Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
  • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
• • 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
  • 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
  • H02K1/22—Rotating parts of the magnetic circuit
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
  • H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
  • H02K15/50—Disassembling, repairing or modifying dynamo-electric machines
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K19/00—Synchronous motors or generators
  • H02K19/16—Synchronous generators
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K19/00—Synchronous motors or generators
  • H02K19/16—Synchronous generators
  • H02K19/26—Synchronous generators characterised by the arrangement of exciting windings
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K5/00—Casings; Enclosures; Supports
  • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
• • 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
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
  • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
  • H02K2213/12—Machines characterised by the modularity of some components
• • 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
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49002—Electrical device making
  • Y10T29/49009—Dynamoelectric machine
  • Y10T29/49012—Rotor

Definitions

• the present invention relates to a synchronous generator of a gearless wind turbine. Moreover, the application relates to a wind turbine with such a generator. Furthermore, the present application relates to a transport arrangement for transporting a synchronous generator of a gearless wind energy plant.
• Wind turbines particularly horizontal axis wind turbines, one of which is shown in FIG. 1, are well known.
• an aerodynamic rotor directly drives the rotor of a generator, so that this generator converts the kinetic energy obtained from the wind into electrical energy.
• the rotor of the generator thus rotates just as slowly as the aerodynamic rotor.
• the generator has a relative to the rated power relatively large generator diameter, in particular large air gap diameter on.
• Modern wind turbines such as an E126 from ENERCON GmbH, have a nominal output of 7.5 MW. Also, this E126 is a gearless wind turbine and requires a generator of the same size.
• the problem here is to transport such a generator to the installation site of the wind energy plant.
• the maximum width that can be transported on the road is about 5 m.
• the maximum diameter of the generator may be 5 m in a transport, when the generator is lying, ie transported with a rotation axis perpendicular to the road.
• the diameter of a generator is thereby defacto limited.
• the mentioned wind energy plant type E126 has a generator with an air gap diameter of about 10 m.
• the transport problem is solved by the fact that the generator is transported in several parts, namely by each runner and stator are divided into four parts. The rotor and stator are thus delivered in individual parts and assembled at the construction site or in the vicinity.
• German Patent and Trademark Office has in the priority application the following state of the art research: DE 199 23 925 A1, US 2010/002431 1 A1, DE 10 2009 032 885 A1, DE 10 2010 039 590 A1.
• a synchronous generator according to claim 1 is proposed.
• Such a synchronous generator of a gearless wind turbine thus comprises a stator and a rotor.
• the term rotor for the rotating part of the Generators used.
• a multi-part external rotor is used according to the invention.
• the generator is thus an external rotor generator, with internal stator and external rotor.
• the runner is divided, at least in two parts.
• the stator is not divided. It was thus recognized that an enlargement of the generator in its diameter without division of the stator is possible.
• An internal stator can thus be formed in one piece and have a size up to the maximum transport width.
• the outer diameter of the stator in this case corresponds approximately to the mean diameter of the air gap or precisely formulated the inner diameter of the air gap.
• the outer rotor has a larger outer diameter, namely larger than the air gap diameter and can thus be greater than the maximum transport width. Accordingly, it is proposed to divide the external rotor. This is based on the knowledge that a division of the runner, especially if it is an external rotor, is associated with few problems. Even if the generator is a foreign-excited synchronous generator and thus the rotor must be electrically supplied with a field current, the separation of such a rotor causes little problems.
• an externally excited rotor is also composed of many individual rotor poles, namely cores with corresponding coils, in the case of customary gearless wind turbines. Since each rotor pole carries a DC winding, a continuous winding, as is known, for example, for the stator, does not offer itself to the rotor. This facilitates divisibility.
• the synchronous generator is designed as a ring generator.
• a ring generator describes a construction of a generator, in which the magnetically active region is arranged substantially on an annular region concentrically around the axis of rotation of the generator.
• the magnetically active region namely of the rotor and the stator only in the radially outer quarter of the Generator arranged.
• a support structure for the stator can be provided in the middle of the generator.
