CN210898663U - Stator core, stator and permanent magnet direct-drive generator - Google Patents
Stator core, stator and permanent magnet direct-drive generator Download PDFInfo
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- CN210898663U CN210898663U CN201922200377.2U CN201922200377U CN210898663U CN 210898663 U CN210898663 U CN 210898663U CN 201922200377 U CN201922200377 U CN 201922200377U CN 210898663 U CN210898663 U CN 210898663U
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Abstract
The utility model relates to a stator core, stator and permanent-magnet direct drive generator. This stator core is applied to permanent magnetism and directly drives stator of generator, and stator core sets up a plurality of towards the piece in the periphery side or the inner periphery side of the stator support of stator including range upon range of, and the piece includes towards the piece: the yoke part is an arc-shaped sheet body with a preset circle center angle; the permanent magnet direct-drive generator comprises a plurality of tooth parts, wherein the tooth parts are distributed at intervals along the circumferential direction of a yoke part and are connected with the yoke part, each tooth part is a strip-shaped body made of oriented silicon steel materials so as to reduce the loss of the permanent magnet direct-drive generator, and the tooth parts extend along the radial direction of the yoke part and are basically parallel to the rolling direction of a punching sheet so as to improve the efficiency of the permanent magnet direct-drive generator by 1% -2%. The stator core makes full use of the characteristic that the oriented silicon steel material has excellent magnetic conductivity along a single direction, the tooth parts of the multiple stamped sheets are made of the oriented silicon steel material with high magnetic induction and low loss, and the tooth parts are basically arranged in parallel to the rolling direction of the stamped sheets, so that the loss of the motor is reduced, and the efficiency of the motor is improved.
Description
Technical Field
The utility model relates to the technical field of electric machines, concretely relates to stator core, stator and permanent magnetism directly drive generator.
Background
The permanent magnet direct-drive generator has the advantages of simple structure, low failure rate, large rotational inertia, good ventilation effect and the like, and is widely applied to megawatt-level wind generating sets. The permanent magnet direct-drive generator of the wind generating set is directly driven by the blades, the rotating speed is low, and the diameter is large, for example, the diameter of the 1.5MW permanent magnet direct-drive generator reaches 4.8 m. At present, a neodymium iron boron permanent magnet is generally adopted for excitation of a direct-drive permanent magnet wind power generator, in order to save electric energy consumed by excitation, a cold-rolled non-oriented silicon steel material is mostly selected for a stator iron core, the silicon content is below 2.8%, the using amount of the silicon steel material is large, and the loss and copper loss of the stator iron core are large, so that the volume of the low-speed permanent magnet direct-drive generator is large, the manufacturing cost is high, and the efficiency of the generator is not favorably improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a stator core, stator and permanent-magnet machine, this stator core can reduce the loss of motor, improve the efficiency of motor.
On the one hand, the utility model provides a stator core is applied to permanent-magnet direct drive generator's stator, and stator core sets up a plurality of towards the piece in the periphery side or the inner periphery side of the stator support of stator including range upon range of, and wherein, every towards the piece and includes: the yoke part is an arc-shaped sheet body with a preset circle center angle; the permanent magnet direct-drive generator comprises a plurality of tooth parts, wherein the tooth parts are distributed at intervals along the circumferential direction of a yoke part and are connected with the yoke part, each tooth part is a strip-shaped body made of oriented silicon steel materials so as to reduce the loss of the permanent magnet direct-drive generator, and the tooth parts extend along the radial direction of the yoke part and are basically parallel to the rolling direction of a punching sheet so as to improve the efficiency of the permanent magnet direct-drive generator by 1% -2%.
According to an aspect of the utility model, the predetermined centre of a circle angle towards the yoke portion of piece is 10 ~ 20.
According to one aspect of the utility model, the length ratio of the tooth part of towards piece and radial length of yoke part is 6:1 ~ 8: 1.
According to one aspect of the utility model, the yoke part of the punching sheet is a sheet body made of oriented silicon steel material, and the yoke part and the plurality of tooth parts are integrally formed; or the yoke is a sheet body made of non-oriented silicon steel material, and the yoke is connected with the plurality of tooth parts in a splicing manner.
