WO2013170883A1 - Stator for electric machine - Google Patents
Stator for electric machine Download PDFInfo
- Publication number
- WO2013170883A1 WO2013170883A1 PCT/EP2012/059006 EP2012059006W WO2013170883A1 WO 2013170883 A1 WO2013170883 A1 WO 2013170883A1 EP 2012059006 W EP2012059006 W EP 2012059006W WO 2013170883 A1 WO2013170883 A1 WO 2013170883A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stator
- shape
- plates
- conduits
- plate
- Prior art date
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Classifications
-
- 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
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
Definitions
- the invention relates to a stator for an electric machine, the stator being meant to co-operate with a rotating rotor placed co-axially into its core channel, where an annular air gap is formed between the stator and the rotor, and the stator being formed of a plurality of stator plates fastened together in an axial direction, which plates in turn form radially extending teeth and slots between them for a stator winding on the inner circumference side of the stator and a stator back on the outer circumference side of the stator in an area between the outer circumference and a circumference defined by the bottoms of the slots, a plural number of venting conduits leading from the teeth on the inner circumference of the stator to the outer circumference thereof being formed through the stator.
- the electric machine in question is typically an electric motor, although a generator might also be concerned.
- a commonly applied cooling solution in machines of this type is a stator consisting of two or more parts, with air ducts being formed between the stator parts to lead air therein from the stator air gap.
- Problems relating to this conventional solution arise from its complex structure and problems of manufacture. To make a stator of two or more parts sufficiently strong to be pressed against a frame is problematic.
- dynamic pressure is lost into the air ducts when an air gap is crossed.
- US Patent 31 16429 discloses a prior art solution in which a plural number of air ducts are formed at regular intervals along the stator length.
- the stator in question is thus a stator having a plurality of parts.
- the ducts in question are formed by means of straight duct supports installed radially between the stator stacks to allow air to flow in conduits formed by the duct supports and the stator stack sides facing them. Since air coming from the radial rotor ducts is in a strong circumferential motion, the straight duct supports force the air to turn from this almost circumferential motion to a radial motion on a very short distance equal to the length of the air gap. This turn causes a strong single resistance and thereby loss of dynamic pressure and, in addition, an unevenly distributed flow field in the stator.
- US Patent 6498408 discloses a stator air duct solution in which the duct supports have a wavelike or a zigzag shape to increase turbulence in the air ducts. Also the cross-sectional profile of the duct supports has been strongly shaped to achieve the same result. Despite these measures almost all the problems of the prior art air duct solution are present also here and the increased turbulence does not necessarily enhance the cooling flow.
- stator of the invention which is characterized in that the stator is formed of stator plates of at least three different shapes, a stator plate of a first shape having a through- hole in the area of the stator back, substantially in line with a stator tooth, a stator plate of a second shape having a hole coinciding with a hole in the stator plate of the first shape and a conduit extending to this hole from the stator tooth on the inner circumference of the stator, the conduit extending through the entire thickness of the stator plate, and a stator plate of a third shape having a hole coinciding with the holes in the stator plates of the first and the second shape and a conduit extending from this hole to the outer circumference of the stator through the entire thickness of the stator plate, stator plates of the second and the third shape being placed side by side in the stator to provide assemblies of a predetermined thickness in such a manner that vent
- the invention is based on the idea of shaping the actual stator plates so that they provide the stator with venting conduits conveying cooling air. Hence the stator does not need to be divided into parts.
- the venting conduits are formed through the stator both in radial and in axial directions.
- An essential aspect of the invention is that the entire stator is formed of different kinds of stator plates, a suitable combination of which allows a desired structure containing the venting conduits to be achieved. Moreover, this allows the stator to be made stronger and easier to manufacture because prior art ducts and complicated supports for the stator can be disposed of. Further still, a stator produced with this technique can be wired in a normal manner.
- venting ducts made by shaping the stator plates are easy to design in an advantageous manner with regard to the flow of air.
- the only restriction to the design is caused by stator tooth width and by the minimum tooth neck required by die cutting.
- Figure 1 is a cross-sectional view in an axial direction of an electric machine showing only the portion above the symmetry plane formed by the shaft of the electric machine;
- Figure 2 shows a part of a stator plate of a first shape
- Figure 3 shows a part of a stator plate of a second shape
- Figure 4 shows a part of a stator plate of a third shape
- Figure 5 is a perspective view of a part a stator formed of stator plates according to Figures 1 to 3;
- Figure 6 is a perspective view of the rear side of the part shown in
- FIG. 1 shows an axial cross-section of an electric machine that the invention relates to.
