摘要:
Un rotor servant à capter l'énergie d'un milieu en écoulement ou transmettre de l'énergie à un milieu en écoulement comprend un moyeu et au moins une pale (10) de rotor. Afin de développer un tel rotor de telle sorte que son efficacité, aussi bien pour capter l'énergie d'un milieu en écoulement que pour transmettre de l'énergie à un milieu en écoulement, soit améliorée, la pale (10) du rotor comprend au moins une ondulation aérodynamique ou hydrodynamique qui forme avec la partie plate de la pale deux bords (14, 16). Le bord (14) situé dans le sens afflux radial est incliné à un angle alpha par rapport à la normale aux bords (22, 24) de la pale du rotor, de sorte qu'il est orienté vers l'extérieur par rapport au bord antérieur de la pale du rotor, dans le sens de rotation de celui-ci, alors que l'autre bord (16) est perpendiculaire aux bords (22, 24) de la pale du rotor.
摘要:
A wind turbine blade comprising a lightning protection system is provided. The lightning protection system comprises a lightning conductor located along a longitudinal portion of the wind turbine blade and is coupled to an electrical ground. A lightning receptor module is arranged on an external surface of the wind turbine blade and electrically coupled to the lightning conductor. An elongate receptor band is installed on the external surface of the wind turbine blade, over the lightning receptor module, and the receptor band is arranged to receive a stroke of lightning and transfer electrical current from the lightning stroke to the lightning conductor through the lightning receptor module.
摘要:
A self-supporting wind turbine tower with walls comprising an upper portion (12) and a lower portion (14). Substantially all of the upper portion (12) is formed from a composite plastic. Substantially all of the lower portion (14) is formed from mild steel.
摘要:
The invention relates to a rotor blade (20) for a wind turbine (10), wherein the rotor blade (20) comprises serrations (30) along at least a portion of the trailing edge section (23) of the rotor blade (20). The serrations (30) comprise a first tooth (31) and at least a second tooth (32), and the first tooth (31) is spaced apart from the second tooth (32). The area (35) between the first tooth (31) and the second tooth (32) is at least partially filled with porous material such that generation of noise in the trailing edge section (23) of the rotor blade (20) is reduced. Furthermore, the invention relates to a wind turbine (10) comprising at least one such a rotor blade (20).
摘要:
A self-supporting wind turbine tower with walls comprising an upper portion (12) and a lower portion (14). Substantially all of the upper portion (12) is formed from a composite plastic. Substantially all of the lower portion (14) is formed from mild steel.
摘要:
The invention relates to a wind turbine rotor blade comprising a root (131), a tip (132), a front edge (133) and a rear edge (134). Said rotor blade also has a pressure side (136) and a suction side (135) and at least one web (200) arranged at least partially between the suction and the pressure side (135, 136). Said rotor blade comprises a longitudinal direction extending between the root (131) and the tip (132). The web (200) is wave-shaped in the longitudinal direction of the rotor blade.
摘要:
A mixer-ejector wind turbine uses an ultracapacitor system to store power from the variable generation of power by a permanent magnet generator. The system takes advantage of the MEWT area ratio, the higher velocity at the outer radius of the turbine, and the ability of the ultracapacitor system to store almost all of the input charge.
摘要:
The invention relates to a wind-turbine rotor blade comprising a rotor-blade section (210) that has an inner rotor-blade section (210) with a first end (211) comprising a plurality of fastening elements (220) for fastening to a rotor hub of a wind-turbine and a second end (212) comprising a flange for fastening further sections of the wind-turbine rotor blade. The inner rotor-blade section (210) is made of polymer concrete and the rotor-blade section (210) has a plurality of resin-impregnated fibre-composite laid scrims or rovings (240) wound around the inner rotor-blade section (210).