DE19636591C2 - Synchronous generator for a gearless wind energy converter - Google Patents
Synchronous generator for a gearless wind energy converterInfo
- Publication number
- DE19636591C2 DE19636591C2 DE19636591A DE19636591A DE19636591C2 DE 19636591 C2 DE19636591 C2 DE 19636591C2 DE 19636591 A DE19636591 A DE 19636591A DE 19636591 A DE19636591 A DE 19636591A DE 19636591 C2 DE19636591 C2 DE 19636591C2
- Authority
- DE
- Germany
- Prior art keywords
- cooling
- synchronous generator
- stator
- rotor
- tower head
- 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.)
- Expired - Lifetime
Links
- 230000001360 synchronised effect Effects 0.000 title claims description 15
- 238000001816 cooling Methods 0.000 claims description 48
- 230000000694 effects Effects 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 5
- 230000005405 multipole Effects 0.000 description 7
- 230000005284 excitation Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/60—Cooling or heating of wind motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1823—Rotary generators structurally associated with turbines or similar engines
- H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
- H02K7/1838—Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
-
- 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
- F05B2220/7064—Application in combination with an electrical generator of the alternating current (A.C.) type
- F05B2220/70642—Application in combination with an electrical generator of the alternating current (A.C.) type of the synchronous type
-
- 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
- F05B2220/7066—Application in combination with an electrical generator via a direct connection, i.e. a gearless transmission
-
- 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
- F05B2220/7068—Application in combination with an electrical generator equipped 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
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Motor Or Generator Cooling System (AREA)
Description
Die Erfindung betrifft einen Synchrongenerator für einen ge triebelosen Windenergiekonverter, der einen Turmkopf auf weist, mit einem Außenläufer mit Permanentmagneten hoher Pol zahl, mit einem Ständer mit innenliegendem Ständerpaket und einer Ständerwicklung, mit einer zwischen dem Ständer und dem Außenläufer angeordneten Lagerung und mit einem eine Kühlung bewirkenden, außerhalb des Turmkopfes angeordneten Mittel, auf dem das Ständerpaket sitzt und das mit dem Turm kopf verbunden ist.The invention relates to a synchronous generator for a ge unpowered wind energy converter that has a tower head on points, with an external rotor with permanent magnet high pole number, with a stand with internal stand package and a stator winding, with one between the stator and the external rotor arranged storage and with a Cooling effect, arranged outside the tower head Means on which the stand package sits and that with the tower head is connected.
Bekannte Vielpol-Synchrongeneratoren für getriebelose Wind kraftanlagen haben Nachteile bei der Kühlung der aktiven Ge neratorteile. Insbesondere Permanentmagnete sind sehr tempe raturempfindlich und kostenintensiv.Known multi-pole synchronous generators for gearless wind Power plants have disadvantages in cooling the active Ge nerator parts. Permanent magnets in particular are very fast sensitive to nature and expensive.
Zwangskühlung ist bei dem eingangs genannten, aus DE 44 02 184 C2 bekannten Synchrongenerator vorgesehen, welcher zwar Kühlrippen aufweist, die die Oberfläche des innen lie genden Ständers vergrößern, die Kühlrippen aber nicht im di rekten Kühlluftstrom liegen: Das Ständerpaket, in dem der größte Teil der Verlustwärme des Generators entsteht, sitzt auf dem Ständer. Beide Teile sind rotationssymmetrisch. Die Kühlrippen sind radial angeordnet. Die Verlustwärme gelangt durch Wärmeleitung vom Ständerpaket über die Wand des Stän ders in die Kühlrippen. Hier wird durch Verwirbelung der Luft im Windschatten des Generators zwar eine Kühlwirkung er zielt. Diese Wirkung ist aufgrund der fehlenden Durchströ mung jedoch gering.Forced cooling is in the aforementioned, from DE 44 02 184 C2 known synchronous generator provided, which has cooling fins that lie on the inside of the surface stand, but not the cooling fins in di right cooling air flow: The stand package in which the most of the heat loss from the generator is generated on the stand. Both parts are rotationally symmetrical. The Cooling fins are arranged radially. The lost heat arrives by heat conduction from the stand package over the wall of the stand into the cooling fins. Here, by swirling the Air in the slipstream of the generator has a cooling effect aims. This effect is due to the lack of flow but low.
Ausgehend vom vorgenannten Stand der Technik ist es Aufgabe der Erfindung, einen Synchrongenerator der eingangs genann ten Art zu schaffen, der bei einfachem Aufbau eine besonders zuverlässige und wirkungsvolle Außenkühlung aller aktiven Ge neratorteile aufweist.Starting from the aforementioned prior art, it is the task the invention, a synchronous generator called the beginning to create the kind that is particularly special with a simple structure reliable and effective external cooling of all active Ge has nerator parts.
Gelöst wird die der Erfindung zugrundeliegende Aufgabe durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Mit tel.The object on which the invention is based is achieved by the specified in the characterizing part of claim 1 with tel.
Vorteilhaft weitergebildet wird der Erfindungsgegenstand durch die Maßnahmen nach den Ansprüchen 2 bis 5.The subject of the invention is advantageously further developed by the measures according to claims 2 to 5.
