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US 2017/0248115 A1Published application
Optimized Multiple Airfoil Wind Turbine Blade Assembly
OwnerHoward Harrisoninventor
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Abstract
A method for optimizing multiple airfoil wind turbine blades, having, specifically, at least a primary airfoil and a secondary airfoil with an aerodynamic gap therebetween. an optimized multiple airfoil wind turbine blade assembly, and a modular method for manufacturing and assembling the same.
Claims25
A method for optimizing a multiple airfoil blade assembly for a wind turbine, said method comprising;
- a. A set of criteria for selecting potentially optimum airfoil configurations,
- b. A Blade Element Momentum theory model,
- c. A first methodology for increasing the predicted performance of said wind turbine due to the enhanced rotational stall delay of said multiple airfoil blade assembly, and
- d. A second methodology for increasing the predicted performance of said wind turbine due to the reduced tip losses of said multiple airfoil blade assembly,
- wherein said method may be repeated for a number of said potentially optimum airfoil configurations, to determine the optimum airfoil configuration.
2 more elements
A multiple airfoil blade assembly for a wind turbine, having, when assembled on said wind turbine, a root portion proximal to the hub of said wind turbine and a tip portion distal to said hub, said wind turbine blade assembly comprising;
- a. A primary airfoil having a primary leading edge and primary trailing edge, and
- b. A secondary airfoil having a secondary leading edge and a secondary trailing edge:
- wherein said primary airfoil is configured upwind of said secondary airfoil and there is an aerodynamic gap between said primary leading edge and said secondary leading edge.
Dependencies are inferred from the claim text.