- the electric machine in question is typically an electric motor, although a generator might also be concerned.
- the electric machine is provided with a stator 2 attached to its frame 1 and having in its core channel a coaxial rotor 3 rotatably mounted in bearings 4 arranged to the frame 1 . This forms an annular air gap 5 between the stator 2 and the rotor 3 for leading cooling air to the stator 2 for cooling it.
- stator 2 of the invention is formed of a plural number of stator plates 6, 7 and 8 fastened together in an axial direction, the plates forming radially extending teeth 9 and slots 10 between them for a stator winding 1 1 on the inner circumference side of the stator 2 and a stator back 12 on the outer circumference side of the stator 2 in an area between the outer circumference and a circumference defined by the bottoms of the slots 10, a plural number of venting conduits 13 leading from the teeth 9 on the inner circumference of the stator 2 to the outer circumference of the stator 2 being formed at the same time through the stator 2.
- stator 2 is formed of stator plates 6, 7 and 8 dissimilar in shape and the venting conduits 13 are formed using these plates.
- stator plates 6, 7 and 8 have three different shapes.
- the stator plate 6 of the first shape has a through-hole 14 in the area of the stator back 12, the hole being substantially in line with a stator tooth 9.
- the stator plate 7 of the second shape has a hole 15 coinciding with the hole 14 in the stator plate 6 of the first shape and a conduit 16 extending to this hole 15 from a tooth 9 on the inner circumference of the stator 2 through the entire thickness of the stator plate 7.
- the stator plate 8 of the third shape has a hole 17 coinciding with the holes 14 and 15 of the stator plates 6 and 7 of the first and the second shape, respectively, and a conduit 8 extending from this hole 17 to the outer circumference of the stator 2 through the entire thickness of the stator plate 8.
- stator plates 7 and 8 of the second and the third shape are arranged side by side to provide assemblies BC of a predetermined thickness, the assemblies B and C of the stator plates 7 and 8 together forming venting conduits 13 of a predetermined size, as mentioned above, leading from the inner circumference of the stator 2 to the outer circumference thereof, and assemblies A formed of stator plates 6 of the first shape are arranged alternately with assemblies BC formed of the stator plates 7 and 8 of the second and the third shape, respectively, so that assemblies BC formed of the stator plates 7, 8 of the second and third shape and located at a distance from one another are interconnected with their venting ducts 13 through the holes 14 in the stator plates 6 of the first shape.
- all the holes 14, 15 and 17 of the stator plates 6, 7 and 8 form axial conduits 19 through the stator back 12.
- Stator plates 7 and 8 may be piled to form stacks of specific predetermined thicknesses, i.e. assemblies B and C, and the cutting needed for the venting conduits 13 may be made either directly to a sub-assembly B and C or to single stator plates 7 and 8, depending of course on the thickness of an individual stator plate 7 and 8, for example.
- Stacks made of stator plates 6, i.e. assemblies A, that alternate with assemblies BC made of assemblies B and C, are typically substantially thicker than assembly BC.
- the thickness of assembly A, i.e. the distance between the venting conduits 13, is determined by the desired venting power and the strength requirements of the stator 2.
- the mouths of the conduits in the stator plates 7 of the second shape i.e. the mouths of the air conduits 13
- the cross-sections of the conduits 16 i.e. the venting conduits 13
- the axial conduits 19 increase towards the axial conduits 19.
- the cross-section of the conduits 18 (i.e. the venting conduits 13) of the stator plates of the third shape 8 increases towards the outer surface of the stator back 12.
- conduits 16 and 18 and the holes 14, 15 and 17 in them may be made by die cutting, laser cutting, water cutting or possibly partly by drilling (the axial conduits 19).
- stator 2 of the invention When the stator 2 of the invention is being implemented, a stator back of a relatively great thickness is required but then again in rapidly rotating machines thickness tends to be considerably greater than usual. All cuts, conduits, holes or slots in the stator plates 6, 7 and 8 must be large enough to avoid blocking during resinification.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention relates to a stator for an electric machine, the stator being formed of a plural number of stator plates fastened together in an axial direction and consisting of stator plates (6, 7, 8) of at least three different shapes for providing the stator with venting conduits (13) to convey ventilation air from an air gap between the rotor and the stator of the electric machine to the outer circumference of the stator.
