IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0491520
(2009-06-25)
|
등록번호 |
US-8342805
(2013-01-01)
|
발명자
/ 주소 |
- Mendez Hernandez, Yaru Najem
- Roesner, Robert
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
10 인용 특허 :
4 |
초록
▼
A lightning protection system for a wind turbine blade or aircraft wing includes a glass-reinforced fiber or carbon-reinforced wind turbine blade or aircraft wing having a tip region, a suction side, a pressure side, a leading edge and a trailing edge. A substantially planar sheet of conductive or s
A lightning protection system for a wind turbine blade or aircraft wing includes a glass-reinforced fiber or carbon-reinforced wind turbine blade or aircraft wing having a tip region, a suction side, a pressure side, a leading edge and a trailing edge. A substantially planar sheet of conductive or semi-conductive material is disposed internal to the blade tip region or wing tip region and between the suction side and pressure side. The sheet operates during a lightning discharge to form an electric field control mechanism causing the lightning discharge to attach to the tip region. The sheet is in electrical communication or galvanic connection with a conductive or semi-conductive path such that the electric field control mechanism and the path together operate to protect the wind turbine blade or aircraft wing from damage caused by the lightning strike in the tip region of the wind turbine blade or aircraft wing by controlling an electric field in the tip region caused by the lightning strike.
대표청구항
▼
1. An airfoil lightning protection system (LPS) comprising: a glass-reinforced fiber or carbon-reinforced wind turbine blade or aircraft wing comprising a tip region, a suction side, a pressure side, a leading edge, and a trailing edge;a substantially planar sheet, mesh or foil of electrically condu
1. An airfoil lightning protection system (LPS) comprising: a glass-reinforced fiber or carbon-reinforced wind turbine blade or aircraft wing comprising a tip region, a suction side, a pressure side, a leading edge, and a trailing edge;a substantially planar sheet, mesh or foil of electrically conductive or semi-conductive material disposed internal to the tip region or extended to the rotor blade root, and between the suction side and pressure side such that the sheet forms an electric field control mechanism causing a lightning discharge to attach to the tip region; andan electrically conductive or semi-conductive path, formed at least in part by the substantially planar sheet being extended inwardly along at least one of the leading edge and the trailing edge of the turbine blade or aircraft wing substantially reaching the blade root, in electrical communication or galvanic connection with the sheet such that the electric field control mechanism and the path together operate to protect the wind turbine blade or aircraft wing from damage due to a lightning strike in the tip region of the wind turbine blade or aircraft wing by controlling an electric field in the tip region caused by the lightning strike. 2. The LPS according to claim 1, wherein the substantially planar sheet is selected from sheet metal, metal mesh, flexible foil, ceramic, polymeric, and conductively doped materials. 3. The LPS according to claim 1, wherein the path comprises a conductive or semi-conductive material covering or embedded into the surface of the suction side and the pressure side of the wind turbine blade or aircraft wing. 4. The LPS according to claim 3, wherein the path is disposed in close proximity to, but displaced from, the leading and trailing edges of the turbine blade or aircraft wing. 5. The LPS according to claim 1, wherein the substantially planar sheet is disposed within a region about 10 feet of the tip of the turbine blade or aircraft wing or in close proximity to the rotor blade spar caps. 6. The LPS according to claim 1, wherein the substantially planar sheet has substantially the same aerodynamic form of the outermost tip portion of the turbine blade or aircraft wing tip region to provide a substantially flush structure. 7. The LPS according to claim 1, wherein the substantially planar sheet is extended beyond the trailing edge of the tip region of the turbine blade or aircraft wing to provide a substantially offset structure. 8. The LPS according to claim 1, wherein the outer periphery of the substantially planar sheet is substantially flush with at least a portion of the turbine blade or aircraft wing tip region. 9. The LPS according to claim 1, wherein the path comprises a turbine blade down conductor. 10. The LPS according to claim 1, wherein the electrically conductive or semi-conductive path is disposed in close proximity to, but displaced from, the leading and trailing edges of the turbine blade or aircraft wing. 11. The LPS according to claim 1, further comprising a conductive or semi-conductive material covering or embedded into the tip region of the wind turbine blade or aircraft wing and completely encapsulating the tip region to define a Faraday cage region. 12. The LPS according to claim 11, further comprising a coating of conductive, semi-conductive or non-conductive material covering or embedded into the remaining portions of the wind turbine blade or aircraft wing. 13. The LPS according to claim 11, wherein the conductive or semi-conductive material covering or embedded into the tip region extends to the root of the blade or wing. 14. The LPS according to claim 1, wherein the electric field control mechanism is configured to reinforce transverse conductive paths for lightning current caused by the lightning strike. 15. The LPS according to claim 1, wherein the substantially planar sheet operates to discharge electrical charges internal to the wind turbine blade or aircraft wing caused by the lightning strike. 16. The LPS according to claim 1, wherein the substantially planar sheet is attached to the wind turbine blade or aircraft wing only at the outer periphery of the sheet. 17. The LPS according to claim 1, wherein the outer periphery of the sheet is attached to the leading edge of the wind turbine blade or aircraft wing, and further wherein the outer periphery of the sheet extends beyond the trailing edge of the wind turbine blade or aircraft wing. 18. The LPS according to claim 1, wherein the substantially planar sheet is flexible to substantially all mechanical blade or wing dynamics. 19. The LPS according to claim 1, further comprising at least one transversal stress-relief conductive or semi-conductive path, mesh or foil disposed between the suction side and pressure side, and configured to reduce electro-dynamic forces observed in parallel conductors when lightning current flows across the LPS. 20. The LPS according to claim 1, wherein the electric field control mechanism operates to control the electric field strength distribution over the surface of the wind turbine blade or aircraft wing. 21. The LPS according to claim 1, wherein the electric field control mechanism and the electrically conductive or semi-conductive path operate together to decrease lightning current density and reduce the electromagnetic field distribution around the blade or wing before, during and after the lightning strike, such that elevated electromagnetic and thermal loads on the blade, aircraft foil or wing are reduced.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.