Wesen der Erfindung ist, daß das die Kühlung bewirkende Mit tel aus ersten Kühlrippen besteht, die axiale Kühlkanäle bil den, daß die Lagerung zwischen einer Welle und dem Ständer angeordnet ist und daß der Außenläufer eine Beschaufelung trägt, die gleichzeitig die im Generatorluftspalt erzeugten Generatorlasten auf die Welle überträgt und die Kühlluft in die Kühlkanäle fördert.The essence of the invention is that the cooling effect tel consists of first cooling fins, the axial cooling channels bil that the bearing between a shaft and the stator is arranged and that the external rotor is blading carries, which at the same time generated in the generator air gap Transmits generator loads to the shaft and the cooling air in promotes the cooling channels.
Insbesondere ist der Außenläufer als dünnwandiges, rohrförmi ges Joch ausgebildet, das auf seiner Innenseite die Perma nentmagnete trägt und auf der Außenseite mit zweiten Kühlrip pen versehen ist.In particular, the outer rotor is a thin-walled, tubular Ges yoke formed, the inside of the perma Magnets and on the outside with a second cooling rib pen is provided.
Die Lagerung des Synchrongenerators kann in einer Ausfüh rungsvariante gleichzeitig die Wind- und Gewichtskräfte der Rotorblätter aufnehmen und auf den Turmkopf übertragen.The storage of the synchronous generator can be in one version the wind and weight forces of the Pick up rotor blades and transfer them to the tower head.
Der Synchrongenerator kann mit einem aus dünnen Segmentble chen zusammengesetzten Ständerpaket versehen sein, wobei die ersten Kühlrippen wie Speichen nahezu radial angeordnet sind, so daß ein tragfähiges Gewölbe entsteht.The synchronous generator can be made with a thin segment sheet Chen composite stand package provided, the first cooling fins like spokes arranged almost radially are so that a stable vault is created.
Ferner können dritte, an der inneren Oberfläche des Ständer paketes ausgestanzte Kühlrippen vorgesehen sein.Furthermore, third, on the inner surface of the stand punched punched cooling fins can be provided.
Bei der Erfindung wird also mit besonders einfachen Mitteln für eine effektive Kühlung der Staudruck der anströmenden Luft ohne Hindernisse wirkungsvoll ausgenutzt.The invention therefore uses particularly simple means for effective cooling of the dynamic pressure of the incoming Effective use of air without obstacles.
Im Gegensatz zum bekannten Synchrongenerator gemäß DE 44 02 184 C2 wird nämlich bei der Erfindung die anströmende Luft durch Läufer und Ständer geleitet, wobei der Läufer einen Lufteinlaß ähnlich wie bei Strahltriebwerken aufweist, der mit Schaufeln besetzt ist. Die Schaufeln stellen die mechani sche Verbindung zwischen der Welle und dem drehenden Läufer joch her. Sie sind schräg angeordnet, sodaß die Strömungs richtung durch die Schaufelkanäle der geometrischen Addition der Umfangsgeschwindigkeit des Läufers und der axialen An strömgeschwindkeit des Windes entspricht. Insofern erreicht die anströmende Kühlluft weitgehend ungehindert die Kühlkanä le unterhalb des Ständerpakets und durchströmt die Kühlkanä le mit einer Geschwindigkeit, die sich mit zunehmender äuße rer Windgeschwindkeit noch erhöht. Da sich mit zunehmender Windgeschwindigkeit auch die Generatorleistung und mit ihr die Verlustleistung erhöht, ist eine damit einhergehende er höhte Kühlleistung durch höhere Strömungsgeschwindigkeiten auch in den Kühlkanälen erreichbar.In contrast to the known synchronous generator according to DE 44 02 184 C2 namely, the incoming air in the invention guided by runners and stands, the runner one Air intake similar to that of jet engines, the is loaded with shovels. The blades represent the mechani cal connection between the shaft and the rotating rotor yoke here. They are arranged at an angle so that the flow direction through the blade channels of geometric addition the peripheral speed of the rotor and the axial type flow velocity of the wind corresponds. So far the incoming cooling air largely unhindered the cooling channels le underneath the stand package and flows through the cooling channels le with a speed that manifests itself with increasing wind speed increased. Because with increasing Wind speed also the generator power and with it the power loss increases, is an accompanying he increased cooling capacity due to higher flow speeds also accessible in the cooling channels.
Es wird also bei besonders einfachem mechanischen Aufbau ei nes (großen) Vielpolgenerators mit Permanent-Magnet-Erregung eine effektive Kühlung von Ständer und magnetbestücktem Läu fer erreicht. It is egg with a particularly simple mechanical structure nes (large) multi-pole generator with permanent magnet excitation effective cooling of the stand and the magnet-equipped läu fer reached.
Dabei wird die bei kleinen Ventilatoren bekannte Bauform des Außenläufers benutzt. Das ergibt bei Vielpolmaschinen mit Permanentmagneterregung einen kleinen Außendurchmesser bei vorgegebenem Durchmesser des Luftspaltes der Maschine.The design of the external rotor, which is known for small fans, is used. That results in Multi-pole machines with permanent magnet excitation have a small outside diameter for a given one Diameter of the machine's air gap.
Alle bisher gefertigten Vielpolgeneratoren für Windkraftanlagen sind als Innenläufer konzipiert.All multi-pole generators for wind turbines manufactured to date are designed as internal rotors.
