Wind turbine blade
AssigneeEnvision Energy (Denmark) ApS
InventorPeter Grabau
Life of this patent
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Abstract
A partial pitch wind turbine blade in which the pitch system of the blade functions as a lightning receptor. As the pitch system is of a relatively large dimension, it is able to dissipate the effects of a lightning strike without damage, and removes the needs for additional blade features normally used to conduct lightning around or away from the pitch system.
Claims18
A partial pitch wind turbine blade comprising an inner blade extender section, an outer blade section and a pitch system, said outer blade section coupled to said inner blade extender section by said pitch system such that said outer blade section is operable to pitch relative to said inner blade extender section, wherein said pitch system comprises at least one conductive element, and wherein said partial pitch blade comprises a lightning down conductor coupled to said pitch system, and wherein said at least one conductive element of said pitch system is provided directly exposed to a lightning strike at the external surface of said pitch system thus acting as a lightning receptor for said partial pitch wind turbine blade.
A partial pitch wind turbine comprising at least two partial pitch wind turbine blades, each of said blades comprising an inner blade extender section, an outer blade section and a pitch system, said outer blade section coupled to said inner blade extender section by said pitch system such that said outer blade section is operable to pitch relative to said inner blade extender section, wherein said pitch system comprises at least one conductive element, and wherein said partial pitch blade comprises a lightning down conductor coupled to said pitch system, and wherein said at least one conductive element of said pitch system is provided directly exposed to a lightning strike at the external surface of said pitch system thus acting as a lightning receptor for said partial pitch wind turbine blade.
Dependencies are inferred from the claim text.