• At least 48, more preferably at least 72 and in particular at least 192, stator poles are provided.
• a multi-pole generator is proposed. This is suitable as a slow-running generator and is therefore excellently adapted to the use in the gearless wind turbine.
• the generator is also proposed to form the generator as a 6-phase generator, namely as a generator having two 3-phase systems, which are in particular shifted by about 30 degrees to each other.
• a 6-phase generator namely as a generator having two 3-phase systems, which are in particular shifted by about 30 degrees to each other.
• a 6-phase current is well suited for a subsequent rectification and then further processing with a frequency inverter.
• it is advantageous for a so-called full converter concept in which the generated current is completely rectified, ignoring any losses, and prepared by the inverter for feeding it into a power grid.
• stator of the synchronous generator has a continuous winding.
• the stator can thus be produced in a very reliable manner, in particular without unnecessary electrical connection points, so that a minimization of susceptibility to interference is achieved in this respect.
• no electrical contacts can solve this insofar as there are no electrical contacts.
• stator is undivided such that an undivided stator lamination packet is present, which carries the magnetic field during operation and accommodates the winding or windings.
• This does not exclude the disassembly of individual elements such as, for example, fastening elements, cooling elements, cover elements or the like.
• the stator has an outer diameter of more than 4.3 m.
• a stator is provided with an outer diameter of more than 4.7 m.
• the outer diameter of the stator is about 5 m. This allows the maximum transport width exploited and as far as the synchronous generator can be optimized or maximized without a problematic division of the stator is required.
• the maximum size - with regard to the diameter - for an undivided stator is achieved if these are considered to be 5 m as the transport upper size.
• the rotor is composed of several rotor segments in the circumferential direction, in particular of two or four rotor segments 4.
• a symmetrical division is proposed, wherein all and / or each two rotor segments are the same size, in particular make up an equal circular segment.
• rotor segments are provided with different numbers of rotor poles.
• This embodiment also permits a symmetrical division of the rotor if, for example, two small and two large segments are provided which are each of the same size, in particular in each case have the same number of rotor poles. For example.
• a runner with 48 poles can be divided into four segments, two of which each have 8 poles and the other two 16 poles each.
• two large segments are provided which give the runner a basic stability, with the two smaller segments basically connecting the two large segments during assembly.
• a synchronous generator with an axis of rotation in which at least two rotor segments can be removed for transport.
• This synchronous generator is designed so that when these two rotor segments are dismantled, the largest extent of the synchronous generator is determined in one direction by the stator and in another direction by the rotor.
• the stator forms the largest dimension of synchronous generator in a first transverse direction to the axis of rotation of the stator and that in a longitudinal direction transverse to the axis of rotation and transverse to the transverse direction of the rotor forms the largest extent of the synchronous generator.
• the synchronous generator is designed so that two, in particular opposing rotor segments are disassembled and thereby the dimension of the generator is reduced precisely at this point, namely the diameter of the stator.
• These removable and accordingly then dismantled rotor segments need only so big be that their disassembly leads exactly to the fact that the stator then forms the largest dimension there.
• a further reduction of the dimension of the generator in this direction is then no longer possible, because the stator can not be dismantled, at least not substantially.
• This transverse direction is then preferably to be aligned transversely to the direction of travel of the transport vehicle during transport, with the result that the transport width of the loaded vehicle has been reduced to the outside diameter of the stator.
• the dimensions of the generator need not be reduced.
• the rotor or can runner segments remain and the generator thus has in this direction as the outer dimension of the outer diameter of the rotor.
• a synchronous generator which has a rated power of at least 500 kW, at least one MW and in particular at least two MW. It is thus proposed a synchronous generator for a wind turbine with high nominal power. This is advantageous realized by an undivided stator and a split rotor.
• a wind energy plant which has a synchronous generator according to at least one of the above embodiments. Accordingly, a wind turbine with maximized generator with high reliability can be achieved, which also generates no unnecessary transport problems.
• a transport arrangement for transporting a partially disassembled synchronous generator is proposed, in particular for transporting a synchronous generator according to at least one of the above-described embodiments.
