EP3878075A1 - Segment sheet for a stator lamination stack, stator lamination stack, and generator and wind turbine comprising same - Google Patents

Segment sheet for a stator lamination stack, stator lamination stack, and generator and wind turbine comprising same

Info

Publication number
EP3878075A1
EP3878075A1 EP19801866.5A EP19801866A EP3878075A1 EP 3878075 A1 EP3878075 A1 EP 3878075A1 EP 19801866 A EP19801866 A EP 19801866A EP 3878075 A1 EP3878075 A1 EP 3878075A1
Authority
EP
European Patent Office
Prior art keywords
segment
stator
section
generator
sheet
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.)
Pending
Application number
EP19801866.5A
Other languages
German (de)
French (fr)
Inventor
Jochen RÖER
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.)
Wobben Properties GmbH
Original Assignee
Wobben Properties GmbH
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 Wobben Properties GmbH filed Critical Wobben Properties GmbH
Publication of EP3878075A1 publication Critical patent/EP3878075A1/en
Pending legal-status Critical Current

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
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148—Sectional cores
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D15/00—Transmission of mechanical power
    • F03D15/20—Gearless transmission, i.e. direct-drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • 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
    • 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
    • H02K1/17—Stator cores with permanent magnets
    • 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
    • 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
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/187—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to inner stators
    • 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
    • H02K21/26—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating armatures and stationary magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
    • H02K23/04—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00—Application
    • F05B2220/70—Application in combination with
    • F05B2220/706—Application in combination with an electrical generator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/10—Stators
    • F05B2240/14—Casings, housings, nacelles, gondels or the like, protecting or supporting assemblies there within
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/221—Rotors for wind turbines with horizontal axis
    • F05B2240/2212—Rotors for wind turbines with horizontal axis perpendicular to wind direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/91—Mounting on supporting structures or systems on a stationary structure
    • F05B2240/912—Mounting on supporting structures or systems on a stationary structure on a tower
    • 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
    • H02K2201/15—Sectional machines
    • 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
    • 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
    • Y02E10/728—Onshore wind turbines

