A tethered passive wing system for the conversion of flow energy into electric energy which exhibits optimized aerodynamic and mechanical properties for reliable and efficient operation and is only connected through one or more tensile elements to a converter unit and comprises an optimized combinat
A tethered passive wing system for the conversion of flow energy into electric energy which exhibits optimized aerodynamic and mechanical properties for reliable and efficient operation and is only connected through one or more tensile elements to a converter unit and comprises an optimized combination of rigid, non-flexural structural elements such as, for example, beams and shell structures and flexible fabric structures, such as, for example, membranes, films, laminates.
대표청구항▼
1. An airborne wind turbine comprising (a) a stationary or a mobile ground station; and(b) at least one passive, wind-driven wing having tether-guided, tensile, extending and controlling devices (5, 6, 12) and controllers (9) that are connected with and controlled from said stationary or mobile grou
1. An airborne wind turbine comprising (a) a stationary or a mobile ground station; and(b) at least one passive, wind-driven wing having tether-guided, tensile, extending and controlling devices (5, 6, 12) and controllers (9) that are connected with and controlled from said stationary or mobile ground station, wherein the airborne wind turbine is configured to convert flow energy, generated by wind, into electrical energy, and said at least one wind-driven wing comprises: (i) a hard but elastic supporting crossbeam profile spar (2) which extends in a span-wise direction of the at least one wind-driven wing across a leading edge of the at least one wind-driven wing, the profile spar forming a base on which, via joints or connecting elements (11), hard non-flexible profile elements (8) are attached, which define a shape of the at least one wind-driven wing and form separate profile segments;(ii) an upper sail portion (25) formed from a first flexible membrane, laminate or film material;(iii) a lower sail portion (26) formed from a second flexible membrane, laminate or film material, wherein said upper and lower sail (25, 26) portions join said profile elements (8) together under tension;(iv) at least one central bridle line (4) located in a middle of the at least one wind-driven wing, so that free rotation of the at least one wind-driven wing in the form of lateral and yaw and roll movements is possible;(v) a multi-part wing bridle (12) comprising one or more main tethers (5) and outer bridle tethers (6), and deflecting elements (7) or guide pulleys (14) which ensure a rolling degree of freedom, wherein said wing bridle is arranged on or adjacent to the profile spar (2),whereby the at least one wind-driven wing is operated via the stationary or mobile ground station in a yoyo operation mode by raising and lowering of the at least one wind-driven wing in two completely separated operating points which include an energy generating working phase and a recovery phase. 2. The wind turbine according to claim 1, further comprising a guidance device (15, 16, 17) attached to the profile spar (2) for positioning the tethers (5, 6), the central bridle line (4) and/or one or more rigid articulated connection elements (18, 19) relative to the longitudinal axis of the at least one wind-driven wing. 3. The wind turbine according to claim 1, wherein the upper and the lower sail portions (25, 26) are connected, in the span-wise direction of the at least one wind-driven wing, via a flexible, fluid-elastic curved leading edge (1a) made of a film or a membrane. 4. The wind turbine according to claim 1, wherein the profile spar, the profile elements, and the upper and lower sail portions are fiber-reinforced or have a structural reinforcing matrix. 5. The wind turbine according to claim 1, further comprising at least one rigid or movable slat element (20, 21) located proximal to a leading edge of the profile segment. 6. The wind turbine according to claim 5, wherein the at least one movable slat element (20, 21) is controlled by a change in angle from the ground station relative to a leading edge of the profile spar (2). 7. The wind turbine according to claim 1, wherein control of the at least one wind-driven wing in the area of a rear edge of the at least one wind-driven wing is by elastic elements and without the use of butterfly valves or other similar devices. 8. The wind turbine according to claim 1, wherein the at least one wind-driven wing has a surface load of between 50 and 150 kg/m2, a surface weight of 2-5 kg/m2, and operates at a power output of up to 20 kW/m2. 9. The wind turbine according to claim 1, wherein the at least one wind-driven wing comprises two or more separate profile segments which can be individually transported and, at an operation site, be coupled to one another in an area of load transmission levels or bridle points. 10. An airborne wind turbine comprising: (a) a stationary or a mobile ground station; and(b) at least one passive, wind-driven wing having tether-guided tensile, and extending devices (5, 6, 12) and at least one controller (9) that are connected with and controlled from said stationary or mobile ground station, wherein the airborne wind turbine is configured to convert flow energy, generated by wind, into electrical energy, the at least one wind-driven wing comprises: (i) a hard but elastic supporting crossbeam profile spar (2) which extends in a span-wise direction of the at least one wind-driven wing, the profile spar forming a base on which, via joints or connecting elements (11), hard non-flexible profile elements (8) are attached, which define a shape of the at least one wind-driven wing and form separate profile segments;(ii) an upper sail portion (25) formed from a first flexible membrane, laminate or film material;(iii) a lower sail portion (26) formed from a second flexible membrane, laminate or film material, wherein said upper and lower sail (25, 26) portions join said profile elements (8) together under tension;(iv) at least one central bridle line (4) located in a middle of the at least one wind-driven wing, so that free rotation of the at least one wind-driven wing in the form of lateral and yaw and roll movements is possible;(v) a multi-part wing bridle (12) comprising one or more main tethers (5) and outer bridle tethers (6), and deflecting elements (7) or guide pulley (14) which ensure a rolling degree of freedom, wherein said wing bridle is arranged on or adjacent to the profile soar (2);wherein each or every second or third profile segment further comprises a ram pressure opening (24) located proximal to a front leading edge of the profile segment.
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이 특허에 인용된 특허 (21)
Goldstein, Leonid, Airborne wind energy conversion system with fast motion transfer.
Finn ; deceased Alfred C. (17621 Irvine Blvd. ; Suite 101 LATE OF Tustin CA) Finn ; surviving spouse by Lucretta M. (17621 Irvine Blvd. ; Suite 101 Tustin CA 92680), Toy-kite airplane.
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