IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0884969
(2005-02-22)
|
등록번호 |
US-8147209
(2012-04-03)
|
국제출원번호 |
PCT/IB2005/050639
(2005-02-22)
|
§371/§102 date |
20080415
(20080415)
|
국제공개번호 |
WO2006/090215
(2006-08-31)
|
발명자
/ 주소 |
- Godsk, Kristian Balschmidt
- Nielsen, Thomas S. Bjertrup
|
출원인 / 주소 |
|
대리인 / 주소 |
Wood, Herron & Evans, L.L.P.
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
8 |
초록
▼
A wind turbine comprising a wind turbine blade with high lift and/or low solidity is provided. The blade is directed towards pitch regulated wind turbines, which are operated at variable rotor speed and have blades longer than about 30 meters. The blade is for example advantageous in that it may pro
A wind turbine comprising a wind turbine blade with high lift and/or low solidity is provided. The blade is directed towards pitch regulated wind turbines, which are operated at variable rotor speed and have blades longer than about 30 meters. The blade is for example advantageous in that it may provide reduced extreme and fatigue loads at the same or near the same power production.
대표청구항
▼
1. A wind turbine operable by pitch regulation and variable rotor speed, comprising at least one wind turbine blade longer than 30 meters, where a combined radius specific solidity Solr is below a linear interpolation between: Solr=0.035 at blade radius r=30% of the rotor radius RSolr=0.025 at blade
1. A wind turbine operable by pitch regulation and variable rotor speed, comprising at least one wind turbine blade longer than 30 meters, where a combined radius specific solidity Solr is below a linear interpolation between: Solr=0.035 at blade radius r=30% of the rotor radius RSolr=0.025 at blade radius r=50% of the rotor radius RSolr=0.018 at blade radius r=70% of the rotor radius RSolr=0.011 at blade radius r=90% of the rotor radius R,for at least 50 radius-% of the blade(s) between blade radius r=30-90% of the rotor radius R,where the maximum lift coefficient CL,max>1.45 for a Reynolds number Re=1.5×106. 2. The wind turbine according to claim 1, where the combined radius specific solidity is below a linear interpolation between: Solr=0.034 at blade radius r=30% of the rotor radius RSolr=0.022 at blade radius r=50% of the rotor radius RSolr=0.016 at blade radius r=70% of the rotor radius RSolr=0.010 at blade radius r=90% of the rotor radius R,for at least 50 radius-% of the blade(s) between blade radius r=30-90% of the rotor radius R. 3. The wind turbine according to claim 2, where the combined radius specific solidity is below a linear interpolation between: Solr=0.034 at blade radius r=30% of the rotor radius RSolr=0.022 at blade radius r=50% of the rotor radius RSolr=0.016 at blade radius r=70% of the rotor radius RSolr=0.010 at blade radius r=90% of the rotor radius R,for at least 75 radius-% of the blade(s) between blade radius r=30-90% of the rotor radius R. 4. The wind turbine according to claim 2, where the combined radius specific solidity is below a linear interpolation between: Solr=0.034 at blade radius r=30% of the rotor radius RSolr=0.022 at blade radius r=50% of the rotor radius RSolr=0.016 at blade radius r=70% of the rotor radius RSolr=0.010 at blade radius r=90% of the rotor radius R,for at least 95 radius-% of the blade(s) between blade radius r=30-90% of the rotor radius R. 5. The wind turbine according to claim 1, wherein the maximum lift coefficient CL,max>1.5, for Re=1.5×106, and/orthe maximum lift coefficient CL,max>1.58, for Re=3.0×106, and/orthe maximum lift coefficient CL,max>1.64, for Re=5.0×106 and/orthe maximum lift coefficient CL,max>1.68, for Re=7.0×106, and/orthe maximum lift coefficient CL,max>1.71, for Re=9.0×106, and/orthe maximum lift coefficient CL,max>1.73, for Re=11.0×106 where CL,max is valid for a two-dimensional flow passing a smooth profile surface for at least 80 radius-% of the blade. 6. The wind turbine according to claim 5, wherein CL,max is valid for a two-dimensional flow passing a smooth profile surface for at least 90 radius-% of the blade. 