According to the utility model discloses an aspect, in a plurality of punching of range upon range of setting, adjacent punching along the setting of circumference part overlapping in the same layer, a plurality of punching of adjacent layer along the predetermined angle setting of circumference skew.
According to one aspect of the utility model, a plurality of punching sheets are arranged on the outer peripheral side of the stator bracket in a stacking manner, and a plurality of tooth parts of each punching sheet are positioned on the outer peripheral side of a yoke part; or the punching sheets are arranged on the inner peripheral side of the stator bracket in a stacked mode, and the teeth of each punching sheet are located on the inner peripheral side of the yoke portion.
On the other hand, the utility model also provides a stator is applied to permanent-magnet direct drive generator, and this stator includes: the stator support is provided with a pair of tooth pressing plates which are distributed at intervals along the axial direction along the inner peripheral side or the outer peripheral side of the stator support, and an accommodating cavity is formed between the pair of tooth pressing plates; the stator core is arranged in the accommodating cavity; and the coil winding is wound in tooth grooves between adjacent tooth parts of a plurality of punching sheets of the stator core along the axial direction of the stator support.
According to the utility model discloses an aspect, the tooth clamp plate includes the bearing part and a plurality of fixed teeth along the circumference interval distribution of bearing part, and fixed tooth aligns the setting with stator core's tooth portion.
According to the utility model discloses an aspect, the stator still includes end plate and tension screw, end plate pressfitting tooth clamp plate to connect end plate, tooth clamp plate and stator core as an organic whole through tension screw.
On the other hand, the utility model also provides a permanent-magnet direct drive generator, including the rotor and the stator of coaxial setting, the stator is as before the stator.
The utility model provides a pair of stator core, stator and permanent magnetism directly drive generator, a plurality of tooth portions towards the piece through with stator core's range upon range of setting are felt by high magnetism, the preparation of low-loss oriented silicon steel material, and tooth portion is parallel to basically in the rolling direction setting towards the piece, make full use of oriented silicon steel material along the folk prescription to having the characteristics of excellent magnetic conductivity, reduced the permanent magnetism and directly driven the loss of generator, improved the efficiency of motor.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. Wherein like or similar reference numerals refer to like or similar features.
Fig. 1 is a schematic main magnetic path of a local structure of a direct drive permanent magnet generator according to an embodiment of the present invention, taken along a direction perpendicular to an axial direction of a rotor;
FIG. 2 is a schematic partial structural view of a stator of the permanent magnet direct drive generator shown in FIG. 1;
fig. 3 is a schematic structural diagram of a punching sheet provided by an embodiment of the present invention;
FIG. 4 is a schematic partial view of the stator of FIG. 2 with the coil windings removed;
fig. 5 is a partially enlarged structural view of the region a shown in fig. 4.
Description of reference numerals:
1-punching; 11-a yoke; 111-locating holes; 12-a tooth portion;
100-a stator; 10-a stator core; 20-a stator support; 21-toothed press plate; 211-a carrier; 212-fixed teeth; 22-an end plate; 30-a coil winding;
200-a rotor; 210-a rotor support; 220-pole module.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The directional terms appearing in the following description are directions shown in the drawings and do not limit the specific structure of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.
For better understanding of the present invention, the following describes in detail a stator core, a stator and a permanent magnet direct drive generator provided by the embodiments of the present invention with reference to fig. 1 to 5.
Referring to fig. 1 and 2 together, the embodiment of the present invention provides a permanent magnet direct drive generator, which may alternatively be a general permanent magnet generator, and in an expanded sense, is a general generator not limited to permanent magnet. The generator comprises a stator 100 and a rotor 200 which are coaxially arranged, wherein the stator 100 comprises a stator core 10, a stator support 20 and a coil winding 30, and the coil winding 30 is wound in a tooth slot of the stator core 10 along the axial direction of the stator support 20. The rotor 200 includes a rotor holder 210 and a magnetic pole module 220 disposed on the rotor holder 210.
The permanent magnet direct drive generator can be in a structure of an inner stator and an outer rotor, namely the rotor 200 is arranged along the periphery of the stator 100; the permanent magnet direct drive generator can also be an inner rotor and outer stator structure, namely, the stator 100 is arranged along the periphery of the rotor 200. A predetermined air gap P is maintained in the radial direction between the pole modules 220 of the rotor 200 and the coil windings 30 of the stator 100. In the application, "radial" refers to the diameter direction of the permanent magnet direct drive generator, namely the diameter direction of the stator and the rotor, "axial" refers to the direction of the rotating shaft of the permanent magnet direct drive generator, and "circumferential" refers to the circumferential direction of the permanent magnet direct drive generator. For convenience of description, the present invention is described by taking a permanent magnet direct drive generator with an inner stator and an outer rotor structure as an example.
