CN218514263U - Permanent magnet generator and semi-direct-drive permanent magnet synchronous wind generating set - Google Patents
Permanent magnet generator and semi-direct-drive permanent magnet synchronous wind generating set Download PDFInfo
- Publication number
- CN218514263U CN218514263U CN202222736246.8U CN202222736246U CN218514263U CN 218514263 U CN218514263 U CN 218514263U CN 202222736246 U CN202222736246 U CN 202222736246U CN 218514263 U CN218514263 U CN 218514263U
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- space
- magnet generator
- partition plate
- rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The application provides a permanent magnet generator and a semi-direct-drive permanent magnet synchronous wind generating set. The permanent magnet generator comprises a casing, a stator and a rotor, wherein the stator and the rotor are arranged in the casing. The stator includes stator core and installs the winding on stator core, and the rotor includes the rotor support frame and installs the magnetic pole module on the rotor support frame. Still be provided with first division board and second division board in the casing, rotor support frame is first space and second space with first division board and second division board rotatable coupling in order to separate into permanent magnet generator respectively, and first space is the enclosure space with external isolation, and the second space is the open space with external intercommunication, and wherein, stator core, winding and magnetic pole module are located first space to can eliminate the influence of wind friction to generator winding and permanent magnet temperature to the very big degree.
Description
Technical Field
The application relates to the technical field of generators, in particular to a permanent magnet generator and a semi-direct-drive permanent magnet synchronous wind generating set.
Background
The semi-direct-drive permanent magnet synchronous wind generating set is a transmission chain system consisting of a speed increasing box with a low transmission ratio and a medium-speed permanent magnet generator, and solves the problems of large size, high cost and difficult transportation of a high-power permanent magnet direct-drive wind generating set and the problems of low reliability and high operation and maintenance cost of a gear box with a high transmission ratio. The semi-direct-drive permanent magnet synchronous wind generating set gradually becomes a development trend of the wind power market in recent years by virtue of obvious advantages of the semi-direct-drive permanent magnet synchronous wind generating set in terms of volume, cost and reliability.
In order to improve the strength, a rotor support of the semi-direct drive generator is generally uniformly provided with a plurality of reinforcing ribs in the circumferential direction. The speed of rotation of the semi-direct drive generator is high, usually up to 600r/min (revolutions per minute), and at high speed of rotation, the reinforcing ribs cause violent agitation of the air inside the generator. Because air is viscous fluid, the higher rotating speed can cause the rotor to generate wind abrasion due to the action of viscous force in the rotating process, and the wind abrasion can reach 30-40 kW (kilowatt) for a generator with the rotating speed of 600 r/min. This heat can raise the temperature of the generator cooling air, adversely affecting the heat dissipation of the generator, and also causing an increase in the temperature difference between the drive and non-drive ends of the windings. In addition, wind abrasion also increases with increasing cooling air flow and rotor speed. Therefore, reducing wind abrasion is also an important direction to reduce the temperature rise of the generator.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide a permanent magnet generator and a semi-direct drive permanent magnet synchronous wind generating set, which can eliminate the influence of wind abrasion on the temperature of a generator winding and a permanent magnet to the maximum extent.
One aspect of the present application provides a permanent magnet generator. The permanent magnet generator comprises a casing, and a stator and a rotor which are arranged in the casing. The stator includes stator core and installs winding on the stator core, the rotor includes the rotor support frame and install in magnetic pole module on the rotor support frame. Still be provided with first division board and second division board in the casing, rotor support frame respectively with first division board reaches second division board rotatable coupling is in order with permanent magnet generator separates into first space and second space, first space is the enclosure space of keeping apart with the external world, the second space is the open space with external intercommunication, wherein, stator core the winding reaches the magnetic pole module is located in the first space.
Further, the permanent magnet generator further comprises a driving end cover and a non-driving end cover, the machine shell is arranged between the driving end cover and the non-driving end cover, the first partition plate is arranged on the driving end cover, and the second partition plate is arranged on the non-driving end cover.
Further, the permanent magnet generator further comprises a cooling device to cool the gaseous environment within the first space.
Further, an air inlet and an air outlet are respectively arranged on the machine shell, an air gap is formed between the stator and the rotor, and an air circulation passage is formed among the air inlet, the air gap between the stator and the rotor and the air outlet.
Further, the first partition plate and the second partition plate are both cylindrical.
Further, the rotor supporting frame comprises an annular base plate used for installing the magnetic pole module, the annular base plate comprises a first circumferential side and a second circumferential side which are opposite to each other, and the first circumferential side and the second circumferential side of the annular base plate are respectively in rotatable connection with the first partition plate and the second partition plate.
