IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0307474
(2007-07-06)
|
등록번호 |
US-8419363
(2013-04-16)
|
우선권정보 |
DK-2006 00942 (2006-07-07) |
국제출원번호 |
PCT/DK2007/050085
(2007-07-06)
|
§371/§102 date |
20090202
(20090202)
|
국제공개번호 |
WO2008/003330
(2008-01-10)
|
발명자
/ 주소 |
- Madsen, Helge Aagaard
- Rasmussen, Flemming
- Buhl, Thomas
- Hansen, Morten Hartvig
- Bak, Dan Christian
- Gaunaa, Mac
- Andersen, Peter Bjørn
|
출원인 / 주소 |
- Danmarks Tekniske Universitet
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
3 |
초록
▼
A deformable trailing edge section (3) of a wind turbine blade (1), at least part of said section (3) being formed in a deformable material. The blade section (3) comprises one or more cavities (5) being in connection with or connectable to a fluid source in a way that allows fluid to stream from th
A deformable trailing edge section (3) of a wind turbine blade (1), at least part of said section (3) being formed in a deformable material. The blade section (3) comprises one or more cavities (5) being in connection with or connectable to a fluid source in a way that allows fluid to stream from the fluid source to the cavity or cavities (5), so that the shape of the deformable trailing edge section (3) and thereby the camber of the blade cross-section (3) is changeable by the pressure of fluid in the cavity or cavities (5) with insignificant changes of the thickness and chord wise length of the deformable trailing edge section. Furthermore a wind turbine blade (1) is described, having at least one of such trailing edge section (s) (3) and to a system (11) for mounting a blade section (3) on a main blade (2) of a wind turbine. In addition a method of manufacturing a deformable trailing edge section (3) of a wind turbine blade (1) is disclosed.
대표청구항
▼
1. A deformable trailing edge blade section for a wind turbine blade, at least part of said deformable trailing edge blade section being formed from a deformable material, said deformable trailing edge blade section comprising: a trailing edge; andcavities in connection with or connectable to a flui
1. A deformable trailing edge blade section for a wind turbine blade, at least part of said deformable trailing edge blade section being formed from a deformable material, said deformable trailing edge blade section comprising: a trailing edge; andcavities in connection with or connectable to a fluid source in a way that allows fluid to flow from the fluid source to the cavities, so that a shape of the deformable trailing edge blade section and thereby a camber of the blade cross-section is changeable by a pressure of fluid in the cavities with insignificant changes in thickness and chord-wise length of the deformable trailing edge blade section,wherein a length of the deformable trailing edge blade section in a chord wise direction is between 1 and 30%, andwherein the cavities are offset from a camber line of the blade cross-section so that alteration of the pressure of fluid in the cavities results in bending of the deformable trailing edge blade section and thereby movement of the trailing edge. 2. A deformable trailing edge blade section according to claim 1, wherein the cavities are separately or collectively connected to the fluid source. 3. A deformable trailing edge blade section according to claim 1, wherein the cavities form two systems, each of the two systems being a single cavity or multiple interconnected cavities or multiple cavities with a same pressure. 4. A deformable trailing edge blade section according to claim 3, wherein one or two of the system(s) is/are constituted by subsystems, and wherein a pressure in each subsystem can be varied independently of a pressure in other subsystem(s). 5. A deformable trailing edge blade section according to claim 1, wherein the cavities are in connection with or connectable to two or more fluid sources of the fluid source. 6. A deformable trailing edge blade section according to claim 1, wherein an initial un-deformed shape of the deformable trailing edge blade section is such that the camber, and thereby aerodynamic forces, are reduced if pressures in all the cavities equals ambient pressure to ensure fault-safe operation in case of fluid pressure loss or loss of control signals. 7. A deformable trailing edge blade section according to claim 1, wherein the deformable material is an elastic material. 8. A deformable trailing edge blade section according to claim 1, wherein the deformable material is foam made from a polymer. 9. A deformable trailing edge blade section according to claim 1, wherein the deformable material is a composite made from plastic with fiber reinforcements to strengthen the deformable material in selected areas and directions to control deformation of the selected areas subject to the pressure of fluid. 