Bei getriebelosen Windkraftanlagen ist das vom Generator aufzunehmende Drehmoment sehr goß und entspricht dem von den Rotorblättern abgegebenen Drehmoment von z. B. 200 kNm bei einer Windkraftanlage mit einer Nennleistung von 600 kW. Um ein so großes Drehmoment zu erreichen, muß die elektrische Maschine mit hoher Polzahl und einem entsprechend großen Luftspaltdurchmesser DL versehen sein und eine entsprechende Paketlänge BL aufweisen, wobei das Drehmoment dem Produkt BL × DL 2 etwa proportional ist.In gearless wind turbines, the torque to be absorbed by the generator is very good and corresponds to the torque of z. B. 200 kNm in a wind turbine with a nominal output of 600 kW. In order to achieve such a large torque, the electrical machine must be provided with a large number of poles and a correspondingly large air gap diameter D L and have a corresponding packet length B L , the torque being approximately proportional to the product B L × D L 2 .
Daraus geht hervor, daß eine Vergrößerung von DL besonders vorteilhaft ist, weil dadurch die Paketlänge BL und damit die Länge der Leiter in der Kupferwicklung reduziert wird. Andererseits ist der Außendurchmesser DA des Generators aus Transportgründen zu begrenzen, z. B. unter 3,5 m für den Straßentransport.This shows that an increase in D L is particularly advantageous because it reduces the packet length B L and thus the length of the conductors in the copper winding. On the other hand, the outer diameter D A of the generator must be limited for transport reasons, e.g. B. less than 3.5 m for road transport.
Die Wahl des Außenläuferkonzeptes bei permanentmagnetischer Erregung entsprechend dem
Erfindungsgedanken führt zu besonders vorteilhaften Durchmesserverhältnissen mit einem Außendurchmesser
DA, der nur um einige Zentimeter größer baut, als der Luftspaltdurchmesser DL und völlig unabhängig von der
Höhe HS des Ständerpaketes und der Höhe HK der Kühlkanäle:
The choice of the external rotor concept for permanent magnetic excitation in accordance with the inventive concept leads to particularly advantageous diameter ratios with an outer diameter D A that is only a few centimeters larger than the air gap diameter D L and completely independent of the height H S of the stator core and the height H K Cooling channels:
DA = DL+ 2H
D A = D L + 2H
mit
With
H = HR + HJ + HM + HL H = H R + H J + H M + H L
Gegenüber heute üblichen Großgeneratoren führt die hier vorgeschlagene Kombination von außenliegendem gut kühlbarem Läufer mit darin befestigten Erregermagneten aus hochwirksamen Permanentmagnetmaterial wie Eisen-Neodynium-Bor und einem auf Kühlrippen aufgesetzten innenliegenden Ständerpaket zu einer einfachen kompakten Generatorkonstruktion mit der Möglichkeit der Kühlung von Läufer und Ständer durch die anströmende Außenluft und ohne zusätzliche Kühlgebläse. Weiter ist diese Bauart den außengekühlten elektrischen Maschinen zuzuordnen, da die aktiven Generatorteile wie Wicklung, Erregermagnete und Luftspalt nicht von der Außenluft durchströmt werden. Der Aufbau eines Generators nach diesen Merkmalen ist einfach und führt zu geringen Massen und zu einem relativ kleinen Außendurchmesser (z. B. 3,4 m bei 600 kW).Compared to large generators that are common today, the combination of external one proposed here performs well coolable rotor with exciter magnets made of highly effective permanent magnet material such as Iron-neodynium-boron and an inner stand package placed on cooling fins to a simple one compact generator design with the possibility of cooling the rotor and stator through the incoming outside air and without additional cooling fans. Furthermore, this type is the externally cooled electrical machines because the active generator parts such as winding, excitation magnets and air gap outside air does not flow through. The construction of a generator according to these features is simple and leads to small masses and a relatively small outer diameter (e.g. 3.4 m at 600 kW).
Die Erfindung wird nachfolgend anhand eines Ausführungsbeispieles unter Bezugnahme auf die beigefügten Zeichnungen näher erläutert. Es zeigen:The invention is described below using an exemplary embodiment with reference to the accompanying Drawings explained in more detail. Show it:
Fig. 1 eine Windenergieanlage in der Seitenansicht Fig. 1 shows a wind turbine in side view
Fig. 2 einen Längsschnitt durch den Generator Fig. 2 shows a longitudinal section through the generator
Fig. 3 einen Querschnitt durch die aktiven Generatorteile. Fig. 3 shows a cross section through the active generator parts.
Getriebelose Windenergieanlagen mit horizontaler Rotorachse gemäß Fig. 1 haben einen langsamlaufenden Vielpolgenerator (1), der direkt mit dem Rotor (3) gekoppelt ist. Die von den Rotorblättern (2) erzeugten Drehmomente werden vom Rotor auf das drehende Teil des Generators, den Läufer, ohne Zwischenschaltung von Getrieben übertragen.Gearless wind turbines with a horizontal rotor axis according to FIG. 1 have a slow-running multi-pole generator ( 1 ) which is directly coupled to the rotor ( 3 ). The torques generated by the rotor blades ( 2 ) are transmitted from the rotor to the rotating part of the generator, the rotor, without the interposition of gears.