As shown in fig. 1, the magnetic poles N and S of the plurality of magnetic pole modules 220 of the rotor 200 are alternately arranged along the circumferential direction of the rotor holder 210, and the main magnetic path between the stator 100 and the rotor 200 is composed of the magnetic pole modules 220, the rotor holder 210, a predetermined air gap P between the stator 100 and the rotor 200 corresponding to the magnetic poles of the magnetic pole modules 220, the stator core 10, and the coil winding 30.
Because the rated rotating speed of the permanent magnet direct drive generator is low, a multi-pole multi-slot scheme is generally adopted. As shown in fig. 2, the stator core 10 includes a plurality of lamination sheets 1 stacked on an outer peripheral side of the stator frame 20, and each lamination sheet 1 includes a yoke portion 11 and a plurality of tooth portions 12. The main magnetic path is mainly a magnetic path of the radial teeth 12, and the yoke 11 has a relatively short magnetic path and a relatively long distance from the main magnetic field although it has a tangential component. According to the principle of magnetic flux continuity, the magnetic lines of force of the yoke 11 are closed from both sides, so that the magnetic flux density of the yoke 11 is approximately half of the nominal value of the magnetic flux density of the tooth 12 in most cases, and the magnetic performance of the yoke 11 has little influence on the whole main magnetic path.
In order to improve the power density of the generator under the condition of limited space and materials, the non-oriented silicon steel sheet in the prior art can be replaced by the oriented silicon steel sheet with higher magnetic induction intensity and extremely low loss to be used as the material of the stator core 10. The oriented silicon steel sheet belongs to low-silicon low-carbon silicon-iron alloy, is low in doping, and has the characteristics of small iron core loss, high magnetic induction intensity, high surface smoothness, small same plate difference, uniform thickness and the like, so that the oriented silicon steel sheet has excellent magnetic conductivity in a single direction, but the magnetic conductivity perpendicular to the direction is weaker. Because the diameter of the stator 100 is large, the tooth part 12 of each punching sheet 1 is basically in the rolling direction during manufacturing, so that the plurality of tooth parts 12 can be integrally formed by adopting an oriented silicon steel material, and because the influence of the yoke part 11 on the whole main magnetic circuit is small, the tooth parts can still be manufactured by adopting a non-oriented silicon steel material with low price, so that the purposes of improving the motor efficiency, reducing the motor volume, reducing the use of effective materials and reducing the manufacturing cost of the motor are achieved.
Referring to fig. 3, the embodiment of the utility model provides a stator core 10 is applied to permanent-magnet direct drive generator's stator 100, and stator core 10 includes that the range upon range of a plurality of towards pieces 1 that set up in periphery side or the inner periphery side of stator support 20 of stator 100, and every towards piece 1 includes: a yoke 11 and a plurality of teeth 12.
The yoke 11 is an arc-shaped sheet body with a predetermined circle center angle.
The plurality of tooth portions 12 are distributed at intervals along the circumferential direction of the yoke portion 11 and connected with the yoke portion 11, each tooth portion 12 is a strip-shaped body made of oriented silicon steel materials so as to reduce the loss of the permanent magnet direct-drive generator, and the plurality of tooth portions 12 extend along the radial direction of the yoke portion 11 and are basically parallel to the rolling direction of the punching sheet 1, so that the efficiency of the permanent magnet direct-drive generator is improved by 1% -2%.
The term "substantially parallel" as used herein means that, of the plurality of teeth 12 of the punching sheet 1, the teeth 12 located at the center of the yoke 11 are arranged parallel to the rolling direction of the punching sheet 1, and the teeth 12 located at both sides of the yoke 11 are offset by a certain angle from the teeth 12 located at the center by extending in the radial direction, the offset angle being in the range of 0 ° to 10 °.
