Abstract: A blade includes inwardly a continuous cable arrangement intended to measure conductivity for blade lightning protection, wherein the cable arrangement includes an upper portion and a lower portion extending therebetween the blade root and the blade tip, the lower portion electrically in contact with the upper portion closing an electrical loop, and wherein the blade further includes an electrical connector element located at the blade root and electrically in contact with the upper portion and the lower portion, the electrical connector element protruding exteriorly on the blade root so that conductivity of the blade is measured.

Abstract: The invention describes a mold for non-metallic wind turbine blade shells that comprises two semi-molds, upper and lower, hinged with a pivoting system and equipped with stiffening ribs that hold a system of air conduits on it, and which is partitioned transversely in at least two parts (1A, 2A) and (1B, 2B) that are joined together with some fastening ribs (13A, 13A?, 13B, 13B?). The invention likewise describes the manufacturing method for this mold and the method to obtain a wind turbine blade by replacing an already constituted part of the mold to obtain a geometry differentiated from the original in one of its parts, and to manufacture another family of wind turbine blades.

Abstract: Wind turbine comprising one or more blades, incorporating in each blade a damping device comprising a first damping element tuned at the main resonance frequency of the blade ? o and K additional damping elements tuned at frequencies ? 1, ? 2, . . . ? k so that in the event of blade vibrations its amplitude A is reduced in a percentage Y of the amplitude Ao at the main resonance frequency of the blade ? o in a band extended above and below the main resonance frequency of the blade ? o in a percentage X of ? o, said frequencies ? 1, ? 2, . . . ? k being comprised within said band.

Abstract: The invention describes a mold for non-metallic wind turbine blade shells that comprises two semi-molds, upper and lower, hinged with a pivoting system and equipped with stiffening ribs that hold a system of air conduits on it, and which is partitioned transversely in at least two parts (1A, 2A) and (1B, 2B) that are joined together with some fastening ribs (13A, 13A?, 13B, 13B?). The invention likewise describes the manufacturing method for this mold and the method to obtain a wind turbine blade by replacing an already constituted part of the mold to obtain a geometry differentiated from the original in one of its parts, and to manufacture another family of wind turbine blades.