Further, a junction between the first partition plate and the first peripheral side of the annular base plate, and a junction between the second partition plate and the second peripheral side of the annular base plate are labyrinth seals; or the joint between the first partition plate and the first peripheral side of the annular base plate and the joint between the second partition plate and the second peripheral side of the annular base plate are sealed by brushes.
Further, the first and second spacers extend integrally from the drive-end cap and the non-drive-end cap, respectively; or the first partition plate and the second partition plate are respectively connected with the driving end cover and the non-driving end cover in a seamless mode.
Furthermore, the rotor support frame is in a wheel shape, and a plurality of reinforcing rib plates are uniformly arranged on the rotor support frame at intervals.
Furthermore, a plurality of ventilation openings are formed in the rotor support frame, and each ventilation opening is located between two adjacent reinforcing rib plates.
The permanent magnet generator of the embodiment of the application is through setting up first division board and second division board respectively in the casing, first division board and second division board can with rotor support frame rotatable fit, thereby separate the inner space of generator for confined first space and open second space, with stator core, important parts such as winding and magnetic pole module all are located confined first space, and arrange other parts in open second space, thereby, can overcome prior art's not enough, eliminate the influence of wind friction to generator winding and permanent magnet temperature to the very big degree.
Another aspect of the application also provides a semi-direct-drive permanent magnet synchronous wind generating set. The semi-direct-drive permanent magnet synchronous wind generating set comprises a wind wheel, the permanent magnet generator and a speed increasing box arranged between the wind wheel and the permanent magnet generator.
Drawings
FIG. 1 is a schematic cross-sectional view of a permanent magnet generator according to an embodiment of the present application;
FIG. 2 is an enlarged view of the circled portion shown in FIG. 1;
FIG. 3 is a perspective view of a rotor support frame according to an embodiment of the present application;
FIG. 4 is a front view of the rotor support frame shown in FIG. 3;
fig. 5 is a schematic view of the fluid flow paths of the first and second spaces of a permanent magnet generator according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front," "back," "lower," and/or "upper," and the like are for convenience of description, and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
One embodiment of the present application provides a permanent magnet generator 100. Fig. 1 discloses a schematic cross-sectional view of a permanent magnet generator 100 according to an embodiment of the present application. As shown in fig. 1, a permanent magnet generator 100 according to an embodiment of the present application includes a casing 30, and a stator and a rotor disposed in the casing 30. The stator includes a stator core 41 and a winding 42 mounted on the stator core 41, and is fixed in the housing 30. The rotor is fixed to a rotating shaft (not shown) and can rotate together with the rotating shaft. The rotor includes a rotor support frame 51 and a magnetic pole module 52 mounted on the rotor support frame 51.
A first partition plate 11 and a second partition plate 21 are also provided in the cabinet. Rotor support frame 51 is rotatably coupled to first partition plate 11 and second partition plate 21, respectively, to partition permanent magnet generator 100 into first space 104 and second space 105. The first space 104 is a closed space isolated from the outside, and the second space 105 is an open space communicating with the outside. The stator core 41, the winding 42 and the magnetic pole module 52 are located in the first closed space 104.
In some embodiments, first separator plate 11 and second separator plate 21 are both cylindrical. In some embodiments, a first spacer plate 11 extends integrally from the inner side of the drive end cap 10 and a second spacer plate 21 extends integrally from the inner side of the non-drive end cap 20. In other embodiments, first divider plate 11 may be seamlessly joined to drive end cap 10 and second divider plate 21 seamlessly joined to non-drive end cap 20.
Fig. 3 and 4 disclose illustrations of a rotor support frame 51 according to an embodiment of the present application, wherein fig. 3 discloses a perspective view of the rotor support frame 51; fig. 4 discloses a front view of the rotor support frame 51 shown in fig. 3. As shown in fig. 3 and 4, the rotor support frame 51 includes an annular support plate 511 and an annular base plate 512 for mounting the magnetic pole module 52. The ring base 512 has a cylindrical shape, and the magnetic pole module 52 is mounted on the outer cylindrical surface of the ring base 512. The annular base plate 512 is sleeved and welded on the outer circumference of the annular support plate 511, and the rotating shaft is welded on the inner circumference of the annular support plate 511. The cylindrical ring-shaped base plate 512 includes a first peripheral side 5121 and a second peripheral side 5122 opposite to each other, and the first peripheral side 5121 and the second peripheral side 5122 of the ring-shaped base plate 512 are rotatably connected to the first partition plate 11 and the second partition plate 21, respectively.
Fig. 2 discloses an enlarged view of the circled portion shown in fig. 1. As shown in fig. 2, in some embodiments, the junction between the first partition plate 11 and the first peripheral side 5121 of the ring base plate 512, and the junction between the second partition plate 21 and the second peripheral side 5122 of the ring base plate 512 may be labyrinth seals. In other embodiments, the connection between the first partition plate 11 and the first peripheral side 5121 of the annular base plate 512, and the connection between the second partition plate 21 and the second peripheral side 5122 of the annular base plate 512 may be brush seals. The labyrinth seal or the brush seal prevents foreign matter from intruding into the enclosed first space 104 and eroding the important parts such as the generator winding 42 and the pole module 52.
