IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0229334
(2008-08-21)
|
등록번호 |
US-8137074
(2012-03-20)
|
발명자
/ 주소 |
- Mendez Hernandez, Yaru Najem
- Lewke, Bastina
- Menzel, Matthias
- Feichter, Wilhelm
- Kraemer, Sebastian Gerhard Maxim
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
7 인용 특허 :
2 |
초록
▼
A glass-reinforced fiber or carbon-reinforced wind turbine blade having a suction side and a pressure side includes a tip portion adapted with an electric field control region disposed solely on or within the tip portion. The electric field control region is in electrical communication with or galva
A glass-reinforced fiber or carbon-reinforced wind turbine blade having a suction side and a pressure side includes a tip portion adapted with an electric field control region disposed solely on or within the tip portion. The electric field control region is in electrical communication with or galvanically connected to an electric discharge conduction mechanism, wherein the electric field control region and the electric discharge conduction mechanism together operate to protect a wind turbine and its associated blade(s) from damage due to a lightning strike at the tip of the wind turbine blade(s) by controlling an electric field at the tip portion(s) caused by the lightning strike.
대표청구항
▼
1. A wind turbine lightning protection system (LPS) comprising a glass-reinforced fiber or carbon-reinforced wind turbine blade comprising a suction side, a pressure side, a root, a tip, and a tip portion separated a predetermined distance from the root, wherein the suction side and pressure side of
1. A wind turbine lightning protection system (LPS) comprising a glass-reinforced fiber or carbon-reinforced wind turbine blade comprising a suction side, a pressure side, a root, a tip, and a tip portion separated a predetermined distance from the root, wherein the suction side and pressure side of the wind turbine blade are each configured with a conductive or semi-conductive material only between the predetermined distance from the root and the tip of the wind turbine blade to provide an electric field control region disposed on or within the tip portion and completely encapsulating the suction side and pressure side of the wind turbine blade only between the predetermined distance from the root and the tip of the wind turbine blade to increase the emission of lightning streamers and leaders in the electric field control region and force a lightning discharge to attach to the tip portion, the electric field control region in electrical communication with a wind turbine blade down conductor disposed within the wind turbine blade, wherein the electric field control region and the down conductor together operate to protect the wind turbine blade from damage due to a lightning strike at the tip of the wind turbine blade by controlling an electric field at the tip portion caused by the lightning strike. 2. The wind turbine LPS according to claim 1, wherein the electric field control region is configured to reinforce conductive paths for lightning current caused by the lightning strike. 3. The wind turbine LPS according to claim 1, wherein the electric field control region is configured to provide extended wind turbine blade surface protection against lightning current caused by the lightning strike. 4. The wind turbine LPS according to claim 1, wherein the electric field control region is configured to protect internal portions of the wind turbine blade without the need for a lightning protection system internal to the wind turbine blade. 5. The wind turbine LPS according to claim 1, wherein the electric field control region is configured to control the electric field strength distribution over the surface of the wind turbine blade during the lightning strike. 6. The wind turbine LPS according to claim 1, wherein the conductive or semi-conductive material is selected from sheet metal, metal mesh, flexible foil, ceramic, polymeric, and conductively doped coatings. 7. A wind turbine lightning protection system (LPS) comprising a glass-reinforced fiber or carbon-reinforced wind turbine blade, the wind turbine blade comprising a suction side, a pressure side, a root, a tip, and a tip portion separated a predetermined distance from the root, wherein the suction side and pressure side of the wind turbine blade are each configured with a conductive or semi-conductive material only between the predetermined distance from the root and tip of the wind turbine blade defining an electric field control region disposed on or within the tip portion and completely encapsulating the suction side and pressure side of the wind turbine blade only between the predetermined distance from the root and the tip of the wind turbine blade, the wind turbine blade suction side and pressure side each further configured with reinforced regions having similar characteristics as the electric field control region, wherein the electric field control region and the reinforced regions are together configured to conduct and guide a lightning discharge on a predefined path to control an electric field caused by a lightning strike at the tip. 8. The wind turbine LPS according to claim 7, wherein the reinforced regions comprise conductive or semi-conductive material covering or embedded into the surface of the suction side and the pressure side of the wind turbine blade. 9. The wind turbine LPS according to claim 7, wherein the electric field control region is configured to reinforce conductive paths for lightning current caused by the lightning strike. 10. The wind turbine LPS according to claim 7, wherein the electric field control region is configured to provide extended wind turbine blade surface protection against lightning current caused by the lightning strike. 11. The wind turbine LPS according to claim 7, wherein the electric field control region is configured to protect internal portions of the wind turbine blade without the need for a lightning protection system internal to the wind turbine blade. 12. The wind turbine LPS according to claim 7, wherein the electric field control region is configured to control the electric field strength distribution over the surface of the wind turbine blade during the lightning strike. 13. The wind turbine LPS according to claim 7, wherein the conductive or semi-conductive material comprises an antimony doped compound. 14. The wind turbine LPS according to claim 7, wherein the conductive or semi-conductive material is selected from sheet metal, metal mesh, flexible foil, ceramic, polymeric, and conductively doped coatings. 15. A wind turbine lightning protection system (LPS) comprising: a fiber or carbon-reinforced wind turbine blade comprising a suction side, a pressure side, a root, a tip, and a tip portion separated a predetermined distance from the root;a conductive or semi-conductive material disposed on or within the surface of a tip portion of the wind turbine blade and completely encapsulating the suction side and pressure side of the wind turbine blade only between the predetermined distance from the root and the tip of the wind turbine blade, defining an electric field control region; anda conductive or semi-conductive material disposed on or within remaining portions of the wind turbine blade to completely encapsulate the remaining portions of the wind turbine blade, defining a reinforced region having similar characteristics as the electric field control region, the electric field control region and the reinforced region together defining a Faraday cage region configured to provide electric field control of lightning discharges at the tip of the wind turbine blade. 16. The wind turbine LPS according to claim 15, further comprising a coating of conductive, semi-conductive or non-conductive material covering the reinforced region and remaining portions of the wind turbine blade. 17. The wind turbine LPS according to claim 15, wherein the electric field control region is configured to reinforce conductive paths for lightning current caused by the lightning strike. 18. The wind turbine LPS according to claim 15, wherein the electric field control region is configured to provide extended wind turbine blade surface protection against lightning current caused by the lightning strike. 19. The wind turbine LPS according to claim 15, wherein the electric field control region is configured to protect internal portions of the wind turbine blade without the need for a lightning protection system internal to the wind turbine blade. 20. The wind turbine LPS according to claim 15, wherein the electric field control region is configured to control the electric field strength distribution over the surface of the wind turbine blade during the lightning strike. 21. The wind turbine LPS according to claim 15, wherein the conductive or semi-conductive material comprises an antimony doped compound. 22. The wind turbine LPS according to claim 15, wherein the conductive or semi-conductive material is selected from sheet metal, metal mesh, flexible foil, ceramic, polymeric, and conductively doped coatings.
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