IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0266698
(2010-04-29)
|
등록번호 |
US-8659867
(2014-02-25)
|
우선권정보 |
IT-MI2009A0725 (2009-04-29) |
국제출원번호 |
PCT/EP2010/055860
(2010-04-29)
|
§371/§102 date |
20120210
(20120210)
|
국제공개번호 |
WO2010/125160
(2010-11-04)
|
발명자
/ 주소 |
- Casazza, Matteo
- Martin, Schwarz
|
출원인 / 주소 |
|
대리인 / 주소 |
Neal, Gerber & Eisenberg LLP
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
215 |
초록
▼
A wind power system having a tower, a nacelle fitted to the tower to rotate about a first axis, a hub fitted to the nacelle to rotate about a second axis, and at least one blade fitted to the hub to rotate about a third axis, and wherein an elastic conducting member is positioned between the blade a
A wind power system having a tower, a nacelle fitted to the tower to rotate about a first axis, a hub fitted to the nacelle to rotate about a second axis, and at least one blade fitted to the hub to rotate about a third axis, and wherein an elastic conducting member is positioned between the blade and the nacelle to connect the blade electrically to the nacelle.
대표청구항
▼
1. A wind power system for generating electric energy, said system comprising: a tower;a nacelle fitted to the tower to rotate about a first axis;a hub fitted to the nacelle to rotate about a second axis;blade fitted to the hub to rotate about a third axis; anda safety device contacting a first area
1. A wind power system for generating electric energy, said system comprising: a tower;a nacelle fitted to the tower to rotate about a first axis;a hub fitted to the nacelle to rotate about a second axis;blade fitted to the hub to rotate about a third axis; anda safety device contacting a first area at a root of the blade and a second area of the nacelle to connect the blade electrically to the nacelle, the safety device being deformable to compensate for variations in distance between the first area and the second area. 2. The wind power system of claim 1, wherein the safety device is deformable elastically. 3. The wind power system of claim 1, wherein the safety device is selectively adjustable. 4. The wind power system of claim 1, which includes a shell which is electrically insulated from the hub, extends about the hub and the root of the blade and includes an annular edge adjacent to the nacelle and an opening housing the root of the blade; and wherein the safety device includes a first slide supported by the shell at said opening in sliding contact with the root of the blade, and a second slide supported by the shell at said annular edge in sliding contact with the nacelle. 5. The wind power system of claim 4, wherein the first and the second slides are respectively elastically pressed against the root of the blade and the nacelle. 6. The wind power system of claim 5, wherein the first slide is supported by an arm pivotally connected to the shell. 7. The wind power system of claim 4, wherein the second slide is slideably mounted in a guide, which is arranged to allow a radial displacement of the second slide. 8. The wind power system of claim 4, wherein the first and the second slides are connected to one another by a wire. 9. The wind power system of claim 4, wherein the safety device includes a comb which is arranged at the annular edge in close proximity to the second slide, and which faces the nacelle. 10. The wind power system of claim 1, wherein the safety device is fixed adjustably to the first area, and is in sliding contact with the second area. 11. The wind power system of claim 10, wherein the safety device includes an elastically deformable supporting structure, a first conducting strap supported by the supporting structure, and is positioned contacting the second area; and at least one conducting member for connecting the first conducting strap to the blade at the first area. 12. The wind power system of claim 11, wherein the first conducting strap extends along an arc about the third axis, to ensure electrical contact regardless of the operating configuration of the blade with respect to the hub. 13. The wind power system of claim 11, wherein the supporting structure is made of fiberglass. 14. The wind power system of claim 11, wherein the supporting structure includes connecting arms; the conducting member is in the supporting structure; and said connecting arms are elastically deformable. 15. The wind power system of claim 14, wherein the connecting arms are elastically bendable. 16. The wind power system of claim 1, wherein the safety device includes a first arm connected mechanically and electrically to the hub and the nacelle, and having a first end fixed to the hub, and a second end in sliding contact with the second area. 17. The wind power system of claim 16, wherein the safety device includes a second arm having a third end fixed to the hub, and a fourth end in sliding contact with the first area and configured to connect the hub electrically to the first area. 18. The wind power system of claim 16, wherein the first arm is fixed adjustably to a third arm fixed to the hub to adjust a degree of elasticity of the first arm. 19. The wind power system of claim 16, wherein the safety device includes a comb connectable electrically to the nacelle to define a preferential path for electric charges caused by lightning; the comb being located between the hub and the nacelle, and being selectively adjustable. 20. The wind power system of claim 19, wherein the safety device includes a first slide; said first slide being pressed elastically on the second area, in sliding contact with the second area, and connectable electrically to the nacelle to define a preferential path for electric charges caused by air rubbing the blade. 21. The wind power system of claim 20, wherein the safety device includes a spacer, and at least one first adjusting screw; the first arm including a central body defining at least one first slot; the spacer being fixed adjustably to the central body by the first adjusting screw and the first slot, to adjust the position of the spacer with respect to the nacelle; the first slide being fixed to the spacer and interchangeable; and the position of the spacer being adjusted so the first slide contacts an annular surface of the nacelle. 22. The wind power system of claim 21, wherein the comb is connected adjustably to the central body to adjust a distance between the comb and the nacelle. 23. The wind power system of claim 21, wherein the comb is connected adjustably to the central body by the first adjusting screw and the first slot, to adjust a distance between the comb and the nacelle. 24. The wind power system of claim 22, wherein the distance between the comb and the nacelle is predetermined, to form a preferential path for electric charges produced by lightning striking the blade. 25. The wind power system of claim 17, wherein the safety device includes a second conducting strap located at the first area, the second conducting strap being in sliding contact with the second arm to connect the blade electrically to the second arm, and the second conducting strap extends along an arc about the third axis. 26. The wind power system of claim 25, wherein the second arm includes a first member, a second member, and at least one second adjusting screw; the first member and the second member each defining at least one second slot; and the second member being connected adjustably to the first member by the second adjusting screw and the second slot, to adjust the position of the second member with respect to the first member, and adjust the degree of elasticity of the second arm. 27. The wind power system of claim 26, wherein the second member includes a second slide and at least one screw; the second slide being fixed to the second member by the screw, and being interchangeable; and the position of the second member and the degree of elasticity of the second arm being adjustable, so the second slide is maintained contacting the second conducting strap. 28. The wind power system of claim 1, which further includes a plurality of blades, each blade being equipped with one of a plurality of safety devices.
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