CN111697716A - Stator punching sheet, stator core thereof and double-fed wind driven generator - Google Patents
Stator punching sheet, stator core thereof and double-fed wind driven generator Download PDFInfo
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- CN111697716A CN111697716A CN202010534662.2A CN202010534662A CN111697716A CN 111697716 A CN111697716 A CN 111697716A CN 202010534662 A CN202010534662 A CN 202010534662A CN 111697716 A CN111697716 A CN 111697716A
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- stator
- stator core
- heat dissipation
- fed wind
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention belongs to the technical field of generators, and relates to a stator punching sheet, a stator core of the stator punching sheet and a double-fed wind driven generator. This stator punching includes the body, and adjacent on the body is provided with interior circle portion and excircle portion, wherein: the inner circle part is provided with coil slots at intervals, and the coil slots are used for embedding coils; the excircle part interval sets up the heat dissipation tooth, and the heat dissipation tooth is used for increasing the heat radiating area of stator punching. On the other hand, the stator core formed by the stator punching sheet through the laminating process greatly improves the heat dissipation capacity of the formed stator core compared with the stator punching sheet with the same size and the same excircle and without heat dissipation teeth. In addition, the double-fed wind driven generator provided by the invention can improve the heat dissipation efficiency of the formed stator, and also solves the problems that the length of the motor in the axial direction is increased and more internal space of a cabin is occupied due to the existence of the radial ventilation slots in the prior art.
Description
Technical Field
The invention belongs to the technical field of generators, and particularly relates to a stator punching sheet, a stator core of the stator punching sheet and a double-fed wind driven generator.
Background
As shown in fig. 1, a stator core of an existing air direct-cooling doubly-fed wind generator is generally formed by fixing a punching sheet c into a core through a connecting plate a on a side surface and pressing plates b at two ends. The stator punching sheets c are divided into one grade according to the fixed quantity, and a radial ventilation groove plate d perpendicular to the end face of the stator punching sheet is arranged between every two grades. The air path design is usually as follows: the cooler inputs cold air from two ends of the iron core, enters the iron core, and is discharged upwards to the cooler along the radial ventilation slot plates of each gear and finally discharged out of the motor. The prior art mainly has the following defects: firstly, the heat dissipation efficiency of the stator is low, the structure mainly takes away the axial heat of the stator core, the radial ventilation slot plates d discharge the heat, and the radial ventilation slot plates are arranged, so that the length of the motor in the axial direction is increased due to the existence of the ventilation slots, and more internal space of a cabin can be occupied; secondly, the length of the linear part of the coil is increased, the copper consumption and the corresponding insulating materials are increased, and the manufacturing cost of the product is improved; and thirdly, protective paint is coated on the surface of the radial ventilation slotted plate d, but the radial ventilation slotted plate d has the hidden danger of paint falling, even rusting and slag falling along with the passage of time, and the normal operation of the motor can be seriously influenced.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a stator punching sheet, a stator core and a double-fed wind driven generator, so that the technical problem of low heat dissipation efficiency of the stator core in the prior art is solved.
In order to achieve the purpose, the invention provides the following technical scheme:
on one hand, the invention provides a stator punching sheet for a double-fed wind driven generator, which comprises a body, wherein an inner circle part and an outer circle part are adjacently arranged on the body, wherein:
the inner circle part is provided with coil slots at intervals, and the coil slots are used for embedding coils;
the excircle part interval sets up the heat dissipation tooth, the heat dissipation tooth is used for increasing the heat radiating area of stator punching.
In a preferred or alternative embodiment, the tips of the heat dissipating teeth are at an acute angle.
On the other hand, the invention provides a stator core, which comprises the above part or all of the stator punching sheets.
In a preferred or optional embodiment, plate slots are arranged at intervals at the outer circle part of the stator core formed by the plurality of stator punching sheets, and the diameter of a circle where the plate slots are located is smaller than that of a circle where the tooth tips of the heat dissipation teeth are located.
In another aspect, the present invention further provides a doubly-fed wind generator, including the stator core as described above, and further including a connecting plate and a pressing plate, wherein:
the stator punching sheets are pressed into a stator core by a pressing plate;
the connecting plate is installed on the plate groove and can fix a plurality of stator punching sheets.