Zwischen Generator (1) und Turm (5) ist ein Turmkopf (4) angeordnet, in dem auch eine Einrichtung zum Drehen des Rotors in die jeweilige Windrichtung untergebracht ist.A tower head ( 4 ) is arranged between the generator ( 1 ) and tower ( 5 ) and also houses a device for rotating the rotor in the respective wind direction.
Ein Ausführungsbeispiel für den Vielpolgenerator ist in Fig. 2 im Längsschnitt dargestellt. Sein Ständer (7) ist am Turmkopf (4) befestigt und beinhaltet die Lagerung (15) in Form einer üblichen Wälzlageranordnung, die ihrerseits die Weile (16), den Läufer (6) und den Rotor (3) tragen.An embodiment of the multi-pole generator is shown in longitudinal section in FIG. 2. Its stand ( 7 ) is attached to the tower head ( 4 ) and contains the bearing ( 15 ) in the form of a conventional roller bearing arrangement, which in turn carries the shaft ( 16 ), the rotor ( 6 ) and the rotor ( 3 ).
Zum Ständer gehört auch das Ständerpaket (8), in dem die Wicklung (9) untergebracht ist.The stand also includes the stand package ( 8 ) in which the winding ( 9 ) is housed.
Das Joch (12) des Läufers umschließt den Ständer. Es ist als dünnwandiges Stahlrohr ausgeführt und trägt auf der Innenseite Pole (10) aus einzelnen Permanentelementen, die mit dem Joch verklebt sind. Im Luftspalt zwischen Ständerpaket und Läuferjoch sind große magnetische Kräfte in radialer und axialer Richtung wirksam. Diese Kräfte werden von Kühlrippen (11) auf das Ständergehäuse übertragen.The runner's yoke ( 12 ) encloses the stand. It is designed as a thin-walled steel tube and has on the inside poles ( 10 ) made of individual permanent elements that are glued to the yoke. Large magnetic forces are effective in the radial and axial directions in the air gap between the stator core and the rotor yoke. These forces are transmitted from the cooling fins ( 11 ) to the stator housing.
Fig. 3 zeigt einen Teilquerschnitt AB der aktiven Generatorteile und der Kühlkanäle, die durch das geblechte Ständerpaket (8), die Kühlrippen (9) und das Ständergehäuse (7) gebildet werden. Fig. 3 shows a partial cross section AB of the active generator parts and the cooling channels, which are formed by the laminated stator core ( 8 ), the cooling fins ( 9 ) and the stator housing ( 7 ).
Durch geeignete Wahl der Abstände und Höhen der Kühlrippen (11) können die Querschnittsflächen der Kühlkanäle optimiert werden. Insbesondere lassen sich weitere kleine Kühlrippen (17) am Blechpaket kostengünstig durch Ausstanzen anbringen.The cross-sectional areas of the cooling channels can be optimized by a suitable choice of the distances and heights of the cooling fins ( 11 ). In particular, further small cooling fins ( 17 ) can be economically attached to the laminated core by punching out.
Die Kühloberfläche für das Ständerpaket läßt sich durch die Gestalt der kleinen Kühlrippen (17) und der großen Kühlrippen (11) leicht an den Bedarf anpassen, ohne daß die Maschine im Außendurchmesser vergrößert werden müßte.The shape of the small cooling fins ( 17 ) and the large cooling fins ( 11 ) allows the cooling surface for the stand package to be easily adapted to the requirements without the need to enlarge the outside diameter of the machine.
Die Anordnung der Kühlrippen (11) unter einem leichten Winkelversatz (18) zur radialen Richtung von 5° bis 10° ergibt eine besonders tragfähige Gewölbestruktur, bestehend aus dem Ständerpaket (8), dem Ständergehäuse (7) und den Kühlrippen (11). Besonders auch für Drehmomentübertragung ist diese Anordnung günstig. The arrangement of the cooling fins ( 11 ) at a slight angular offset ( 18 ) to the radial direction of 5 ° to 10 ° results in a particularly stable vault structure, consisting of the stand package ( 8 ), the stand housing ( 7 ) and the cooling fins ( 11 ). This arrangement is particularly favorable for torque transmission.