Definitions

  • the invention relates to a segment sheet for a stator lamination stack of a generator of a wind energy storage, the segment sheet having the shape of a ring segment, with a first radial section, in which recesses are provided for receiving a stator winding, with a second radial section, which is radially adjacent to the first Section is arranged, which forms a segment of a magnetic yoke of the generator, and with a third radial section, which is arranged radially adjacent to the second section.
  • the invention further relates to a stator laminated core for a generator of a wind energy installation, as well as a generator of a wind energy installation and a wind energy installation.
  • Wind turbines are generally known. They are used to convert wind energy into electrical energy using an electrical generator.
  • the core element for this task is the generator in wind turbines.
  • the generator has a generator stator and a generator rotor rotating relative to it, also referred to as a “rotor”.
  • the invention relates both to wind energy plants and generators with inner rotors and to outer rotors, which means that in the case of an inner rotor the generator rotor rotates inside in a ring-shaped stator, while in the case of an outer rotor the generator rotor rotates outside around the stator.
  • the generator stator has a stator winding in which an electrical voltage is induced by means of the rotating generator rotor.
  • the stator winding is received in slots, which in turn are provided in the stator, for example in a stator support ring.
  • stator laminated cores are formed by segment laminations, which are put together to form rings and stacked on top of one another to form the laminated cores.
  • a support structure has always been provided on the stator to support the stator laminated cores, usually as a welded or cast assembly, which stiffens the stator laminated cores.
  • the support structure comprises a stator support ring, on which "lower” pressure plate segments are arranged to form a ring on the machine support side and on the drive side, i.e. on one side facing the rotor, “upper” pressure plate segments are arranged to form a ring, between which the stator plate stack is formed.
  • the individual segment laminations were threaded onto box bars, which are arranged on the lower pressure laminate segments. The threading was carried out simultaneously on three adjacent box bars. After threading, the upper pressure plate segments were arranged on the stator plate package formed.
  • the stator core was braced using stud bolts and the lower and upper pressure plate segments were welded to the stator support ring.
  • the threading of the segment sheets is time-consuming and the welding processes for fastening the lower and upper pressure sheet segments harbor the risk that welding picks are overlooked in a groove receiving the stator winding, which can lead to a ground fault.
  • the welding of the sheet metal segments to the stator support ring on both sides hinders settlement compensation of the stator sheet stack.
  • the object of the invention was to overcome as far as possible the disadvantages known in the prior art.
  • the invention was based on the object of finding a way of reducing the assembly outlay for generators of wind energy plants.
  • the invention solves the underlying problem by proposing a segment sheet with the features of claim 1.
  • the invention proposes that the third radial section has at least two azimuthally spaced recesses which are designed for a positive connection with profiled strips arranged on a stator support ring.
  • a radial section is understood to mean a section of the segment sheet with an expansion in the radial direction.
  • the azimuthal distance is understood to mean the distance in the circumferential direction or direction of rotation of the generator which contains the segment sheets.
  • the invention follows the approach of providing the at least two recesses formed in the segment sheet with a contour that is complementary to the contour of the profiled strips.
  • the form-fitting connection of the segment sheets with profiled strips arranged on the stator support ring enables a significantly simplified insertion process for their assembly.
  • the complex and time-consuming simultaneous threading on the box bars provided according to the prior art can now be omitted.
  • Another advantage of the form-fitting connection of the segment sheets to the strips on the stator support ring is that an angled configuration of the strips allows an arrow in the stator sheet stack to be achieved without adversely affecting the ability to be assembled.
  • the strips viewed in the axial direction of the stator support ring, can have two sections arranged at an angle to one another.
  • the form-fitting connection of the segment sheets with profiled strips arranged on the stator support ring in particular by a radial fixation, can counteract the sagging of the sheet metal package relative to the stator support ring, particularly in the 12 o'clock position.
  • the positive connection between the segment sheet and the strips can be designed as a tongue and groove connection.
  • the assembly process is simplified by the design of the positive connection tongue and groove connection and is easy to automate.
  • the at least two recesses can be formed on the end of the segment sheet metal and each form a tangential nose-shaped projection which can be positively engaged with a corresponding recess on the strips.
  • Tangential is understood here as perpendicular to the radial sections of the segment sheet, and thus perpendicular to a radial line related to the center of curvature of the segment sheet.
  • the tangential nose-shaped projection of the segment plate with a corresponding recess can be used for assembly a first bar can be engaged by inserting. The segment plate can then be lifted on one side, ie moved in the axial direction of the stator support ring.
  • segment plate which has been lifted on one side can then be pivoted radially in the direction of the stator support ring until the segment plate rests on the stator support ring. Subsequently, the segment sheet can be put down, wherein the oppositely formed tangential nose-shaped projection of the segment sheet can be brought into engagement with a corresponding recess in the subsequent strip.
  • the strips can preferably be designed as extruded profiles, which preferably consist at least partially of a light metal.
  • the strips, which are designed as extruded profiles, can be manufactured inexpensively.
  • the profiled strips are preferably designed symmetrically.
  • the strips can have a hollow cylindrical section and a cuboid section.
  • the strip designed as an extruded profile can consist of a combination of a pipe section and a rectangular profile, the pipe section being able to be used to pass a cooling medium through.
  • the segment plate can have a tangential semicircular recess at one end, the contour of which corresponds to the contour of the hollow cylindrical section of the strip, and at its other end a tangential, essentially cuboid recess whose contour corresponds to the contour of the cuboid section of the strip .
  • the tangential semicircular recess can form an undercut.
  • the segment plate can first be pushed onto the hollow cylindrical section of the strip at an angle to the stator support ring.
  • the segment sheet can then be moved in the direction of the stator support ring by a radially directed movement until the segment sheet abuts. This allows the segment sheet to be positively fixed in the tangential and radial directions.
  • At least one radial recess can be arranged in the third section, which has an essentially parallelogram-shaped contour and that the profiled strip has a dovetail-shaped cross section.
  • sheet metal rings formed from the segment sheets can be arranged in pairs one above the other to form a segment sheet arrangement, a lower sheet metal ring being formed in each case from segment sheets, the at least one radial recess of which is one
  • the upper sheet metal ring is formed from segment sheets, the at least one radial recess of which
  • the undercuts are preferably shaped in that the radial recesses are shaped as non-orthogonal parallelograms, particularly preferably diamond-shaped or diamond-shaped. Due to the alternating arrangement of the segment sheets with radial recesses inclined in opposite directions one above the other, a trapezoidal connection, ie. H.
  • Segment sheets can be reached in the radial and tangential direction.
  • a projection extending in the tangential direction can be provided on the wall section, which delimits the recess in the radial direction, within the respective recess of the segment plate and serves to center the segment plate with respect to the strip received by the recess.
  • At least one radial recess can be formed in the third section, in which radially extending, elastically deformable holding sections are formed, which have undercuts at their free ends, which can be positively engaged with the bar.
  • the elastically deformable holding sections which extend radially from the bottom of the recess, can be pushed onto the strip if the segment plate is moved in the direction of the stator support ring by a radially directed movement.
  • the bar fastened to the stator support ring can have a contour that tapers in the radial direction, so that the holding sections are widened in the tangential direction when pushed onto the bar.
  • Grooves can be provided on the strip on the side facing the stator support ring, into which the undercuts can engage in a form-fitting manner at the free ends of the holding sections. This can bring about a radial pressing of the segment sheets onto the stator support ring, as a result of which better heat dissipation is achieved. It is advantageous if a receptacle is arranged centrally in a floor tangentially delimiting the recess, the contour of the receptacle corresponding to the contour of the free end of the strip. The bar can be taken up in sections from the holder. In this way, an improved centering of the segment sheet pushed onto the bar can be achieved.
  • At least one radial recess can be formed in the third section, in which tangentially extending, elastically or plastically deformable holding sections are formed, which function as a kind of toggle lever arrangement.
  • the free ends of the holding sections can be brought into engagement in sections with corresponding depressions in the bar when pushed onto the profiled bar. Due to the radially directed movement in the direction of the stator support ring, the holding sections which are positively engaged when pushed onto the bar are carried along and moved past their dead center.
  • the holding sections can be articulated to the walls delimiting the radial recess by means of a plastic hinge.
  • the particular radial fixation of the segment sheets due to the positive connection with the strips on the stator support ring is advantageous if there is a decrease in the pressing of the segment sheets with one another due to settlement during operation. An occasional radial migration of a segment sheet into the air gap, favored by the magnetic pull of the poles, can be avoided in this way.
  • the invention was explained above with reference to the segment sheet. In a further aspect, however, the invention also relates to a stator laminated core for a generator of a wind turbine.
  • the invention solves the problem on which it is based in such a stator lamination stack, in that the one with the features of claim 12 is formed.
  • the stator laminated core has a multiplicity of segment laminations, wherein a plurality of segment laminations are arranged on one another in one plane in such a way that they jointly form a laminated ring, and several segment laminations are stacked in the formed laminated rings in such a way that they together form the stator laminated core, wherein the stator laminated core has a first radial section, in which a plurality of grooves are provided for receiving a stator winding, the grooves being formed by recesses provided in the segment laminations, a second radial section, which is arranged radially adjacent to the first section, the one Segment of a magnetic yoke of the generator, and a third radial section that is radially adjacent to the is arranged second section, characterized in that the segment sheets are designed according to a preferred embodiment described above, wherein the third radial section has at least two azimuthally spaced recesses which are designed for a positive connection with profiled strips arranged
  • the stator lamination stack can be arranged between two rings formed from lower pressure plate segments and upper pressure plate segments, the lower pressure plate segments being arranged in a stationary manner on the stator support ring and the upper pressure plate segments being displaceable in the axial direction of the stator support ring.
  • the lower pressure plate segments can be arranged in a circumferential groove in the stator support ring, as a result of which they are fixed in the axial direction of the stator support ring. Due to the displaceability of the upper pressure plate segments in the axial direction of the stator support ring, it is possible to re-tension the segment plates of the stator plate stack which are pretensioned by means of tensioning means such as stud bolts, threaded rods or the like. In particular, the assembly step of welding can be dispensed with in this embodiment.
  • the invention has been described above with reference to the segment plate and the stator plate stack according to the first and second aspects of the invention.
  • the invention further relates to a generator of a wind turbine, in particular a multi-pole, slowly rotating synchronous
  • the invention solves the problem mentioned at the outset for a generator of the aforementioned type, in that the generator of a wind turbine, in particular a slowly rotating synchronous ring generator, a generator stator and a generator rotor rotatably mounted relative to the generator stator, the
  • Generator stator has at least one stator laminated core, in which a plurality of grooves are provided, in which a stator winding is accommodated, the generator stator having a stator support ring, on which strips are arranged in the tangential direction, at least one stator laminated core on the strips by means of a positive connection with the Last is connected.
  • the at least one stator laminated core is preferably designed according to one of the preferred embodiments described above.
  • the invention relates to a wind turbine.
  • the invention solves the problem mentioned at the outset in a wind turbine, in particular a gearless wind turbine, with a tower, a gondola rotatably arranged on the tower, a hub rotatably mounted on the gondola with a number of rotor blades, and a generator for providing electrical energy, has a generator rotor connected to the hub and a generator stator connected to the nacelle, in that the generator is designed according to one of the preferred embodiments described above.
  • FIG. 1 shows a wind turbine schematically in a perspective view
  • FIG. 2 shows a nacelle of the wind power plant according to FIG. 1 schematically in a partially sectioned view
  • FIG. 3a shows a schematic illustration of a partial view of a stator support ring with a lower pressure plate segment arranged on the machine support side
  • FIG. 3b is a schematic representation of the stator support ring according to FIG. 3a with an upper pressure plate segment arranged on the drive side,
  • Fig. 4 is a schematic representation of a segment sheet
  • Fig. 5 schematically shows a bar in a perspective view (A) and in one
  • FIG. 6 schematically shows a partial view of the stator support ring according to FIG. 3a with a
  • FIG. 7 schematically shows a partial view of the stator support ring according to FIG.
  • FIG. 9 schematically shows a partial view of the segment sheet according to FIG. 8 in a preferred development
  • FIG. 10 schematically shows a partial view of the segment sheet according to FIG. 9 in a preferred development
  • FIG. 11 schematically shows a partial view of a segment plate and a strip according to a further preferred embodiment in a position spaced apart from the stator support ring
  • FIG. 12 schematically shows a partial view of the segment plate according to FIG. 11 in a preferred development.
  • FIG. 1 shows a wind turbine 100 with a tower 102 and a nacelle 104.
  • a rotor 106 with three rotor blades 108 and a spinner 110 is arranged on the nacelle 104.
  • the rotor 106 is set into a rotary movement by the wind and thereby drives a generator 1 (FIG. 2) in the nacelle 104.
  • the nacelle 104 of the wind turbine 100 according to FIG. 1 is shown schematically in FIG. 2 in a partially sectioned view.
  • the nacelle 104 is rotatably mounted on the tower 102 and connected in a generally known manner, driven by means of an azimuth drive 112.
  • a machine carrier 1 16 is also arranged in a generally known manner, which carries an axle journal 1 14.
  • the generator 1 has a generator stator 5, which is fastened to the machine carrier 1 16 in the nacelle 104 by means of the axle journal 1 14.
  • Other design options which are not excluded by the invention, provide, for example, to connect the generator stator 5 directly to the machine carrier 116 or a corresponding component of the nacelle 104.
  • the generator 1 according to FIG. 2 has a generator rotor 3 which is designed as an external rotor. The rotational movement of the rotor 106 is transmitted to the generator rotor 3.
  • Alternative design options not excluded from the scope of the invention also provide, for example, a generator rotor configured as an internal rotor.
  • the generator rotor 3 is rotatably connected to the hub 106.
  • the detailed structure of the generator stator 5 is shown in FIGS. 3a and 3b.
  • the generator 5 has a hollow cylindrical stator ring 7.
  • the generator rotor 3 runs outside the stator ring 7, spaced from it by an annular gap.
  • the stator ring 7 is fastened to a stator receptacle by means of two support rings.
  • the stator receptacle is in turn screwed to the journal 14.
  • Other fastening options for the stator 5 on the machine carrier 116 are also within the scope of the invention.
  • the support rings are comparatively thin-walled sheets, which leave the load-bearing capacity and mechanical rigidity of the stator ring 7 essentially unaffected. Instead, the stator ring 7 is designed to be self-supporting.
  • a large number of plate-shaped segment laminations 21 are arranged in the stator support ring 7, which are lined up to form sheet metal rings and are stacked on top of one another in such a way that at least one stator laminated core 15 is produced.
  • FIG. 3a shows a schematic illustration of a partial view of the stator support ring 7 with a lower pressure plate segment 9 arranged on the machine support side
  • Pressure plate segment 9 is designed in the form of a ring segment, i.e. it has an arcuate course curved around a central axis.
  • a plurality of lower pressure plate segments 9 are inserted into a circumferential groove in the stator support ring 7 and strung together to form a closed ring.
  • the width of the groove corresponds to the thickness of the lower pressure plate segments 9.
  • Pressure plate segments 9 are manufactured with a minus tolerance, so that a gap is formed when inserted and lined up, which corresponds to the sum of the partial tolerances of the individual lower pressure plate segments 9. This enables the last lower pressure plate segment 9 to be inserted between two adjacent lower pressure plate segments 9. After the last lower pressure plate segment has been inserted
  • Pressure plate segments 9 equalized.
  • the lower pressure plate segments 9 have, on their side facing the stator support ring 7, azimuthally spaced radial recesses 11.
  • On the stator support ring 7 are vertical to the Pressure plate segments 9 oriented strips 13 attached, which extend in sections into the recesses 1 1.
  • Fig. 3b shows a schematic representation of the stator support ring 7 according to Fig. 3a with the drive side, i.e. on an upper pressure plate segment 17 arranged on the side facing the rotor 106.
  • a plurality of upper pressure plate segments 9 are lined up to form a ring.
  • the upper pressure plate segments 17 are pushed onto the strips 13.
  • the upper pressure plate segments 17 have azimuthally arranged radial recesses which can be positively engaged with the profiled strips 13.
  • the upper pressure plate segments 17 can be constructed essentially identically to the lower pressure plate segments 9.
  • the stator lamination stack 15 is located between the lower pressure plate segments 9 and the upper pressure plate segments 17.
  • Both the lower pressure plate segments 9 and the upper pressure plate segments 17 have a plurality of corresponding radial recesses 19 which are adapted to accommodate a stator winding. While the lower pressure plate segments 9 arranged in the circumferential groove of the stator support ring 7 are fixed in the axial direction of the stator support ring 7, the upper pressure plate segments 17 are displaceable in the axial direction.
  • the lower pressure plate segments 9 and the upper pressure plate segments 17 form a type of fixed bearing / floating bearing arrangement, between which the stator plate stack 15 is arranged.
  • the stator laminated core 15 consists of a plurality of segment laminations 21, one of which is shown schematically in FIG. 4.
  • the segment sheet 21 shown in Fig. 4 is ring segment-shaped, i.e. it has an arcuate course curved around a central axis.
  • the segment plate 21 has a first radial section 23, in which a plurality of cutouts 29 are made. The cutouts 29 are adapted to receive a stator wind
  • a third radial section 27 is located adjacent to the second radial section 25.
  • the third radial section 27 has a multiplicity of through openings 31, which are used to carry out tensioning means.
  • the tensioning means can be designed, for example, as threaded rods, screws, tensioning cables and the like.
  • the segment plate 21 is provided with at least one radial recess 33 which has an essentially U-shaped cross section. In the illustrated embodiment, there are two radial ones Recesses 33 introduced in the third section 27. The dimensions of the recesses 33 are selected such that the respective strip 13 is enclosed by the recess 33 without contact.
  • the third section 27 has a profiled projection 35 at its free ends, which protrudes into a radial recess 36 formed at the end.
  • the respective projection 35 is convex.
  • the projections 35 are designed nose-shaped.
  • the projections 35 are in the assembled position in positive engagement with the strips 13, between which the respective segment plate 21 is mounted.
  • the strips 13 have arcuate depressions 37 which have a shape and dimension corresponding to the projections 35.
  • Fig. 5 shows schematically a bar 13 in a perspective partial view (A) and in a top view (B).
  • the strip 13 is provided, in particular at equidistant intervals, with through-bores 39, which are used to hold screws or the like for fastening the strip 13 to the stator support ring 7.
  • the strip 13 is designed on both sides with arcuate depressions 37.
  • the arcuate depressions extend tangentially to the stator support ring 7.
  • the respective projections 35 of segment plates 21 facing each other engage in the respective arcuate depression 37 in a form-fitting manner.
  • the strips 13 are preferably made of a light metal or a light metal alloy, in particular aluminum or the like.
  • the strips 13 are preferably designed as extruded profiles.
  • the segment laminations 21 are lined up to form a closed laminated ring.
  • the arrangement of the segment plates 21 in the clockwise direction is described below. Due to the symmetry of the segment sheets 21 and the strips 13, the arrangement of the segment sheets 21 in the counterclockwise direction can be carried out in an analogous manner.
  • a first assembly step the respective segment sheet 21 of the sheet metal ring is inserted with one of its nose-shaped projections 35 into the arcuate recess 37 of a bar 13 which faces a bar 13 which is adjacent in the clockwise direction.
  • the tangential projection 35 is held at the opposite end of the segment plate 21 radially spaced from the stator support ring 7.
  • the segment plate 21 is raised at its freely movable end, which is not in engagement with the strip 13, that is, moved in the axial direction, so that the The segment plate 21 can then be pivoted without collision in the direction of the stator support ring 7 and the strip 13, which is seen in the clockwise direction.
  • the segment plate 21 is put down, the projection 35 being brought into positive engagement with the arcuate depression 37 of the bar 13 adjacent in the clockwise direction.
  • a second sheet metal ring is constructed in the same way by inserting the segment sheets 21 between the strips 13 on the first sheet metal ring.
  • the arrangement of the segment sheets 21 is carried out with an offset of one bar spacing relative to the segment sheets 21 of the first sheet metal ring.
  • a bar spacing preferably corresponds to an offset of approximately 5 °.
  • a third sheet metal ring is built up on the second sheet metal ring by inserting the segment sheets 21 with an offset of two strip spacings with respect to the first sheet metal ring.
  • the arrangement of the segment sheets 21 of a fourth sheet metal ring again corresponds to the first sheet metal ring, and thus has no offset. This alternate stratification is continued until the desired height of the stator laminate 15 is reached.
  • FIG. 6 schematically shows a partial view of the stator support ring 7 according to FIG.
  • the strip 41 designed as an extruded profile comprises a hollow cylindrical or tubular section 43 and a cuboid section 45.
  • the hollow cylindrical section 43 can be used within the stator 5 for cooling purposes.
  • a, preferably liquid, cooling medium can be passed through the hollow cylindrical section 43 of the strip 41 arranged on the stator support ring 7.
  • the segment plate 47 For the positive connection of the segment plate 47 to the bar 41, the segment plate 47 has a tangential semicircular recess 49, the radius of which is the outer radius of the corresponds to hollow cylindrical portion 43.
  • the segment plate 47 is placed at an angle to the lateral surface of the stator support ring 7 and then pivoted in its direction until the segment plate 47 bears against the lateral surface of the stator support ring 7.
  • Form-locking elements corresponding to one another are preferably formed on opposite sides of the segment sheets 47, which bring about a fixation to one another in the applied position of the segment sheets.
  • a recess corresponding to the contour of the cuboid section 45 can be formed.
  • the segment plate 47 is inserted analogously to the procedure described above.
  • FIG. 7 schematically shows a partial view of the stator support ring 7 according to FIG. 3a with a bar 51 and a partial view of two segment sheets 53, 55 according to a third embodiment, the segment sheets 53, 55 in an exploded view (C) and one applied to the stator support ring 7 Position (D) are shown.
  • the profiled strip 51 has a trapezoidal cross section, which tapers towards the stator support ring 7.
  • the segment plate 53 and the segment plate 55 have in their respective third section 27 at least one recess 59 or 61, the contour of which essentially corresponds to the shape of a parallelogram.
  • the at least one parallelogram-shaped recess 59 of the segment plate 53 is inclined to the left in the exemplary embodiment shown, while the parallelogram-shaped one
  • Recess 61 of the segment plate 55 is inclined in the opposite direction to the right.
  • at least one through hole 63 is arranged, which serves to receive a threaded rod 57 or a comparable bracing means.
  • the view (F) according to FIG. 7 shows the pairs arranged one above the other
  • Segment plates 53, 55 in their position applied to the stator support ring 7.
  • the parallelogram-shaped design of the at least one recesses 59 and 61 makes it possible to push the segment plate 53 or 55 onto the bar 51 on the stator support ring 7 by an essentially radially directed movement.
  • the respective oppositely oriented undercut of the recess 59 or 61 is brought into engagement with the bar 51 in a form-fitting manner in sections.
  • the segment plate 53 is arranged below the segment plate 55.
  • the threaded rod 57 is inserted into the through hole 63 in the segment sheets 53, 55.
  • stator laminated core 15 takes place in an analogous manner to that which has already been described above.
  • the segment laminations 53 and 55 are strung together to form one of the laminated rings.
  • only the segment sheets 53 or only the segment sheets 55 are used alternately for the respective sheet metal ring. Due to the alternating arrangement of the segment plates 53 and 55 one above the other, which have the oppositely oriented undercuts on the recesses 59 and 61, a type of dovetail connection is formed with the strip 51.
  • FIG. 8 shows a schematic partial view of a segment plate 65 and a strip 67 according to a further embodiment, which are arranged on the stator support ring 7.
  • the strip 67 is fastened by means of a screw connection 69 to the stator support ring 7 in a detachable manner.
  • the structure of the first section 23 and the second section 25 does not differ from the structure of the embodiment of the segment sheet 21 described above.
  • the third radial section 27 has a multiplicity of through openings 31, which serve for the implementation of tensioning means.
  • At least two radial recesses 71 are arranged in the third section 27 at preferably equidistant intervals, which are open on their side facing the stator support ring 7. Such a recess 71 is shown in FIG. 8.
  • the strip 67 has a substantially trapezoidal cross section. Grooves 73 are provided on both sides in the base region of the strip 67, with which the strip 67 rests on the stator support ring 7.
  • the upwardly open recess 71 is delimited radially by walls 85 and tangentially by a floor 83.
  • the recess 71 has in its bottom 83 a receptacle 75 corresponding to the contour of the free end of the bar 67.
  • the receptacle 75 is arranged centrally in the recess 71.
  • the free end of the strip 67 penetrates into the receptacle 75 in sections.
  • two elastically deformable holding sections 77 are formed in the third section 27, which extend radially from the bottom 83 of the recess 71.
  • the holding portions 77 are formed by punching out.
  • the two holding sections 77 are each inclined at an angle to the bottom 83 of the recess 71 and limit an opening. At the ends of the holding sections 77 they each have a tangential shoulder 79 which engages in the respective groove 73 on the bar 67.
  • the segment sheet metal 65 is aligned with the strips 67, so that the holding sections 77 are essentially positioned opposite the strips 67.
  • the strips 67 are inserted through the opening between the holding sections 77.
  • the elastically deformable holding sections 77 are pressed apart laterally due to the trapezoidal shape of the strip 67.
  • the shoulders 79 are located on the holding sections 77 at the level of the respective groove 73, into which the shoulders 79 engage in a form-fitting manner due to the restoring force.
  • FIG. 9 schematically shows a partial view of the segment sheet 65 according to FIG. 8 in a preferred development.
  • the elastically deformable are located in the recess 71 in the third section 27
  • Holding sections 81 are formed, which start from wall sections 85, which laterally delimit the recess 71, and extend in sections in the tangential direction of the recess 71.
  • the two holding sections 81 have an essentially U-shaped course.
  • a shoulder 79 is arranged in each case, which engages in the respective groove 73 on the bar 67.
  • FIG. 10 schematically shows a partial view of the segment plate 65 according to FIG. 9 in a preferred development. According to this development, two mutually opposite, elastically deformable are in the respective recess 71
  • Holding portions 91 are arranged, which have a substantially S-shaped course.
  • the receptacle 75 on the bottom 83 of the recess 71 and the two holding sections 81 and 91 effect a centering and latching function during the assembly of the segment plate 65.
  • FIG. 1 1 schematically shows a partial view of a segment plate 93 and a strip 97 according to a further preferred embodiment in one to the stator support ring 7 spaced position.
  • the strip 97 is profiled at its free end.
  • a base section 101 with a cuboid cross section merges into an end section 103 of smaller width.
  • arcuate depressions 99 are formed between the base section 101 and the end section 103.
  • Sections 95 formed on the walls 85 of the recess 71 of the segment sheet 93 engage in sections in these recesses 99 and are supported on the base section 101.
  • the two holding sections 95 are plastically or elastically deformable.
  • the segment plate 93 is pressed against the stator support ring 7 by a radially directed movement relative to the stator support ring 7. As indicated by the broken line of the position of end section 103 'and holding sections 95', these are moved in the direction of the bottom 83 of the recess 71.
  • the holding sections 95 ′′ reach their end position by being carried along by the base section 101.
  • the configuration of the holding sections 95 and the strip 97 are selected such that a type of toggle lever arrangement is realized by means of which the segment plate 93 is fixed radially and tangentially to the stator support ring 7.
  • the holding sections 95 are designed as toggle levers which, due to the radially directed movement of the segment plate 93 against the stator support ring 7, are moved past their dead center, so that a locking effect occurs between the holding sections 95 and the strip 97.
  • FIG. 12 schematically shows a partial view of the segment sheet 93 according to FIG. 9 in a preferred development.
  • the segment sheet 93 is shown spaced from the stator support ring 7.
  • a bar 107 is detachably fastened to the stator support ring 7 by means of the screw connection 69.
  • the profile of the strip 107 differs from the profile of the strip 97, which is shown in FIG. 11, by an asymmetrical design.
  • an arcuate depression 99 which has a curved course, is formed on only one side.
  • the holding section 95 formed on the wall 85 of the recess 71 engages in sections in this recess 99 in a form-fitting manner.
  • the holding section 95 Due to the radially directed movement relative to the stator support ring 7, the holding section 95 is moved past its dead center. On the side facing away from the recess 99, the base section 109 has no change in the profile profile. On the other hand, the recess 71 has a wall provided with a toothing 105 which is opposite that of the wall 85. The toothing 105 is brought into engagement with the surface of the base section 109 facing it. Like a toggle Functioning holding section 95 cooperates with the toothing 105 in order to fix the segment plate 93 lying against the stator support ring 7 tangentially and radially.

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Abstract

The invention relates to a segment sheet (21, 47, 53, 55, 65, 93) for a stator lamination stack (15) of a generator (1) of a wind turbine (100). The segment sheet (21) has the shape of a ring segment with a first radial section (23) in which recesses (29) are provided for receiving a stator winding, a second radial section (25) which is arranged adjacently to the first section (23) in the radial direction and which forms a segment of a magnetic yoke of the generator (1), and a third radial section (27) which is arranged adjacently to the second section (25) in the radial direction. According to the invention, the third radial section (27) has at least two recesses (36, 49, 59, 61, 71) that are arranged in an azimuthally spaced manner and are designed to connect to profiled strips (13, 41, 51, 67, 97, 107), which are arranged on a stator support ring (7), in order to establish a form-fitting connection.