7. The wind turbine according to claim 1, wherein the maximum lift coefficient, CL,max>1.45 for Re=1.5×106, and/orthe maximum lift coefficient, CL,max>1.5 for Re=3.0×106, andorthe maximum lift coefficient, CL,max>1.6 for Re=5.0×106, and/or,the maximum lift coefficient, CL,max>1.65 for Re=7.0×106, and/orthe maximum lift coefficient, CL,max>1.68 for Re=9.0×106, and/orthe maximum lift coefficient, CL,max>1.7 for Re=11.0×106 where CL,max is valid for a two-dimensional flow passing a smooth profile surface, for profiles in the radius range corresponding to t/c15% with the proviso that r15% with the proviso that r1.5, for Re=1.5×106, and/orthe maximum lift coefficient CL,max>1.58, for Re=3.0×106, and/orthe maximum lift coefficient CL,max>1.64, for Re=5.0×106, and/orthe maximum lift coefficient CL,max>1.68, for Re=7.0×106, and/orthe maximum lift coefficient CL,max>1.71, for Re=9.0×106, and/orthe maximum lift coefficient CL,max>1.73, for Re=11.0×106 where CL,max is valid for a two-dimensional flow passing a smooth profile surface, for profiles in the radius range corresponding to t/c15% with the proviso that r15% with the proviso that r1.3 for Re=3.0-11×106 corresponding to two-dimensional flow passing a smooth profile surface and for t/c96% of R. 15. The wind turbine according to claim 14, wherein the CL,d>1.3 for Re=3.0-11×106 corresponding to two-dimensional flow passing a smooth profile surface and for t/c96% of R. 16. The wind turbine according to claim 14 and operable by pitch regulation and variable rotor speed, having at least one wind turbine blade longer than 30 meters, wherein the CL,d>1.4 for Re=3.0-11×106 corresponding to two-dimensional flow passing a smooth profile surface and for t/c96% of R. 17. The wind turbine according to claim 16 wherein the CL,d>1.4 for Re=3.0-11×106 corresponding to two-dimensional flow passing a smooth profile surface and for t/c96% of R. 18. The wind turbine, according to claim 1, operable by pitch regulation and variable rotor speed, having at least one wind turbine blade longer than 30 meters, wherein the CL,d>1.3 for Re=3.0-11×106 corresponding to two-dimensional flow passing a smooth profile surface and for at least 90% of the blade in the range between blade radius r=30% of R to r=90% of R. 19. The wind turbine according to claim 18, wherein the CL,d>1.3 for Re=3.0-11×106 corresponding to two-dimensional flow passing a smooth profile surface and for at least 90% of the blade in the range between blade radius r=50% of R to r=80% of R. 20. The wind turbine according to claim 18 and operable by pitch regulation and variable rotor speed, having at least one wind turbine blade longer than 30 meters, wherein the CL,d>1.4 for Re=3.0-11×106 corresponding to two-dimensional flow passing a smooth profile surface and for at least 90% of the blade in the range between blade radius r=30% of R to r=90% of R. 21. The wind turbine according to claim 20, wherein the CL,d>1.4 for Re=3.0-11×106 corresponding to two-dimensional flow passing a smooth profile surface and for at least 90% of the blade in the range between blade radius r=50% of R to r=80% of R. 22. The wind turbine according to claim 1, wherein said at least one wind turbine blade comprises carbon fibres. 23. The wind turbine according to claim 22, wherein the carbon fibres are main reinforcement fibres in at least one section of the wind turbine blade. 24. The wind turbine according to claim 22, wherein the carbon fibres are pultruded or belt pressed cured members. 25. A method of operation of a wind turbine according to claim 1 under noise reduction condition comprising the steps of: adjusting the rotation speed to below nominal rotation speed, andadjusting the pitch angle to minimise the decrease in annual yield. 26. The wind turbine according to claim 1, wherein the maximum lift coefficient, CL,max>1.4 for Re=1.5×106, and/orthe maximum lift coefficient, CL,max>1.5 for Re=3.0×106, and/orthe maximum lift coefficient, CL,max>1.6 for Re=5.0×106, and/orthe maximum lift coefficient, CL,max>1.65 for Re=7.0×106, and/orthe maximum lift coefficient, CL,max>1.68 for Re=9.0×106, and/orthe maximum lift coefficient, CL,max>1.7 for Re=11.0×106,where CL,max is valid for a two-dimensional flow passing a smooth profile surface, for at least 80 radius-% of the blade. 27. The wind turbine according to claim 26, wherein CL,max is valid for a two-dimensional flow passing a smooth profile surface, for at least 90 radius-% of the blade. 28. The wind turbine according to claim 1, where the combined radius specific solidity is below a linear interpolation between: Solr=0.035 at blade radius r=30% of the rotor radius RSolr=0.025 at blade radius r=50% of the rotor radius RSolr=0.018 at blade radius r=70% of the rotor radius RSolr=0.011 at blade radius r=90% of the rotor radius R,for at least 75 radius-% of the blade(s) between blade radius r=30-90% of the rotor radius R. 29. The wind turbine according to claim 1, where the combined radius specific solidity is below a linear interpolation between: Solr=0.035 at blade radius r=30% of the rotor radius RSolr=0.025 at blade radius r=50% of the rotor radius RSolr=0.018 at blade radius r=70% of the rotor radius RSolr=0.011 at blade radius r=90% of the rotor radius R,for at least 95 radius-% of the blade(s) between blade radius r=30-90% of the rotor radius R.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.