CN112688519A - Stator permanent magnet type axial magnetic field permanent magnet motor - Google Patents
Stator permanent magnet type axial magnetic field permanent magnet motor Download PDFInfo
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- CN112688519A CN112688519A CN202011595366.XA CN202011595366A CN112688519A CN 112688519 A CN112688519 A CN 112688519A CN 202011595366 A CN202011595366 A CN 202011595366A CN 112688519 A CN112688519 A CN 112688519A
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Abstract
The invention relates to a stator permanent magnet type axial magnetic field permanent magnet motor which comprises a first permanent magnet stator, a first rotor, an armature stator, a second rotor and a second permanent magnet stator which are coaxial and sequentially arranged, wherein the first permanent magnet stator and the second permanent magnet stator are identical in structure and symmetrically arranged; the first rotor and the second rotor are identical in structure and are symmetrically arranged. The first permanent magnet stator and the second permanent magnet stator both comprise permanent magnet stator supports, a plurality of permanent magnet stator cores which are uniformly distributed circumferentially are arranged on the permanent magnet stator supports, and a high-coercivity permanent magnet is arranged between every two adjacent permanent magnet stator cores; the armature stator comprises an armature stator support, a plurality of armature stator iron cores which are uniformly distributed in the circumference are arranged on the armature stator support in a row, and an armature winding is wound on each armature stator iron core. The permanent magnet and the armature winding are arranged on different stators, so that the design freedom degree of electromagnetic load is increased, the space conflict among the electromagnetic loads of the existing stator permanent magnet type axial magnetic field permanent magnet motor is solved, and the torque density of the motor is improved.
Description
The technical field is as follows:
the invention relates to a stator permanent magnet type axial magnetic field permanent magnet motor.
Background art:
with the advent of high performance permanent magnet materials, permanent magnet synchronous motors are also rapidly developing. Among permanent magnet motors, the axial magnetic field permanent magnet motor can be greatly applied to the aspects of electric automobiles, wind power generation, ship driving, heart pumps and the like due to the characteristics of high power density, high torque density, high efficiency and high integration level. Generally, the axial magnetic field permanent magnet motor structure is classified according to the number of stators and rotors, and can be divided into a single-stator single-rotor structure, a double-stator single-rotor structure, a single-stator double-rotor structure and a multi-stator multi-rotor structure. The stator can be divided into 2 types of structures with iron cores and 2 types of structures without iron cores according to the existence of the iron cores of the stator, wherein the structure with the iron cores of the stator can be divided into a slotted structure and a slotless structure according to the existence of the slots of the stator. However, most of the existing axial magnetic field permanent magnet motors adopt a rotor permanent magnet structure, and have the following main problems: 1) the permanent magnet is placed on a rotor which is difficult to radiate heat, and the permanent magnet can be irreversibly demagnetized due to high temperature, so that the performance of the motor is seriously influenced; 2) in order to overcome the centrifugal force during high-speed operation, a fixing device needs to be installed on the rotor.
In order to overcome the defects of a rotor permanent magnet type axial magnetic field permanent magnet motor, the prior art provides a stator permanent magnet type axial magnetic field permanent magnet synchronous motor scheme. Compared with a rotor permanent magnet type axial magnetic field permanent magnet motor, the stator permanent magnet type axial magnetic field permanent magnet motor has incomparable advantages in the aspects of heat dissipation and high speed. However, the electromagnetic loads of the existing stator permanent magnet type axial magnetic field permanent magnet motor are all located on the stator, and electromagnetic load conflict is serious, so that the torque density of the motor is restricted to be further improved. Therefore, in order to overcome the defects of the existing stator permanent magnet type axial magnetic field permanent magnet motor, a novel stator permanent magnet type axial magnetic field permanent magnet motor is developed, and the novel stator permanent magnet type axial magnetic field permanent magnet motor has important engineering application value for further improving the torque density of the motor.
The invention content is as follows:
the invention aims at solving the problems in the prior art, namely, the invention aims to provide a stator permanent magnet type axial magnetic field permanent magnet motor, which increases the design freedom of electromagnetic load and further improves the torque density of the motor.