• This synchronous generator has a stator and an external rotor.
• the transport arrangement comprises a main transport section, which may also be referred to as the main transport section, and this main transport section comprises the stator of the synchronous generator.
• the transport arrangement comprises at least two runner segments which have been dismantled by the synchronous generator. Accordingly, it is proposed to partially disassemble the synchronous generator for transport, wherein the stator is transported in one piece.
• the at least two disassembled rotor segments are formed as two rotor halves and offset from one another into a transport position in such a way that together they have a dimension in one direction that does not exceed an outer diameter of the stator.
• these two rotor halves are designed as a ring segment and a leg of each of the two ring segments is partially arranged between two legs of the other ring segment.
• the ring segments and thus the ring of the composite rotor must be designed to be correspondingly slim.
• the main transport section comprises at least one rotor segment, in particular two rotor segments, which are mounted on the synchronous generator.
• the main transport section is thereby formed and the rotor segments which remain mounted on the stator are selected accordingly, that the main transport section in a first direction has a width corresponding to the outer diameter of the stator and in a second direction has a length corresponding to the Outer diameter of the rotor corresponds.
• the first direction is aligned transversely to a direction of travel during transport and the width is then in particular the actual width of such a loaded transport vehicle.
• the second direction points in particular in the direction of travel.
• the first and second directions are preferably approximately in a plane and approximately at right angles to each other.
• the transport assembly comprises a partially disassembled synchronous generator as described above in at least one embodiment.
• the main section of the transport arrangement comprises a partial synchronous generator according to one of the embodiments described above, but without the rotor segments which have been dismantled by the synchronous generator.
• the main section of the transport arrangement essentially corresponds to the synchronous generator as a whole, but at least insofar as rotor segments have been dismantled so that in any case the width of the synchronous generator could be reduced to the size, namely the diameter, of the stator in one direction. It is thus proposed a transport of a synchronous generator, in which a minimized dismantling of rotor segments is proposed.
• a method for transporting a synchronous generator of a gearless wind turbine to the installation site of the wind turbine is proposed.
• the synchronous generator is partially disassembled by at least two rotor segments are dismantled.
• This includes the transport to the site of a wind turbine and the transport to a temporary manufacturing location in the vicinity of the site of the wind turbine, namely in particular a manufacturing location where, for example, a composite of the synchronous generator can take place and the transport from there to the immediate location in the installation Basically no transport restrictions, especially in terms of transport width, is subject here. In other words, transportation on public roads is already completed upon reaching such a temporary manufacturing facility.
• Fig. 1 shows a wind turbine in a perspective view.
• Fig. 2 shows a synchronous generator in perspective and schematically in a sectional view.
• Fig. 3 shows the synchronous generator according to FIG. 2 in a lateral sectional view schematically.
• Fig. 4 shows a stator in an axial plan view.
• Fig. 5 shows a partially disassembled synchronous generator in an axial plan view.
• Fig. 6 shows two for transport compactly folded runner segments in a plan view.
• FIG. 7 shows a partially disassembled synchronous generator according to a further embodiment in a schematic, axial view.
• FIG. 8 shows a partially disassembled synchronous generator according to FIG. 7 in a perspective view.
• 9 shows a partially disassembled synchronous generator according to FIGS. 7 and 8 in a sectional view diagrammatically and in perspective.
• FIG. 1 shows a wind energy plant 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 in rotation by the wind in rotation and thereby drives a generator in the nacelle 104 at.
• the synchronous generator 1 of FIG. 2 has a split external rotor 2 and a one-piece stator 4.
• the stator 4 is supported by means of radial support plates 6 on a receiving pin 8, which can also be referred to as a journal receptacle.
• a rotor hub 12 which receives rotor blades, which are not shown in FIG. 2, and which is fastened via a hub flange 14 to the external rotor 2, thereby the external rotor 2 relative to the stator 4th to turn.
• the external rotor 2 has for Polwovene 16, which rotate relative to a stator 18.