In a preferred or alternative embodiment, the connecting plate is arranged in a structure of a diagonal plate or an arc plate, and plate grooves formed by the plurality of stator punching sheets are matched with the shape of the connecting plate.
In a preferred or alternative embodiment, the doubly-fed wind generator comprises a housing cylinder, a rotor core, a stator core mounted in the housing cylinder, and a rotor core mounted in the stator core, wherein:
the double-fed wind driven generator is provided with a first air path and/or a second air path, the first air path is arranged between the base cylinder and the stator core, and the second air path is arranged between the rotor core and the stator core.
In a preferred or alternative embodiment, the stator core is provided with ventilation holes spaced in the axial direction for heat dissipation.
In a preferred or optional embodiment, the air inlet of the first air path and/or the second air path is provided in a throat structure.
In a preferred or optional embodiment, the air inlet of the first air duct and/or the second air duct is arranged in a flared structure.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
through the heat dissipation tooth that excircle portion interval set up on the body for increase the heat radiating area of stator punching, can make stator core in addition radially dispel the heat, improved the heat dissipation capacity of stator punching.
On the other hand, the invention also provides a stator core which is formed by laminating stator punching sheets, compared with the stator punching sheets with the same size and without radiating teeth on the excircle, the radiating capacity of the formed stator core is greatly improved, and the radiating efficiency in the axial direction is far lower than that in the radial direction; meanwhile, the stator core provided by the application can reduce the occupancy rate of space.
In addition, the invention also provides a double-fed wind driven generator, the stator core is used, for example, the stator core is formed by laminating, compared with the stator punching sheet without the heat dissipation teeth on the excircle with the same size, the heat dissipation efficiency of the formed stator can be improved, the problems that the length of the motor in the axial direction is increased and more internal space of an engine room is occupied due to the existence of the radial ventilation groove in the prior art are solved, the use amount of copper and the use amount of corresponding insulating materials are reduced, and the manufacturing cost of the product is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art product of the present invention;
FIG. 2 is a schematic structural diagram of a stator lamination of the present invention;
FIG. 3 is a schematic cross-sectional structure view of a stator lamination of the present invention;
FIG. 4 is an exploded view of a stator core mounting structure of a doubly-fed wind generator according to the present invention;
FIG. 5 is a cross-sectional view of a stator core of the doubly-fed wind generator of the present invention;
FIG. 6 is a schematic structural diagram of a stator core bell mouth of a doubly-fed wind generator according to the present invention;
fig. 7 is a heat dissipation schematic diagram of the stator core of the doubly-fed wind generator of the present invention and the stator core of the prior art.
Wherein: 1. a body; 2. pressing a plate; 3. a connecting plate; 4. a base cylinder; 5. a stator core; 6. A rotor core; 7. a first air passage; 8. a second air passage; 11. a coil slot; 12. a heat dissipating tooth; 13. A plate groove; 15. a main shaft; 16 vent holes.
Detailed Description
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the invention, and not a comprehensive embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any creative effort, shall fall within the protection scope of the present invention.
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 2, a plurality of stator punching sheets are used for forming a stator core 5 through a laminating process, and the stator core is used for a double-fed wind driven generator, as shown in fig. 3, the stator core comprises a body 1, an inner circle part and an outer circle part are adjacently arranged on the body 1, wherein:
the inner circle part is provided with coil slots 11 at intervals, and the coil slots 11 are used for embedding coils;
excircle portion interval sets up heat dissipation tooth 12, and heat dissipation tooth 12 is used for changing stator core's radiating mode (radial heat dissipation), compares with prior art, if do not have the stator punching of heat dissipation tooth with the same excircle of size and compare, improves the heat dissipation capacity of shaping stator core greatly, has also overcome among the prior art because of the existence of radial ventilation groove leads to motor axial direction length to increase, occupies more cabin inner space's problem.