Description

Segmentblech für ein Statorblechpaket, Statorblechpaket, sowie Generator sowie Windenergieanlage mit selbigem  Segment sheet for a stator laminated core, stator laminated core, as well as generator and wind turbine with the same
Die Erfindung betrifft ein Segmentblech für ein Statorblechpaket eines Generators einer Windenergieablage, wobei das Segmentblech die Form eines Ringsegmentes aufweist, mit einem ersten radialen Abschnitt, in welchem Aussparungen zur Aufnahme einer Statorwicklung vorgesehen sind, mit einem zweiten radialen Abschnitt, der radial benachbart zu dem ersten Abschnitt angeordnet ist, der ein Segment eines magnetischen Jochs des Generators bildet, sowie mit einem dritten radialen Abschnitt, der radial benachbart zu dem zweiten Abschnitt angeordnet ist. Die Erfindung betrifft ferner ein Statorblechpaket für einen Generator einer Windenergieanlage, sowie einen Generator einer Windenergieanlage und eine Windenergieanlage. In der prioritätsbegründenden deutschen Anmeldung hat das Deutsche Patent- und Markenamt das folgende Dokument recherchiert: DE 10 2008 063 783 A1. The invention relates to a segment sheet for a stator lamination stack of a generator of a wind energy storage, the segment sheet having the shape of a ring segment, with a first radial section, in which recesses are provided for receiving a stator winding, with a second radial section, which is radially adjacent to the first Section is arranged, which forms a segment of a magnetic yoke of the generator, and with a third radial section, which is arranged radially adjacent to the second section. The invention further relates to a stator laminated core for a generator of a wind energy installation, as well as a generator of a wind energy installation and a wind energy installation. In the priority-based German application, the German Patent and Trade Mark Office researched the following document: DE 10 2008 063 783 A1.
Windenergieanlagen sind allgemein bekannt. Sie werden genutzt, um Windenergie mittels eines elektrischen Generators in elektrische Energie zu wandeln. Kernelement für diese Aufgabe ist in Windenergieanlagen der Generator. Der Generator weist einen Generatorstator und einen relativ dazu umlaufenden Generatorrotor auf, auch als„Läufer“ bezeichnet. Die Erfindung betrifft sowohl Windenergieanlagen und Generatoren mit Innenläufern, als auch Außenläufern, worunter verstanden wird, dass bei einem Innenläufer der Generatorrotor innen in einem ringförmigen Stator umläuft, während bei einem Außenläufer der Generatorrotor außen um den Stator umläuft. Der Generatorstator weist eine Statorwicklung auf, in der mittels des umlaufenden Generatorrotors eine elektrische Spannung induziert wird. Die Statorwicklung ist in Nuten aufgenommen, die wiederum im Stator, etwa in einem Statortragring, vorgesehen sind. Wind turbines are generally known. They are used to convert wind energy into electrical energy using an electrical generator. The core element for this task is the generator in wind turbines. The generator has a generator stator and a generator rotor rotating relative to it, also referred to as a “rotor”. The invention relates both to wind energy plants and generators with inner rotors and to outer rotors, which means that in the case of an inner rotor the generator rotor rotates inside in a ring-shaped stator, while in the case of an outer rotor the generator rotor rotates outside around the stator. The generator stator has a stator winding in which an electrical voltage is induced by means of the rotating generator rotor. The stator winding is received in slots, which in turn are provided in the stator, for example in a stator support ring.
Es ist allgemein bekannt, das Bauteil, welches die Statorwicklung aufnimmt, aus einem oder mehreren Statorblechpaketen auszubilden. Jene Statorblechpakete werden durch Segmentbleche gebildet, die zu Ringen aneinandergelegt und zum Bilden der Blechpakete aufeinandergestapelt werden. It is generally known to form the component which receives the stator winding from one or more stator laminated cores. Those stator laminated cores are formed by segment laminations, which are put together to form rings and stacked on top of one another to form the laminated cores.
Am Stator ist zum Stützen der Statorblechpakete stets eine Stützkonstruktion vorgesehen worden, in der Regel als Schweiß- oder Gussbaugruppe, die die Statorblechpakete versteift. Die Stützkonstruktion umfasst einen Statortragring, an dem maschinenträgerseitig„untere“ Druckblechsegmente zu einem Ring angeordnet werden sowie antriebsseitig, d.h. auf einem der dem Rotor zugewandten Seite, „obere“ Druckblechsegmente zu einem Ring angeordnet werden, zwischen denen das Statorblechpaket ausgebildet wird. Zur Ausbildung des Statorblechpaketes wurden die einzelnen Segmentbleche auf Schachtelstangen aufgefädelt, die auf den unteren Druckblechsegmenten angeordnet sind. Das Auffädeln erfolgte gleichzeitig auf drei benachbarten Schachtelstangen. Nach dem Auffädeln wurden die oberen Druckblechsegmente auf dem gebildeten Statorblechpaket angeordnet. Mittels Stehbolzen wurde das Statorblechpaket verspannt und die unteren und oberen Druckblechsegmente mit dem Statortragring verschweißt. Das Auffädeln der Segmentbleche ist zeitaufwendig und die Schweißvorgänge zur Befestigung der unteren und oberen Druckblechsegmente bergen die Gefahr, dass Schweißpickel in einer die Statorwicklung aufnehmenden Nut übersehen wird, wodurch es zu einem Masseschluss kommen kann. Zudem behindert die beidseitige Verschweißung der Durchblechsegmente mit dem Statortragring einen Setzungsausgleich des Statorblechpaketes. A support structure has always been provided on the stator to support the stator laminated cores, usually as a welded or cast assembly, which stiffens the stator laminated cores. The support structure comprises a stator support ring, on which "lower" pressure plate segments are arranged to form a ring on the machine support side and on the drive side, i.e. on one side facing the rotor, “upper” pressure plate segments are arranged to form a ring, between which the stator plate stack is formed. To form the stator laminated core, the individual segment laminations were threaded onto box bars, which are arranged on the lower pressure laminate segments. The threading was carried out simultaneously on three adjacent box bars. After threading, the upper pressure plate segments were arranged on the stator plate package formed. The stator core was braced using stud bolts and the lower and upper pressure plate segments were welded to the stator support ring. The threading of the segment sheets is time-consuming and the welding processes for fastening the lower and upper pressure sheet segments harbor the risk that welding picks are overlooked in a groove receiving the stator winding, which can lead to a ground fault. In addition, the welding of the sheet metal segments to the stator support ring on both sides hinders settlement compensation of the stator sheet stack.
Vor diesem Hintergrund lag der Erfindung die Aufgabe zugrunde, die im Stand der Technik vorbekannten Nachteile möglichst weitgehend zu überwinden. Insbesondere lag der Erfindung die Aufgabe zugrunde, eine Möglichkeit zu finden, den Montageaufwand für Generatoren von Windenergieanlagen zu reduzieren. Against this background, the object of the invention was to overcome as far as possible the disadvantages known in the prior art. In particular, the invention was based on the object of finding a way of reducing the assembly outlay for generators of wind energy plants.
Die Erfindung löst die ihr zugrundeliegende Aufgabe, indem sie ein Segmentblech mit den Merkmalen von Anspruch 1 vorschlägt. Insbesondere schlägt die Erfindung vor, dass der dritte radiale Abschnitt zumindest zwei azimutal beabstandet angeordnete Ausnehmungen aufweist, die für eine formschlüssige Verbindung mit an einem Statortragring angeordneten profilierten Leisten ausgebildet sind. The invention solves the underlying problem by proposing a segment sheet with the features of claim 1. In particular, the invention proposes that the third radial section has at least two azimuthally spaced recesses which are designed for a positive connection with profiled strips arranged on a stator support ring.
Unter einem radialen Abschnitt wird erfindungsgemäß ein Abschnitt des Segmentblechs mit einer Ausdehnung in radialer Richtung verstanden. Unter azimutalem Abstand wird der Abstand in Umfangsrichtung bzw. Drehrichtung des Generators verstanden, der die Segmentbleche enthält. According to the invention, a radial section is understood to mean a section of the segment sheet with an expansion in the radial direction. The azimuthal distance is understood to mean the distance in the circumferential direction or direction of rotation of the generator which contains the segment sheets.
Die Erfindung folgt dem Ansatz, die zumindest zwei in dem Segmentblech ausgebildeten Ausnehmungen mit einer Kontur zu versehen, die zu der Kontur der profilierten Leisten komplementär ist. Die formschlüssige Verbindung der Segmentbleche mit an dem Statortragring angeordneten profilierten Leisten ermöglicht für deren Montage einen deutlich vereinfachten Einlegevorgang. Das gemäß dem Stand der Technik vorgesehene aufwendige und zeitintensive gleichzeitige Auffädeln auf die Schachtelstangen kann nun entfallen. Ein weiterer Vorteil der formschlüssigen Verbindung der Segmentbleche mit den Leisten an dem Statortragring besteht darin, dass durch eine abgewinkelte Ausgestaltung der Leisten eine Pfeilung in dem Statorblechpaket erreicht werden kann, ohne die Montierbarkeit negativ zu beeinflussen. Hierzu können die Leisten in axialer Richtung des Statortragrings gesehen zwei unter einem Winkel zueinander angeordnete Abschnitte aufweisen. Weiterhin kann durch die formschlüssige Verbindung der Segmentbleche mit an dem Statortragring angeordneten profilierten Leisten, insbesondere durch eine radiale Fixierung, dem Durchhängen des Blechpaktes gegenüber dem Statortragring insbesondere in der 12-Uhr-Position begegnet werden. The invention follows the approach of providing the at least two recesses formed in the segment sheet with a contour that is complementary to the contour of the profiled strips. The form-fitting connection of the segment sheets with profiled strips arranged on the stator support ring enables a significantly simplified insertion process for their assembly. The complex and time-consuming simultaneous threading on the box bars provided according to the prior art can now be omitted. Another advantage of the form-fitting connection of the segment sheets to the strips on the stator support ring is that an angled configuration of the strips allows an arrow in the stator sheet stack to be achieved without adversely affecting the ability to be assembled. For this purpose, the strips, viewed in the axial direction of the stator support ring, can have two sections arranged at an angle to one another. Furthermore, the form-fitting connection of the segment sheets with profiled strips arranged on the stator support ring, in particular by a radial fixation, can counteract the sagging of the sheet metal package relative to the stator support ring, particularly in the 12 o'clock position.
Bevorzugt kann die formschlüssige Verbindung zwischen dem Segmentblech und den Leisten als eine Feder-Nut-Verbindung ausgebildet sein. Der Vorgang der Montage wird durch die Ausgestaltung der formschlüssigen Verbindung Feder-Nut-Verbindung vereinfach und ist einfach automatisierbar. Preferably, the positive connection between the segment sheet and the strips can be designed as a tongue and groove connection. The assembly process is simplified by the design of the positive connection tongue and groove connection and is easy to automate.
Insbesondere können die zumindest zwei Ausnehmungen endseitig an dem Segmentblech ausgebildet sein und jeweils einen tangentialen nasenförmigen Vorsprung ausbilden, der formschlüssig mit einer korrespondierenden Vertiefung an den Leisten in Eingriff bringbar ist. Tangential wird hierin verstanden als senkrecht zu den radialen Abschnitten des Segmentblechs, und somit senkrecht zu einer auf den Krümmungsmittelpunkt der Segmentbleche bezogenen Radiallinie. Für die Montage kann der tangentiale nasenförmige Vorsprung des Segmentblechs mit einer korrespondierenden Vertiefung einer ersten Leiste durch Einlegen in Eingriff gebracht werden. Anschließend kann das Segmentblech einseitig angehoben, d.h. in axialer Richtung des Statortragrings bewegt werden. Daraufhin kann das einseitig angehobene Segmentblech radial in Richtung des Statortragrings geschwenkt werden, bis das Segmentblech an dem Statortragring anliegt. Im Anschluss daran kann das Segmentblech abgelegt werden, wobei der gegenüberliegend ausgebildete tangentiale nasenförmige Vorsprung des Segmentblechs mit einer korrespondierenden Vertiefung der nachfolgenden Leiste in Eingriff bringbar ist. In particular, the at least two recesses can be formed on the end of the segment sheet metal and each form a tangential nose-shaped projection which can be positively engaged with a corresponding recess on the strips. Tangential is understood here as perpendicular to the radial sections of the segment sheet, and thus perpendicular to a radial line related to the center of curvature of the segment sheet. The tangential nose-shaped projection of the segment plate with a corresponding recess can be used for assembly a first bar can be engaged by inserting. The segment plate can then be lifted on one side, ie moved in the axial direction of the stator support ring. The segment plate which has been lifted on one side can then be pivoted radially in the direction of the stator support ring until the segment plate rests on the stator support ring. Subsequently, the segment sheet can be put down, wherein the oppositely formed tangential nose-shaped projection of the segment sheet can be brought into engagement with a corresponding recess in the subsequent strip.
Vorzugsweise können die Leisten als Strangpressprofile ausgeführt sein, welche vorzugsweise zumindest partiell aus einem Leichtmetall bestehen. Die als Strangpressprofil ausgeführten Leisten lassen sich kostengünstig hersteilen. Bevorzugt sind die profilierten Leisten symmetrisch ausgestaltet. The strips can preferably be designed as extruded profiles, which preferably consist at least partially of a light metal. The strips, which are designed as extruded profiles, can be manufactured inexpensively. The profiled strips are preferably designed symmetrically.
Gemäß einer bevorzugten Ausführungsform können die Leisten einen hohlzylindrischen Abschnitt und einen quaderförmigen Abschnitt aufweisen. Die als Strangpressprofil ausgeführte Leiste kann als eine Kombination aus einem Rohrabschnitt und einem Rechteckprofil bestehen, wobei der Rohrabschnitt zur Hindurchführung eines Kühlmediums verwendet werden kann. According to a preferred embodiment, the strips can have a hollow cylindrical section and a cuboid section. The strip designed as an extruded profile can consist of a combination of a pipe section and a rectangular profile, the pipe section being able to be used to pass a cooling medium through.
Hierzu kann das Segmentblech an einem Ende eine tangentiale halbkreisförmige Ausnehmung aufweisen, deren Kontur mit der Kontur des hohlzylindrischen Abschnitts der Leiste korrespondiert, und an ihrem anderen Ende eine tangentiale, im Wesentlichen quaderförmige Ausnehmung aufweisen, deren Kontur mit der Kontur des quaderförmigen Abschnitts der Leiste korrespondiert. Die tangentiale halbkreisförmige Ausnehmung kann eine Hinterschneidung ausbilden. Das Segmentblech kann zunächst unter einem Winkel zu dem Statortragring geneigt auf den hohlzylindrischen Abschnitt der Leiste aufgeschoben werden. Anschließend kann das Segmentblech durch eine radial gerichtete Bewegung in Richtung des Statortragrings bewegt werden, bis das Segmentblech anliegt. Dadurch kann eine formschlüssige Fixierung des Segmentblechs in tangentialer und radialer Richtung bewirkt werden. For this purpose, the segment plate can have a tangential semicircular recess at one end, the contour of which corresponds to the contour of the hollow cylindrical section of the strip, and at its other end a tangential, essentially cuboid recess whose contour corresponds to the contour of the cuboid section of the strip . The tangential semicircular recess can form an undercut. The segment plate can first be pushed onto the hollow cylindrical section of the strip at an angle to the stator support ring. The segment sheet can then be moved in the direction of the stator support ring by a radially directed movement until the segment sheet abuts. This allows the segment sheet to be positively fixed in the tangential and radial directions.