Description
STATOR FOR ELECTRIC MACHINE
BACKGROUND OF THE INVENTION
The invention relates to a stator for an electric machine, the stator being meant to co-operate with a rotating rotor placed co-axially into its core channel, where an annular air gap is formed between the stator and the rotor, and the stator being formed of a plurality of stator plates fastened together in an axial direction, which plates in turn form radially extending teeth and slots between them for a stator winding on the inner circumference side of the stator and a stator back on the outer circumference side of the stator in an area between the outer circumference and a circumference defined by the bottoms of the slots, a plural number of venting conduits leading from the teeth on the inner circumference of the stator to the outer circumference thereof being formed through the stator. The electric machine in question is typically an electric motor, although a generator might also be concerned.
A commonly applied cooling solution in machines of this type is a stator consisting of two or more parts, with air ducts being formed between the stator parts to lead air therein from the stator air gap. Problems relating to this conventional solution arise from its complex structure and problems of manufacture. To make a stator of two or more parts sufficiently strong to be pressed against a frame is problematic. In addition, in an electric motor in which the rotor produces all or some of the pressure needed in the cooling circuit, dynamic pressure is lost into the air ducts when an air gap is crossed.
US Patent 31 16429 discloses a prior art solution in which a plural number of air ducts are formed at regular intervals along the stator length. The stator in question is thus a stator having a plurality of parts. The ducts in question are formed by means of straight duct supports installed radially between the stator stacks to allow air to flow in conduits formed by the duct supports and the stator stack sides facing them. Since air coming from the radial rotor ducts is in a strong circumferential motion, the straight duct supports force the air to turn from this almost circumferential motion to a radial motion on a very short distance equal to the length of the air gap. This turn causes a strong single resistance and thereby loss of dynamic pressure and, in addition, an unevenly distributed flow field in the stator.
US Patent 6498408 discloses a stator air duct solution in which the duct supports have a wavelike or a zigzag shape to increase turbulence in the
air ducts. Also the cross-sectional profile of the duct supports has been strongly shaped to achieve the same result. Despite these measures almost all the problems of the prior art air duct solution are present also here and the increased turbulence does not necessarily enhance the cooling flow. SUMMARY OF THE INVENTION
It is therefore an object of the invention to provide a novel stator in which the above problems are solved. This is achieved by a stator of the invention which is characterized in that the stator is formed of stator plates of at least three different shapes, a stator plate of a first shape having a through- hole in the area of the stator back, substantially in line with a stator tooth, a stator plate of a second shape having a hole coinciding with a hole in the stator plate of the first shape and a conduit extending to this hole from the stator tooth on the inner circumference of the stator, the conduit extending through the entire thickness of the stator plate, and a stator plate of a third shape having a hole coinciding with the holes in the stator plates of the first and the second shape and a conduit extending from this hole to the outer circumference of the stator through the entire thickness of the stator plate, stator plates of the second and the third shape being placed side by side in the stator to provide assemblies of a predetermined thickness in such a manner that venting conduits of a predetermined size leading from the inner circumference of the stator to the outer circumference thereof are formed, assemblies formed of stator plates of the first shape and assemblies formed of stator plates of the second and the third shape being placed alternately so that assemblies made of the stator plates of the second and the third shape and located at a distance from one another interconnect with their venting conduits through the holes in the stator plates of the first shape, all stator plate holes thus forming axial conduits extending through the stator back.
The invention is based on the idea of shaping the actual stator plates so that they provide the stator with venting conduits conveying cooling air. Hence the stator does not need to be divided into parts. The venting conduits are formed through the stator both in radial and in axial directions. An essential aspect of the invention is that the entire stator is formed of different kinds of stator plates, a suitable combination of which allows a desired structure containing the venting conduits to be achieved. Moreover, this allows the stator to be made stronger and easier to manufacture because prior art
ducts and complicated supports for the stator can be disposed of. Further still, a stator produced with this technique can be wired in a normal manner.
In the solution according to the invention venting ducts made by shaping the stator plates are easy to design in an advantageous manner with regard to the flow of air. The only restriction to the design is caused by stator tooth width and by the minimum tooth neck required by die cutting.
Some preferred embodiments of the invention are disclosed in the dependent claims and in the disclosure of the invention below.