In some embodiments, the rotor support frame 51 is a wheel type, and a plurality of reinforcing ribs 513 are uniformly spaced on the rotor support frame 51. A plurality of reinforcing rib plates 513 are positioned at opposite sides of the annular support plate 511, and the reinforcing rib plates 513 are perpendicular to the annular support plate 511, so that the strength of the rotor can be secured.
In some embodiments, a plurality of ventilation openings 514 are further formed in the annular support plate 511 of the rotor support frame 51, and each ventilation opening 514 is located between two adjacent reinforcing rib plates 513.
Fig. 5 shows a schematic fluid flow path of the first space 104 and the second space 105 of the permanent magnet generator 100 according to an embodiment of the present application. As shown in fig. 5, the permanent magnet generator 100 of the embodiment of the present application is in the form of a housing 30 with water cooling combined with forced air, and the permanent magnet generator 100 of the embodiment of the present application may further include a cooling device, such as an air-water cooler 70, which may be used to cool the gas environment in the first space 104. A cooling water flow passage (not shown) is provided in the casing 30, and forced ventilation is employed inside the permanent magnet generator 100. An air inlet 101 and an air outlet 102 are respectively arranged on the casing 30, and an air gap 103 is arranged between the stator and the rotor, wherein, as shown by solid arrows in fig. 5, an air circulation passage is formed among the air inlet 101, the air gap 103 between the stator and the rotor, and the air outlet 102. The air circulation path is located in the closed first space 104, forming a closed loop. In the closed cycle, the cooling air from the air-water cooler 70 flows in from the air inlet 101 at the driving end of the permanent magnet generator 100, passes through the air gap 103 between the stator and the rotor, flows out from the air outlet 102 at the non-driving end, enters the air-water cooler 70, and enters the air inlet 101 at the driving end of the generator again after the temperature of the air-water cooler 70 is reduced, so that the heat of the stator and the rotor is taken away.
After the inner space of the permanent magnet generator 100 of the embodiment of the present application is partitioned, the shape structure of the enclosed first space 104 can be more regular, and the air flow path is simpler, thereby being beneficial to reducing the pressure drop of the air in the circulation.
The open second space 105 is directly connected to the external environment, and the ambient air can freely pass through the ventilation openings 514 on the annular support plate 511 of the rotor support frame 51, so that the wind abrasion generated at the reinforcing rib plate 513 rotating at a high speed can be taken away.
The permanent magnet generator 100 of the embodiment of the application has the separation effect of the cylindrical first separation plate 11 and the cylindrical second separation plate 21 of the driving end cover 10 and the non-driving end cover 20, so that wind abrasion caused by the rotor support frame 51 and the reinforcing rib plate 513 can be distributed in the open second space 105 only, and can be directly emitted to the external environment, and cannot enter the closed first space 104 to cause the temperature rise of cooling air in a closed cycle, and the heat dissipation of the generator is facilitated.
The application further provides a semi-direct-drive permanent magnet synchronous wind generating set. The semi-direct-drive permanent magnet synchronous wind generating set comprises a wind wheel, the permanent magnet generator 100 and a speed increasing box arranged between the wind wheel and the permanent magnet generator 100.
The permanent magnet generator 100 and the semi-direct-drive permanent magnet synchronous wind generating set with the permanent magnet generator 100 can overcome the defects of the prior art, and influence of wind abrasion on the temperature of the generator winding 42 and the permanent magnet is eliminated to the greatest extent. Meanwhile, the air path can be optimized, the pressure drop of air in the loop is reduced, and the type selection of the cooling fan is facilitated.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (11)
1. A permanent magnet generator, characterized by: including the casing and set up in stator and rotor in the casing, the stator includes stator core and installs winding on the stator core, the rotor includes the rotor support frame and install in magnetic pole module on the rotor support frame, still be provided with first division board and second division board in the casing, the rotor support frame respectively with first division board reaches second division board rotatable coupling, in order with permanent magnet generator separates into first space and second space, the enclosure space of first space for keeping apart with the external world, the second space is the open space with external intercommunication, wherein, stator core the winding reaches the magnetic pole module is located in the first space.
2. The permanent magnet generator of claim 1 wherein: the drive end cover is arranged on the shell, the non-drive end cover is arranged on the shell, the first partition plate is arranged on the drive end cover, and the second partition plate is arranged on the non-drive end cover.
3. The permanent magnet generator of claim 1 wherein: further comprising cooling means to cool the gaseous environment within said first space.