Ersichtlich ermöglicht die Erfindung einen besonders einfach aufgebauten Vielpolsynchrongenerator mit Permanentmagneten als Erregung, bei dem durch die Führung der Außenluft um das Joch und durch Kühlkanäle eine optimale Kürzung erreicht wird bei einem Außendurchmesser, der nur um einige Zentimeter größer ist als der Luftspaltdurchmesser.Obviously, the invention enables a particularly simple multi-pole synchronous generator Permanent magnets as excitation, by guiding the outside air around the yoke and through cooling channels an optimal reduction is achieved with an outer diameter that is only a few centimeters larger than the air gap diameter.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19636591A DE19636591C2 (en) | 1996-09-10 | 1996-09-10 | Synchronous generator for a gearless wind energy converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19636591A DE19636591C2 (en) | 1996-09-10 | 1996-09-10 | Synchronous generator for a gearless wind energy converter |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19636591A1 DE19636591A1 (en) | 1998-03-12 |
DE19636591C2 true DE19636591C2 (en) | 1999-12-09 |
Family
ID=7805062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19636591A Expired - Lifetime DE19636591C2 (en) | 1996-09-10 | 1996-09-10 | Synchronous generator for a gearless wind energy converter |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19636591C2 (en) |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10044262A1 (en) * | 2000-09-07 | 2002-03-21 | Stephan Joeckel | Gear-less wind power system has blade angle adjustment for active vibration damping in drive train, and no mechanical gears but slow synchronous generator directly driven by wind wheel |
DE10102255A1 (en) * | 2001-01-19 | 2002-08-01 | Aloys Wobben | Wind turbine with a hollow shaft for rotor hub and generator |
DE10124268A1 (en) * | 2001-05-18 | 2002-11-28 | Aloys Wobben | Wind power system has cooling ring generator enclosed by gondola housing with heat conducting housing section near ring generator with defined distance between them |
DE10239366A1 (en) * | 2002-08-28 | 2004-03-11 | Klinger, Friedrich, Prof. Dr.-Ing. | Wind turbine |
DE10351844A1 (en) * | 2003-11-06 | 2005-06-09 | Alstom | Wind power plant for producing electricity has electrical components connected to radiator projecting through cutout in shell of gondola |
US7687945B2 (en) | 2004-09-25 | 2010-03-30 | Bluwav Systems LLC. | Method and system for cooling a motor or motor enclosure |
WO2010040659A3 (en) * | 2008-10-08 | 2010-11-04 | Wobben, Aloys | Ring generator |
DE102009026195A1 (en) | 2009-07-17 | 2011-01-27 | Heyde, Michael | Wind power generator for small wind energy plant, has cooling body with large surface arranged inside continuous massively designed fixed axial pipe, and flowing nozzle arranged on side turned to spinner |
US7893555B2 (en) | 2001-09-13 | 2011-02-22 | Wilic S.Ar.L. | Wind power current generator |
US7936102B2 (en) | 2005-11-29 | 2011-05-03 | Wilic S.Ar.L | Magnet holder for permanent magnet rotors of rotating machines |
US7946591B2 (en) | 2005-09-21 | 2011-05-24 | Wilic S.Ar.L. | Combined labyrinth seal and screw-type gasket bearing sealing arrangement |
US8120198B2 (en) | 2008-07-23 | 2012-02-21 | Wilic S.Ar.L. | Wind power turbine |
US8274170B2 (en) | 2009-04-09 | 2012-09-25 | Willic S.A.R.L. | Wind power turbine including a cable bundle guide device |
US8310122B2 (en) | 2005-11-29 | 2012-11-13 | Wilic S.A.R.L. | Core plate stack assembly for permanent magnet rotor or rotating machines |
US8319362B2 (en) | 2008-11-12 | 2012-11-27 | Wilic S.Ar.L. | Wind power turbine with a cooling system |
US8358189B2 (en) | 2009-08-07 | 2013-01-22 | Willic S.Ar.L. | Method and apparatus for activating an electric machine, and electric machine |
US8410623B2 (en) | 2009-06-10 | 2013-04-02 | Wilic S. AR. L. | Wind power electricity generating system and relative control method |
US8492919B2 (en) | 2008-06-19 | 2013-07-23 | Wilic S.Ar.L. | Wind power generator equipped with a cooling system |
US8541902B2 (en) | 2010-02-04 | 2013-09-24 | Wilic S.Ar.L. | Wind power turbine electric generator cooling system and method and wind power turbine comprising such a cooling system |
US8618689B2 (en) | 2009-11-23 | 2013-12-31 | Wilic S.Ar.L. | Wind power turbine for generating electric energy |
US8659867B2 (en) | 2009-04-29 | 2014-02-25 | Wilic S.A.R.L. | Wind power system for generating electric energy |
US8669685B2 (en) | 2008-11-13 | 2014-03-11 | Wilic S.Ar.L. | Wind power turbine for producing electric energy |
US8937398B2 (en) | 2011-03-10 | 2015-01-20 | Wilic S.Ar.L. | Wind turbine rotary electric machine |
US8937397B2 (en) | 2010-03-30 | 2015-01-20 | Wilic S.A.R.L. | Wind power turbine and method of removing a bearing from a wind power turbine |