Gemäß einer weiteren Ausführungsform kann in dem dritten Abschnitt zumindest eine radiale Ausnehmung angeordnet sein, die eine im Wesentlichen parallelogrammförmigen Kontur aufweist, und dass die profilierte Leiste einen schwalbenschwanzförmigen Querschnitt aufweist. Hierbei können aus den Segmentblechen gebildete Blechringe paarweise übereinander zu einer Segmentblechanordnung angeordnet sein, wobei ein unterer Blechring jeweils aus Segmentblechen gebildet ist, deren zumindest eine radiale Ausnehmung eineAccording to a further embodiment, at least one radial recess can be arranged in the third section, which has an essentially parallelogram-shaped contour and that the profiled strip has a dovetail-shaped cross section. Here, sheet metal rings formed from the segment sheets can be arranged in pairs one above the other to form a segment sheet arrangement, a lower sheet metal ring being formed in each case from segment sheets, the at least one radial recess of which is one
Hinterschneidung in einer ersten Umfangsrichtung aufweist, und der obere Blechring aus Segmentblechen gebildet ist, deren zumindest eine radiale Ausnehmung eineHas undercut in a first circumferential direction, and the upper sheet metal ring is formed from segment sheets, the at least one radial recess of which
Hinterschneidung in einer zu der ersten Umfangsrichtung entgegengesetzten zweiten Umfangsrichtung aufweist. Die Hinterschneidungen sind vorzugsweise dadurch geformt, dass die radialen Ausnehmungen als nichtorthogonale Parallelogramme geformt sind, besonders bevorzugt rautenförmig oder rhombenförmig. Aufgrund der wechselweisen Anordnung der Segmentbleche mit gegensinnig geneigten radialen Ausnehmungen übereinander kann dann in Kombination eine trapezoide Verbindung, d. h.Has undercut in a second circumferential direction opposite to the first circumferential direction. The undercuts are preferably shaped in that the radial recesses are shaped as non-orthogonal parallelograms, particularly preferably diamond-shaped or diamond-shaped. Due to the alternating arrangement of the segment sheets with radial recesses inclined in opposite directions one above the other, a trapezoidal connection, ie. H.
Schwalbenschwanzverbindung, gebildet werden, wobei gleichzeitig der Vorteil einer einfachen Einführung der einzelnen Segmentbleche erhalten bleibt. Diese verkanten sich aufgrund der„einseitigen“ Hinterschneidung bzw. des parallelogrammartigen Verlaufs der Ausnehmungen nur wenig oder gar nicht. Es kann dennoch eine Fixierung derDovetail connection are formed, while the advantage of a simple introduction of the individual segment sheets is retained. Due to the “one-sided” undercut or the parallelogram-like course of the recesses, these tilt only slightly or not at all. It can still fixate the
Segmentbleche in radialer und tangentialer Richtung erreicht werden. Innerhalb der jeweiligen Ausnehmung des Segmentblechs kann an einem Wandabschnitt, der die Ausnehmung in radialer Richtung begrenzt, ein sich in tangentialer Richtung erstreckender Vorsprung vorgesehen sein, welcher der Zentrierung des Segmentbleches gegenüber der von der Ausnehmung aufgenommenen Leiste dient. Segment sheets can be reached in the radial and tangential direction. A projection extending in the tangential direction can be provided on the wall section, which delimits the recess in the radial direction, within the respective recess of the segment plate and serves to center the segment plate with respect to the strip received by the recess.
Gemäß einer weiteren bevorzugten Ausführungsform kann in dem dritten Abschnitt zumindest eine radiale Ausnehmung ausgebildet sein, in der sich radial erstreckende, elastisch verformbare Halteabschnitte ausgebildet sind, die an ihren freien Ende Hinterschneidungen aufweisen, die mit der Leiste formschlüssig in Eingriff bringbar sind. Die vom Boden der Ausnehmung sich radial erstreckenden, elastisch verformbaren Halteabschnitte können auf die Leiste aufgeschoben werden, wenn das Segmentblech durch eine radial gerichtete Bewegung in Richtung des Statortragrings bewegt wird. Hierzu kann die an dem Statortragring befestigte Leiste eine sich in radialer Richtung verjüngende Kontur aufweisen, so dass die Halteabschnitte beim Aufschieben auf die Leiste in tangentialer Richtung aufgeweitet werden. An der Leiste können auf der dem Statortragring zugewandten Seite Nuten vorgesehen sein, in welche die Hinterschneidungen an den freien Enden der Halteabschnitte formschlüssig einrasten können. Hierdurch kann eine radiale Anpressung der das Segmentbleche an den Statortragring bewirkt werden, wodurch eine bessere Wärmeableitung erreicht wird. Vorteilhaft ist es, wenn in einem die Ausnehmung tangential begrenzenden Boden eine Aufnahme zentrisch angeordnet ist, wobei die Kontur der Aufnahme der Kontur des freien Endes der Leiste entspricht. Die Leiste kann abschnittsweise von der Aufnahme aufgenommen werden. Hierdurch kann eine verbesserte Zentrierung des auf die Leiste aufgeschobenen Segmentbleches erreicht werden. According to a further preferred embodiment, at least one radial recess can be formed in the third section, in which radially extending, elastically deformable holding sections are formed, which have undercuts at their free ends, which can be positively engaged with the bar. The elastically deformable holding sections, which extend radially from the bottom of the recess, can be pushed onto the strip if the segment plate is moved in the direction of the stator support ring by a radially directed movement. For this purpose, the bar fastened to the stator support ring can have a contour that tapers in the radial direction, so that the holding sections are widened in the tangential direction when pushed onto the bar. Grooves can be provided on the strip on the side facing the stator support ring, into which the undercuts can engage in a form-fitting manner at the free ends of the holding sections. This can bring about a radial pressing of the segment sheets onto the stator support ring, as a result of which better heat dissipation is achieved. It is advantageous if a receptacle is arranged centrally in a floor tangentially delimiting the recess, the contour of the receptacle corresponding to the contour of the free end of the strip. The bar can be taken up in sections from the holder. In this way, an improved centering of the segment sheet pushed onto the bar can be achieved.
Gemäß einer weiteren bevorzugten Ausführungsform kann in dem dritten Abschnitt zumindest eine radiale Ausnehmung ausgebildet sein, in der sich tangential erstreckende, elastisch oder plastisch verformbare Halteabschnitte ausgebildet sind, die als eine Art Kniehebelanordnung fungieren. Die freien Enden der Halteabschnitte können beim Aufschieben auf die profilierte Leiste mit korrespondierenden Vertiefungen in der Leiste abschnittsweise in Eingriff gebracht werden. Durch die radial gerichtete Bewegung in Richtung des Statortragrings werden die beim Aufschieben auf die Leiste formschlüssig in Eingriff gebrachten Halteabschnitte mitgenommen und über ihren Totpunkt hinwegbewegt. Hierzu können die Halteabschnitte mittels Fließgelenk an die radiale Ausnehmung begrenzenden Wänden angelenkt sein. According to a further preferred embodiment, at least one radial recess can be formed in the third section, in which tangentially extending, elastically or plastically deformable holding sections are formed, which function as a kind of toggle lever arrangement. The free ends of the holding sections can be brought into engagement in sections with corresponding depressions in the bar when pushed onto the profiled bar. Due to the radially directed movement in the direction of the stator support ring, the holding sections which are positively engaged when pushed onto the bar are carried along and moved past their dead center. For this purpose, the holding sections can be articulated to the walls delimiting the radial recess by means of a plastic hinge.
Die insbesondere radiale Fixierung der Segmentbleche aufgrund der formschlüssigen Verbindung mit den Leisten an dem Statortragring ist vorteilhaft, wenn es durch Setzung im Betrieb zu einer Abnahme der Pressung der Segmentbleche untereinander kommt. Ein, begünstigt durch den magnetischen Zug der Pole, vereinzelt auftretendes radiales Wandern eines Segmentbleches in den Luftspalt kann dadurch vermieden werden. The particular radial fixation of the segment sheets due to the positive connection with the strips on the stator support ring is advantageous if there is a decrease in the pressing of the segment sheets with one another due to settlement during operation. An occasional radial migration of a segment sheet into the air gap, favored by the magnetic pull of the poles, can be avoided in this way.
Die Erfindung wurde vorstehend unter Bezugnahme auf das Segmentblech erläutert. In einem weiteren Aspekt betrifft die Erfindung aber ebenso ein Statorblechpaket für einen Generator einer Windenergieanlage. Die Erfindung löst die ihr zugrundeliegende Aufgabe bei einem solchen Statorblechpaket, indem jenes mit den Merkmalen von Anspruch 12 ausgebildet ist. Die Erfindung schlägt vor, dass das Statorblechpaket eine Vielzahl von Segmentblechen aufweist, wobei mehrere Segmentbleche in einer Ebene so aneinander angeordnet sind, dass sie gemeinsam einen Blechring ausbilden, und mehrere Segmentbleche in den gebildeten Blechringen derart gestapelt sind, dass sie gemeinsam das Statorblechpaket ausbilden, wobei das Statorblechpaket einen ersten radialen Abschnitt aufweist, in welchem eine Vielzahl Nuten zur Aufnahme einer Statorwicklung vorgesehen sind, wobei die Nuten durch in den Segmentblechen vorgesehene Aussparungen gebildet sind, einen zweiten radialen Abschnitt, der radial benachbart zu dem ersten Abschnitt angeordnet ist, der ein Segment eines magnetischen Jochs des Generators bildet, sowie einen dritten radialen Abschnitt, der radial benachbart zu dem zweiten Abschnitt angeordnet ist, dadurch gekennzeichnet, dass die Segmentbleche nach einer vorstehend beschriebenen bevorzugten Ausführungsformen ausgebildet sind, wobei der dritte radiale Abschnitt zumindest zwei azimutal beabstandet angeordnete Ausnehmungen aufweist, die für eine formschlüssige Verbindung mit an einem Statortragring angeordneten profilierten Leisten ausgebildet sind. The invention was explained above with reference to the segment sheet. In a further aspect, however, the invention also relates to a stator laminated core for a generator of a wind turbine. The invention solves the problem on which it is based in such a stator lamination stack, in that the one with the features of claim 12 is formed. The invention proposes that the stator laminated core has a multiplicity of segment laminations, wherein a plurality of segment laminations are arranged on one another in one plane in such a way that they jointly form a laminated ring, and several segment laminations are stacked in the formed laminated rings in such a way that they together form the stator laminated core, wherein the stator laminated core has a first radial section, in which a plurality of grooves are provided for receiving a stator winding, the grooves being formed by recesses provided in the segment laminations, a second radial section, which is arranged radially adjacent to the first section, the one Segment of a magnetic yoke of the generator, and a third radial section that is radially adjacent to the is arranged second section, characterized in that the segment sheets are designed according to a preferred embodiment described above, wherein the third radial section has at least two azimuthally spaced recesses which are designed for a positive connection with profiled strips arranged on a stator support ring.
Dabei kann das Statorblechpaket zwischen zwei aus unteren Druckblechsegmenten und oberen Druckblechsegmenten gebildeten Ringen angeordnet sein, wobei die unteren Druckblechsegmente am Statortragring ortsfest angeordnet sind und die oberen Druckblechsegmente in axialer Richtung des Statortragrings verschiebbar sind. Hierbei können die unteren Druckblechsegmente in einer umlaufenden Nut in dem Statortragring angeordnet sein, wodurch diese in axialer Richtung des Statortragrings fixiert sind. Aufgrund der Verschiebbarkeit der oberen Druckblechsegmente in axialer Richtung des Statortragrings ist ein Nachspannen der durch Verspannungsmittel wie beispielsweise Stehbolzen, Gewindestangen oder dergleichen mit einer Vorspannung beaufschlagten Segmentbleche des Statorblechpaketes möglich. Insbesondere kann bei dieser Ausgestaltung auf den Montageschritt des Verschweißens verzichtet werden. The stator lamination stack can be arranged between two rings formed from lower pressure plate segments and upper pressure plate segments, the lower pressure plate segments being arranged in a stationary manner on the stator support ring and the upper pressure plate segments being displaceable in the axial direction of the stator support ring. The lower pressure plate segments can be arranged in a circumferential groove in the stator support ring, as a result of which they are fixed in the axial direction of the stator support ring. Due to the displaceability of the upper pressure plate segments in the axial direction of the stator support ring, it is possible to re-tension the segment plates of the stator plate stack which are pretensioned by means of tensioning means such as stud bolts, threaded rods or the like. In particular, the assembly step of welding can be dispensed with in this embodiment.
Die Erfindung ist vorstehend unter Bezugnahme auf das Segmentblech und das Statorblechpaket gemäß dem ersten und dem zweiten Aspekt der Erfindung beschrieben worden. In einem dritten Aspekt betrifft die Erfindung ferner einen Generator einer Windenergieanlage, insbesondere einen vielpoligen, langsam drehenden Synchron-The invention has been described above with reference to the segment plate and the stator plate stack according to the first and second aspects of the invention. In a third aspect, the invention further relates to a generator of a wind turbine, in particular a multi-pole, slowly rotating synchronous
Ringgenerator. Ring generator.
Die Erfindung löst die eingangs bezeichnete Aufgabe bei einem Generator der vorbezeichneten Art, indem der Generator einer Windenergieanlage, insbesondere ein langsam drehender Synchron-Ringgenerator, einen Generatorstator und einen relativ zu dem Generatorstator drehbar gelagerten Generatorrotor aufweist, wobei derThe invention solves the problem mentioned at the outset for a generator of the aforementioned type, in that the generator of a wind turbine, in particular a slowly rotating synchronous ring generator, a generator stator and a generator rotor rotatably mounted relative to the generator stator, the
Generatorstator wenigstens ein Statorblechpaket aufweist, in welchem eine Vielzahl von Nuten vorgesehen sind, in denen eine Statorwicklung aufgenommen ist, wobei der Generatorstator einen Statortragring aufweist, an dem in tangentialer Richtung Leisten angeordnet sind, wobei an den Leisten wenigstens ein Statorblechpaket mittels formschlüssiger Verbindung mit den Leisten verbunden ist. Generator stator has at least one stator laminated core, in which a plurality of grooves are provided, in which a stator winding is accommodated, the generator stator having a stator support ring, on which strips are arranged in the tangential direction, at least one stator laminated core on the strips by means of a positive connection with the Last is connected.
