EP3695485A1 - Synchrongenerator für eine windenergieanlage und windenergieanlage - Google Patents
Synchrongenerator für eine windenergieanlage und windenergieanlageInfo
- Publication number
- EP3695485A1 EP3695485A1 EP18785356.9A EP18785356A EP3695485A1 EP 3695485 A1 EP3695485 A1 EP 3695485A1 EP 18785356 A EP18785356 A EP 18785356A EP 3695485 A1 EP3695485 A1 EP 3695485A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stator
- synchronous generator
- laminations
- wind turbine
- stator laminations
- 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.)
- Withdrawn
Links
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
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- 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
- H02K7/1838—Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/06—Magnetic cores, or permanent magnets characterised by their skew
-
- 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 synchronous generator for a wind turbine and a wind turbine.
- a synchronous generator for a wind turbine has a stator and a rotor.
- the stator of the wind energy plant typically comprises a stator support carrying a plurality of stator laminations.
- the stator laminations have a plurality of slots for receiving the stator winding.
- a plurality of stator laminations are placed on each other to form a stator of the stator. Subsequently, the stacked stator laminations can be welded together or fastened to one another or to each other via screw connections.
- the rotor of the synchronous generator typically has a plurality of rotor poles each with a pole shank and a pole head.
- a synchronous generator for a wind turbine, comprising a rotor and a stator.
- the stator has a stator or stator support ring and a plurality of stator laminations each having a plurality of recesses.
- the plurality of Statorbiechen together form a stator lamination with a plurality of grooves for receiving the stator winding.
- a plurality of Statorbiechen are nested on each other to form a stator lamination.
- stator laminations of a laminated stator core are arranged such that they are tangentially displaced in the axial direction, i. they may first be shifted in one direction and then be shifted in the other direction again, so that an arrow shape results in the plan view.
- the Statorbiechonge or leading edges of the laminated stator core are thus not straight, but designed arrow-shaped. This is advantageous because it can be avoided that two straight edges (of the stator and the rotor) run over each other and thus generate a cogging torque. Thus, the Nutrastmoment can be reduced.
- the stator laminations which are stacked one on the other are all the same, i. they all have the same shape.
- the sweep is achieved in that the sheets are shifted from each other, in the axial direction of the laminated stator core, the sieves are moved tangentially.
- a stator lamination has a recess.
- the slot is used to hold a Pfeilungsschachtel Anlagen.
- a swept strip can be provided on the inner belt of the stator ring.
- a nesting aid is provided on a stator support ring, the nesting aid being arranged in an arrow-shaped manner in the axial direction.
- the nesting aid runs in the axial direction, for example, to the center first at a first angle and then from the Wlitte, for example, at a second angle back, so that the box aid with respect to the center of the stator is mirror-symmetrical.
- stator support ring there is a notch or groove in the stator support ring.
- the stator laminations may then have lugs which can be placed in the milled recess.
- FIG. 1 shows a schematic sectional view of a nacelle of the wind energy plant of FIG. 1, FIG.
- FIG. 1 shows a perspective view of a portion of the stator according to an aspect of the present invention
- FIG. 1 shows a plan view of a section of a stator according to one aspect of the present invention
- FIG. 1 is a schematic sectional view of a section of a stator according to one aspect of the present invention, showing a schematic sectional view of a section of a stator according to the invention
- FIG. 1 shows a schematic representation of a Statortragringes according to one aspect of the present invention.
- FIG. 1 shows an enlarged view of an end of a boxing aid according to an aspect of the present invention.
- Fig. 1 shows a schematic illustration of a Windenergseaniage according to one aspect of the present invention.
- the wind energy plant 100 has a tower 102 and a pod 104.
- An aerodynamic rotor 106 with three rotor blades 108 and a spinner 110 is provided on the nacelle 104.
- the aerodynamic rotor 106 is set into rotary motion by the wind during operation of the wind turbine and drives a generator in the nacelle 104.
- Fig. 2 is a schematic sectional view of a nacelle of a wind turbine of Fig. 1.
- the nacelle 104 is rotatably mounted on the tower 102 and can be rotated by an azimuth drive 107 to obtain a desired azimuth angle.
- the nacelle 104 has a machine carrier 109 which holds a synchronous generator 111.
- the synchronous generator 111 is designed in particular as an angularly rotating, multi-pole synchronous ring generator.
- the synchronous generator 111 has a stator 200 and an internal rotor 300.
- the rotor 300 is connected to a rotor hub 113, so that a rotation of the aerodynamic rotor of the wind turbine takes place by rotation of the aerodynamic rotor.
- FIG. 3 shows a perspective view of a portion of the stator according to one aspect of the present invention.
- a conventional Statorbiechp and right Statorbiechp invention is shown on the left in Fig. 3 .
- the Statorbiechobi consists of a plurality of stator laminations 220, which - stacked in the axial direction L - stacked.
- the leading edges 220a of the stator laminations 220 do not have a straight line but form an arrow shape.
- a first straight line 211 along the leading edges 220a of a first section optionally meets a straight line 212 of the leading edges 220a of the second section in the middle of the stator lamination packet, so that these two straight lines 211, 212 meet at an angle. It can thereby be achieved that the front edges 220a of the stator laminations do not form a straight line, but are arranged at an angle. This is advantageous to reduce the Nutrastmomente.
- 4 shows a plan view of a section of a stator lamination 220 according to one aspect of the present invention.