The heat dissipation principle is as follows: as shown in fig. 7, the left drawing is a heat dissipation path diagram of the present application, and the right drawing is a heat dissipation path diagram of the prior art, the heat dissipation principle of the present application is that cooler cold air takes away radial heat of the stator core, for example, an air path is opened between the stator core 5 and the base cylinder 4, and the heat on the surface of the stator core 5 is radially dissipated and discharged through the air path. The stator iron core 5 radiates heat outwards, the heat transfer direction in the iron core radiates heat outwards along the radial direction, and the cold air of the axial air path is contacted with the excircle to take away heat so as to realize cooling;
the prior art adopts a radial ventilation slot heat dissipation scheme, air enters from two sides and is discharged upwards along the radial ventilation slot, each iron core dissipates heat to two sides of the iron core in the axial direction of the iron core, and cold air is in contact with the radial ventilation slot to exchange heat to complete a cooling heat dissipation mode; the analysis was as follows:
1. compared with the ventilation mode, in the technical scheme provided by the invention, the cooler cold air passes through, for example, an air path is arranged between the stator core 5 and the base cylinder 4, the radial heat is taken away through the air path, and no air circulation resistance exists;
2. under the same condition, the density of cold air is higher than that of hot air, the scheme of the invention takes away radial heat axially, the cold air is more fully contacted with the hot air, and the wind path is not blocked by wind power, the wind speed is more stable, and the taken away heat is more, thereby improving the heat dissipation efficiency;
3. as is well known in the art, the introduction of the thermal conductivity (M × C)/W has a thermal conductivity of 42.5 along the layering direction and a thermal conductivity of 0.57 to 0.62 perpendicular to the layering direction, which are different from each other, and it is noted that: the structure of the invention is arranged along the layering direction (same-direction heat dissipation-radial heat dissipation axial discharge), and the scheme of the prior art is perpendicular to the layering direction (arrangement of a ventilation slot heat dissipation structure);
therefore, the heat dissipation efficiency of the stator core in the technical scheme is far higher than that of the stator core in the prior art.
As an optional embodiment, the tooth tips of the heat dissipation teeth 12 are arranged at an acute angle, the heat dissipation teeth 12 are arranged back to the center of the body 1, and the tooth-shaped structure can further improve the heat dissipation capacity of the molded stator core.
In one aspect, the invention provides a stator core using the stator punching sheet. The stator core structure can meet the use requirements after the simulation analysis and calculation of rigidity, strength and a heat flow field. Compared with the conventional iron core with the radial ventilation slots, the iron core provided by the invention has the advantages that the radial ventilation slots are omitted, the axial cooling air path is optimized, the axial length is shortened, the cost is reduced, and the reliability is improved; compared with the existing stator core with the same size and the same excircle without radiating teeth, the radiating area is increased by 1.44 times, and the radiating efficiency of the formed stator is greatly improved.
Further, plate grooves 13 are formed in the outer circle portion of the stator core formed by the plurality of stator punching sheets at intervals, and the diameter of the circle where the plate grooves 13 are located is smaller than that of the circle where the tooth tips of the heat dissipation teeth 12 are located.
On the other hand, the invention also provides a doubly-fed wind generator, as shown in fig. 4, which comprises the above stator punching sheets. This structure sets up the heat radiating area increase, has overcome among the prior art because of the existence of radial ventilation groove leads to motor axial direction length to increase, occupies more cabin inner space's problem.
As an optional embodiment, the device further comprises a pressing plate 2 and a connecting plate 3, wherein: the stator punching sheets are pressed into a stator core 5 by the pressing plate 2;
as shown in fig. 3, the plate grooves 13 are arranged at intervals on the outer circle part, the diameter of the circle where the plate grooves 13 are located is smaller than that of the circle where the tooth tips of the hot teeth are located, the diameter of the circle and the tooth roots of the heat dissipation teeth 12 are located on the same circumference, and the connecting plate 3 is installed on the plate grooves and can fix stamped sheets formed by laminating a plurality of stators. For example, the stator punching sheets are sequentially laminated, after the two ends of the stator punching sheets are tightly pressed by the pressing plates 2, the outer circumferential direction of the stator punching sheets is sequentially welded and fixed by the connecting plates 3 (the connecting plates 3 are arranged in the plate grooves 13) along the axial direction to form the stator core. Plate slot 13 is preferred, adopts chute or arc design, and stator core 5 excircle heat dissipation tooth correspondingly also follows the angle of a groove in the circumferencial direction to one side for 5 excircle heat dissipation tooth axial molding of stator core becomes around cylindrical circular arc by the straight line, compares sharp molding and can increase heat radiating area, can prefer the performance of generator moreover, improves the interference killing feature.