Bevorzugt ist das wenigstens eine Statorblechpaket nach einer der vorstehend beschriebenen bevorzugten Ausführungsformen ausgebildet. Die Erfindung betrifft in einem weiteren Aspekt eine Windenergieanlage. Die Erfindung löst die eingangs bezeichnete Aufgabe bei einer Windenergieanlage, insbesondere einer getriebelose Windenergieanlage, mit einem Turm, einer auf dem Turm drehbar angeordneten Gondel, einer drehbar an der Gondel gelagerten Nabe mit einer Anzahl von Rotorblättern, und einem Generator zur Bereitstellung elektrischer Energie, der einen mit der Nabe verbundenen Generatorrotor und einen mit der Gondel verbundenen Generatorstator aufweist, dadurch, dass der Generator nach einer der vorstehend beschriebenen bevorzugten Ausführungsformen ausgebildet ist. The at least one stator laminated core is preferably designed according to one of the preferred embodiments described above. In a further aspect, the invention relates to a wind turbine. The invention solves the problem mentioned at the outset in a wind turbine, in particular a gearless wind turbine, with a tower, a gondola rotatably arranged on the tower, a hub rotatably mounted on the gondola with a number of rotor blades, and a generator for providing electrical energy, has a generator rotor connected to the hub and a generator stator connected to the nacelle, in that the generator is designed according to one of the preferred embodiments described above.
Die Erfindung wird im Folgenden unter Bezugnahme auf die beigefügten Figuren anhand von Ausführungsbeispielen näher beschrieben. Es zeigen: The invention is described below with reference to the accompanying figures using exemplary embodiments. Show it:
Fig. 1 eine Windenergieanlage schematisch in einer perspektivischen Ansicht, 1 shows a wind turbine schematically in a perspective view,
Fig. 2 eine Gondel der Windenergieanlage gemäß Fig. 1 schematisch in einer teilgeschnittenen Ansicht, 2 shows a nacelle of the wind power plant according to FIG. 1 schematically in a partially sectioned view,
Fig. 3a eine schematische Darstellung einer Teilansicht eines Statortragrings mit einem maschineträgerseitig angeordneten unteren Druckblechsegment, 3a shows a schematic illustration of a partial view of a stator support ring with a lower pressure plate segment arranged on the machine support side,
Fig. 3b eine schematische Darstellung des Statortragrings gemäß Fig. 3a mit einem antriebsseitig angeordneten oberen Druckblechsegment, 3b is a schematic representation of the stator support ring according to FIG. 3a with an upper pressure plate segment arranged on the drive side,
Fig. 4 eine schematische Darstellung eines Segmentbleches, Fig. 5 schematisch eine Leiste in einer perspektivischen Ansicht (A) und in einer Fig. 4 is a schematic representation of a segment sheet, Fig. 5 schematically shows a bar in a perspective view (A) and in one
Draufsicht (B),  Top view (B),
Fig. 6 schematisch eine Teilansicht des Statortragrings gemäß Fig. 3a mit einer 6 schematically shows a partial view of the stator support ring according to FIG. 3a with a
Leiste gemäß einer zweiten Ausführungsform, wobei sich ein Segmentblech in einer an die Leiste angelegten Position (C) und einer an dem Statortragring angelegten Position (D) befindet, Fig. 7 schematisch eine Teilansicht des Statortragrings gemäß Fig. 3a mit einer  Bar according to a second embodiment, wherein a segment plate is in a position applied to the bar (C) and in a position applied to the stator support ring, FIG. 7 schematically shows a partial view of the stator support ring according to FIG
Leiste und zwei Segmentblechen gemäß einer dritten Ausführungsform, wobei die Segmentbleche in einer Explosionsansicht (C) und einer an dem Statortragring angelegten Position (D) dargestellt sind, Fig. 8 schematisch eine Teilansicht eines Segmentbleches und einer Leiste gemäß einer weiteren Ausführungsform, die am Statortragring angeordnet sind, Bar and two segment sheets according to a third embodiment, the segment sheets being shown in an exploded view (C) and in a position (D) applied to the stator support ring, 8 schematically shows a partial view of a segment plate and a strip according to a further embodiment, which are arranged on the stator support ring,
Fig. 9 schematisch eine Teilansicht des Segmentbleches gemäß Fig. 8 in einer bevorzugten Weiterbildung, Fig. 10 schematisch eine Teilansicht des Segmentbleches gemäß Fig. 9 in einer bevorzugten Weiterbildung, 9 schematically shows a partial view of the segment sheet according to FIG. 8 in a preferred development, FIG. 10 schematically shows a partial view of the segment sheet according to FIG. 9 in a preferred development,
Fig. 1 1 schematisch eine Teilansicht eines Segmentbleches und einer Leiste gemäß einer weiteren bevorzugten Ausführungsform in einer zu dem Statortragring beabstandeten Position, und Fig. 12 schematisch eine Teilansicht des Segmentbleches gemäß Fig. 1 1 in einer bevorzugten Weiterbildung. 11 schematically shows a partial view of a segment plate and a strip according to a further preferred embodiment in a position spaced apart from the stator support ring, and FIG. 12 schematically shows a partial view of the segment plate according to FIG. 11 in a preferred development.
Einander entsprechende Teile sind in allen Zeichnungsfiguren mit den gleichen Bezugszeichen versehen. Corresponding parts are provided with the same reference numerals in all drawing figures.
Fig. 1 zeigt eine Windenergieanlage 100 mit einem Turm 102 und einer Gondel 104. An der Gondel 104 ist ein Rotor 106 mit drei Rotorblättern 108 und einem Spinner 1 10 angeordnet. Der Rotor 106 wird im Betrieb durch den Wind in eine Drehbewegung versetzt und treibt dadurch einen Generator 1 (Fig. 2) in der Gondel 104 an. 1 shows a wind turbine 100 with a tower 102 and a nacelle 104. A rotor 106 with three rotor blades 108 and a spinner 110 is arranged on the nacelle 104. During operation, the rotor 106 is set into a rotary movement by the wind and thereby drives a generator 1 (FIG. 2) in the nacelle 104.
Die Gondel 104 der Windenergieanlage 100 gemäß Fig. 1 ist in Fig. 2 schematisch in einer teilgeschnittenen Ansicht gezeigt. Die Gondel 104 ist drehbar an dem Turm 102 montiert und mittels eines Azimutantriebs 1 12 in allgemein bekannter Weise angetrieben verbunden. In der Gondel 104 ist ein Maschinenträger 1 16 ebenfalls in allgemein bekannter Weise angeordnet, der einen Achszapfen 1 14 trägt. The nacelle 104 of the wind turbine 100 according to FIG. 1 is shown schematically in FIG. 2 in a partially sectioned view. The nacelle 104 is rotatably mounted on the tower 102 and connected in a generally known manner, driven by means of an azimuth drive 112. In the nacelle 104, a machine carrier 1 16 is also arranged in a generally known manner, which carries an axle journal 1 14.
Der Generator 1 weist einen Generatorstator 5 auf, der mittels des Achszapfens 1 14 an dem Maschinenträger 1 16 in der Gondel 104 befestigt ist. Andere, durch die Erfindung nicht ausgeschlossene Ausgestaltungsmöglichkeiten sehen beispielsweise vor, den Generatorstator 5 unmittelbar an den Maschinenträger 1 16 oder ein entsprechendes Bauteil der Gondel 104 anzubinden. Der Generator 1 gemäß Fig. 2 weist einen Generatorrotor 3 auf, der als Außenläufer konzipiert ist. Die Drehbewegung des Rotors 106 wird auf den Generatorrotor 3 übertragen. Alternative, vom Rahmen der Erfindung nicht ausgeschlossene Ausgestaltungsmöglichkeiten sehen beispielsweise auch einen als Innenläufer ausgestalteten Generatorrotor vor. The generator 1 has a generator stator 5, which is fastened to the machine carrier 1 16 in the nacelle 104 by means of the axle journal 1 14. Other design options, which are not excluded by the invention, provide, for example, to connect the generator stator 5 directly to the machine carrier 116 or a corresponding component of the nacelle 104. The generator 1 according to FIG. 2 has a generator rotor 3 which is designed as an external rotor. The rotational movement of the rotor 106 is transmitted to the generator rotor 3. Alternative design options not excluded from the scope of the invention also provide, for example, a generator rotor configured as an internal rotor.
Der Generatorrotor 3 ist drehfest mit der Nabe 106 verbunden. Der nähere Aufbau des Generatorstators 5 ist in Fig. 3a und 3b gezeigt. Der Generator 5 weist einen hohlzylindrischen Statorring 7 auf. Außerhalb des Statorrings 7, von diesem beabstandet durch einen Ringspalt, läuft der Generatorrotor 3. Der Statorring 7 ist mittels zweier Stützringe an einer Statoraufnahme befestigt. Die Statoraufnahme ist wiederum mit dem Achszapfen 1 14 verschraubt. Andere Befestigungsmöglichkeiten für den Stator 5 an dem Maschinenträger 1 16 liegen ebenfalls im Rahmen der Erfindung. Die Stützringe sind vergleichsweise dünnwandige Bleche, welche die Tragfähigkeit und mechanische Steifigkeit des Statorrings 7 im Wesentlichen unbeeinflusst lassen. Stattdessen ist der Statorring 7 selbsttragend ausgelegt. The generator rotor 3 is rotatably connected to the hub 106. The detailed structure of the generator stator 5 is shown in FIGS. 3a and 3b. The generator 5 has a hollow cylindrical stator ring 7. The generator rotor 3 runs outside the stator ring 7, spaced from it by an annular gap. The stator ring 7 is fastened to a stator receptacle by means of two support rings. The stator receptacle is in turn screwed to the journal 14. Other fastening options for the stator 5 on the machine carrier 116 are also within the scope of the invention. The support rings are comparatively thin-walled sheets, which leave the load-bearing capacity and mechanical rigidity of the stator ring 7 essentially unaffected. Instead, the stator ring 7 is designed to be self-supporting.
In dem Statortragring 7 ist eine Vielzahl von plattenförmigen Segmentblechen 21 (Fig. 4) angeordnet, die zu Blechringen aneinandergereiht sind und derart aufeinandergestapelt werden, dass wenigstens ein Statorblechpaket 15 entsteht. A large number of plate-shaped segment laminations 21 (FIG. 4) are arranged in the stator support ring 7, which are lined up to form sheet metal rings and are stacked on top of one another in such a way that at least one stator laminated core 15 is produced.
Fig. 3a zeigt eine schematische Darstellung einer Teilansicht des Statortragrings 7 mit einem maschinenträgerseitig angeordneten unteren Druckblechsegment 9. Das3a shows a schematic illustration of a partial view of the stator support ring 7 with a lower pressure plate segment 9 arranged on the machine support side
Druckblechsegment 9 ist ringsegmentförmig ausgeführt, d.h. es weist einen um eine Mittenachse gekrümmten kreisbogenförmigen Verlauf auf. Mehrere untere Druckblechsegmente 9 werden in eine umlaufende Nut im Statortragring 7 eingesteckt und aneinandergereiht, um einen geschlossenen Ring auszubilden. Die Breite der Nut entspricht dabei der Stärke der unteren Druckblechsegmente 9. Die unterenPressure plate segment 9 is designed in the form of a ring segment, i.e. it has an arcuate course curved around a central axis. A plurality of lower pressure plate segments 9 are inserted into a circumferential groove in the stator support ring 7 and strung together to form a closed ring. The width of the groove corresponds to the thickness of the lower pressure plate segments 9. The lower ones
Druckblechsegmente 9 werden mit einer Minustoleranz gefertigt, so dass sich beim Einstecken und Aneinanderreihen eine Lücke ausbildet, die der Summe der Teiltoleranzen der einzelnen unteren Druckblechsegmente 9 entspricht. Dies ermöglicht das Einstecken des letzten unteren Druckblechsegmentes 9 zwischen zwei benachbarte untere Druckblechsegmente 9. Nach dem Einstecken des letzten unterenPressure plate segments 9 are manufactured with a minus tolerance, so that a gap is formed when inserted and lined up, which corresponds to the sum of the partial tolerances of the individual lower pressure plate segments 9. This enables the last lower pressure plate segment 9 to be inserted between two adjacent lower pressure plate segments 9. After the last lower pressure plate segment has been inserted
Druckblechsegmentes 9 werden die Abstände zwischen den unterenPressure plate segment 9, the distances between the lower
Druckblechsegmenten 9 vergleichmäßigt. Die unteren Druckblechsegmente 9 weisen an ihrer dem Statortragring 7 zugewandten Seite azimutal beabstandet angeordnete radiale Ausnehmungen 1 1 auf. An dem Statortragring 7 werden vertikal zu den Druckblechsegmente 9 orientierte Leisten 13 befestigt, die sich abschnittsweise in die Ausnehmungen 1 1 erstrecken. Pressure plate segments 9 equalized. The lower pressure plate segments 9 have, on their side facing the stator support ring 7, azimuthally spaced radial recesses 11. On the stator support ring 7 are vertical to the Pressure plate segments 9 oriented strips 13 attached, which extend in sections into the recesses 1 1.
Fig. 3b zeigt eine schematische Darstellung des Statortragrings 7 gemäß Fig. 3a mit antriebsseitig, d.h. auf einem der dem Rotor 106 zugewandten Seite, angeordneten oberen Druckblechsegment 17. Mehrere obere Druckblechsegmente 9 werden aneinandergereiht, um einen Ring auszubilden. Hierzu werden die oberen Druckblechsegmente 17 auf die Leisten 13 aufgesteckt. Die oberen Druckblechsegmente 17 weisen hierzu azimutal angeordnete radiale Ausnehmungen auf, welche formschlüssig mit den profilierten Leisten 13 in Eingriff bringbar sind. Die oberen Druckblechsegmente 17 können im Wesentlichen baugleich mit den unteren Druckblechsegmenten 9 ausgeführt sein. Zwischen den unteren Druckblechsegmenten 9 und den oberen Druckblechsegmenten 17 befindet sich das Statorblechpaket 15. Sowohl die unteren Druckblechsegmente 9 als auch die oberen Druckblechsegmenten 17 weisen eine Vielzahl von korrespondierenden radialen Aussparungen 19 auf, die zur Aufnahme einer Statorwicklung angepasst sind. Während die in der umlaufenden Nut des Statortragrings 7 angeordneten unteren Druckblechsegmenten 9 in axialer Richtung des Statortragrings 7 fixiert sind, sind die oberen Druckblechsegmente 17 in axialer Richtung verschiebbar. Die unteren Druckblechsegmente 9 und die oberen Druckblechsegmenten 17 bilden eine Art Festlager- Loslager-Anordnung, zwischen denen das Statorblechpaket 15 angeordnet ist. Das Statorblechpaket 15 besteht aus einer Vielzahl von Segmentblechen 21 , von denen eines schematisch in Fig. 4 dargestellt ist. Das in Fig. 4 gezeigte Segmentblech 21 ist ringsegmentförmig ausgeführt, d.h. es weist einen um eine Mittenachse gekrümmten kreisbogenförmigen Verlauf auf. Das Segmentblech 21 weist einen ersten radialen Abschnitt 23 auf, in dem eine Vielzahl von Aussparungen 29 eingebracht sind. Die Aussparungen 29 sind zur Aufnahme einer Statorwicklung angepasst. Fig. 3b shows a schematic representation of the stator support ring 7 according to Fig. 3a with the drive side, i.e. on an upper pressure plate segment 17 arranged on the side facing the rotor 106. A plurality of upper pressure plate segments 9 are lined up to form a ring. For this purpose, the upper pressure plate segments 17 are pushed onto the strips 13. For this purpose, the upper pressure plate segments 17 have azimuthally arranged radial recesses which can be positively engaged with the profiled strips 13. The upper pressure plate segments 17 can be constructed essentially identically to the lower pressure plate segments 9. The stator lamination stack 15 is located between the lower pressure plate segments 9 and the upper pressure plate segments 17. Both the lower pressure plate segments 9 and the upper pressure plate segments 17 have a plurality of corresponding radial recesses 19 which are adapted to accommodate a stator winding. While the lower pressure plate segments 9 arranged in the circumferential groove of the stator support ring 7 are fixed in the axial direction of the stator support ring 7, the upper pressure plate segments 17 are displaceable in the axial direction. The lower pressure plate segments 9 and the upper pressure plate segments 17 form a type of fixed bearing / floating bearing arrangement, between which the stator plate stack 15 is arranged. The stator laminated core 15 consists of a plurality of segment laminations 21, one of which is shown schematically in FIG. 4. The segment sheet 21 shown in Fig. 4 is ring segment-shaped, i.e. it has an arcuate course curved around a central axis. The segment plate 21 has a first radial section 23, in which a plurality of cutouts 29 are made. The cutouts 29 are adapted to receive a stator winding.