Taking a permanent magnet direct drive generator with power of 2.5 megawatts as an example, the tooth parts 12 of the multiple punching sheets 1 of the stator core 10 are made of an oriented silicon steel material with high magnetic conductivity and low loss, and the simulation comparative analysis is performed on the oriented silicon steel material and a stator core made of a non-oriented silicon steel material in the prior art. The result shows that the iron loss of the stator core 10 made of the oriented silicon steel material is only about 20% of the iron loss of the stator core made of the non-oriented silicon steel material, and the efficiency of the generator is improved by about 1%, so that the temperature rise of the generator can be reduced, and the service life of the generator is prolonged.
The embodiment of the utility model provides a pair of stator core 10, a plurality of towards piece 1's tooth portion 12 through with range upon range of setting is felt by high magnetism, the preparation of low-loss oriented silicon steel material, and tooth portion is parallel to basically and sets up in the rolling direction towards the piece, and make full use of oriented silicon steel material has the characteristics of excellent magnetic conductivity along the folk prescription to, has reduced the permanent magnetism and has directly driven the loss of generator, has improved the efficiency of motor.
The specific structure of the stator core 10 according to the embodiment of the present invention will be described in further detail with reference to the accompanying drawings.
When the permanent magnet direct-drive generator is of an inner stator and outer rotor structure, the punching sheets 1 are arranged on the outer peripheral side of the stator support 20 in a stacked mode, and the tooth parts 12 of each punching sheet 1 are located on the outer peripheral side of the yoke part 11. When the permanent magnet direct-drive generator is of an inner rotor and outer stator structure, the punching sheets 1 are arranged on the inner peripheral side of the stator support 20 in a stacked mode, and the tooth parts 12 of each punching sheet 1 are located on the inner peripheral side of the yoke part 11.
For convenience of description, the following description will be given taking an example in which the plurality of teeth 12 of the lamination sheet 1 are located on the outer peripheral side of the yoke portion 11.
Referring again to fig. 3, as described above, the plurality of teeth 12 of the punching sheet 1 extend in the radial direction of the yoke portion 11 and are arranged substantially parallel to the rolling direction of the punching sheet 1. In order to meet the requirement of "substantial parallelism", the predetermined circle center angle of the yoke part 11 of the punching sheet 1 is optionally 10-20 °.
The plurality of tooth parts 12 are distributed at intervals along the circumferential direction of the yoke part 11, so that the tooth parts 12 at two sides of the yoke part 11 deviate from the tooth part 12 at the central position by an angle as small as possible, the characteristic that the oriented silicon steel material has excellent magnetic conductivity along a single direction is fully utilized, the loss of the permanent magnet direct drive generator is reduced, and the efficiency of the motor is improved.
Further, the length ratio of the tooth part 12 of the punching sheet 1 to the yoke part 11 in the radial direction is 6: 1-8: 1. For example, the length of the tooth portion 12 in the radial direction is 130mm, and the length of the yoke portion 11 in the radial direction is 20 mm. The yoke 11 is further provided with a positioning hole 111 along the circumferential direction, so that the multi-layer stamped sheets 1 can be stacked together along the axial direction. Due to the design of the punching sheet 1, on one hand, the tooth grooves between the adjacent tooth parts 12 of the punching sheet 1 can contain more coil windings 30, and the power density of the generator can be improved; on the other hand, the material consumption of the stator core 10 is reduced, and the manufacturing cost of the generator is further reduced.
As an alternative embodiment, the yoke 11 is a sheet made of non-oriented silicon steel material, and the yoke 11 is connected to the plurality of teeth 12 in a splicing manner. As mentioned above, since the yoke portion 11 of the punching sheet 1 has a small influence on the entire main magnetic path, it can still be made of a non-oriented silicon steel material with a low price, so that the efficiency and the manufacturing cost of the generator can be balanced.
As an alternative embodiment, the yoke portion 11 of the punching sheet 1 is a sheet made of an oriented silicon steel material, and the yoke portion 11 and the plurality of tooth portions 12 are integrally formed. The punching sheet 1 is integrally made of an oriented silicon steel material, so that the loss of the generator can be further reduced, the efficiency of the generator is improved, the manufacturing process of the stator core 10 is simplified, and the assembly efficiency of the stator core 10 is improved.
