
The outer stator 1 is composed of an outer stator core, a permanent magnet 3 and an outer stator winding 2, a plurality of outer stator slots are formed in the inner side of the outer stator core to form a plurality of salient pole teeth, referring to fig. 1, the 12-pole salient pole teeth are taken as an example for the implementation mode, and the permanent magnet 3 is a Halbach array and is distributed at the slot openings of the outer stator slots. The outer stator winding 2 is wound on salient pole teeth of the outer stator 1.
The rotor 4 is located between the outer stator 1 and the inner stator 6, and has no winding or permanent magnet, the rotor 4 is of an inner and outer double salient pole structure, the number of inner and outer salient pole teeth of the inner and outer double salient pole structure rotor 4 is equal, the embodiment is described by taking an example 10, the directions are opposite, the inner and outer salient pole teeth are uniformly distributed, and the inner and outer salient pole teeth are on the same radial central line. A magnetic isolation sleeve 8 is arranged in the middle of the rotor 4 to separate the rotor 4 into two independent magnetic circuits.
The inner stator 6 is composed of an inner stator iron core and an inner stator winding 7. The outer surface of the inner stator 6 is also recessed inwards to form a plurality of salient pole teeth, in the present embodiment, the number of the salient pole teeth of the inner stator 6 is equal to the number of the salient pole teeth of the outer stator 1, and the description has been given by taking 12 poles as an example. And the salient pole teeth of each pair of inner stators 6 and the salient pole teeth of the outer stator 1 are on the same radial central line. And the salient pole teeth of the inner stator 6 and the salient pole teeth of the outer stator 1 are uniformly distributed at intervals in opposite directions, one inward and the other outward, see figure 1.
The permanent magnets 3 are distributed as shown in fig. 2, and 3 permanent magnets which are tightly attached to each other and are magnetized in a Halbach mode are arranged at the notch of each outer stator slot. The torque density of the motor is improved.
The outer stator winding 2 and the inner stator winding 7 are three-phase symmetrical alternating current windings and can be connected in series or in parallel, and the fault tolerance of the motor can be improved by connecting in parallel.
In the embodiment, the inner stator and the outer stator are respectively provided with a set of armature windings and share one rotor, so that the torque density of the motor is improved, and the instability of the traditional motor caused by the fact that the windings are sleeved on the rotor and the electric brushes and the slip rings are added to the traditional motor to operate the system is avoided.
The technical solutions and advantages of the present invention have been described in detail with reference to the above embodiments, it should be understood that the above embodiments are only specific examples of the present invention and should not be construed as limiting the present invention, and any modifications, additions and equivalents made within the scope of the principles of the present invention should be included in the scope of the present invention.
Claims (5)
1. The utility model provides a two stator flux reversal motors with Halbach permanent magnet array which characterized in that, includes outer stator (1), rotor (4), inner stator (6) and pivot (5) that set up with the axle center from outside-in, a plurality of outer stator grooves are seted up to outer stator (1) inboard, form a plurality of salient pole teeth, inner stator (6) surface also inwards caves in and forms a plurality of salient pole teeth, every the notch department in outer stator groove all is provided with a plurality of blocks and hugs closely each other and charges magnetic permanent magnet (3) with Halbach mode, outer stator (1) with all be equipped with one set of armature winding on the salient pole tooth of inner stator (6), rotor (4) are inside and outside double salient pole structure, and install at the middle of them and separate magnetic sleeve (8), will the rotor is separated for two independent magnetic circuits.
2. A double stator flux reversing electric machine with Halbach permanent magnet array according to claim 1, characterized in that the number of salient pole teeth of the outer stator (1) and the inner stator (6) are equal and evenly distributed, and the salient pole teeth of each of the outer stator (1) and the inner stator (6) are on the same radial center line.
3. A double stator flux reversing electric machine with a Halbach array of permanent magnets according to claim 1, wherein each outer stator slot is provided with 3 permanent magnets at the slot mouth that are close to each other and charged in a Halbach manner.
4. The double-stator flux reversal motor with the Halbach permanent magnet array according to claim 1, characterized in that the number of the inner and outer salient pole teeth of the rotor (4) with the inner and outer double salient pole structures is equal, the directions of the inner and outer salient pole teeth are opposite and are uniformly distributed, and the inner and outer salient pole teeth are on the same radial central line.
5. The double-stator flux-reversing motor with the Halbach permanent magnet array according to claim 1 is characterized in that armature windings wound on salient pole teeth of the outer stator (1) and the inner stator (6) are respectively an outer stator winding (2) and an inner stator winding (7), the outer stator winding (2) and the inner stator winding (7) are three-phase symmetrical alternating current windings, and the outer stator winding (2) and the inner stator winding (7) are connected in series or in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123334097.4U CN216959629U (en) | 2021-12-28 | 2021-12-28 | Double-stator flux reversing motor with Halbach permanent magnet array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123334097.4U CN216959629U (en) | 2021-12-28 | 2021-12-28 | Double-stator flux reversing motor with Halbach permanent magnet array |
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|---|---|
| CN216959629U true CN216959629U (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123334097.4U Active CN216959629U (en) | 2021-12-28 | 2021-12-28 | Double-stator flux reversing motor with Halbach permanent magnet array |
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| CN (1) | CN216959629U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115296501A (en) * | 2022-08-30 | 2022-11-04 | 山东大学 | Double-stator single-rotor permanent magnet synchronous motor |
-
2021
- 2021-12-28 CN CN202123334097.4U patent/CN216959629U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115296501A (en) * | 2022-08-30 | 2022-11-04 | 山东大学 | Double-stator single-rotor permanent magnet synchronous motor |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shanghai Yanqiao Information Technology Co.,Ltd. Assignor: HUAIYIN INSTITUTE OF TECHNOLOGY Contract record no.: X2022980020273 Denomination of utility model: A Double Stator Flux Reversing Motor with Halbach Permanent Magnet Array Granted publication date: 20220712 License type: Common License Record date: 20221108 |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231107 Address after: No. 106, Lane 1065, Shenzhou Road, Fengxian District, Shanghai, 200000 Patentee after: SHANGHAI LIUSHENG MOTOR Co.,Ltd. Address before: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee before: Dragon totem Technology (Hefei) Co.,Ltd. Effective date of registration: 20231107 Address after: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee after: Dragon totem Technology (Hefei) Co.,Ltd. Address before: 223400 8th floor, Anton building, 10 Haian Road, Lianshui, Huaian, Jiangsu Patentee before: HUAIYIN INSTITUTE OF TECHNOLOGY |
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| TR01 | Transfer of patent right |