As an alternative embodiment, the connecting plate 3 is arranged in a structure of a diagonal plate or an arc plate, and plate grooves 13 formed by a plurality of stator punching sheets are matched with the shape of the connecting plate 3.
As an alternative embodiment, as shown in fig. 4, the generator includes a base cylinder 4 and a rotor core 6, a stator core 5 is installed in the base cylinder 4, and the rotor core 6 is installed in the stator core 5 (connected by a bearing), wherein:
in order to further increase the heat dissipation, as shown in fig. 5, the doubly-fed wind turbine is provided with a first air path 7 and/or a second air path 8, the first air path 7 is disposed between the base cylinder 4 and the stator core 5, and the second air path 8 is disposed between the rotor core 6 and the stator core 5. The effect that the wind path set up is, provides the passageway of cold air circulation, the heat dissipation of doing benefit to, wherein:
the first air passage 7 is provided to radiate heat from the outer circumferential portion of the stator core 5, and for example, cool air input from a cooler can pass through the first air passage 7 to radiate heat from the outer circumferential portion of the stator core 5 and be discharged from the base cylinder 4;
the second air passage 8 is provided to radiate heat from the inner circumferential portion of the stator core 5 and the rotor core 6, and for example, cool air input from a cooler can pass through the second air passage 8 to radiate heat from the inner circumferential portion of the stator core 5 and the rotor core 6 and be discharged from the base cylinder 4.
In the above scheme, in order to improve the heat dissipation capacity of the rotor core 6, the axial direction of the rotor core 6 is provided with the vent holes 14 at intervals, and cold air input by the cooler can cool the rotor core 6 through the vent holes 16.
As an alternative embodiment, as shown in fig. 6, the air inlet of the first air passage 7 and/or the second air passage 8 is provided with a reduced opening structure. The reducing structure is arranged to increase the intake of the cold air input by the cooler, and improve the heat dissipation effect, for example, the air inlets of the first air path 7 and/or the second air path 8 are arranged in a bell mouth structure, so that the intake is increased, the circulation speed of the cold air is ensured, and the heat dissipation effect is improved.
As an optional embodiment, the mounting of the base cylinder 4 adopts a general mounting manner of a double-fed generator in the prior art, the base cylinder 4, the stator core 5, the rotor core 6 and the spindle generator include a box body and a spindle 15 arranged in a coaxial structure, the stator core 5 and the rotor core 6 are mounted by connecting the box body, the base, an end cover and other components, and details of the existing part are not repeated herein.
The method provided by the present invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the invention without departing from the inventive concept, and those improvements and modifications also fall within the scope of the claims of the invention.
Claims (10)
1. A stator punching sheet is used for a double-fed wind driven generator and is characterized by comprising a body (1), wherein an inner circle part and an outer circle part are adjacently arranged on the body (1); the inner circle part is provided with coil slots (11) at intervals, and the coil slots (11) are used for embedding coils; the outer circle portion is provided with heat dissipation teeth (12) at intervals, and the heat dissipation teeth (12) are used for increasing the heat dissipation area of the stator punching sheet.
2. The stator punching sheet according to claim 1, characterized in that the tooth tips of the heat dissipation teeth (12) are acute-angled.
3. A stator core comprising the stator lamination as recited in claim 1 or 2.
4. The stator core according to claim 3, wherein the outer circle part of the stator core formed by the plurality of stator punching sheets is provided with plate grooves (13) at intervals, and the diameter of the circle where the plate grooves (13) are located is smaller than that of the circle where the tooth tops of the heat dissipation teeth (12) are located.
5. A doubly-fed wind generator comprising the stator core (5) as claimed in claim 4, further comprising a connecting plate (3) and a pressing plate (2), wherein a plurality of stator laminations are pressed into the stator core (5) through the pressing plate (2); the connecting plate (3) is arranged on the plate groove (13) and used for fixing the stator punching sheets.
6. The doubly-fed wind generator of claim 5, characterized in that the connection plate (3) is arranged in a structure of a diagonal plate or a radial plate, and plate slots (13) formed by the plurality of stator laminations are matched with the shape of the connection plate (3).
7. The doubly-fed wind generator of claim 6, comprising a base cylinder (4) and a rotor core (6), wherein a stator core (5) is mounted in the base cylinder (4), and a rotor core (6) is mounted in the stator core (5); the double-fed wind driven generator is provided with a first air path (7) and/or a second air path (8), the first air path (7) is arranged between the base cylinder (4) and the stator core (5), and the second air path (8) is arranged between the rotor core (6) and the stator core (5).