Benachbart zu dem ersten radialen Abschnitt 23 befindet sich ein zweiter radialer Abschnitt 25, der ein Segment des magnetischen Jochs des Generatorstators 5 ausbildet. Benachbart zu dem zweiten radialen Abschnitt 25 befindet sich ein dritter radialer Abschnitt 27. Der dritte radiale Abschnitt 27 weist eine Vielzahl von Durchgangsöffnungen 31 auf, welche der Durchführung von Verspannmitteln dienen. Die Verspannmittel können beispielsweise als Gewindestangen, Schrauben, Spannseile und dergleichen ausgeführt sein. Das Segmentblech 21 ist in seinem dritten Abschnitt 27 mit zumindest einer radialen Ausnehmung 33 versehen, die einen im Wesentlichen U-förmigen Querschnitt aufweist. Im dargestellten Ausführungsbeispiel sind zwei radiale Ausnehmungen 33 in dem dritten Abschnitt 27 eingebracht. Die Abmessungen der Ausnehmungen 33 sind derart gewählt, dass die jeweilige Leiste 13 von der Ausnehmung 33 berührungslos umschlossen ist. A second radial section 25, which forms a segment of the magnetic yoke of the generator stator 5, is located adjacent to the first radial section 23. A third radial section 27 is located adjacent to the second radial section 25. The third radial section 27 has a multiplicity of through openings 31, which are used to carry out tensioning means. The tensioning means can be designed, for example, as threaded rods, screws, tensioning cables and the like. In its third section 27, the segment plate 21 is provided with at least one radial recess 33 which has an essentially U-shaped cross section. In the illustrated embodiment, there are two radial ones Recesses 33 introduced in the third section 27. The dimensions of the recesses 33 are selected such that the respective strip 13 is enclosed by the recess 33 without contact.
In tangentialer Richtung weist der dritte Abschnitt 27 an seinen freien Enden jeweils einen profilierten Vorsprung 35 auf, der in eine endseitig ausgebildete radiale Ausnehmung 36 hineinragt. Der jeweilige Vorsprung 35 ist konvex ausgeführt. Insbesondere sind die Vorsprünge 35 nasenförmig ausgeführt. Die Vorsprünge 35 befinden sich in montierter Position in formschlüssigem Eingriff mit den Leisten 13, zwischen denen das jeweilige Segmentblech 21 montiert ist. Hierzu weisen die Leisten 13 bogenförmige Vertiefungen 37 auf, die eine mit den Vorsprüngen 35 korrespondierende Form und Dimensionierung aufweisen. In the tangential direction, the third section 27 has a profiled projection 35 at its free ends, which protrudes into a radial recess 36 formed at the end. The respective projection 35 is convex. In particular, the projections 35 are designed nose-shaped. The projections 35 are in the assembled position in positive engagement with the strips 13, between which the respective segment plate 21 is mounted. For this purpose, the strips 13 have arcuate depressions 37 which have a shape and dimension corresponding to the projections 35.
Fig. 5 zeigt schematisch eine Leiste 13 in einer perspektivischen Teilansicht (A) und in einer Draufsicht (B). Die Leiste 13 ist in, insbesondere äquidistanten, Abständen mit Durchgangsbohrungen 39 versehen, die der Aufnahme von Schrauben oder dergleichen zur Befestigung der Leiste 13 an dem Statortragring 7 dienen. Wie aus der Ansicht (B) ersichtlich, ist die Leiste 13 beidseitig mit bogenförmige Vertiefungen 37 ausgeführt. Die bogenförmigen Vertiefungen erstrecken sich tangential zu dem Statortragring 7. In die jeweilige bogenförmige Vertiefung 37 greifen die jeweiligen Vorsprüngen 35 einander zugewandter Segmentbleche 21 formschlüssig ein. Die Leisten 13 bestehen vorzugsweise aus einem Leichtmetall oder einer Leichtmetalllegierung, insbesondere Aluminium oder dergleichen. Die Leisten 13 sind bevorzugt als Strang pressprofile ausgeführt. Fig. 5 shows schematically a bar 13 in a perspective partial view (A) and in a top view (B). The strip 13 is provided, in particular at equidistant intervals, with through-bores 39, which are used to hold screws or the like for fastening the strip 13 to the stator support ring 7. As can be seen from view (B), the strip 13 is designed on both sides with arcuate depressions 37. The arcuate depressions extend tangentially to the stator support ring 7. The respective projections 35 of segment plates 21 facing each other engage in the respective arcuate depression 37 in a form-fitting manner. The strips 13 are preferably made of a light metal or a light metal alloy, in particular aluminum or the like. The strips 13 are preferably designed as extruded profiles.
Für den Aufbau des Statorblech paketes 15 werden die Segmentbleche 21 zur Ausbildung eines geschlossenen Blechringes aneinandergereiht. Nachfolgend wird die Anordnung der Segmentbleche 21 im Uhrzeigersinn beschrieben. Aufgrund der Symmetrie der Segmentbleche 21 sowie der Leisten 13 ist die Anordnung der Segmentbleche 21 im Gegenuhrzeigersinn in analoger Weise durchführbar. For the construction of the stator laminated core 15, the segment laminations 21 are lined up to form a closed laminated ring. The arrangement of the segment plates 21 in the clockwise direction is described below. Due to the symmetry of the segment sheets 21 and the strips 13, the arrangement of the segment sheets 21 in the counterclockwise direction can be carried out in an analogous manner.
In einem ersten Montageschritt wird das jeweilige Segmentblech 21 des Blechringes mit einem seiner nasenförmigen Vorsprünge 35 in die bogenförmige Vertiefung 37 einer Leiste 13, die einer im Uhrzeigersinn benachbarten Leiste 13 zugewandt ist, eingelegt. Dabei wird der tangentiale Vorsprung 35 an dem gegenüberliegenden Ende des Segmentbleches 21 radial beabstandet zum Statortragring 7 gehalten. In einem zweiten Montageschritt wird das Segmentblech 21 an seinem frei beweglichen Ende, welches nicht mit der Leiste 13 in Eingriff steht, angehoben, d.h. in axialer Richtung bewegt, so dass das Segmentblech 21 anschließend kollisionsfrei in Richtung der Statortragrings 7 und der im Uhrzeigersinn gesehen benachbarten Leiste 13 schwenkbar ist. Zum Abschluss wird in einem dritten Montageschritt das Segmentblech 21 abgelegt, wobei der Vorsprung 35 mit der bogenförmige Vertiefung 37 der im Uhrzeigersinn benachbarten Leiste 13 zugleich in formschlüssig Eingriff gebracht wird. In a first assembly step, the respective segment sheet 21 of the sheet metal ring is inserted with one of its nose-shaped projections 35 into the arcuate recess 37 of a bar 13 which faces a bar 13 which is adjacent in the clockwise direction. Here, the tangential projection 35 is held at the opposite end of the segment plate 21 radially spaced from the stator support ring 7. In a second assembly step, the segment plate 21 is raised at its freely movable end, which is not in engagement with the strip 13, that is, moved in the axial direction, so that the The segment plate 21 can then be pivoted without collision in the direction of the stator support ring 7 and the strip 13, which is seen in the clockwise direction. Finally, in a third assembly step, the segment plate 21 is put down, the projection 35 being brought into positive engagement with the arcuate depression 37 of the bar 13 adjacent in the clockwise direction.
Nachdem der erste Blechring aus Segmentblechen 21 zwischen den Leisten 13 eingelegt wurde, wird ein zweiter Blechring in gleicher Weise durch das Einlegen der Segmentbleche 21 zwischen den Leisten 13 auf dem ersten Blechring aufgebaut. Dabei wird die Anordnung der Segmentbleche 21 mit einem Versatz von einem Leistenabstand gegenüber den Segmentblechen 21 des ersten Blechringes vorgenommen. Vorzugsweise entspricht ein Leistenabstand einem Versatz von etwa 5°. Ein dritter Blechring wird durch das Einlegen der Segmentbleche 21 mit einem Versatz von zwei Leistenabständen gegenüber dem ersten Blechring auf dem zweiten Blechring aufgebaut. Die Anordnung der Segmentbleche 21 eines vierten Blechringes entspricht wieder des ersten Blechrings, weist somit keinen Versatz auf. Diese wechselweise Schichtung wird bis zum Erreichen der gewünschten Höhe des Statorblech paketes 15 fortgeführt. Zum Abschluss werden die oberen Druckblechsegmente 17 auf die oberste Lage der Segmentbleche 21 des Statorblechpaketes 15 aufgelegt und mittels Stehbolzen, die durch die Durchgangsöffnungen 31 in den Segmentblechen 21 hindurchführbar sind, verschraubt und vorgespannt. Aufgrund der axialen Verschiebbarkeit der oberen Druckblechsegmente 17 können diese der Vorspannung der Stehbolzen folgen. Ein späteres Nachziehen der Stehbolzen, um einer im Betrieb des Generators 1 durch Setzung der Segmentbleche 21 bedingten Abnahme der Pressung zu begegnen, wirkt direkt auf Pressung der Segmentbleche 21. Fig. 6 zeigt schematisch eine Teilansicht des Statortragrings 7 gemäß Fig. 3a mit einer Leiste 41 gemäß einer zweiten Ausführungsform, wobei sich ein Segmentblech 47, von dem nur der erste Abschnitt 27 dargestellt ist, in einer an die Leiste 41 angelegten Position (C) und einer an dem Statortragring 7 angelegten Position (D) befindet. Die als Strangpressprofil ausgeführte Leiste 41 umfasst einen hohlzylindrischen bzw. rohrförmigen Abschnitt 43 sowie einen quaderförmigen Abschnitt 45. Der hohlzylindrische Abschnitt 43 kann innerhalb des Stators 5 für Kühlzwecke verwendet werden. Hierzu kann ein, vorzugsweise flüssiges, Kühlmedium durch den hohlzylindrischen Abschnitt 43 der an dem Statortragring 7 angeordneten Leiste 41 geleitet werden. Zur formschlüssigen Verbindung des Segmentblechs 47 mit der Leiste 41 weist das Segmentblech 47 eine tangentiale halbkreisförmige Ausnehmung 49 auf, deren Radius dem Außenradius des hohlzylindrischen Abschnittes 43 entspricht. Das Segmentblech 47 wird unter einem Winkel zur Mantelfläche des Statortragrings 7 angelegt und anschließend in dessen Richtung verschwenkt, bis das Segmentblech 47 an der Mantelfläche des Statortragrings 7 anliegt. Vorzugsweise sind an gegenüberliegenden Seiten der Segmentbleche 47 jeweils miteinander korrespondierende Formschlusselemente ausgebildet, die in angelegter Position der Segmentbleche eine Fixierung an einander bewirken. An dem der halbkreisförmigen Ausnehmung 49 gegenüberliegenden Ende des Segmentbleches 47 kann eine der Kontur des quaderförmigen Abschnitt 45 entsprechende Ausnehmung ausgebildet sein. Das Einlegen des Segmentbleches 47 erfolgt analog der weiter oben beschriebenen Vorgehensweise. After the first sheet metal ring of segment sheets 21 has been inserted between the strips 13, a second sheet metal ring is constructed in the same way by inserting the segment sheets 21 between the strips 13 on the first sheet metal ring. The arrangement of the segment sheets 21 is carried out with an offset of one bar spacing relative to the segment sheets 21 of the first sheet metal ring. A bar spacing preferably corresponds to an offset of approximately 5 °. A third sheet metal ring is built up on the second sheet metal ring by inserting the segment sheets 21 with an offset of two strip spacings with respect to the first sheet metal ring. The arrangement of the segment sheets 21 of a fourth sheet metal ring again corresponds to the first sheet metal ring, and thus has no offset. This alternate stratification is continued until the desired height of the stator laminate 15 is reached. Finally, the upper pressure plate segments 17 are placed on the uppermost layer of the segment plates 21 of the stator plate stack 15 and are screwed and pretensioned by means of stud bolts which can be passed through the through openings 31 in the segment plates 21. Due to the axial displaceability of the upper pressure plate segments 17, these can follow the pretensioning of the stud bolts. A subsequent tightening of the stud bolts in order to counteract a decrease in the pressure caused by the setting of the segment plates 21 during operation of the generator 1 acts directly on pressing the segment plates 21. FIG. 6 schematically shows a partial view of the stator support ring 7 according to FIG. 3a with a strip 41 according to a second embodiment, wherein a segment plate 47, of which only the first section 27 is shown, is in a position (C) applied to the strip 41 and a position (D) applied to the stator support ring 7. The strip 41 designed as an extruded profile comprises a hollow cylindrical or tubular section 43 and a cuboid section 45. The hollow cylindrical section 43 can be used within the stator 5 for cooling purposes. For this purpose, a, preferably liquid, cooling medium can be passed through the hollow cylindrical section 43 of the strip 41 arranged on the stator support ring 7. For the positive connection of the segment plate 47 to the bar 41, the segment plate 47 has a tangential semicircular recess 49, the radius of which is the outer radius of the corresponds to hollow cylindrical portion 43. The segment plate 47 is placed at an angle to the lateral surface of the stator support ring 7 and then pivoted in its direction until the segment plate 47 bears against the lateral surface of the stator support ring 7. Form-locking elements corresponding to one another are preferably formed on opposite sides of the segment sheets 47, which bring about a fixation to one another in the applied position of the segment sheets. At the end of the segment plate 47 opposite the semicircular recess 49, a recess corresponding to the contour of the cuboid section 45 can be formed. The segment plate 47 is inserted analogously to the procedure described above.
Fig. 7 zeigt schematisch eine Teilansicht des Statortragrings 7 gemäß Fig. 3a mit einer Leiste 51 und einer Teilansicht zweier Segmentblechen 53, 55 gemäß einer dritten Ausführungsform, wobei die Segmentbleche 53, 55 in einer Explosionsansicht (C) und einer an dem Statortragring 7 angelegten Position (D) dargestellt sind. Die profilierte Leiste 51 weist einen trapezförmigen Querschnitt auf, welcher sich zum Statortragring 7 hin verjüngt. Das Segmentblech 53 und das Segmentblech 55 weisen in ihrem jeweiligen dritten Abschnitt 27 zumindest eine Ausnehmung 59 bzw. 61 auf, deren Kontur im Wesentlichen der Form eines Parallelogramms entspricht. Die zumindest eine parallelogrammförmige Ausnehmung 59 des Segmentbleches 53 ist in dem gezeigten Ausführungsbeispiel nach links geneigt, während die parallelogrammförmigeFIG. 7 schematically shows a partial view of the stator support ring 7 according to FIG. 3a with a bar 51 and a partial view of two segment sheets 53, 55 according to a third embodiment, the segment sheets 53, 55 in an exploded view (C) and one applied to the stator support ring 7 Position (D) are shown. The profiled strip 51 has a trapezoidal cross section, which tapers towards the stator support ring 7. The segment plate 53 and the segment plate 55 have in their respective third section 27 at least one recess 59 or 61, the contour of which essentially corresponds to the shape of a parallelogram. The at least one parallelogram-shaped recess 59 of the segment plate 53 is inclined to the left in the exemplary embodiment shown, while the parallelogram-shaped one
Ausnehmung 61 des Segmentbleches 55 gegensinnig nach rechts geneigt ist. Im jeweiligen zweiten Abschnitt der Segmentbleche 53 und 55 ist jeweils zumindest eine Durchgangsbohrung 63 angeordnet, welche der Aufnahme einer Gewindestange 57 oder eines vergleichbaren Verspannmittels dient. Die Ansicht (F) gemäß Fig. 7 zeigt die paarweise übereinander angeordnetenRecess 61 of the segment plate 55 is inclined in the opposite direction to the right. In the respective second section of the segment sheets 53 and 55, at least one through hole 63 is arranged, which serves to receive a threaded rod 57 or a comparable bracing means. The view (F) according to FIG. 7 shows the pairs arranged one above the other