In order to achieve the purpose, the invention adopts the technical scheme that: a stator permanent magnet type axial magnetic field permanent magnet motor comprises a first permanent magnet stator, a first rotor, an armature stator, a second rotor and a second permanent magnet stator which are coaxial and sequentially arranged, wherein the first permanent magnet stator and the second permanent magnet stator are identical in structure and respectively comprise a permanent magnet stator support, a plurality of permanent magnet stator cores which are uniformly distributed along the circumference are arranged on the permanent magnet stator support, and a high-coercivity permanent magnet is arranged between every two adjacent permanent magnet stator cores; the armature stator comprises an armature stator support, a plurality of armature stator iron cores which are uniformly distributed along the circumference are arranged on the armature stator support, and armature windings are wound on the armature stator iron cores.
Furthermore, the permanent magnet stator core comprises a first stator yoke and first stator teeth, the first stator teeth are arranged on one side, facing the armature stator, of the first stator yoke, and the high-coercivity permanent magnet is embedded between the first stator yokes of the two adjacent permanent magnet stator cores and is distributed along the radial direction.
Furthermore, the permanent magnet stator support is of an annular disc-shaped structure, a plurality of permanent magnet stator slots corresponding to the positions of the permanent magnet stator cores are formed in the permanent magnet stator support, and the permanent magnet stator cores are arranged in the permanent magnet stator slots.
Furthermore, the first rotor and the second rotor have the same structure and respectively comprise a circular disc-shaped rotor support, a plurality of rotor core slots which are uniformly distributed along the circumference and extend along the radial direction are arranged on the rotor support, and a rotor core is arranged in each rotor core slot.
Further, the armature stator core comprises a second stator yoke, two sides of the second stator yoke are respectively provided with second stator teeth, and the second stator teeth on the two sides respectively face the first rotor and the second rotor; the armature winding adopts a concentrated winding and is wound on a second stator yoke of the armature stator core.
Furthermore, the armature stator support is of a circular ring disc-shaped structure, a plurality of armature stator slots corresponding to the positions of the armature stator cores are formed in the armature stator support, and the armature stator cores are arranged in the armature stator slots.
Further, the permanent magnet stator support, the armature stator support and the rotor support are all made of non-magnetic materials.
Compared with the prior art, the invention has the following effects: the permanent magnet motor has reasonable design, the permanent magnet and the armature winding are positioned on different stators, the design freedom degree of electromagnetic load is increased, the space conflict among the electromagnetic loads of the existing stator permanent magnet type axial magnetic field permanent magnet motor is solved, and the torque density of the motor is improved.
Description of the drawings:
FIG. 1 is a schematic diagram of an exploded view of an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating an exploded internal structure of the embodiment of the present invention;
fig. 3 is a schematic view of a configuration of a permanent magnet stator core in an embodiment of the present invention;
FIG. 4 is a schematic view of a permanent magnet pole in an embodiment of the invention;
fig. 5 is a schematic view showing the construction of an armature stator core in the embodiment of the invention;
fig. 6 is a schematic view showing a configuration of an armature stator core in which an armature winding is embedded in an embodiment of the present invention.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1 to 6, the stator permanent magnet type axial magnetic field permanent magnet motor of the present invention includes a first permanent magnet stator 1, a first rotor 2, an armature stator 3, a second rotor 4, and a second permanent magnet stator 5, which are coaxially and sequentially disposed, wherein the first permanent magnet stator 1 and the second permanent magnet stator 5 have the same structure and are symmetrically disposed; the first rotor 2 and the second rotor 4 are identical in structure and are symmetrically arranged. The first permanent magnet stator 1 and the second permanent magnet stator 5 both comprise permanent magnet stator supports 6, a plurality of permanent magnet stator iron cores 7 uniformly distributed along the circumference are arranged on each permanent magnet stator support 6, and high-coercivity permanent magnets 8 are arranged between every two adjacent permanent magnet stator iron cores 7; the armature stator 3 comprises an armature stator support 9, a plurality of armature stator cores 10 are uniformly distributed along the circumference on the armature stator support 9, and armature windings 11 are wound on the armature stator cores 10. The permanent magnet and the armature winding are arranged on different stators, so that the design freedom degree of electromagnetic load is increased, the space conflict among the electromagnetic loads of the existing stator permanent magnet type axial magnetic field permanent magnet motor is solved, and the torque density of the motor is improved.