US8957555B2 (en) | 2011-03-10 | 2015-02-17 | Wilic S.Ar.L. | Wind turbine rotary electric machine |
US8975770B2 (en) | 2010-04-22 | 2015-03-10 | Wilic S.Ar.L. | Wind power turbine electric generator and wind power turbine equipped with an electric generator |
US9006918B2 (en) | 2011-03-10 | 2015-04-14 | Wilic S.A.R.L. | Wind turbine |
Families Citing this family (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001526357A (en) * | 1997-12-08 | 2001-12-18 | シーメンス アクチエンゲゼルシヤフト | Wind power generation facility and method for cooling generator of wind power generation facility |
ES2156706B1 (en) * | 1999-02-09 | 2002-02-16 | Torres Martinez M | IMPROVEMENTS IN THE STRUCTURE OF AEROGENERATORS. |
FR2797921B1 (en) * | 1999-09-01 | 2001-09-28 | Alstom | WIND TURBINE PLATFORM CONSISTING OF THE CARCASS OF AN ELECTRIC GENERATOR |
NL1013129C2 (en) * | 1999-09-24 | 2001-03-27 | Lagerwey Windturbine B V | Windmill. |
CN1426510A (en) | 2000-03-08 | 2003-06-25 | 里索国家实验室 | Method of operating turbine |
EP1710432B1 (en) * | 2000-09-25 | 2014-04-30 | STX Heavy Industries Co., Ltd. | Wind power generator |
EP1257037A1 (en) * | 2001-05-10 | 2002-11-13 | Va Tech Elin EBG Motoren GmbH | Permanently magnetized electric machine |
US6777851B2 (en) * | 2001-10-01 | 2004-08-17 | Wavecrest Laboratories, Llc | Generator having axially aligned stator poles and/or rotor poles |
US20050104470A1 (en) * | 2003-11-13 | 2005-05-19 | Perkins William P. | Integrated stator-axle for in-wheel motor of an electric vehicle |
DE102004018758A1 (en) | 2004-04-16 | 2005-11-03 | Klinger, Friedrich, Prof. Dr.-Ing. | Tower head of a wind turbine |
US7154193B2 (en) | 2004-09-27 | 2006-12-26 | General Electric Company | Electrical machine with double-sided stator |
US7154192B2 (en) | 2004-09-27 | 2006-12-26 | General Electric Company | Electrical machine with double-sided lamination stack |
US7154191B2 (en) | 2004-06-30 | 2006-12-26 | General Electric Company | Electrical machine with double-sided rotor |
DE102004064007B4 (en) | 2004-09-24 | 2009-08-20 | Aloys Wobben | Wind turbine with a generator cooling |
US7839048B2 (en) | 2004-09-27 | 2010-11-23 | General Electric Company | Electrical machine with double-sided stator |
US7548008B2 (en) | 2004-09-27 | 2009-06-16 | General Electric Company | Electrical machine with double-sided lamination stack |
US7692357B2 (en) | 2004-12-16 | 2010-04-06 | General Electric Company | Electrical machines and assemblies including a yokeless stator with modular lamination stacks |
US7235895B2 (en) * | 2005-10-13 | 2007-06-26 | General Electric Company | Method and apparatus for gravity induced thermal energy dissipation |
US7245042B1 (en) | 2005-11-25 | 2007-07-17 | Simnacher Larry W | Auxiliary wind energy generation from a wind power generation apparatus |
DE102006013590A1 (en) * | 2006-03-22 | 2007-09-27 | Siemens Ag | Electric machine, in particular a generator |
US8025480B1 (en) | 2007-06-08 | 2011-09-27 | Weldon W. Alders | Wind turbine blades with avian avoidance surfaces |
ES2369436B1 (en) * | 2008-04-10 | 2012-09-17 | M. Torres Olvega Industrial, S.L. | STRUCTURE OF SUPPORT AND EXCHANGE OF HEAT OF THE ELECTRICAL STATOR OF AN AEROGENERATOR. |
DK2157314T4 (en) | 2008-08-20 | 2019-04-08 | Siemens Ag | Windmill |
EP2164154A1 (en) * | 2008-09-15 | 2010-03-17 | Siemens Aktiengesellschaft | Stator arrangement, generator and wind turbine |
NL1036733C2 (en) | 2009-03-19 | 2010-09-21 | Darwind Holding B V | A wind turbine and a direct-drive generator. |
ES2394136T3 (en) | 2009-03-23 | 2013-01-22 | Abb Oy | Arrangement and method to cool an electric machine |
CN102577044B (en) | 2009-10-21 | 2015-04-29 | 西门子公司 | Generator |
EP2320540A1 (en) * | 2009-11-05 | 2011-05-11 | Siemens Aktiengesellschaft | Arrangement for cooling of an electrical machine |
EP2395630A1 (en) * | 2010-06-10 | 2011-12-14 | Siemens Aktiengesellschaft | A permanent magnet machine, in particular a generator for a wind turbine |
DK2434150T4 (en) † | 2010-09-27 | 2016-12-05 | Siemens Ag | Three row roller bearing, especially for a wind turbine |
DK2445087T3 (en) * | 2010-10-13 | 2013-01-21 | Siemens Ag | A generator, especially for a wind turbine |
HRP20110305A2 (en) | 2011-04-26 | 2012-10-31 | Daniel Zrno | Synchronous multi-pole motor without brushes with stationary armature and excitation windings |
CN102394540B (en) * | 2011-07-22 | 2013-08-07 | 广西银河风力发电有限公司 | Uniaxially coupled double-wind driven generator |
RU2014133165A (en) * | 2012-01-13 | 2016-03-10 | Ювинэнерджи Гмбх | WIND TURBINE COOLING SYSTEM |
DE102012208372A1 (en) * | 2012-05-18 | 2013-11-21 | Siemens Aktiengesellschaft | Wind turbine |