Referring to fig. 4, in the multiple lamination sheets 1 stacked in the stator core 10, adjacent lamination sheets 1 in the same layer are partially overlapped in the circumferential direction, and the multiple lamination sheets 1 in adjacent layers are offset by a predetermined angle in the circumferential direction.
For example, the assembly process of the stator core 10 is performed by stacking the laminations 1 around the peripheral side of the stator frame 20 in a set of 6 steps. Step 1, placing a first punching sheet 1; step 2, placing a second punching sheet 1 clockwise, wherein the second punching sheet 1 and the first punching sheet 1 are partially overlapped by 1/4 punching sheets along the circumferential direction; and (3) placing all the punching sheets 1 clockwise in the steps 3-6, and circumferentially and partially overlapping 1/4 punching sheets of the adjacent punching sheets 1 to complete the placing operation of the first layer. The 1 st step of the second layer is relative to the 1 st step of the first layer and is placed the first towards piece 1 along the angle of 1.5 towards pieces of clockwise skew, 2 nd ~ 6 step are placed towards piece 1 along the clockwise in proper order, accomplish the operation of placing on second layer. Similarly, the 1 st step of the third layer is relative to the 1 st step of the second layer and is placed with the first punching sheet 1 along the angle of 1.5 punching sheets deviated in the clockwise direction, and the 2 nd to 6 th steps are sequentially placed with the punching sheet 1 along the clockwise direction, so that the placing operation of the third layer is completed. And by parity of reasoning, the placing operation of the multilayer punching sheet is finally completed.
In the placing process of the multilayer punching sheets 1, the punching sheets 1 which are stacked are required to be pre-pressed, and the pre-pressing times of the punching sheets 1 can be determined according to the height of the stator core 10. When the punching sheets are pre-pressed, the positioning holes 111 of the placed multilayer punching sheets 1 are adjusted by using a shaping and punching plate, and then whether the positioning holes 111 of the stator core 10 are aligned or not and whether the ventilation slots of the stator support 20 are aligned with the tooth grooves of the punching sheets 1 or not are checked by using the through slot bars, so that heat dissipation is facilitated. When the multilayer stamped steel 1 is stacked to a preset height, a split pre-pressing tool is installed for pressure maintaining, and the pressure maintaining time is about half an hour. If the height of the stator core 10 is high, the pre-pressing is generally three times to ensure that the edge warping phenomenon does not occur on each punching sheet 1.
In addition, the plurality of punching sheets 1 can also be mutually overlapped and pressed together in a bonding mode, and the description is omitted.
Referring to fig. 5, the stator frame 20 is provided with a pair of tooth pressure plates 21 spaced apart from each other in the axial direction along the inner circumferential side or the outer circumferential side thereof, and an accommodation cavity is formed between the pair of tooth pressure plates 21, in which the stator core 10 is disposed.
Further, the tooth pressure plate 21 includes a bearing portion 211 and a plurality of fixed teeth 212 distributed at intervals in a circumferential direction of the bearing portion 211, the fixed teeth 212 being disposed in alignment with the teeth portions 12 of the stator core 10.
The stator 100 further includes an end plate 22 and a tightening screw (not shown), wherein the end plate 22 presses the bearing portion 211 of the tooth pressing plate 21, and the end plate 22, the tooth pressing plate 21 and the stator core 10 are integrally connected by the tightening screw.
After the stacked punching sheets 1 are pressed, the end plate 22 may be pressed on the bearing portion 211 of the tooth pressing plate 21, for example, the end plate 22 may be welded to the bearing portion 211 of the tooth pressing plate 21, the tightening screw may be screwed through the positioning holes of the end plate 22, the tooth pressing plate 21, and the stator core 10 by using a nut, and finally, the nut may be spot-welded to complete the assembly operation of the stator core 10.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (10)
1. The utility model provides a stator core (10), is applied to permanent-magnet direct drive generator's stator (100), stator core (10) including range upon range of set up in a plurality of towards piece (1) of periphery side or inner periphery side of stator support (20) of stator (100), its characterized in that, every towards piece (1) includes:
the yoke part (11) is an arc-shaped sheet body with a preset circle center angle;
the permanent magnet direct-drive generator comprises a plurality of tooth parts (12), the tooth parts (12) are distributed at intervals along the circumferential direction of the yoke part (11) and are connected with the yoke part (11), each tooth part (12) is a strip-shaped body made of oriented silicon steel materials so as to reduce the loss of the permanent magnet direct-drive generator, the tooth parts (12) extend along the radial direction of the yoke part (11) and are basically parallel to the rolling direction of the punching sheet (1), and therefore the efficiency of the permanent magnet direct-drive generator is improved by 1% -2%.