- the stator plate 220 has a plurality of grooves 221 which serve to receive a stator winding.
- stator lamination 220 has a slot or an elongate recess 222, which is coupled to a recess 223. Further, a plurality of holes 224 are provided. These holes 224 may be used to secure the plurality of stator laminations 220 to a stator flexing package. Furthermore, optionally a further hole 225 can be provided with a further recess 226.
- the stator laminations can be arranged slightly shifted in their stacking.
- the length of the slot 222 may correspond, for example, 0.5 times the groove pitch.
- the leading edges 220a of the stator laminations 220 are provided at the inputs of the grooves 221.
- 5 shows a schematic sectional view of a section of a stator according to one aspect of the present invention.
- 5 shows a section of a Statortragringes 230 and dashed a Statorbiechp 220 is shown.
- the Statorbiechvol 220 can by means of a bar 250 which is fastened via fastening means 210 to the Statortragring 230, threaded.
- the sheet 220 with the Lang ch 222 are threaded over the bar 250.
- the bar serves as a box halves.
- the slot is used to hold the clamping bolt.
- the groove in the stator lamination back serves as a nesting aid to achieve the desired sweep.
- Fig. 6 shows a schematic sectional view of a section of a stator according to the invention.
- the bar 250 is configured as a rectangular bar. Otherwise, the configuration of the stator support ring and the sheets 220 substantially corresponds to the embodiment of FIG. 5.
- the bar 250 is not aligned parallel to the axial direction of the stator 200 but at least at an angle thereto so that a leading edge of the stator laminations 220 does not extend in the axial direction.
- the ledge or boxing aid runs like an egg, i. it extends along a first portion at a first angle to the axial direction and in a second portion in a second angle or axial direction.
- Fig. 7 shows a schematic representation of a Statortragringes according to one aspect of the present invention.
- a groove 231 has been milled into the stator support ring.
- This groove 231 is not straight, but designed like an arrow, that is. the groove 231 has two portions which meet at an angle.
- stator laminations 210 have a nose, which is insertable into the groove 231.
- FIG. 8 is an enlarged view of an end of a box lid according to an aspect of the present invention.
- FIG. In Fig. 8 in particular an angled bar is shown, by means of which the stator laminations can be nested at an angle.
- stator of the synchronous generator is advantageous because a sweep is achieved without the need to use different stator laminations.
- This can be provided by arrow-shaped strips or by an arrow-shaped groove in the Statortragring.
- the strips may have a Schwaiben- tail geometry, so that they can take over a radial force component. This is particularly advantageous in synchronous generators with a large laminated core depth.
- dovetail-shaped strips can be advantageous in an external rotor.
- recesses for example in the form of elongated holes, which can cooperate with strips on the stator support ring in order to allow a not straight leading edge of the grooves, are respectively provided on the stator lamination back.
- a milled in Statortragring and correspondingly formed lugs are provided on the segment plate back.
- the solution according to the invention is advantageous because now the pole cores of the rotor can be made straight, so that identical sheets can be used.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017123836.0A DE102017123836A1 (de) | 2017-10-13 | 2017-10-13 | Synchrongenerator für eine Windenergieanlage und Windenergieanlage |
PCT/EP2018/077597 WO2019072913A1 (de) | 2017-10-13 | 2018-10-10 | Synchrongenerator für eine windenergieanlage und windenergieanlage |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3695485A1 true EP3695485A1 (de) | 2020-08-19 |
Family
ID=63832433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18785356.9A Withdrawn EP3695485A1 (de) | 2017-10-13 | 2018-10-10 | Synchrongenerator für eine windenergieanlage und windenergieanlage |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3695485A1 (de) |
DE (1) | DE102017123836A1 (de) |
WO (1) | WO2019072913A1 (de) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5023500A (en) * | 1989-04-21 | 1991-06-11 | Century Electric, Inc. | Stator lamination with alignment structure for controlled skewing |
DE19923925A1 (de) * | 1999-05-26 | 2000-12-07 | Aloys Wobben | Synchronmaschine |
NL1013129C2 (nl) * | 1999-09-24 | 2001-03-27 | Lagerwey Windturbine B V | Windmolen. |
JP5303958B2 (ja) * | 2008-02-21 | 2013-10-02 | Jfeスチール株式会社 | 電動機および電動機固定子の固定方法 |
CN102255445A (zh) * | 2010-05-19 | 2011-11-23 | 蔡圣君 | 一种斜槽定子模组的制造方法 |
US8816546B2 (en) * | 2010-09-23 | 2014-08-26 | Northern Power Systems, Inc. | Electromagnetic rotary machines having modular active-coil portions and modules for such machines |
DE102010043426A1 (de) * | 2010-11-04 | 2012-05-10 | Aloys Wobben | Generator |
CN103051077B (zh) * | 2013-01-09 | 2015-02-04 | 国电联合动力技术有限公司 | 一种具有定子斜槽的永磁发电机及其斜槽实现方法 |
-
2017
- 2017-10-13 DE DE102017123836.0A patent/DE102017123836A1/de not_active Withdrawn
-
2018
- 2018-10-10 WO PCT/EP2018/077597 patent/WO2019072913A1/de unknown
- 2018-10-10 EP EP18785356.9A patent/EP3695485A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2019072913A1 (de) | 2019-04-18 |
DE102017123836A1 (de) | 2019-04-18 |
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