8. A doubly-fed wind generator as claimed in claim 7, characterised in that said stator core (5) is provided with ventilation holes (16) spaced along the axial direction for heat dissipation.
9. The doubly-fed wind generator of claim 7, characterized in that the air intakes of the first duct (7) and/or the second duct (8) are arranged in a throat configuration.
10. The doubly-fed wind generator of claim 7, characterized in that the air intakes of the first air duct (7) and/or the second air duct (8) are arranged in a bell mouth configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010534662.2A CN111697716A (en) | 2020-06-12 | 2020-06-12 | Stator punching sheet, stator core thereof and double-fed wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010534662.2A CN111697716A (en) | 2020-06-12 | 2020-06-12 | Stator punching sheet, stator core thereof and double-fed wind driven generator |
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| Publication Number | Publication Date |
|---|---|
| CN111697716A true CN111697716A (en) | 2020-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010534662.2A Pending CN111697716A (en) | 2020-06-12 | 2020-06-12 | Stator punching sheet, stator core thereof and double-fed wind driven generator |
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| CN (1) | CN111697716A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114825835A (en) * | 2022-05-20 | 2022-07-29 | 江苏嘉轩智能工业科技股份有限公司 | Mining explosion-proof three-phase permanent magnet synchronous roller |
| CN116207916A (en) * | 2023-04-27 | 2023-06-02 | 北京金风科创风电设备有限公司 | Power generation system and wind generating set |
| WO2023169063A1 (en) * | 2022-05-20 | 2023-09-14 | 江苏嘉轩智能工业科技股份有限公司 | Outer rotor permanent magnet roller stator and stator assembly thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521427A (en) * | 2008-11-15 | 2009-09-02 | 永济新时速电机电器有限责任公司 | Self-ventilation pulling motor |
| CN105048662A (en) * | 2014-04-17 | 2015-11-11 | 西门子公司 | Cooling of an electric machine |
| CN106300778A (en) * | 2016-08-02 | 2017-01-04 | 天津飞旋科技研发有限公司 | The pure air-cooled heat dissipation structure of magnetic suspension motor of impeller one |
| CN208825953U (en) * | 2018-08-25 | 2019-05-07 | 中船重工电机科技股份有限公司 | Outer circle is provided with the stator processing tooling of radiating ribs |
| CN110138143A (en) * | 2019-05-10 | 2019-08-16 | 康富科技股份有限公司 | A kind of generator with radiating ribs |
-
2020
- 2020-06-12 CN CN202010534662.2A patent/CN111697716A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521427A (en) * | 2008-11-15 | 2009-09-02 | 永济新时速电机电器有限责任公司 | Self-ventilation pulling motor |
| CN105048662A (en) * | 2014-04-17 | 2015-11-11 | 西门子公司 | Cooling of an electric machine |
| CN106300778A (en) * | 2016-08-02 | 2017-01-04 | 天津飞旋科技研发有限公司 | The pure air-cooled heat dissipation structure of magnetic suspension motor of impeller one |
| CN208825953U (en) * | 2018-08-25 | 2019-05-07 | 中船重工电机科技股份有限公司 | Outer circle is provided with the stator processing tooling of radiating ribs |
| CN110138143A (en) * | 2019-05-10 | 2019-08-16 | 康富科技股份有限公司 | A kind of generator with radiating ribs |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114825835A (en) * | 2022-05-20 | 2022-07-29 | 江苏嘉轩智能工业科技股份有限公司 | Mining explosion-proof three-phase permanent magnet synchronous roller |
| WO2023169063A1 (en) * | 2022-05-20 | 2023-09-14 | 江苏嘉轩智能工业科技股份有限公司 | Outer rotor permanent magnet roller stator and stator assembly thereof |
| CN114825835B (en) * | 2022-05-20 | 2024-10-11 | 江苏嘉轩智能工业科技股份有限公司 | Explosion-proof three-phase permanent magnet synchronous drum for mine |
| CN116207916A (en) * | 2023-04-27 | 2023-06-02 | 北京金风科创风电设备有限公司 | Power generation system and wind generating set |
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Application publication date: 20200922 |
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