Segmentbleche 53, 55 in ihrer an dem Statortragring 7 angelegten Position. Die parallelogrammförmige Ausführung der wenigstens einen Ausnehmungen 59 bzw. 61 ermöglicht es, das Segmentblech 53 bzw. 55 durch eine im Wesentlichen radial gerichtete Bewegung auf die Leiste 51 an dem Statortragring 7 aufzuschieben. Die jeweilige gegensinnig orientierte Hinterschneidung der Ausnehmung 59 bzw. 61 wird dabei mit der Leiste 51 abschnittsweise formschlüssig in Eingriff gebracht. In dem in Fig. 7 dargestellten Ausführungsbeispiel ist das Segmentblech 53 unterhalb des Segmentbleches 55 angeordnet. Eine umgekehrte Anordnung ist ebenfalls denkbar. Für eine Fixierung der paarweise angeordneten Segmentbleche 53 und 55 relativ zueinander und gegenüber der Leiste 51 wird die Gewindestange 57 in die Durchgangsbohrung 63 in den Segmentblechen 53, 55 eingeführt. Der Aufbau des Statorblechpaketes 15 erfolgt in analoger Weise wie weiter oben bereits beschrieben wurde. Für den Aufbau des Statorblech paketes 15 werden die Segmentbleche 53 bzw. 55 zur Ausbildung eines des Blechringes jeweils aneinandergereiht. Im Unterschied zu der weiter oben beschriebenen Ausführungsform des Segmentblechs 21 werden für den jeweiligen Blechring wechselweise nur die Segmentbleche 53 oder nur die Segmentbleche 55 verwendet. Durch die wechselweise Anordnung der Segmentbleche 53 und 55 übereinander, welche die gegensinnig orientierten Hinterschneidungen an den Ausnehmungen 59 bzw. 61 aufweisen, wird mit der Leiste 51 eine Art Schwalbenschwanzverbindung ausgebildet. Segment plates 53, 55 in their position applied to the stator support ring 7. The parallelogram-shaped design of the at least one recesses 59 and 61 makes it possible to push the segment plate 53 or 55 onto the bar 51 on the stator support ring 7 by an essentially radially directed movement. The respective oppositely oriented undercut of the recess 59 or 61 is brought into engagement with the bar 51 in a form-fitting manner in sections. In the exemplary embodiment shown in FIG. 7, the segment plate 53 is arranged below the segment plate 55. A reverse arrangement is also conceivable. For fixing the paired segment sheets 53 and 55 relative to each other and opposite the bar 51, the threaded rod 57 is inserted into the through hole 63 in the segment sheets 53, 55. The structure of the stator laminated core 15 takes place in an analogous manner to that which has already been described above. For the construction of the stator laminated core 15, the segment laminations 53 and 55 are strung together to form one of the laminated rings. In contrast to the embodiment of the segment sheet 21 described above, only the segment sheets 53 or only the segment sheets 55 are used alternately for the respective sheet metal ring. Due to the alternating arrangement of the segment plates 53 and 55 one above the other, which have the oppositely oriented undercuts on the recesses 59 and 61, a type of dovetail connection is formed with the strip 51.
Fig. 8 zeigt eine schematisch eine Teilansicht eines Segmentbleches 65 und einer Leiste 67 gemäß einer weiteren Ausführungsform, die an dem Statortragring 7 angeordnet sind. Die Leiste 67 ist mittels einer Schraubverbindung 69 an dem an Statortragring 7 lösbar befestigt. Der Aufbau des ersten Abschnitts 23 und des zweiten Abschnitts 25 unterscheidet sich nicht von dem Aufbau der weiter oben beschriebenen Ausführungsform des Segmentblechs 21. Der dritte radiale Abschnitt 27 weist eine Vielzahl von Durchgangsöffnungen 31 auf, welche der Durchführung von Verspannmitteln dienen. In vorzugsweise äquidistanten Abständen sind zumindest zwei radiale Ausnehmungen 71 in dem dritten Abschnitt 27 angeordnet, die auf ihrer dem Statortragring 7 zugewandten Seite offen ausgeführt sind. Eine solche Ausnehmung 71 ist in Fig. 8 gezeigt. 8 shows a schematic partial view of a segment plate 65 and a strip 67 according to a further embodiment, which are arranged on the stator support ring 7. The strip 67 is fastened by means of a screw connection 69 to the stator support ring 7 in a detachable manner. The structure of the first section 23 and the second section 25 does not differ from the structure of the embodiment of the segment sheet 21 described above. The third radial section 27 has a multiplicity of through openings 31, which serve for the implementation of tensioning means. At least two radial recesses 71 are arranged in the third section 27 at preferably equidistant intervals, which are open on their side facing the stator support ring 7. Such a recess 71 is shown in FIG. 8.
Die Leiste 67 weist einen im Wesentlichen trapezförmigen Querschnitt auf. Im Sockelbereich der Leiste 67, mit welchem die Leiste 67 an dem Statortragring 7 anliegt, sind beidseitig Nuten 73 vorgesehen. The strip 67 has a substantially trapezoidal cross section. Grooves 73 are provided on both sides in the base region of the strip 67, with which the strip 67 rests on the stator support ring 7.
Die nach oben offenausgeführte Ausnehmung 71 wird radial durch Wände 85 und tangential durch einen Boden 83 begrenzt. Die Ausnehmung 71 weist in ihrem Boden 83 eine der Kontur des freien Endes der Leiste 67 entsprechende Aufnahme 75 auf. Die Aufnahme 75 ist zentrisch in der Ausnehmung 71 angeordnet. In die Aufnahme 75 dringt das freie Ende der Leiste 67 abschnittsweise ein. Benachbart zu der Aufnahme 75 sind zwei elastisch verformbare Halteabschnitte 77 in dem dritten Abschnitt 27 ausgebildet, die sich ausgehend vom Boden 83 der Ausnehmung 71 radial erstrecken. Die Halteabschnitte 77 werden durch Ausstanzen ausgebildet. Die beiden Halteabschnitt 77 sind jeweils unter einem Winkel geneigt zum Boden 83 der Ausnehmung 71 angeordnet und begrenzen eine Öffnung. An den Enden der Halteabschnitte 77 weisen diese jeweils einen tangentialen Absatz 79 auf, der in die jeweilige Nut 73 an der Leiste 67 eingreift. The upwardly open recess 71 is delimited radially by walls 85 and tangentially by a floor 83. The recess 71 has in its bottom 83 a receptacle 75 corresponding to the contour of the free end of the bar 67. The receptacle 75 is arranged centrally in the recess 71. The free end of the strip 67 penetrates into the receptacle 75 in sections. Adjacent to the receptacle 75, two elastically deformable holding sections 77 are formed in the third section 27, which extend radially from the bottom 83 of the recess 71. The holding portions 77 are formed by punching out. The two holding sections 77 are each inclined at an angle to the bottom 83 of the recess 71 and limit an opening. At the ends of the holding sections 77 they each have a tangential shoulder 79 which engages in the respective groove 73 on the bar 67.
Zur Anordnung an dem Statortragring 7 wird das Segmentblech 65 gegenüber den Leisten 67 ausgerichtet, so dass die Halteabschnitte 77 im Wesentlichen den Leisten 67 gegenüberliegend positioniert sind. Durch eine Bewegung in radialer Richtung auf den Statortragring 7 zu, werden die Leisten 67 durch die Öffnung zwischen den Halteabschnitte 77 eingeführt. Dabei werden die elastisch verformbaren Halteabschnitte 77 aufgrund der Trapezform der Leiste 67 des seitlich auseinandergedrückt. Spätestens mit dem Anliegen der Leiste 67 in der Aufnahme 75 am Boden der Ausnehmung 71 befinden sich die Absätze 79 an den Halteabschnitten 77 auf der Höhe der jeweiligen Nut 73, in welche die Absätze 79 aufgrund der Rückstellkraft formschlüssig eingreifen. Die Aufnahme 75 am Boden 83 der Ausnehmung 71 und die beiden Halteabschnitte 77 bewirken eine Zentrier- und Rastfunktion bei der Montage des Segmentbleches 65. Fig. 9 zeigt schematisch eine Teilansicht des Segmentbleches 65 gemäß Fig. 8 in einer bevorzugten Weiterbildung. Im Unterschied zu der Ausgestaltung der elastisch verformbaren Halteabschnitte 77 gemäß der Fig. 8 sind in der Ausnehmung 71 in dem dritten Abschnitt 27 einander gegenüberliegende, elastisch verformbareFor arrangement on the stator support ring 7, the segment sheet metal 65 is aligned with the strips 67, so that the holding sections 77 are essentially positioned opposite the strips 67. By moving in a radial direction towards the stator support ring 7, the strips 67 are inserted through the opening between the holding sections 77. The elastically deformable holding sections 77 are pressed apart laterally due to the trapezoidal shape of the strip 67. At the latest when the ledge 67 bears in the receptacle 75 at the bottom of the recess 71, the shoulders 79 are located on the holding sections 77 at the level of the respective groove 73, into which the shoulders 79 engage in a form-fitting manner due to the restoring force. The receptacle 75 on the bottom 83 of the recess 71 and the two holding sections 77 bring about a centering and latching function during the assembly of the segment sheet 65. FIG. 9 schematically shows a partial view of the segment sheet 65 according to FIG. 8 in a preferred development. In contrast to the configuration of the elastically deformable holding sections 77 according to FIG. 8, the elastically deformable are located in the recess 71 in the third section 27
Halteabschnitte 81 ausgebildet, die von Wandabschnitten 85 ausgehen, welche die Ausnehmung 71 seitlich begrenzen, und sich abschnittsweise in tangentialer Richtung der Ausnehmung 71 erstrecken. Die beiden Halteabschnitte 81 weisen einen im Wesentlichen U-förmigen Verlauf auf. Am äußeren Ende von einander zugewandten Schenkeln 87 der Halteabschnitte 81 , welche die Zuführöffnung für die der Leiste 67 begrenzen, ist jeweils ein Absatz 79 angeordnet, der in die jeweilige Nut 73 an der Leiste 67 eingreift. Fig. 10 zeigt schematisch eine Teilansicht des Segmentbleches 65 gemäß Fig. 9 in einer bevorzugten Weiterbildung. Gemäß dieser Weiterbildung sind in der jeweiligen Ausnehmung 71 zwei einander gegenüberliegende, elastisch verformbarenHolding sections 81 are formed, which start from wall sections 85, which laterally delimit the recess 71, and extend in sections in the tangential direction of the recess 71. The two holding sections 81 have an essentially U-shaped course. At the outer end of mutually facing legs 87 of the holding sections 81, which limit the feed opening for that of the bar 67, a shoulder 79 is arranged in each case, which engages in the respective groove 73 on the bar 67. FIG. 10 schematically shows a partial view of the segment plate 65 according to FIG. 9 in a preferred development. According to this development, two mutually opposite, elastically deformable are in the respective recess 71
Halteabschnitte 91 angeordnet, die einen im Wesentlichen S-förmigen Verlauf aufweisen. Die Aufnahme 75 am Boden 83 der Ausnehmung 71 und die beiden Halteabschnitte 81 bzw. 91 bewirken eine Zentrier- und Rastfunktion bei der Montage des Segmentbleches 65. Holding portions 91 are arranged, which have a substantially S-shaped course. The receptacle 75 on the bottom 83 of the recess 71 and the two holding sections 81 and 91 effect a centering and latching function during the assembly of the segment plate 65.
Fig. 1 1 zeigt schematisch eine Teilansicht eines Segmentbleches 93 und einer Leiste 97 gemäß einer weiteren bevorzugten Ausführungsform in einer zu dem Statortragring 7 beabstandeten Position. Die Leiste 97 ist an ihrem freien Ende profiliert ausgebildet, Ein Sockelabschnitt 101 mit quaderförmigen Querschnitt geht in einen Endabschnitt 103 geringerer Breite über. Beidseitig der Leiste 97 sind zwischen dem Sockelabschnitt 101 und dem Endabschnitt 103 einen gekrümmten Verlauf aufweisende bzw. bogenförmige Vertiefungen 99 ausgebildet. In diese Vertiefungen 99 greifen an den Wänden 85 der Ausnehmung 71 des Segmentbleches 93 ausgebildete Halteabschnitte 95 abschnittsweise ein und stützen sich an dem Sockelabschnitt 101. Die beiden Halteabschnitte 95 sind plastisch oder elastisch verformbar. 1 1 schematically shows a partial view of a segment plate 93 and a strip 97 according to a further preferred embodiment in one to the stator support ring 7 spaced position. The strip 97 is profiled at its free end. A base section 101 with a cuboid cross section merges into an end section 103 of smaller width. On both sides of the strip 97, arcuate depressions 99 are formed between the base section 101 and the end section 103. Sections 95 formed on the walls 85 of the recess 71 of the segment sheet 93 engage in sections in these recesses 99 and are supported on the base section 101. The two holding sections 95 are plastically or elastically deformable.
Durch eine radial gerichtete Bewegung relativ zu dem Statortragring 7 wird das Segmentblech 93 gegen den Statortragring 7 gedrückt. Dabei werden, wie durch die strichlinierte Darstellung der Position von Endabschnitt 103‘ und Halteabschnitten 95‘ angedeutet, diese in Richtung des Bodens 83 der Ausnehmung 71 bewegt. Die Halteabschnitte 95‘ erreichen ihre Endlage durch die Mitnahme durch den Sockelabschnitt 101. Die Ausgestaltung der Halteabschnitte 95 und der Leiste 97 sind derart gewählt, dass eine Art Kniehebelanordnung realisiert wird, durch welche das Segmentblech 93 radial und tangential an dem Statortragring 7 fixiert wird. Die Halteabschnitte 95 sind dabei als Kniehebel ausgebildet, welche aufgrund der radial gerichteten Bewegung des Segmentbleches 93 gegen den Statortragring 7 über ihren Totpunkt hinausbewegt werden, so dass sich ein Verriegelungseffekt zwischen den Halteabschnitten 95 und der Leiste 97 einstellt. The segment plate 93 is pressed against the stator support ring 7 by a radially directed movement relative to the stator support ring 7. As indicated by the broken line of the position of end section 103 'and holding sections 95', these are moved in the direction of the bottom 83 of the recess 71. The holding sections 95 ″ reach their end position by being carried along by the base section 101. The configuration of the holding sections 95 and the strip 97 are selected such that a type of toggle lever arrangement is realized by means of which the segment plate 93 is fixed radially and tangentially to the stator support ring 7. The holding sections 95 are designed as toggle levers which, due to the radially directed movement of the segment plate 93 against the stator support ring 7, are moved past their dead center, so that a locking effect occurs between the holding sections 95 and the strip 97.
Fig. 12 zeigt schematisch eine Teilansicht des Segmentbleches 93 gemäß Fig. 9 in einer bevorzugten Weiterbildung. Das Segmentblech 93 ist zu dem Statortragring 7 beabstandet dargestellt. An dem Statortragring 7 ist mittel der Schraubverbindung 69 eine Leiste 107 lösbar befestigt. Das Profil der Leiste 107 unterscheidet sich von dem Profil der Leiste 97, die in Fig. 11 dargestellt ist, durch eine asymmetrische Ausgestaltung. Im Sockelabschnitt 109 der Leiste 107 ist nur auf einer Seite eine einen gekrümmten Verlauf aufweisende bzw. bogenförmige Vertiefung 99 ausgebildet. In diese Vertiefung 99 greift der an der Wand 85 der Ausnehmung 71 ausgebildete Halteabschnitt 95 abschnittsweise formschlüssig ein. Durch die radial gerichtete Bewegung relativ zu dem Statortragring 7 wird der Halteabschnitt 95 über seinen Totpunkt hinwegbewegt. Auf der der Vertiefung 99 abgewandten Seite weist der Sockelabschnitt 109 keine Veränderung im Profilverlauf auf. Hingegen weist die Ausnehmung 71 eine mit einer Verzahnung 105 versehene Wand auf, die der der Wand 85 gegenüberliegt. Die Verzahnung 105 wird mit der ihr zugewandten Oberfläche des Sockelabschnittes 109 in Eingriff gebracht. Der wie ein Kniehebel funktionierende Halteabschnitt 95 wirkt mit der Verzahnung 105 zusammen, um das an dem Statortragring 7 anliegende Segmentblech 93 tangential und radial zu fixieren. FIG. 12 schematically shows a partial view of the segment sheet 93 according to FIG. 9 in a preferred development. The segment sheet 93 is shown spaced from the stator support ring 7. A bar 107 is detachably fastened to the stator support ring 7 by means of the screw connection 69. The profile of the strip 107 differs from the profile of the strip 97, which is shown in FIG. 11, by an asymmetrical design. In the base section 109 of the strip 107, an arcuate depression 99, which has a curved course, is formed on only one side. The holding section 95 formed on the wall 85 of the recess 71 engages in sections in this recess 99 in a form-fitting manner. Due to the radially directed movement relative to the stator support ring 7, the holding section 95 is moved past its dead center. On the side facing away from the recess 99, the base section 109 has no change in the profile profile. On the other hand, the recess 71 has a wall provided with a toothing 105 which is opposite that of the wall 85. The toothing 105 is brought into engagement with the surface of the base section 109 facing it. Like a toggle Functioning holding section 95 cooperates with the toothing 105 in order to fix the segment plate 93 lying against the stator support ring 7 tangentially and radially.