LIST OF FIGURES
In the following the invention will be disclosed in greater detail by means of one preferred embodiment and with reference to the accompanying drawings, in which
Figure 1 is a cross-sectional view in an axial direction of an electric machine showing only the portion above the symmetry plane formed by the shaft of the electric machine;
Figure 2 shows a part of a stator plate of a first shape;
Figure 3 shows a part of a stator plate of a second shape; Figure 4 shows a part of a stator plate of a third shape;
Figure 5 is a perspective view of a part a stator formed of stator plates according to Figures 1 to 3; and
Figure 6 is a perspective view of the rear side of the part shown in
Figure 5.
DETAILED DISCLOSURE OF THE INVENTION
Reference is made to Figure 1 which shows an axial cross-section of an electric machine that the invention relates to. The electric machine in question is typically an electric motor, although a generator might also be concerned. The electric machine is provided with a stator 2 attached to its frame 1 and having in its core channel a coaxial rotor 3 rotatably mounted in bearings 4 arranged to the frame 1 . This forms an annular air gap 5 between the stator 2 and the rotor 3 for leading cooling air to the stator 2 for cooling it.
Reference is also made to Figures 2 to 6 in which the stator 2 of the invention is formed of a plural number of stator plates 6, 7 and 8 fastened together in an axial direction, the plates forming radially extending teeth 9 and slots 10 between them for a stator winding 1 1 on the inner circumference side of the stator 2 and a stator back 12 on the outer circumference side of the
stator 2 in an area between the outer circumference and a circumference defined by the bottoms of the slots 10, a plural number of venting conduits 13 leading from the teeth 9 on the inner circumference of the stator 2 to the outer circumference of the stator 2 being formed at the same time through the stator 2.
An essential aspect of the solution of the invention is that the stator 2 is formed of stator plates 6, 7 and 8 dissimilar in shape and the venting conduits 13 are formed using these plates. In this example the stator plates 6, 7 and 8 have three different shapes.
The stator plate 6 of the first shape has a through-hole 14 in the area of the stator back 12, the hole being substantially in line with a stator tooth 9.
The stator plate 7 of the second shape has a hole 15 coinciding with the hole 14 in the stator plate 6 of the first shape and a conduit 16 extending to this hole 15 from a tooth 9 on the inner circumference of the stator 2 through the entire thickness of the stator plate 7.
The stator plate 8 of the third shape has a hole 17 coinciding with the holes 14 and 15 of the stator plates 6 and 7 of the first and the second shape, respectively, and a conduit 8 extending from this hole 17 to the outer circumference of the stator 2 through the entire thickness of the stator plate 8.
In a complete stator 2 the stator plates 7 and 8 of the second and the third shape are arranged side by side to provide assemblies BC of a predetermined thickness, the assemblies B and C of the stator plates 7 and 8 together forming venting conduits 13 of a predetermined size, as mentioned above, leading from the inner circumference of the stator 2 to the outer circumference thereof, and assemblies A formed of stator plates 6 of the first shape are arranged alternately with assemblies BC formed of the stator plates 7 and 8 of the second and the third shape, respectively, so that assemblies BC formed of the stator plates 7, 8 of the second and third shape and located at a distance from one another are interconnected with their venting ducts 13 through the holes 14 in the stator plates 6 of the first shape. At the same time, all the holes 14, 15 and 17 of the stator plates 6, 7 and 8 form axial conduits 19 through the stator back 12.
Stator plates 7 and 8 may be piled to form stacks of specific predetermined thicknesses, i.e. assemblies B and C, and the cutting needed for the venting conduits 13 may be made either directly to a sub-assembly B
and C or to single stator plates 7 and 8, depending of course on the thickness of an individual stator plate 7 and 8, for example.
Stacks made of stator plates 6, i.e. assemblies A, that alternate with assemblies BC made of assemblies B and C, are typically substantially thicker than assembly BC. The thickness of assembly A, i.e. the distance between the venting conduits 13, is determined by the desired venting power and the strength requirements of the stator 2.
In order to provide optimal control of the air flow coming from the air gap 5 into the venting conduits 13, the mouths of the conduits in the stator plates 7 of the second shape (i.e. the mouths of the air conduits 13), which are connected to the air gap 5, are shaped to face the flow from the air gap 5. Also in these stator plates 7, the cross-sections of the conduits 16 (i.e. the venting conduits 13) increase towards the axial conduits 19.