10. A deformable trailing edge blade section according to claim 1, wherein the deformable trailing edge blade section is one piece. 11. A deformable trailing edge blade section according to claim 1, wherein the deformable trailing edge blade section is two or more subsections. 12. A deformable trailing edge blade section according to claim 11, wherein a plate or membrane is between the subsections. 13. A deformable trailing edge blade section according to claim 1, further comprising a reinforcing element in a span wise direction of the deformable trailing edge blade section. 14. A deformable trailing edge blade section according to claim 1, further comprising a flexible outer layer. 15. A deformable trailing edge blade section according to claim 1, further comprising an element for mounting the deformable trailing edge blade section to a main blade. 16. A wind turbine blade, comprising a main blade and at least one deformable trailing edge blade section according to claim 1. 17. A wind turbine blade according to claim 16, further comprising at least one passive trailing edge section having a shape which is not deformable by changing pressure of a fluid present within the passive trailing edge section. 18. A wind turbine blade according to claim 16, further comprising a system for mounting at least the deformable trailing edge blade section on the main blade. 19. A system for mounting a blade section on a main blade of a wind turbine blade, said system comprising: at least one element fastened to the blade section,at least one element fastened to the main blade, andat least one interconnecting element establishing an assembling of the wind turbine blade, wherein the blade section is a deformable trailing edge blade section according to claim 1. 20. A system for mounting a blade section on a main blade of a wind turbine blade, said system comprising: at least one element fastened to the blade section,at least one element fastened to the main blade, andat least one interconnecting element establishing an assembling of the wind turbine blade, wherein the blade section is a deformable trailing edge blade section, and wherein the wind turbine blade is a wind turbine blade according to claim 16. 21. A wind turbine blade with one or more active trailing edge sections and one or more passive trailing edge sections where one or more sensors is/are placed in appropriate positions on the wind turbine blade to monitor an operational state of the wind turbine blade, and where signals from the one or more sensors are used as input to a control system sending control signals to the one or more active trailing edge sections, wherein the one or more active trailing edge section(s) is/are deformable trailing edge blade section(s) according to claim 1. 22. A deformable trailing edge blade section according to claim 1, wherein the length of the deformable trailing edge blade section in the chord wise direction is between 1 and 15%. 23. A deformable trailing edge blade section according to claim 1, wherein the length of the deformable trailing edge blade section in the chord wise direction is between 1 and 10%. 24. A deformable trailing edge blade section according to claim 3, wherein the two systems are placed in an upper and a lower part of the trailing edge blade section, respectively, and wherein establishment of pressure differences between the fluid in the upper and lower parts results in bending of the deformable trailing edge blade section. 25. A deformable trailing edge blade section according to claim 7, wherein the elastic material is selected from rubber, natural rubber, polypropylene, polyethylene, nylon, elastomers, or aramid. 26. A deformable trailing edge blade section according to claim 9, wherein the fiber reinforcements are glass or carbon. 27. A deformable trailing edge blade section according to claim 9, wherein the selected areas and directions are around one or more cavities. 28. A deformable trailing edge blade section according to claim 11, wherein glue or vulcanization connects the two or more subsections together. 29. A deformable trailing edge blade section according to claim 21, wherein the one or more sensors is/are selected from the a group consisting of: accelerometers, strain gauges, surface pressure devices, flow devices, fibre optics, smart materials, or the trailing edge. 30. A deformable trailing edge blade section according to claim 29, wherein the flow devices comprise pitot tubes. 31. A deformable trailing edge blade section according to claim 1, wherein the cavities are on a same side of the camber line. 32. A deformable trailing edge blade section according to claim 1, wherein the cavities comprise a single row of cavities.
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