In this embodiment, the permanent magnet stator core 7 includes a first stator yoke 12 and a first stator tooth 13, the first stator tooth 13 is disposed on a side of the first stator yoke 12 facing the armature stator 3, and the high coercive force permanent magnet 8 is embedded between the first stator yokes 12 of two adjacent permanent magnet stator cores 7 and distributed in the radial direction.
In this embodiment, the permanent magnet stator support 6 is made of a non-magnetic material and has a circular disc-shaped structure, a plurality of permanent magnet stator slots corresponding to the positions of the permanent magnet stator cores are formed in the permanent magnet stator support 6, and each permanent magnet stator core is disposed in each permanent magnet stator slot.
In this embodiment, each of the first rotor 2 and the second rotor 4 includes a rotor support 14 made of a non-magnetic material and having a circular disc shape, the rotor support 14 is provided with a plurality of rotor core slots which are uniformly distributed along a circumference and extend along a radial direction, and a rotor core 15 is disposed in each rotor core slot.
In this embodiment, the armature stator core 10 includes a second stator yoke 16, two sides of the second stator yoke 16 are respectively provided with second stator teeth 17, and the second stator teeth 17 on two sides face the first rotor 2 and the second rotor 4 respectively; the armature winding 11 is a concentrated winding and is wound around the second stator yoke 16 of the armature stator core 10, as shown in fig. 5.
In this embodiment, the armature stator bracket 9 is made of a non-magnetic material and has a circular disc-shaped structure, the armature stator bracket 9 is provided with a plurality of armature stator slots corresponding to the positions of a plurality of armature stator cores, and the armature stator core 10 is disposed in the armature stator slot.
In this embodiment, the high coercive force permanent magnet 8 is made of NdFeB material.
In the present embodiment, the number of the permanent magnet stator slots and the permanent magnet stator cores 7 of the first permanent magnet stator 1 and the second permanent magnet stator 5 is 24, and the number of the high coercive force permanent magnets 8 is 12. The number of the armature stator cores 10 of the armature stator 3 is 12, the number of the armature windings 11 is 12, and the number of the stator teeth of the armature stator 3 is 12.
The invention has the advantages that: the permanent magnet and the armature winding are arranged on different stators, so that the design freedom degree of electromagnetic load is increased, the space conflict among the electromagnetic loads of the permanent magnet motor with the existing stator permanent magnet type axial magnetic field is solved, the torque density of the motor is improved, and the armature stator, the permanent magnet stator and the rotor of the motor can be processed in a modularized mode, so that the difficulty and the cost of the production and processing technology are reduced.
If the invention discloses or relates to parts or structures which are fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (7)
1. A stator permanent magnet type axial magnetic field permanent magnet motor is characterized in that: the permanent magnet motor comprises a first permanent magnet stator, a first rotor, an armature stator, a second rotor and a second permanent magnet stator which are coaxial and sequentially arranged, wherein the first permanent magnet stator and the second permanent magnet stator are identical in structure and respectively comprise a permanent magnet stator support, a plurality of permanent magnet stator iron cores which are uniformly distributed along the circumference are arranged on the permanent magnet stator support, and a high-coercivity permanent magnet is arranged between every two adjacent permanent magnet stator iron cores; the armature stator comprises an armature stator support, a plurality of armature stator iron cores which are uniformly distributed along the circumference are arranged on the armature stator support, and armature windings are wound on the armature stator iron cores.
2. The stator permanent magnet type axial field permanent magnet motor according to claim 1, characterized in that: the permanent magnet stator iron core comprises a first stator yoke and first stator teeth, the first stator teeth are arranged on one side, facing the armature stator, of the first stator yoke, and the high-coercivity permanent magnets are embedded between the first stator yokes of the two adjacent permanent magnet stator iron cores and distributed along the radial direction.
3. The stator permanent magnet type axial field permanent magnet motor according to claim 1, characterized in that: the permanent magnet stator support is of an annular disc-shaped structure, a plurality of permanent magnet stator slots corresponding to the positions of the permanent magnet stator cores are formed in the permanent magnet stator support, and the permanent magnet stator cores are arranged in the permanent magnet stator slots.