2. Stator core (10) according to claim 1, characterized in that the predetermined circular center angle of the yoke part (11) of the punching sheet (1) is 10-20 °.
3. The stator core (10) according to claim 1, wherein a length ratio of the tooth portion (12) to the yoke portion (11) of the punching sheet (1) in the radial direction is 6:1 to 8: 1.
4. The stator core (10) according to claim 1, wherein the yoke portion (11) of the punching sheet (1) is a sheet-shaped body made of an oriented silicon steel material, and the yoke portion (11) is integrally formed with the plurality of tooth portions (12);
or the yoke part (11) of the punching sheet (1) is a sheet body made of non-oriented silicon steel material, and the yoke part (11) is connected with the plurality of tooth parts (12) in a splicing manner.
5. The stator core (10) according to claim 1, wherein, in the plurality of lamination sheets (1) arranged in a stacked manner, adjacent lamination sheets (1) in the same layer are partially overlapped in the circumferential direction, and the plurality of lamination sheets (1) in adjacent layers are arranged in a manner of being offset by a predetermined angle in the circumferential direction.
6. The stator core (10) according to claim 1, wherein the plurality of punching sheets (1) are stacked on an outer peripheral side of the stator frame (20), and the plurality of teeth (12) of each punching sheet (1) are located on the outer peripheral side of the yoke portion (11);
or the punching sheets (1) are arranged on the inner peripheral side of the stator support (20) in a stacked mode, and the tooth parts (12) of each punching sheet (1) are located on the inner peripheral side of the yoke part (11).
7. A stator (100) for a permanent magnet direct drive generator, the stator (100) comprising:
the stator support (20) is provided with a pair of tooth pressing plates (21) which are distributed at intervals along the axial direction along the inner periphery side or the outer periphery side of the stator support, and an accommodating cavity is formed between the pair of tooth pressing plates (21);
the stator core (10) of any of claims 1 to 6 disposed in the receiving cavity;
and the coil winding (30) is wound in tooth grooves between adjacent tooth parts (12) of a plurality of punching sheets (1) of the stator core (10) along the axial direction of the stator support (20).
8. The stator (100) according to claim 7, wherein the tooth pressure plate (21) comprises a bearing portion (211) and a plurality of stationary teeth (212) distributed at intervals in a circumferential direction of the bearing portion (211), the stationary teeth (212) being arranged in alignment with the teeth (12) of the stator core (10).
9. The stator (100) according to claim 8, further comprising an end plate (22) and a tension screw, wherein the end plate (22) presses the bearing portion (211) of the tooth pressure plate (21) and connects the end plate (22), the tooth pressure plate (21) and the stator core (10) into a whole through the tension screw.
10. A permanent magnet direct drive generator, comprising a rotor and a stator arranged coaxially, the stator being a stator (100) according to any of claims 7 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922200377.2U CN210898663U (en) | 2019-12-10 | 2019-12-10 | Stator core, stator and permanent magnet direct-drive generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922200377.2U CN210898663U (en) | 2019-12-10 | 2019-12-10 | Stator core, stator and permanent magnet direct-drive generator |
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| CN210898663U true CN210898663U (en) | 2020-06-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118174473A (en) * | 2024-05-15 | 2024-06-11 | 江苏兆胜科技股份有限公司 | Stator core for semi-direct-drive wind driven generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118174473A (en) * | 2024-05-15 | 2024-06-11 | 江苏兆胜科技股份有限公司 | Stator core for semi-direct-drive wind driven generator |
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Address after: No.107 Shanghai Road, Urumqi Economic and Technological Development Zone, Urumqi City, Xinjiang Uygur Autonomous Region Patentee after: Jinfeng Technology Co.,Ltd. Address before: No.107 Shanghai Road, Urumqi Economic and Technological Development Zone, Urumqi City, Xinjiang Uygur Autonomous Region Patentee before: XINJIANG GOLDWIND SCIENCE & TECHNOLOGY Co.,Ltd. |