In order to reduce discharge resistance to the air flow leaving the venting conduits 13 and, hence, the stator 2, the cross-section of the conduits 18 (i.e. the venting conduits 13) of the stator plates of the third shape 8 increases towards the outer surface of the stator back 12.
With regard to the manufacture of the stator plates 6, 7, and 8, the conduits 16 and 18 and the holes 14, 15 and 17 in them may be made by die cutting, laser cutting, water cutting or possibly partly by drilling (the axial conduits 19).
When the stator 2 of the invention is being implemented, a stator back of a relatively great thickness is required but then again in rapidly rotating machines thickness tends to be considerably greater than usual. All cuts, conduits, holes or slots in the stator plates 6, 7 and 8 must be large enough to avoid blocking during resinification.
It is also possible to increase the cooling area by cutting the conduits in slightly different points of the teeth 9, whereby the stator plates form a ribbing on the surface of the conduit.
The above specification is only meant to illustrate the basic idea of the invention. A person skilled in the art may therefore modify its details within the scope of the accompanying claims. It is also possible to form corresponding venting conduits to a rotor by cutting rotor plates in essentially similar way as the now described stator plates.
Claims
1 . A stator for an electric machine, the stator (2) being meant to cooperate with a rotating rotor (3) placed co-axially into its core channel, where an annular air gap (5) is formed between the stator (2) and the rotor (3), and the stator (2) being formed of a plurality of stator plates (6, 7, 8) fastened together in an axial direction, which plates in turn form radially extending teeth (9) and slots (10) between them for a stator winding (1 1 ) on the inner circumference side of the stator (2) and a stator back (12) on the outer circumference side of the stator (2) in an area between the outer circumference and a circumference defined by the bottoms of the slots (10), a plural number of venting conduits (13) leading from the teeth (9) on the inner circumference of the stator to the outer circumference thereof being formed through the stator (2), c h a r a c t e r i z e d in that the stator (2) is formed of stator plates (6, 7, 8) of at least three different shapes,
a stator plate of a first shape (6) having a through-hole (14) in the area of the stator back (12), substantially in line with a stator tooth (9);
a stator plate of a second shape (7) having a hole (15) coinciding with the hole (14) in the stator plate of the first shape (6) and a conduit (16) extending to this hole (15) from the tooth (9) on the inner circumference of the stator (2) through the entire thickness of the stator plate (7); and
a stator plate of a third shape (8) having a hole (17) coinciding with the holes (14, 15) in the stator plates of the first and the second shape (6, 7) and a conduit (18) extending from this hole (17) to the outer circumference of the stator (2) through the entire thickness of the stator plate (8);
stator plates of the second and the third shape (6, 7) being placed side by side in the stator (2) to provide assemblies (BC) of a predetermined thickness in such a manner that venting conduits (13) of a predetermined size leading from the inner circumference of the stator (2) to the outer circumference thereof are formed, assemblies (A) formed of stator plates of the first shape (6) alternating with the assemblies (BC) formed of the stator plates of the second and the third shape so that the assemblies (BC) made of the stator plates of the second and the third shape and located at a distance from one another interconnect with their venting conduits (13) through the holes (14) in the stator plates of the first shape (6), all the stator plate holes (14, 15, 17) thus forming axial conduits (19) extending through the back of the stator (12).
2. A stator as claimed in claim 1, characterized in that the conduit (16) in the stator plate of the second shape (7) is provided with a mouth connecting it to the air gap (5) and shaped so that it faces the flow in the air gap (5).
3. A stator as claimed in claim 1, characterized in that the cross-section of the conduit (16) in the stator plate of the second shape (7) increases towards the axial conduit (19).
4. A stator as claimed in claim 1, characterized in that the cross-section of the conduit in the stator plate of the third shape (8) increases towards the outer surface of the back (12) of the stator.
5. A stator as claimed in any one of the preceding claims, characterized in that the conduits (16, 18) and the holes (14, 15, 17) in the stator plates (6, 7, 8) are made by die cutting.
6. A stator as claimed in any one of claims 1 to 4, characterized in that the conduits (16, 18) and the holes (14, 15, 17) in the stator plates (6, 7, 8) are made by laser cutting.