4. The stator permanent magnet type axial field permanent magnet motor according to claim 1, characterized in that: the first rotor and the second rotor are identical in structure and respectively comprise a circular disc-shaped rotor support, a plurality of rotor core slots which are uniformly distributed along the circumference and extend along the radial direction are formed in the rotor supports, and a rotor core is arranged in each rotor core slot.
5. The stator permanent magnet type axial field permanent magnet motor according to claim 1, characterized in that: the armature stator core comprises a second stator yoke, second stator teeth are respectively arranged on two sides of the second stator yoke, and the second stator teeth on the two sides face the first rotor and the second rotor respectively; the armature winding adopts a concentrated winding and is wound on a second stator yoke of the armature stator core.
6. The stator permanent magnet type axial field permanent magnet motor according to claim 1, characterized in that: the armature stator support is of a circular ring disc-shaped structure, a plurality of armature stator slots corresponding to the positions of a plurality of armature stator iron cores are formed in the armature stator support, and the armature stator iron cores are arranged in the armature stator slots.
7. The stator permanent magnet type axial field permanent magnet motor according to claim 4, characterized in that: the permanent magnet stator support, the armature stator support and the rotor support are all made of non-magnetic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011595366.XA CN112688519B (en) | 2020-12-29 | 2020-12-29 | Stator permanent magnet type axial magnetic field permanent magnet motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011595366.XA CN112688519B (en) | 2020-12-29 | 2020-12-29 | Stator permanent magnet type axial magnetic field permanent magnet motor |
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| CN112688519A true CN112688519A (en) | 2021-04-20 |
| CN112688519B CN112688519B (en) | 2021-11-30 |
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| CN202011595366.XA Active CN112688519B (en) | 2020-12-29 | 2020-12-29 | Stator permanent magnet type axial magnetic field permanent magnet motor |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060028093A1 (en) * | 2004-08-03 | 2006-02-09 | Nissan Motor Company, Ltd. | Axial-gap dynamo-electric machine |
| JP2007060745A (en) * | 2005-08-22 | 2007-03-08 | Sumitomo Electric Ind Ltd | Inductor type motor and vehicle equipped with that motor |
| JP2007060749A (en) * | 2005-08-22 | 2007-03-08 | Sumitomo Electric Ind Ltd | Motor for both inductor type power generation/driving and car equipped with that motor |
| CN101088210A (en) * | 2004-12-24 | 2007-12-12 | 住友电气工业株式会社 | Induction type synchronous motor |
| CN105245073A (en) * | 2015-11-16 | 2016-01-13 | 南京理工大学 | Stator permanent-magnetic doubly salient disc-type motor |
| CN105827078A (en) * | 2016-05-12 | 2016-08-03 | 哈尔滨理工大学 | Mixed excitation axial magnetic-flux modulated-type motor with composite structure |
| CN110492708A (en) * | 2019-08-21 | 2019-11-22 | 哈尔滨工业大学（深圳） | Laminated type vernier motor |
-
2020
- 2020-12-29 CN CN202011595366.XA patent/CN112688519B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060028093A1 (en) * | 2004-08-03 | 2006-02-09 | Nissan Motor Company, Ltd. | Axial-gap dynamo-electric machine |
| CN101088210A (en) * | 2004-12-24 | 2007-12-12 | 住友电气工业株式会社 | Induction type synchronous motor |
| JP2007060745A (en) * | 2005-08-22 | 2007-03-08 | Sumitomo Electric Ind Ltd | Inductor type motor and vehicle equipped with that motor |
| JP2007060749A (en) * | 2005-08-22 | 2007-03-08 | Sumitomo Electric Ind Ltd | Motor for both inductor type power generation/driving and car equipped with that motor |
| CN105245073A (en) * | 2015-11-16 | 2016-01-13 | 南京理工大学 | Stator permanent-magnetic doubly salient disc-type motor |
| CN105827078A (en) * | 2016-05-12 | 2016-08-03 | 哈尔滨理工大学 | Mixed excitation axial magnetic-flux modulated-type motor with composite structure |
| CN110492708A (en) * | 2019-08-21 | 2019-11-22 | 哈尔滨工业大学（深圳） | Laminated type vernier motor |
Non-Patent Citations (1)
| Title |
|---|
| 周扬忠等: "永磁同步发电系统非线性内模控制", 《中国电机工程学报》 * |
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| CN112688519B (en) | 2021-11-30 |
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