REVERSE FLOW LOAD MITIGATION DEVICE FOR A WIND TURBINE BLADE

摘要

A reverse wind load mitigation device (30) is provided for a wind turbine blade (20). The device (30) comprises a hinge member (32) attachable to a trailing edge (26) of a wind turbine blade (20). The separated flow inducer (34) is associated with the hinge member (32) and is configured to pivot about or with the hinge member (32) toward at least one of the surfaces (40, 42) in response to wind (45) traveling from a direction of the trailing edge (28). The separated flow inducer (34) is effective to induce flow separation (50) over at least one of the surfaces (40, 42).

主权项

1. A wind turbine blade comprising:
a blade body comprising a leading edge and a trailing edge with opposed pressure and suction surfaces extending there between defining an airfoil shape in cross-section and a chord line extending between the trailing edge and leading edge; a hinge member attachable to the trailing edge; and a rigid separated flow inducer associated with the hinge member, the rigid separated flow inducer configured to passively pivot about or with the hinge member toward at least one of the surfaces in response to wind traveling from a direction of the trailing edge; wherein the rigid separated flow inducer is effective to induce flow separation over at least one of the surfaces for a distance from the trailing edge.