• Polene 16 As a result of this rotation, current is generated which is generated in windings or forwarded to which only winding heads 20 are indicated in FIG.
• Fig. 2 is a sectional view in perspective view, with some cut surfaces, namely those of the stator 18 and also of the receiving pin 8 are not shown hatched.
• the Poltene 16 shown are shown by a side view, which results from an actual division of the outer rotor 2.
• FIG. 2 shows only one outer rotor half 22 of the outer rotor 2.
• the outer rotor half 22 has a connecting flange 24 for connection to a further outer rotor half 22.
• this connecting flange projects beyond the basic annularity and beyond the dimension of such a ring of the external rotor 2.
• the synchronous generator 1 is provided for a gearless wind turbine and thus is a slow-speed. Any wind resistance through this projecting connecting flange 24 is thus unproblematic for the operation of the synchronous generator 1.
• the external rotor 2 and thus also the connecting flange 24 may be provided in a hub cover or in a spinner housing with which it rotates together.
• Fig. 2 also shows a journal 26 in the neck, which is fixedly connected to the spigot 8 and the axle journal 8 and the rotor hub 12 can rotatably carry in a lying outside the representation of FIG. 2 range via a corresponding pivot bearing. Because the rotor hub 12 is fixedly connected to the outer rotor 2 via the hub flange 14 in the assembled state, the outer rotor 2 is also supported thereon.
• Fig. 3 shows the synchronous generator of Fig. 2 in a side sectional view, as far as the stator 4 and other stationary parts, namely the receiving pin 8 and the axle journal 26 are shown cut.
• an air gap 28 is formed, which determines the transport dimension of the synchronous generator 1.
• the air gap diameter is 5 m.
• the air gap diameter determines the outer diameter of the stator 4, which corresponds to the air gap diameter neglecting the air gap thickness, the transport width.
• the two outer rotor halves 22, one of which is shown in FIGS. 2 and 3 can thus be removed from the synchronous generator 1 and the outer diameter of the stator 4, namely the outer diameter in the region of the stator core 18, remains as the maximum dimension.
• the two outer rotor halves 22 can be connected to each other via the connecting flange 24. Subsequently, the rotor hub 12 on the hub flange 14 with the external rotor 2, which is now composed of the two outer rotor halves 22, fixedly secured.
• a bearing of the rotor hub 12 may be provided on the journal 26, by the same time, at least partially, the external rotor 2 is stored.
• FIG. 4 schematically shows a stator 404 in an axial view schematically, wherein the stator 404 is very similar to the stator 4 of FIGS. 2 and 3. 4, only the stator 404 is shown and its outer diameter 430 thus determines the maximum dimension and thus the necessary width when transported on a vehicle.
• a split outer rotor each with an outer rotor half 422 is shown in an axial side view. 5 illustrates the assembly of the two outer rotor halves 422, which are moved towards each other according to the arrows shown and thereby absorb the stator 404 in itself.
• the connecting flanges 424 of the two outer rotor halves 422 are moved towards each other and then screwed together. It can already be seen from FIG. 5 that the space requirement for transporting the stator 404 decreases as a result of this simple measure, namely the dismantling of the external rotor into two demountable segments.
• the two outer halves 422 can be well transported in the disassembled state shown.
• Fig. 6 shows a way, the two outer rotor halves 422 grow as little as possible into each other.
• the two outer rotor halves 422 are each placed with a leg 432 in a semi-enclosed inner region 434 of the respective outer rotor half 422.
• a leg 432 is in particular a section of the outer rotor half 422 which ends at a connecting flange 424.
• Such an arrangement can provide a transport width 436 which corresponds to the size of the outer diameter 430 of the stator 404, at least does not exceed it.
• the rotor halves 422 are each formed as ring segments with a maximum radial thickness 438, which in the example shown is ultimately determined by the extent of the connecting flange 424.
• This radial thickness 438 must be smaller than an inner free diameter 440 of the outer rotor 402.
• FIG. 7 shows a further embodiment of a synchronous generator 701 in a schematic, axial view.