Claims

Ansprüche Expectations
1. Segmentblech (21 , 47, 53, 55, 65, 93) für ein Statorblechpaket (15) eines Generators (1 ) einer Windenergieablage (100), wobei das Segmentblech (21 ) die Form eines Ringsegmentes aufweist, 1. segment sheet (21, 47, 53, 55, 65, 93) for a stator sheet stack (15) of a generator (1) of a wind energy deposit (100), the segment sheet (21) having the shape of a ring segment,
mit einem ersten radialen Abschnitt (23), in welchem Aussparungen (29) zur Aufnahme einer Statorwicklung vorgesehen sind, with a first radial section (23) in which recesses (29) are provided for receiving a stator winding,
mit einem zweiten radialen Abschnitt (25), der radial benachbart zu dem ersten Abschnitt (23) angeordnet ist, der ein Segment eines magnetischen Jochs des Generators (1 ) bildet, sowie with a second radial section (25) which is arranged radially adjacent to the first section (23) which forms a segment of a magnetic yoke of the generator (1), and
mit einem dritten radialen Abschnitt (27), der radial benachbart zu dem zweiten Abschnitt (25) angeordnet ist, dadurch gekennzeichnet, dass der dritte radiale Abschnitt (27) zumindest zwei azimutal beabstandet angeordnete Ausnehmungen (36, 49, 59, 61 , 71 ) aufweist, die für eine formschlüssige Verbindung mit an einem Statortragring (7) angeordneten profilierten Leisten (13, 41 , 51 , 67, 97, 107) ausgebildet sind. With a third radial section (27) which is arranged radially adjacent to the second section (25), characterized in that the third radial section (27) has at least two recesses (36, 49, 59, 61, 71) which are spaced azimuthally. which are designed for a positive connection with profiled strips (13, 41, 51, 67, 97, 107) arranged on a stator support ring (7).
2. Segmentblech (21 , 47, 53, 55, 65, 93) nach Anspruch 1 , dadurch gekennzeichnet, dass die formschlüssige Verbindung zwischen dem Segmentblech (21 , 47, 53, 55, 65, 93) und den Leisten (13, 41 , 51 , 67, 97, 107) als eine Feder-Nut-Verbindung ausgebildet ist. 2. segment sheet (21, 47, 53, 55, 65, 93) according to claim 1, characterized in that the positive connection between the segment sheet (21, 47, 53, 55, 65, 93) and the strips (13, 41 , 51, 67, 97, 107) is designed as a tongue and groove connection.
3. Segmentblech (21 , 47, 53, 55, 65, 93) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Ausnehmungen (36) endseitig an dem Segmentblech (21 ) ausgebildet sind und jeweils einen tangentialen nasenförmigen Vorsprung (35) ausbilden, der formschlüssig mit einer korrespondierenden Vertiefung (37) an den Leisten (13) in Eingriff bringbar ist. 3. segment sheet (21, 47, 53, 55, 65, 93) according to claim 1 or 2, characterized in that the recesses (36) are formed at the end of the segment sheet (21) and each form a tangential nose-shaped projection (35) , which can be brought into engagement with a corresponding recess (37) on the strips (13).
4. Segmentblech (21 , 47, 53, 55, 65, 93) nach Anspruch 1 bis 3, dadurch gekennzeichnet, dass die Leisten (13, 41 , 51 , 67, 97, 107) als Strangpressprofile ausgeführt sind, welche vorzugsweise zumindest partiell aus einem Leichtmetall bestehen. 4. segment sheet (21, 47, 53, 55, 65, 93) according to claim 1 to 3, characterized in that the strips (13, 41, 51, 67, 97, 107) are designed as extruded profiles, which are preferably at least partially consist of a light metal.
5. Segmentblech (21 , 47, 53, 55, 65, 93) nach Anspruch 1 , dadurch gekennzeichnet, dass die Leisten (41 ) einen hohlzylindrischen Abschnitt (43) und einen quaderförmigen Abschnitt (45) aufweisen. 5. segment sheet (21, 47, 53, 55, 65, 93) according to claim 1, characterized in that the strips (41) have a hollow cylindrical section (43) and a cuboid section (45).
6. Segmentblech (21 , 47, 53, 55, 65, 93) nach Anspruch 5, dadurch gekennzeichnet, dass das Segmentblech (47) an einem Ende eine tangentiale halbkreisförmige6. segment plate (21, 47, 53, 55, 65, 93) according to claim 5, characterized in that the segment plate (47) at one end a tangential semicircular
Ausnehmung (49) aufweist, deren Kontur mit der Kontur des hohlzylindrischen Abschnitts (43) korrespondiert, und an ihrem anderen Ende eine tangentiale, im Wesentlichen quaderförmige Ausnehmung aufweist, deren Kontur mit der Kontur des quaderförmigen Abschnitts (45) der Leiste (41 ) korrespondiert. Has recess (49) whose contour matches the contour of the hollow cylindrical Section (43) corresponds, and has at its other end a tangential, essentially cuboid recess, the contour of which corresponds to the contour of the cuboid section (45) of the strip (41).
7. Segmentblech (21 , 47, 53, 55, 65, 93) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass in dem dritten Abschnitt (27) zumindest eine radiale7. segment sheet (21, 47, 53, 55, 65, 93) according to any one of the preceding claims, characterized in that in the third section (27) at least one radial
Ausnehmung (59, 61 ) angeordnet ist, die eine im Wesentlichen parallelgrammförmigen Kontur aufweist, und dass die profilierte Leiste (51 ) einen schwalbenschwanzförmigen Querschnitt aufweist. Recess (59, 61) is arranged, which has an essentially parallelogram-shaped contour, and that the profiled strip (51) has a dovetail-shaped cross section.
8. Segmentblech (21 , 47, 53, 55, 65, 93) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass in dem dritten Abschnitt (27) zumindest eine radiale8. segment sheet (21, 47, 53, 55, 65, 93) according to any one of the preceding claims, characterized in that in the third section (27) at least one radial
Ausnehmung (71 ) ausgebildet ist, in der sich radial erstreckende, elastisch verformbare Halteabschnitte (77, 81 , 91 ) ausgebildet sind, die an ihren freien Ende Hinterschneidungen aufweisen, die mit der Leiste (67) formschlüssig in Eingriff bringbar sind. Recess (71) is formed, in which radially extending, elastically deformable holding sections (77, 81, 91) are formed, which have undercuts at their free ends, which can be positively engaged with the bar (67).
9. Segmentblech (21 , 47, 53, 55, 65, 93) nach Anspruch 8, dadurch gekennzeichnet, dass in einem die Ausnehmung (71 ) tangential begrenzenden Boden (83) eine9. segment sheet (21, 47, 53, 55, 65, 93) according to claim 8, characterized in that in a the recess (71) tangentially delimiting bottom (83)
Aufnahme (75) zentrisch angeordnet ist, wobei die Kontur der Aufnahme (75) der Kontur des freien Endes der Leiste (67) entspricht. The receptacle (75) is arranged centrally, the contour of the receptacle (75) corresponding to the contour of the free end of the bar (67).
10. Segmentblech (21 , 47, 53, 55, 65, 93) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass in dem dritten Abschnitt (27) zumindest eine radiale Ausnehmung (71 ) ausgebildet ist, in der sich tangential erstreckende, elastisch und/oder plastisch nachgiebige Kniehebel-Halteabschnitte (95) ausgebildet sind. 10. segment sheet (21, 47, 53, 55, 65, 93) according to any one of the preceding claims, characterized in that in the third section (27) at least one radial recess (71) is formed, in the tangentially extending, elastic and / or plastically flexible toggle lever holding sections (95) are formed.
1 1. Segmentblechanordnung mit mehreren Segmentblechen (21 , 47, 53, 55, 65, 93) nach einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, dass aus den Segmentblechen (53, 55) gebildete Blechringe paarweise übereinander angeordnet sind, wobei ein unterer Blechring jeweils aus Segmentblechen (53) gebildet ist, deren zumindest eine radiale Ausnehmung (59) in tangentialer Richtung eine Neigung aufweist, und der obere Blechring aus Segmentblechen (55) gebildet ist, deren zumindest eine radiale Ausnehmung (61 ) in tangentialer Richtung eine gegensinnige Neigung aufweist. 1 1. Segment sheet metal arrangement with several segment sheets (21, 47, 53, 55, 65, 93) according to one of claims 7 to 10, characterized in that sheet metal rings formed from the segment sheets (53, 55) are arranged in pairs one above the other, a lower one The sheet metal ring is formed from segment sheets (53), the at least one radial recess (59) of which is inclined in the tangential direction, and the upper sheet metal ring is formed from segment sheets (55), the at least one radial recess (61) of which is opposite in the tangential direction Inclination.
12. Statorblechpaket (15) für einen Generator (1 ) einer Windenergieanlage (100), mit einer Vielzahl von Segmentblechen (21 , 47, 53, 55, 65, 93), wobei mehrere Segmentbleche12. stator laminated core (15) for a generator (1) of a wind energy installation (100), with a plurality of segment laminations (21, 47, 53, 55, 65, 93), with several segment laminations
(21 , 47, 53, 55, 65, 93) in einer Ebene so aneinander angeordnet sind, dass sie gemeinsam einen Blechring ausbilden, und (21, 47, 53, 55, 65, 93) are arranged in a plane so that they are together form a sheet metal ring, and
mehrere Segmentbleche (21 , 47, 53, 55, 65, 93) in den gebildeten Blechringen derart gestapelt sind, dass sie gemeinsam das Statorblechpaket (15) ausbilden, a plurality of segment sheets (21, 47, 53, 55, 65, 93) are stacked in the sheet metal rings formed in such a way that they form the stator sheet stack (15) together,
wobei das Statorblechpaket (15) einen ersten radialen Abschnitt aufweist, in welchem eine Vielzahl Nuten zur Aufnahme einer Statorwicklung vorgesehen sind, wobei die Nuten durch in den Segmentblechen (21 , 47, 53, 55, 65, 93) vorgesehene Aussparungen (29) gebildet sind, einen zweiten radialen Abschnitt, der radial benachbart zu dem ersten Abschnitt angeordnet ist, der ein Segment eines magnetischen Jochs des Generators bildet, sowie einen dritten radialen Abschnitt, der radial benachbart zu dem zweiten Abschnitt angeordnet ist, dadurch gekennzeichnet, dass die Segmentbleche (21 , 47, 53, 55, 65, 93) nach einem der Ansprüche 1 bis 1 1 ausgebildet sind, wobei der dritte radiale Abschnitt (27) zumindest zwei azimutal beabstandet angeordnete Ausnehmungen (36, 49, 59, 61 , 71 ) aufweist, die für eine formschlüssige Verbindung mit an einem Statortragring (7) angeordneten profilierten Leisten (13, 41 , 51 , 67, 97, 107) ausgebildet sind. wherein the stator laminated core (15) has a first radial section, in which a plurality of grooves are provided for receiving a stator winding, the grooves being formed by recesses (29) provided in the segment laminations (21, 47, 53, 55, 65, 93) are, a second radial section, which is arranged radially adjacent to the first section, which forms a segment of a magnetic yoke of the generator, and a third radial section, which is arranged radially adjacent to the second section, characterized in that the segment plates ( 21, 47, 53, 55, 65, 93) according to one of claims 1 to 1 1, wherein the third radial section (27) has at least two azimuthally spaced recesses (36, 49, 59, 61, 71), which are designed for a positive connection with profiled strips (13, 41, 51, 67, 97, 107) arranged on a stator support ring (7).
13. Statorblechpaket (15) nach Anspruch 12, dadurch gekennzeichnet, dass das13. stator laminated core (15) according to claim 12, characterized in that the
Statorblechpaket (15) zwischen zwei aus unteren Druckblechsegmenten (9) und oberen Druckblechsegmenten (17) gebildeten Ringen angeordnet ist, wobei die unteren Druckblechsegmente (9) am Statortragring (7) ortsfest angeordnet sind und die oberen Druckblechsegmente (17) in axialer Richtung des Statortragrings (7) verschiebbar sind. Stator lamination stack (15) is arranged between two rings formed from lower pressure plate segments (9) and upper pressure plate segments (17), the lower pressure plate segments (9) being arranged in a stationary manner on the stator support ring (7) and the upper pressure plate segments (17) in the axial direction of the stator support ring (7) can be moved.
14. Generator (1 ) einer Windenergieanlage (100), insbesondere langsam drehender14. Generator (1) of a wind turbine (100), in particular slowly rotating
Synchron-Ringgenerator, mit einem Generatorstator (5), und einem relativ zu dem Generatorstator (5) drehbar gelagerten Generatorrotor (3), wobei der Generatorstator (5) wenigstens ein Statorblechpaket (10) aufweist, in welchem eine Vielzahl von Nuten vorgesehen sind, in denen eine Statorwicklung aufgenommen ist, dadurch gekennzeichnet, dass der Generatorstator (5) einen Statortragring (7) aufweist, an dem in tangentialer Richtung Leisten (13, 41 , 51 , 67, 97, 107) angeordnet sind, wobei an den Leisten (13, 41 , 51 , 67, 97, 107) wenigstens ein Statorblechpaket (15) mittels formschlüssiger Verbindung mit den Leisten (13, 41 , 51 , 67, 97, 107) verbunden ist. Synchronous ring generator, with a generator stator (5) and a generator rotor (3) rotatably mounted relative to the generator stator (5), the generator stator (5) having at least one stator laminated core (10) in which a plurality of grooves are provided, in which a stator winding is accommodated, characterized in that the generator stator (5) has a stator support ring (7), on which strips (13, 41, 51, 67, 97, 107) are arranged in the tangential direction, with the strips ( 13, 41, 51, 67, 97, 107) at least one stator laminated core (15) is connected to the strips (13, 41, 51, 67, 97, 107) by means of a positive connection.
15. Generator (1 ) nach Anspruch 14, dadurch gekennzeichnet, dass das wenigstens eine Statorblechpaket (15) nach einem der Ansprüche 12 oder 13 ausgebildet ist. 15. Generator (1) according to claim 14, characterized in that the at least one stator laminated core (15) is designed according to one of claims 12 or 13.
16. Windenergieanlage (100), insbesondere getriebelose Windenergieanlage, mit einem Turm (102), einer auf dem Turm (102) drehbar angeordneten Gondel (104), einer drehbar an der Gondel (104) gelagerten Nabe (106) mit einer Anzahl von Rotorblättern (108), und einem Generator (1 ) zur Bereitstellung elektrischer Energie, der einen mit der Nabe (106) verbundenen Generatorrotor (3) und einen mit der Gondel (104) verbundenen Generatorstator (5) aufweist, dadurch gekennzeichnet, dass der Generator (1 ) nach einem der Ansprüche 14 oder 15 ausgebildet ist. 16. Wind power plant (100), in particular gearless wind power plant, with a tower (102), a gondola (104) rotatably arranged on the tower (102), a hub (106) rotatably mounted on the gondola (104) with a number of Rotor blades (108), and a generator (1) for providing electrical energy, which has a generator rotor (3) connected to the hub (106) and a generator stator (5) connected to the nacelle (104), characterized in that the generator (1) is designed according to one of claims 14 or 15.
EP19801866.5A 2018-11-09 2019-11-11 Segment sheet for a stator lamination stack, stator lamination stack, and generator and wind turbine comprising same Pending EP3878075A1 (en)

Applications Claiming Priority (2)

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DE102018128129.3A DE102018128129A1 (en) 2018-11-09 2018-11-09 Segment sheet for a stator laminated core, stator laminated core, as well as generator and wind turbine with the same
PCT/EP2019/080872 WO2020094884A1 (en) 2018-11-09 2019-11-11 Segment sheet for a stator lamination stack, stator lamination stack, and generator and wind turbine comprising same

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CN (1) CN113287247A (en)
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2557391A1 (en) * 1975-12-19 1977-06-30 Licentia Gmbh Endplate fastening for small electric motor - has deformable metal strip attached to stator and received in notched location in endplate
JPS5689636U (en) 1979-12-11 1981-07-17
CH664854A5 (en) * 1984-08-08 1988-03-31 Bbc Brown Boveri & Cie ELECTRIC MACHINE.
JPH0614482A (en) * 1992-06-22 1994-01-21 Fuji Electric Co Ltd Stator iron core of rotary electrical equipment
EP2182612A1 (en) * 2008-10-28 2010-05-05 Siemens Aktiengesellschaft Arrangement for cooling of an electrical machine
DE102008063783A1 (en) * 2008-12-18 2010-06-24 Wind-Direct Gmbh Generator for a wind turbine and method for its production
EP2385609B1 (en) 2010-05-05 2018-11-28 Siemens Aktiengesellschaft Generator with a segmented stator
US8319405B2 (en) * 2010-08-20 2012-11-27 Siemens Energy, Inc. Methods and apparatuses for attaching a stator core to a generator frame
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
US8179002B2 (en) * 2011-03-31 2012-05-15 General Electric Company Axial cooled generator
US8860287B2 (en) * 2011-11-29 2014-10-14 General Electric Company Wind power generation systems including segmented stators
DE102011122023A1 (en) * 2011-12-23 2013-06-27 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Robot sheet package of an electric motor
ITMI20121569A1 (en) * 2012-09-20 2014-03-21 Wilic Sarl LOCKING SYSTEM OF SEGMENTS OF A ROTARY ELECTRIC MACHINE OF A AIRCRAFT MACHINE
CN103051077B (en) 2013-01-09 2015-02-04 国电联合动力技术有限公司 Permanent magnet generator with stator inclined grooves and inclined groove realization method of permanent magnet generator
CN204615540U (en) 2015-04-29 2015-09-02 西安盾安电气有限公司 A kind of stator structure of natural air cooled permanent magnet direct-driving aerogenerator

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US20210408847A1 (en) 2021-12-30
DE102018128129A1 (en) 2020-05-14
US11764625B2 (en) 2023-09-19

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