DE102012208549A1 (en) * | 2012-05-22 | 2013-11-28 | Wobben Properties Gmbh | Optimized synchronous generator of a gearless wind turbine |
DE102012208547A1 (en) | 2012-05-22 | 2013-11-28 | Wobben Properties Gmbh | Synchronous generator of a gearless wind turbine |
EP2713478B1 (en) * | 2012-09-27 | 2019-11-13 | Siemens Gamesa Renewable Energy A/S | Outer structure of a generator |
ITVR20130105A1 (en) * | 2013-05-03 | 2014-11-04 | Treccani Engineering S R L | WIND TURBINE |
EP2902619B1 (en) * | 2014-01-29 | 2018-01-17 | Siemens Aktiengesellschaft | Cooling arrangement for a direct drive wind turbine |
CN110635587B (en) | 2018-09-14 | 2020-12-29 | 北京金风科创风电设备有限公司 | Stator assembly and motor having the same |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE626123C (en) * | 1936-02-20 | Sachsenwerk Licht & Kraft Ag | Air-cooled stand for housing-less electrical machines | |
DE1971614U (en) * | 1967-08-25 | 1967-11-02 | Fuchs Fa Otto | HOUSING WITH COOLING FIBS MADE OF LIGHT ALLOY. |
DE2542483A1 (en) * | 1975-09-24 | 1977-04-14 | Lloyd Dynamowerke Gmbh | Electrical machine cooling ribs - are fastened to stator exterior with adhesive and consist of profiled section aluminium extrusions |
DE3035776A1 (en) * | 1980-09-23 | 1982-06-03 | Robert Bosch Gmbh, 7000 Stuttgart | Electric machine with external rotor - has permanent magnet in rotor shroud, including rotor bottom, with rotor assembly mounted in bearing shield |
DE4402184C2 (en) * | 1994-01-26 | 1995-11-23 | Friedrich Prof Dr Ing Klinger | Multi-pole synchronous generator for gearless horizontal-axis wind turbines with nominal powers of up to several megawatts |
-
1996
- 1996-09-10 DE DE19636591A patent/DE19636591C2/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE626123C (en) * | 1936-02-20 | Sachsenwerk Licht & Kraft Ag | Air-cooled stand for housing-less electrical machines | |
DE1971614U (en) * | 1967-08-25 | 1967-11-02 | Fuchs Fa Otto | HOUSING WITH COOLING FIBS MADE OF LIGHT ALLOY. |
DE2542483A1 (en) * | 1975-09-24 | 1977-04-14 | Lloyd Dynamowerke Gmbh | Electrical machine cooling ribs - are fastened to stator exterior with adhesive and consist of profiled section aluminium extrusions |
DE3035776A1 (en) * | 1980-09-23 | 1982-06-03 | Robert Bosch Gmbh, 7000 Stuttgart | Electric machine with external rotor - has permanent magnet in rotor shroud, including rotor bottom, with rotor assembly mounted in bearing shield |
DE4402184C2 (en) * | 1994-01-26 | 1995-11-23 | Friedrich Prof Dr Ing Klinger | Multi-pole synchronous generator for gearless horizontal-axis wind turbines with nominal powers of up to several megawatts |
Cited By (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10044262A1 (en) * | 2000-09-07 | 2002-03-21 | Stephan Joeckel | Gear-less wind power system has blade angle adjustment for active vibration damping in drive train, and no mechanical gears but slow synchronous generator directly driven by wind wheel |
DE10102255A1 (en) * | 2001-01-19 | 2002-08-01 | Aloys Wobben | Wind turbine with a hollow shaft for rotor hub and generator |
US7084522B2 (en) | 2001-01-19 | 2006-08-01 | Aloys Wobben | Wind energy unit comprising a hollow shaft for rotor hub and generator |
DE10124268A1 (en) * | 2001-05-18 | 2002-11-28 | Aloys Wobben | Wind power system has cooling ring generator enclosed by gondola housing with heat conducting housing section near ring generator with defined distance between them |
DE10124268B4 (en) * | 2001-05-18 | 2006-02-09 | Wobben, Aloys, Dipl.-Ing. | generator cooling |
US7893555B2 (en) | 2001-09-13 | 2011-02-22 | Wilic S.Ar.L. | Wind power current generator |
DE10239366A1 (en) * | 2002-08-28 | 2004-03-11 | Klinger, Friedrich, Prof. Dr.-Ing. | Wind turbine |
EP1394406A3 (en) * | 2002-08-28 | 2007-03-14 | Friedrich Prof. Dr.-Ing. Klinger | Gearless wind turbine with multiple generator |
DE10351844A1 (en) * | 2003-11-06 | 2005-06-09 | Alstom | Wind power plant for producing electricity has electrical components connected to radiator projecting through cutout in shell of gondola |
US7687945B2 (en) | 2004-09-25 | 2010-03-30 | Bluwav Systems LLC. | Method and system for cooling a motor or motor enclosure |
US7946591B2 (en) | 2005-09-21 | 2011-05-24 | Wilic S.Ar.L. | Combined labyrinth seal and screw-type gasket bearing sealing arrangement |
US8310122B2 (en) | 2005-11-29 | 2012-11-13 | Wilic S.A.R.L. | Core plate stack assembly for permanent magnet rotor or rotating machines |
US7936102B2 (en) | 2005-11-29 | 2011-05-03 | Wilic S.Ar.L | Magnet holder for permanent magnet rotors of rotating machines |
US8492919B2 (en) | 2008-06-19 | 2013-07-23 | Wilic S.Ar.L. | Wind power generator equipped with a cooling system |
US9312741B2 (en) | 2008-06-19 | 2016-04-12 | Windfin B.V. | Wind power generator equipped with a cooling system |
