Enhancing stiffness of wind turbine blades
First Claim
Patent Images
1. A wind turbine blade comprising:
- a load bearing member;
a blade shell, the blade having a leading edge and a trailing edge;
a tension element spaced apart from the load bearing member, the tension element being anchored at its ends to the load bearing member; and
at least one support strut attached to the load bearing member and extending away from the load bearing member, the support strut supporting the tension element at a position spaced away from the load bearing member.
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Abstract
Edgewise stiffness of a wind turbine blade is enhanced by arranging a tension element between anchor points at the ends of a load bearing member in the turbine blade such as a spar or a beam. The tension element is spaced away from the load bearing member on the trailing edge side of the load bearing member by struts and acts as a suspension cable. Several tension elements may be used and a similar tension element may be arranged on the leading edge side of the load bearing member.
11 Citations
17 Claims
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1. A wind turbine blade comprising:
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a load bearing member; a blade shell, the blade having a leading edge and a trailing edge; a tension element spaced apart from the load bearing member, the tension element being anchored at its ends to the load bearing member; and at least one support strut attached to the load bearing member and extending away from the load bearing member, the support strut supporting the tension element at a position spaced away from the load bearing member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A wind turbine comprising a rotor having a plurality of blades, wherein each of the blades comprises:
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a load bearing member; a blade shell, the blade having a leading edge and a trailing edge; a tension element spaced apart from the load bearing member, the tension element being anchored at its ends to the load bearing member; and at least one support strut attached to the load bearing member and extending away from the load bearing member, the support strut supporting the tension element at a position spaced away from the load bearing member.
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Specification