7. A stator as claimed in any one of claims 1 to 4, characterized in that the conduits (16, 18) and the holes (14, 15, 17) in the stator plates (6, 7, 8) are made by water cutting.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2012/059006 WO2013170883A1 (en) | 2012-05-15 | 2012-05-15 | Stator for electric machine |
| PCT/EP2013/060041 WO2013171262A1 (en) | 2012-05-15 | 2013-05-15 | Core for electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2012/059006 WO2013170883A1 (en) | 2012-05-15 | 2012-05-15 | Stator for electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013170883A1 true WO2013170883A1 (en) | 2013-11-21 |
Family
ID=48463986
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2012/059006 WO2013170883A1 (en) | 2012-05-15 | 2012-05-15 | Stator for electric machine |
| PCT/EP2013/060041 WO2013171262A1 (en) | 2012-05-15 | 2013-05-15 | Core for electric machine |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2013/060041 WO2013171262A1 (en) | 2012-05-15 | 2013-05-15 | Core for electric machine |
Country Status (1)
| Country | Link |
|---|---|
| WO (2) | WO2013170883A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2958215A1 (en) * | 2014-06-18 | 2015-12-23 | Siemens Aktiengesellschaft | Generator armature |
| WO2016107626A3 (en) * | 2014-12-30 | 2016-09-09 | Vestas Wind Systems A/S | Integral fluid cooling of electrical machine field of the invention |
| EP3157138A1 (en) * | 2015-10-12 | 2017-04-19 | Siemens Aktiengesellschaft | Method for cooling a stack of metal sheets, stack of metal sheets, rotor, stator and electric machine |
| CN108282039A (en) * | 2017-12-07 | 2018-07-13 | 浙江大学 | A kind of vortex heat dissipation stator ventilating system of welding fin |
| WO2020239816A1 (en) * | 2019-05-28 | 2020-12-03 | Nidec Gpm Gmbh | Stator with liquid-cooled stator core |
| WO2022160511A1 (en) * | 2021-01-28 | 2022-08-04 | 浙江大学 | Baffling air-cooled generator stator and generator with high torque density |
| EP4084294A1 (en) * | 2021-04-29 | 2022-11-02 | Siemens Gamesa Renewable Energy A/S | Generator for producing electrical power and wind turbine |
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| US3116429A (en) | 1962-04-02 | 1963-12-31 | Gen Electric | Cooling arrangement for the stator teeth of a dynamoelectric machine |
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| DE3334501A1 (en) * | 1982-09-25 | 1984-03-29 | Fuji Electric Co., Ltd., Kawasaki, Kanagawa | Method for producing laminated iron cores for electrical machines and apparatuses, and an arrangement of a laminated iron core produced according to said method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10038352B2 (en) | 2014-06-18 | 2018-07-31 | Siemens Aktiengesellschaft | Generator armature |
| CN105322674A (en) * | 2014-06-18 | 2016-02-10 | 西门子公司 | Generator armature |
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| US11355976B2 (en) | 2014-12-30 | 2022-06-07 | Vestas Wind Systems A/S | Integral fluid cooling of electrical machine |
| EP3157138A1 (en) * | 2015-10-12 | 2017-04-19 | Siemens Aktiengesellschaft | Method for cooling a stack of metal sheets, stack of metal sheets, rotor, stator and electric machine |
| CN106849414B (en) * | 2015-10-12 | 2019-08-23 | 西门子公司 | For cooling down the method, stack of laminations, rotor, Stator and electrical machine of stack of laminations |
| CN106849414A (en) * | 2015-10-12 | 2017-06-13 | 西门子公司 | Method, stack of laminations, rotor, Stator and electrical machine for cooling down stack of laminations |
| CN108282039A (en) * | 2017-12-07 | 2018-07-13 | 浙江大学 | A kind of vortex heat dissipation stator ventilating system of welding fin |
| WO2020239816A1 (en) * | 2019-05-28 | 2020-12-03 | Nidec Gpm Gmbh | Stator with liquid-cooled stator core |
| WO2022160511A1 (en) * | 2021-01-28 | 2022-08-04 | 浙江大学 | Baffling air-cooled generator stator and generator with high torque density |
| EP4084294A1 (en) * | 2021-04-29 | 2022-11-02 | Siemens Gamesa Renewable Energy A/S | Generator for producing electrical power and wind turbine |
| WO2022228783A1 (en) * | 2021-04-29 | 2022-11-03 | Siemens Gamesa Renewable Energy A/S | Generator for producing electrical power and wind turbine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013171262A1 (en) | 2013-11-21 |
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