US8120198B2 (en) | 2008-07-23 | 2012-02-21 | Wilic S.Ar.L. | Wind power turbine |
WO2010040659A3 (en) * | 2008-10-08 | 2010-11-04 | Wobben, Aloys | Ring generator |
US8319362B2 (en) | 2008-11-12 | 2012-11-27 | Wilic S.Ar.L. | Wind power turbine with a cooling system |
US8669685B2 (en) | 2008-11-13 | 2014-03-11 | Wilic S.Ar.L. | Wind power turbine for producing electric energy |
US8274170B2 (en) | 2009-04-09 | 2012-09-25 | Willic S.A.R.L. | Wind power turbine including a cable bundle guide device |
US8659867B2 (en) | 2009-04-29 | 2014-02-25 | Wilic S.A.R.L. | Wind power system for generating electric energy |
US8410623B2 (en) | 2009-06-10 | 2013-04-02 | Wilic S. AR. L. | Wind power electricity generating system and relative control method |
DE102009026195B4 (en) * | 2009-07-17 | 2015-10-01 | Michael Heyde | Wind power generator with external rotor and internal cooling |
DE102009026195A1 (en) | 2009-07-17 | 2011-01-27 | Heyde, Michael | Wind power generator for small wind energy plant, has cooling body with large surface arranged inside continuous massively designed fixed axial pipe, and flowing nozzle arranged on side turned to spinner |
US8358189B2 (en) | 2009-08-07 | 2013-01-22 | Willic S.Ar.L. | Method and apparatus for activating an electric machine, and electric machine |
US8810347B2 (en) | 2009-08-07 | 2014-08-19 | Wilic S.Ar.L | Method and apparatus for activating an electric machine, and electric machine |
US8618689B2 (en) | 2009-11-23 | 2013-12-31 | Wilic S.Ar.L. | Wind power turbine for generating electric energy |
US8541902B2 (en) | 2010-02-04 | 2013-09-24 | Wilic S.Ar.L. | Wind power turbine electric generator cooling system and method and wind power turbine comprising such a cooling system |
US8937397B2 (en) | 2010-03-30 | 2015-01-20 | Wilic S.A.R.L. | Wind power turbine and method of removing a bearing from a wind power turbine |
US8975770B2 (en) | 2010-04-22 | 2015-03-10 | Wilic S.Ar.L. | Wind power turbine electric generator and wind power turbine equipped with an electric generator |
US8957555B2 (en) | 2011-03-10 | 2015-02-17 | Wilic S.Ar.L. | Wind turbine rotary electric machine |
US9006918B2 (en) | 2011-03-10 | 2015-04-14 | Wilic S.A.R.L. | Wind turbine |
US8937398B2 (en) | 2011-03-10 | 2015-01-20 | Wilic S.Ar.L. | Wind turbine rotary electric machine |
Also Published As
Publication number | Publication date |
---|---|
DE19636591A1 (en) | 1998-03-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE19636591C2 (en) | Synchronous generator for a gearless wind energy converter | |
DE69930040T2 (en) | Electric machine with especially for high speeds adapted rotor | |
EP1586769B1 (en) | Nacelle on a wind turbine mast | |
DE102005060180A1 (en) | Electric machines and arrangements with a yokeless stator with modular stacks of sheet metal | |
WO2011051228A2 (en) | Wind power generator having an internal coolant circuit | |
EP2089953B1 (en) | Electric machine | |
EP2413483A1 (en) | Electric drive device for an aircraft | |
EP3338344A1 (en) | Cooling an electric rotating machine | |
EP2379879B1 (en) | Generator arrangement for a wind power plant | |
EP0854560A1 (en) | Heat dissipation concept for electric drive | |
EP2122809A2 (en) | Electric machine | |
EP1145409B1 (en) | Electric machine with cooled rotor | |
DE102021101408A1 (en) | ELECTRICAL MACHINE, POWER SYSTEM AND ITS USE | |
DE19919040C2 (en) | Synchronous or asynchronous machine for large wind turbines | |
EP0786402B1 (en) | Propeller unit in a gondola | |
EP1759987B1 (en) | Electric boat drive | |
DE259034C (en) | ||
EP3308449B1 (en) | Stator ring for an electric generator, and generator and wind turbine having said stator ring | |
DE19821632A1 (en) | Induction machine with excitation by rotating permanent magnet ring | |
WO2017012810A1 (en) | Annular stator, generator and wind turbine equipped therewith | |
EP2226920A2 (en) | Co-generation unit with a combustion piston engine and an electric machine | |
DE3050453C2 (en) | Rotor of a high-speed electrical machine | |
EP1032113A1 (en) | Cooling for an electric machine, in particular for a rotating field machine | |
EP3807517B1 (en) | Turbine | |
DE10138211A1 (en) | Magnetic centering torque motor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8110 | Request for examination paragraph 44 | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: VENSYS ENERGIESYSTEME GMBH & CO. KG, 66115 SAARBRUECKEN |
|
8381 | Inventor (new situation) |
Inventor name: KLINGER, FRIEDRICH, PROF. DR.-ING., 66119 SAARBR?C |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: VENSYS ENERGY AG, 66539 NEUNKIRCHEN, DE |
|
R082 | Change of representative |
Representative=s name: PATENTANWAELTE BERNHARDT/WOLFF PARTNERSCHAFT, DE |
|
R071 | Expiry of right |