• This synchronous generator 701 has a stator 704 and a split external rotor.
• the split outer rotor has a large traveler segment 742 and two small outer rotor segments 744.
• the small outer rotor segments 744 are dismantled and are shown separately in Fig. 7 separately.
• the diameter or the width of the synchronous generator 701 is limited in one area to the outer diameter 730 of the stator 704.
• Such a limitation or reduction of the width of the synchronous generator 701 to the value of the diameter 730 of the stator 704 can thus be achieved without the external rotor being completely dismantled. that would have to.
• the dismantling of two small outer rotor segments may be sufficient.
• the stator 704 together with the two large outer race segments 742 essentially form a main transport section.
• the outer rotor 72 has rotor poles 746, the two small outer rotor segments 744 each having 12 poles and the two large outer rotor segments 742 each having 24 poles.
• the two smaller outer rotor segments 744 each have a secant flange 748.
• a respective counterflange 750 is provided accordingly.
• the synchronous generator 701 already have a relatively high stability even with disassembled small outer rotor segments 744, because the mating flanges 750 and other elements without attachment to the respective small outer rotor segment 744 connect the two remaining on the synchronous generator 701 outer rotor segments 742.
• the secant flanges 748 and the corresponding mating flanges 750 may be formed as a flat, flat connecting flanges and thereby create a relatively simple way to attach the small outer rotor segments 744 to the remaining synchronous generator 701.
• FIG. 8 of the synchronous generator 701 a basically preferred encapsulated embodiment of the external rotor 702 becomes clear.
• An encapsulated embodiment thus represents a preferred embodiment not only in the variant shown, but also in general.
• the two small outer rotor segments 744 form only a very small portion of the entire outer rotor 702. It can be seen that, at least for the transport of the synchronous generator 701 disassembling the two small outer rotor segments 744 hardly affects the stability of the construction of the outer rotor 702.
• a generally rigid outer shell 752 of the outer rotor 702 is already given a high stability.
• the two mating flanges 750 are formed and prepared for connection to the secant flanges 748. It can also be seen in FIG. 8 that the secant flanges 748 have good accessibility for mounting and dismounting.
• the two small outer rotor segments 744 are strengthened by a shell portion 754 in their stability.
• a hub flange 714 is provided on which the aerodynamic rotor can be fastened in a simple manner.
• FIG. 9 shows in its schematic sectional view of the synchronous generator 701 that its structure is very similar to that shown in FIGS. 2 and 3.
• a stator 704 is provided with a stator 718 and winding heads 720.
• the external rotor 702, as shown in FIG. 9, also has pole packets 716 which rotate relative to the stator core 718.
• a receiving pin 708 and an attached axle journal 726 are provided.
• the embodiment of FIGS. 7 to 9 differs from the embodiment of FIGS. 2 and 3 essentially by the type of division of the external rotor 2 or 702. According to the embodiments of FIGS. 2 and 3, a subdivision into two becomes substantially the same External rotor halves 22 proposed, whereas the embodiments of FIGS.
• the stator can be executed without separation.
• the rotor namely the electromagnetic rotor of the synchronous generator, is divided into at least two elements, preferably several elements. Basically, a rotor and a series connection of the poles or pole shoes is proposed if this is externally excited. This reduces the separation effort when separating such a rotor, at least in comparison to the separation of a multi-phase AC voltage system to a stator. The result is, inter alia, a transport-optimized distribution. beat.
• a common transport of stator and a part of the rotor is proposed, in which only two side parts of the rotor must be transported by an extra transport.

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• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Sustainable Energy (AREA)
• Manufacturing & Machinery (AREA)
• Sustainable Development (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
• Wind Motors (AREA)
• Manufacture Of Motors, Generators (AREA)
• Iron Core Of Rotating Electric Machines (AREA)

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• 2012
  • 2012-05-22 DE DE102012208547A patent/DE102012208547A1/de not_active Withdrawn
• 2013
  • 2013-04-05 WO PCT/EP2013/057253 patent/WO2013174566A2/de active Application Filing
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