4. The permanent magnet generator of claim 2 wherein: an air inlet and an air outlet are respectively arranged on the shell, an air gap is arranged between the stator and the rotor, and an air circulation passage is formed among the air inlet, the air gap between the stator and the rotor and the air outlet.
5. The permanent magnet generator of claim 2 wherein: the first partition plate and the second partition plate are both cylindrical.
6. The permanent magnet generator of claim 5 wherein: the rotor supporting frame comprises an annular base plate used for installing the magnetic pole module, the annular base plate comprises a first peripheral side and a second peripheral side which are oppositely arranged, and the first peripheral side and the second peripheral side of the annular base plate are respectively connected with the first partition plate and the second partition plate in a rotatable mode.
7. The permanent magnet generator of claim 6 wherein: a junction between the first partition plate and the first peripheral side of the annular base plate, and a junction between the second partition plate and the second peripheral side of the annular base plate are labyrinth seals; alternatively, the first and second liquid crystal display panels may be,
the joint between the first partition plate and the first peripheral side of the annular base plate and the joint between the second partition plate and the second peripheral side of the annular base plate are sealed with brushes.
8. The permanent magnet generator of claim 2 wherein: the first partition plate and the second partition plate respectively extend integrally from the drive-end cap and the non-drive-end cap; alternatively, the first and second liquid crystal display panels may be,
the first partition plate and the second partition plate are respectively connected with the driving end cover and the non-driving end cover in a seamless mode.
9. The permanent magnet generator of claim 6 wherein: the rotor support frame is in a wheel shape, and a plurality of reinforcing rib plates are uniformly arranged on the rotor support frame at intervals.
10. The permanent magnet generator of claim 9 wherein: and a plurality of ventilation openings are formed in the rotor support frame, and each ventilation opening is positioned between two adjacent reinforcing rib plates.
11. A semi-direct-drive permanent magnet synchronous wind generating set is characterized in that: comprising a wind wheel, a permanent magnet generator according to any of claims 1-10, and a gearbox arranged between the wind wheel and the permanent magnet generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222736246.8U CN218514263U (en) | 2022-10-17 | 2022-10-17 | Permanent magnet generator and semi-direct-drive permanent magnet synchronous wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222736246.8U CN218514263U (en) | 2022-10-17 | 2022-10-17 | Permanent magnet generator and semi-direct-drive permanent magnet synchronous wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218514263U true CN218514263U (en) | 2023-02-21 |
Family
ID=85217112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222736246.8U Active CN218514263U (en) | 2022-10-17 | 2022-10-17 | Permanent magnet generator and semi-direct-drive permanent magnet synchronous wind generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218514263U (en) |
-
2022
- 2022-10-17 CN CN202222736246.8U patent/CN218514263U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6158607B2 (en) | motor | |
| CN103636103A (en) | Rotating electrical machine | |
| CN213717784U (en) | Cooling system of two-stage air suspension centrifugal permanent magnet motor direct-drive air compressor | |
| CN102130540B (en) | Ventilating heat-radiation structure of direct-drive permanent-magnet wind-driven generator | |
| WO2020220836A1 (en) | Cooling device, motor and wind turbine generator set | |
| JP2014033584A (en) | Wind cooling structure of rotary electric machine | |
| AU2011213437A1 (en) | A radiation structure used for vertical axis disc-type external-rotor electric machine | |
| CN210927353U (en) | Low-vibration low-noise vertical motor | |
| CN218514263U (en) | Permanent magnet generator and semi-direct-drive permanent magnet synchronous wind generating set | |
| US8786147B2 (en) | Totally-enclosed horizontal rotating electric machine | |
| CN102104297A (en) | Internal circulation oil-cooled permanent-magnet direct-current motor | |
| WO2020220834A1 (en) | Cooling system, motor, and wind turbine generating set | |
| CN210898689U (en) | Coreless high overload disc type motor | |
| CN210927355U (en) | Driving motor with heat radiation structure and convenient to maintain | |
| KR20130021612A (en) | Large size induction motor with ventilation and cooling fan | |
| CN215344183U (en) | Stable efficient YE4 type three-phase asynchronous motor of winding heat dissipation | |
| CN115912728A (en) | High-efficiency synchronous motor | |
| CN102207096B (en) | Radiating fan | |
| CN201536279U (en) | Direct current motor | |
| WO2020220835A1 (en) | Cooling system, motor and wind turbine generator set | |
| CN201705690U (en) | Cooling fan | |
| CN102324796B (en) | Liquid-cooled radiating external rotor motor | |
| CN201818770U (en) | Cooling structure of differential mechanism | |
| CN216642342U (en) | Cooling system of wind generating set and generating set | |
| CN219999182U (en) | Outer rotor low-speed high-torque permanent magnet motor with water cooling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |