WO2015040586A2 - Wind turbine rotating electric machine stator - Google Patents

Wind turbine rotating electric machine stator Download PDF

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Publication number
WO2015040586A2
WO2015040586A2 PCT/IB2014/064672 IB2014064672W WO2015040586A2 WO 2015040586 A2 WO2015040586 A2 WO 2015040586A2 IB 2014064672 W IB2014064672 W IB 2014064672W WO 2015040586 A2 WO2015040586 A2 WO 2015040586A2
Authority
WO
WIPO (PCT)
Prior art keywords
stator
supporting wall
holes
foregoing
active
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.)
Ceased
Application number
PCT/IB2014/064672
Other languages
French (fr)
Other versions
WO2015040586A3 (en
Inventor
Emanuele GELMINI
Daniele FRANCO
Matteo Casazza
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Willic SARL
Original Assignee
Willic SARL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Willic SARL filed Critical Willic SARL
Publication of WO2015040586A2 publication Critical patent/WO2015040586A2/en
Publication of WO2015040586A3 publication Critical patent/WO2015040586A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1823—Rotary generators structurally associated with turbines or similar engines
    • H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
    • 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

Definitions

  • the present invention relates to a wind turbine rotating electric machine stator.
  • the present invention relates to a stator which forms part of a wind turbine rotating electric machine for producing electric energy, and comprises a supporting wall, and an active stator part contacting the supporting wall.
  • the active stator part produces heat which must be removed, in that the efficiency of the rotating electric machine depends on the extent to which it, and in particular its main component parts, such as the stator and rotor, are cooled.
  • Gas cooling systems are easier to produce but less effective than liquid types.
  • Patent Applications WO 2012/040,535, EP 2,395,629, EP 2,043,233, EP 2,320,540, EP 2,320,080, EP 2,182,570, and WO 99/17422 propose various types of liquid-cooled electric machine stators, all of which are of varying degrees of complexity.
  • a wind turbine electric rotating machine stator comprising a supporting wall; an active stator part contacting the supporting wall; and a cooling circuit extending partly inside the supporting wall and comprising a plurality of holes extending through the supporting wall.
  • the supporting wall serves to cool the active stator part by circulating cooling liquid inside the holes.
  • the holes are straight and therefore easy to form, and easy to inspect once plugs plugging the ends of the holes are removed.
  • the supporting wall and the active stator part are annular, preferably cylindrical.
  • the active stator part comprises a plurality of side by side stator segments, each facing a given number of respective holes.
  • the cooling circuit is designed to select the hole spacing along the supporting wall, and to arrange the holes according to, and so as to optimize cooling of, the stator segments.
  • Each stator segment comprises a plurality of electric windings, each of which, in use, produces heat.
  • the holes are located at an electric winding .
  • the supporting wall has a face designed to contact the active part.
  • the holes extend close to said face, so as to more effectively cool the active part .
  • the supporting wall has two opposite annular faces. Each hole extends from one annular face to the other, and is in fact a straight through hole. Preferably, the holes are parallel to an axis of symmetry of the stator.
  • the cooling circuit comprises fittings for connecting adjacent holes.
  • each fitting is formed by a recess in the supporting wall, and by a plate for sealing the recess.
  • the cooling circuit comprises two manifolds formed in the supporting wall to drain cooling liquid from the holes and to feed cooling liquid to the holes respectively.
  • each manifold is formed by a groove in the supporting wall, and by a plate for sealing the groove .
  • the manifolds are also advantageously integrated in the supporting wall.
  • the cooling circuit comprises a plurality of connecting holes, each intersecting a hole; the connecting holes preferably extending radially.
  • the connecting holes connect the holes to the fittings and manifolds, which are preferably formed at a different radial level from the holes.
  • the supporting wall is formed by calendering a flat aluminium plate, or is cast from cast iron .
  • the supporting wall then undergoes various machining operations, such as drilling the holes and the connecting holes, and milling the recesses and grooves to form the cooling circuit inside the supporting wall.
  • Figure 1 shows a longitudinal section, with parts removed for clarity, of a rotating electric machine stator
  • Figure 2 shows a smaller-scale exploded view in perspective, with parts removed for clarity, of a portion of the Figure 1 stator
  • Figure 3 shows a larger-scale, spread-out view, with parts removed for clarity, of the stator portion in Figure 2 ;
  • Figure 4 shows a larger-scale cross section, with parts removed for clarity, of the stator portion in Figure 2 ;
  • Figure 5 shows a schematic, spread-out view of a stator with a cooling circuit in accordance with a variation of the present invention.
  • Number 1 in Figure 1 indicates a wind turbine electric machine stator. More specifically, stator 1 forms part of a supporting structure of the wind turbine, and, in addition to supporting a rotor (not shown) of the electric machine, also serves to support a blade assembly (not shown) connected directly to the electric machine rotor.
  • stator 1 comprises a supporting wall 2; a frame 3 for connecting supporting wall 2 to the rotor and the blade assembly (not shown) ; and connectors 4 and 5 located on the opposite side to frame 3 to connect supporting wall 2 to the nacelle (not shown in the attached drawings) .
  • Stator 1 comprises an active stator part 6 preferably divided into stator segments 7, each of which is defined by a magnetic circuit (not shown) and at least one electric winding (not shown) .
  • Active stator part 6 is positioned contacting supporting wall 2.
  • Stator 1 as a whole is annular in shape about an axis of symmetry A.
  • supporting wall 2 and active stator part 6 are annular, preferably cylindrical.
  • Supporting wall 2 comprises two cylindrical faces 8 and 9 and two annular end faces 10 and 11.
  • active stator part 6 is positioned contacting face 8 of supporting wall 2.
  • Stator 1 is traversed by a cooling circuit 12 for removing heat generated, in use, by active stator part 6.
  • Cooling circuit 12 comprises a plurality of holes 13 formed in supporting wall 2.
  • stator segments 7 and the arrangement of holes 13 allow a given number of holes 13 to be located at a respective stator segment 7.
  • the preferred configuration is to have one hole 13 at a respective electric winding (not shown in the attached drawings) .
  • Holes 13 extends close to face 8 contacting active stator part 6.
  • Each hole 13 extends from one annular face 10 to the other annular face 11.
  • Each hole 13 is preferably parallel to axis A.
  • Holes 13 are preferably connected to one another at one end.
  • cooling circuit 12 comprises a fitting 14 formed in supporting wall 2.
  • Cooling circuit 12 comprises at least two manifolds 15, 16 located close to respective ends of holes 13 and formed in supporting wall 2 to drain cooling liquid from holes 13 and to feed cooling liquid to holes 13 respectively .
  • each fitting is formed by a recess 17 located at the ends of two holes 13 and formed in supporting wall 2, along face 9; and by a plate 18 designed to seal recess 17 and form a compartment communicating with holes 13 by two radial connecting holes 19, as shown more clearly in Figures 3 and 4.
  • manifolds 15 and 16 are formed by respective grooves 20 and 21 located on the opposite side to fittings 14 and formed in supporting wall 2, along cylindrical face 9; and by plates 22 and 23 designed to seal respective grooves 20 and 21 and form two respective compartments communicating with holes 13 by radial connecting holes 19, as shown more clearly in Figures 3 and 4.
  • plates 22 and 23 are divided into two parts and have respective connectors 24 and 25 for connecting manifolds 15 and 16 to a portion (not shown) of circuit 12 outside stator 1.
  • plates 18, 22 and 23 are preferably welded to supporting wall 2.
  • Supporting wall 2 has longitudinal grooves 26 for supporting active stator part 6 (Figure 1) .
  • Holes 13 are sealed at the ends. Preferably, holes 13 are closed by plugs 27 and 28 shown in Figure 3.
  • frame 3 is positioned resting against annular face 10 of supporting wall 2, so that, using seals not shown, frame 3 acts as a plug in lieu of plugs 27 and 28.
  • connector 4 using seals, is able to act as a plug in lieu of plugs 27 and 28.
  • Supporting wall 2 is preferably formed by calendering a flat aluminium plate.
  • supporting wall 2 is cast from cast iron .
  • Holes 13 and connecting holes 19 are drilled, and recesses 17 and grooves 20 and 21 are milled.
  • circuit 12 inside supporting wall 2 may be configured in a plurality of different ways from the one described with reference to Figures 1 to 4.
  • Figure 5 shows a circuit 29 which extends partly inside supporting wall 2, has no fittings, and has two manifolds 15 and 16 at respective annular faces 10 and 11, and a plurality of holes 13 connecting manifolds 15 and 16.
  • the cooling liquid flows along all of holes 13 in the same direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Motor Or Generator Frames (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

A wind turbine electric rotating machine stator (1) having a supporting wall (2); an active stator part (6) contacting the supporting wall (2); and a cooling circuit (12) extending partly inside the supporting wall (2) and having a plurality of holes (13) extending inside the supporting wall (2).

Description

WIND TURBINE ROTATING ELECTRIC MACHINE STATOR
TECHNICAL FIELD
The present invention relates to a wind turbine rotating electric machine stator.
BACKGROUND ART
More specifically, the present invention relates to a stator which forms part of a wind turbine rotating electric machine for producing electric energy, and comprises a supporting wall, and an active stator part contacting the supporting wall.
In use, the active stator part produces heat which must be removed, in that the efficiency of the rotating electric machine depends on the extent to which it, and in particular its main component parts, such as the stator and rotor, are cooled.
In this connection, two types of rotating electric machine cooling systems have been devised : gas, normally air, systems; and liquid, normally water, systems.
Gas cooling systems are easier to produce but less effective than liquid types.
Patent Applications WO 2012/040,535, EP 2,395,629, EP 2,043,233, EP 2,320,540, EP 2,320,080, EP 2,182,570, and WO 99/17422 propose various types of liquid-cooled electric machine stators, all of which are of varying degrees of complexity.
DISCLOSURE OF INVENTION
It is an object of the present invention to provide a liquid-cooled stator designed to eliminate the drawbacks of the known art.
According to the present invention, there is provided a wind turbine electric rotating machine stator, the stator comprising a supporting wall; an active stator part contacting the supporting wall; and a cooling circuit extending partly inside the supporting wall and comprising a plurality of holes extending through the supporting wall.
In the present invention, the supporting wall serves to cool the active stator part by circulating cooling liquid inside the holes. The holes are straight and therefore easy to form, and easy to inspect once plugs plugging the ends of the holes are removed.
Preferably, the supporting wall and the active stator part are annular, preferably cylindrical.
The active stator part comprises a plurality of side by side stator segments, each facing a given number of respective holes.
Basically, the cooling circuit is designed to select the hole spacing along the supporting wall, and to arrange the holes according to, and so as to optimize cooling of, the stator segments. Each stator segment comprises a plurality of electric windings, each of which, in use, produces heat. Preferably, the holes are located at an electric winding .
The supporting wall has a face designed to contact the active part. Preferably, the holes extend close to said face, so as to more effectively cool the active part .
The supporting wall has two opposite annular faces. Each hole extends from one annular face to the other, and is in fact a straight through hole. Preferably, the holes are parallel to an axis of symmetry of the stator.
Preferably, the cooling circuit comprises fittings for connecting adjacent holes.
This way, winding paths can be formed.
In a preferred embodiment of the present invention, each fitting is formed by a recess in the supporting wall, and by a plate for sealing the recess.
This way, the fitting is fully integrated in the supporting wall.
Preferably, the cooling circuit comprises two manifolds formed in the supporting wall to drain cooling liquid from the holes and to feed cooling liquid to the holes respectively.
Preferably, each manifold is formed by a groove in the supporting wall, and by a plate for sealing the groove .
The manifolds are also advantageously integrated in the supporting wall.
Preferably, the cooling circuit comprises a plurality of connecting holes, each intersecting a hole; the connecting holes preferably extending radially.
The connecting holes connect the holes to the fittings and manifolds, which are preferably formed at a different radial level from the holes.
Preferably, the supporting wall is formed by calendering a flat aluminium plate, or is cast from cast iron .
The supporting wall then undergoes various machining operations, such as drilling the holes and the connecting holes, and milling the recesses and grooves to form the cooling circuit inside the supporting wall. BRIEF DESCRIPTION OF THE DRAWINGS
A number of non-limiting embodiments of the present invention will be described by way of example with reference to the attached drawings, in which :
Figure 1 shows a longitudinal section, with parts removed for clarity, of a rotating electric machine stator;
Figure 2 shows a smaller-scale exploded view in perspective, with parts removed for clarity, of a portion of the Figure 1 stator; Figure 3 shows a larger-scale, spread-out view, with parts removed for clarity, of the stator portion in Figure 2 ;
Figure 4 shows a larger-scale cross section, with parts removed for clarity, of the stator portion in Figure 2 ;
Figure 5 shows a schematic, spread-out view of a stator with a cooling circuit in accordance with a variation of the present invention.
BEST MODE FOR CARRYING OUT THE INVENTION
Number 1 in Figure 1 indicates a wind turbine electric machine stator. More specifically, stator 1 forms part of a supporting structure of the wind turbine, and, in addition to supporting a rotor (not shown) of the electric machine, also serves to support a blade assembly (not shown) connected directly to the electric machine rotor.
In the example shown, stator 1 comprises a supporting wall 2; a frame 3 for connecting supporting wall 2 to the rotor and the blade assembly (not shown) ; and connectors 4 and 5 located on the opposite side to frame 3 to connect supporting wall 2 to the nacelle (not shown in the attached drawings) .
Stator 1 comprises an active stator part 6 preferably divided into stator segments 7, each of which is defined by a magnetic circuit (not shown) and at least one electric winding (not shown) . Active stator part 6 is positioned contacting supporting wall 2.
Stator 1 as a whole is annular in shape about an axis of symmetry A. In the example shown, supporting wall 2 and active stator part 6 are annular, preferably cylindrical. Supporting wall 2 comprises two cylindrical faces 8 and 9 and two annular end faces 10 and 11. And active stator part 6 is positioned contacting face 8 of supporting wall 2.
Stator 1 is traversed by a cooling circuit 12 for removing heat generated, in use, by active stator part 6.
Cooling circuit 12 comprises a plurality of holes 13 formed in supporting wall 2.
The size of stator segments 7 and the arrangement of holes 13 allow a given number of holes 13 to be located at a respective stator segment 7.
The preferred configuration is to have one hole 13 at a respective electric winding (not shown in the attached drawings) .
Holes 13 extends close to face 8 contacting active stator part 6.
Each hole 13 extends from one annular face 10 to the other annular face 11.
Each hole 13 is preferably parallel to axis A.
Holes 13 are preferably connected to one another at one end.
In the configuration shown, holes 13 are connected two by two at the ends. In actual fact, cooling circuit 12 comprises a fitting 14 formed in supporting wall 2.
Cooling circuit 12 comprises at least two manifolds 15, 16 located close to respective ends of holes 13 and formed in supporting wall 2 to drain cooling liquid from holes 13 and to feed cooling liquid to holes 13 respectively .
Construction-wise, and as shown in Figure 2, each fitting is formed by a recess 17 located at the ends of two holes 13 and formed in supporting wall 2, along face 9; and by a plate 18 designed to seal recess 17 and form a compartment communicating with holes 13 by two radial connecting holes 19, as shown more clearly in Figures 3 and 4.
Like fittings 14, manifolds 15 and 16 are formed by respective grooves 20 and 21 located on the opposite side to fittings 14 and formed in supporting wall 2, along cylindrical face 9; and by plates 22 and 23 designed to seal respective grooves 20 and 21 and form two respective compartments communicating with holes 13 by radial connecting holes 19, as shown more clearly in Figures 3 and 4.
In the example shown, plates 22 and 23 are divided into two parts and have respective connectors 24 and 25 for connecting manifolds 15 and 16 to a portion (not shown) of circuit 12 outside stator 1.
With reference to Figure 4, plates 18, 22 and 23 are preferably welded to supporting wall 2.
Supporting wall 2 has longitudinal grooves 26 for supporting active stator part 6 (Figure 1) .
Holes 13 are sealed at the ends. Preferably, holes 13 are closed by plugs 27 and 28 shown in Figure 3.
With reference to Figure 1, frame 3 is positioned resting against annular face 10 of supporting wall 2, so that, using seals not shown, frame 3 acts as a plug in lieu of plugs 27 and 28.
In the same way, connector 4, using seals, is able to act as a plug in lieu of plugs 27 and 28.
Supporting wall 2 is preferably formed by calendering a flat aluminium plate.
Alternatively, supporting wall 2 is cast from cast iron .
Holes 13 and connecting holes 19 are drilled, and recesses 17 and grooves 20 and 21 are milled.
Depending on cooling requirements, circuit 12 inside supporting wall 2 may be configured in a plurality of different ways from the one described with reference to Figures 1 to 4.
Figure 5 shows a circuit 29 which extends partly inside supporting wall 2, has no fittings, and has two manifolds 15 and 16 at respective annular faces 10 and 11, and a plurality of holes 13 connecting manifolds 15 and 16. In the Figure 5 configuration, the cooling liquid flows along all of holes 13 in the same direction.
Clearly, changes may be made to the stator according to the present invention without, however, departing from the protective scope of the accompanying Claims .

Claims

1) A wind turbine electric rotating machine stator, the stator (1) comprising a supporting wall (2); an active stator part (6) contacting the supporting wall (2); and a cooling circuit (12; 29) extending partly inside the supporting wall (2) and comprising a plurality of holes (13) extending inside the supporting wall (2) .
2) A stator as claimed in Claim 1, wherein the supporting wall (2) and the active stator part (6) are annular, preferably cylindrical.
3) A stator as claimed in any one of the foregoing Claims, wherein the active stator part (6) comprises a plurality of side by side stator segments (7); each stator segment (7) facing a given number of respective holes ( 13 ) .
4) A stator as claimed in Claim 3, wherein each stator segment (7) comprises a plurality of electric windings; each electric winding facing at least one hole (13) .
5) A stator as claimed in any one of the foregoing Claims, wherein the supporting wall (2) has a cylindrical face (8) designed to contact the active stator part (6); said holes (13) extending close to said face (8) . 6) A stator as claimed in any one of the foregoing Claims, wherein the supporting wall (2) has two annular faces (10, 11) ; each of said holes (13) extending from one annular face to the other (10, 11) .
7) A stator as claimed in any one of the foregoing
Claims, wherein said holes (13) are parallel to an axis (A) of symmetry of the stator (1) .
8) A stator as claimed in any one of the foregoing Claims, wherein the cooling circuit (12; 29) comprises fittings (14) for connecting adjacent holes (13) .
9) A stator as claimed in Claim 8, wherein each fitting (14) is formed by a recess (17) in the supporting wall (2), and by a plate (18) for sealing the recess ( 17 ) .
10) A stator as claimed in any one of the foregoing
Claims, wherein the cooling circuit (12; 29) comprises two manifolds (15, 16) formed in the supporting wall (2) to drain cooling liquid from the holes (13) and to feed cooling liquid to the holes (13) respectively.
11) A stator as claimed in Claim 10, wherein each manifold (15; 16) is formed by a groove (20; 21) in the supporting wall (2), and by a plate (22; 23) for sealing the groove (20; 21) .
12) A stator as claimed in any one of the foregoing Claims, wherein the cooling circuit (12; 29) comprises a plurality of connecting holes (19), each intersecting a hole (13); the connecting holes (19) preferably extending radially.
13) A stator as claimed in any one of the foregoing Claims, wherein the supporting wall (2) is formed by calendering a flat aluminium plate.
14) A stator as claimed in any one of Claims 1 to 11, wherein the supporting wall (2) is cast from cast iron .
PCT/IB2014/064672 2013-09-19 2014-09-19 Wind turbine rotating electric machine stator Ceased WO2015040586A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT001548A ITMI20131548A1 (en) 2013-09-19 2013-09-19 STATOR OF A ROTATING ELECTRIC MACHINE OF A AIRCRAFT MACHINE
ITMI2013A001548 2013-09-19

Publications (2)

Publication Number Publication Date
WO2015040586A2 true WO2015040586A2 (en) 2015-03-26
WO2015040586A3 WO2015040586A3 (en) 2015-11-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2014/064672 Ceased WO2015040586A2 (en) 2013-09-19 2014-09-19 Wind turbine rotating electric machine stator

Country Status (2)

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IT (1) ITMI20131548A1 (en)
WO (1) WO2015040586A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3499685A3 (en) * 2017-12-13 2019-08-14 FERRARI S.p.A. Stator of an electric machine provided with fluid cooling
NL2035492B1 (en) * 2023-07-27 2025-02-10 Univ Hunan NOVEL (Nx3)-PHASE PERMANENT MAGNET SYNCHRONOUS WIND-DRIVEN GENERATOR

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999017422A1 (en) 1997-09-30 1999-04-08 Abb Ab Method for mounting a cooling tube in a cooling tube channel
EP2043233A1 (en) 2006-07-18 2009-04-01 Gamesa Innovation & Technology, S.L. Cooled electric generator with tubes embedded in the cover thereof
EP2182570A1 (en) 2008-10-28 2010-05-05 Siemens Aktiengesellschaft Arrangement for cooling of an electrical machine
EP2320540A1 (en) 2009-11-05 2011-05-11 Siemens Aktiengesellschaft Arrangement for cooling of an electrical machine
EP2320080A1 (en) 2009-11-06 2011-05-11 Siemens Aktiengesellschaft Arrangement for cooling of an electrical generator
EP2395629A1 (en) 2010-06-11 2011-12-14 Siemens Aktiengesellschaft Stator element
WO2012040535A2 (en) 2010-09-23 2012-03-29 Northern Power Systems, Inc. Electromagnetic rotary machines having modular active-coil portions and modules for such machines

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29722432U1 (en) * 1997-12-18 1998-02-26 Siemens AG, 80333 München Electric motor
ES2343447B1 (en) * 2007-04-26 2011-05-20 M.Torres Olvega Industrial, S.L. AEROGENERATOR OF HIGH ELECTRICAL PRODUCTION.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999017422A1 (en) 1997-09-30 1999-04-08 Abb Ab Method for mounting a cooling tube in a cooling tube channel
EP2043233A1 (en) 2006-07-18 2009-04-01 Gamesa Innovation & Technology, S.L. Cooled electric generator with tubes embedded in the cover thereof
EP2182570A1 (en) 2008-10-28 2010-05-05 Siemens Aktiengesellschaft Arrangement for cooling of an electrical machine
EP2320540A1 (en) 2009-11-05 2011-05-11 Siemens Aktiengesellschaft Arrangement for cooling of an electrical machine
EP2320080A1 (en) 2009-11-06 2011-05-11 Siemens Aktiengesellschaft Arrangement for cooling of an electrical generator
EP2395629A1 (en) 2010-06-11 2011-12-14 Siemens Aktiengesellschaft Stator element
WO2012040535A2 (en) 2010-09-23 2012-03-29 Northern Power Systems, Inc. Electromagnetic rotary machines having modular active-coil portions and modules for such machines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3499685A3 (en) * 2017-12-13 2019-08-14 FERRARI S.p.A. Stator of an electric machine provided with fluid cooling
US10797542B2 (en) 2017-12-13 2020-10-06 Ferrari S.P.A. Stator of an electric machine provided with fluid cooling
NL2035492B1 (en) * 2023-07-27 2025-02-10 Univ Hunan NOVEL (Nx3)-PHASE PERMANENT MAGNET SYNCHRONOUS WIND-DRIVEN GENERATOR

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Publication number Publication date
ITMI20131548A1 (en) 2015-03-20
WO2015040586A3 (en) 2015-11-12

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