EP 3055556 A1 20160817 - HINGED VORTEX GENERATOR FOR EXCESS WIND LOAD REDUCTION ON WIND TURBINE
Title (en)
HINGED VORTEX GENERATOR FOR EXCESS WIND LOAD REDUCTION ON WIND TURBINE
Title (de)
SCHWENKBARER WIRBELERZEUGER ZUR REDUZIERUNG ÜBERSCHÜSSIGER WINDLASTEN IN WINDENERGIEANLAGEN
Title (fr)
GÉNÉRATEUR DE TOURBILLONS DU TYPE ARTICULÉ POUR UNE RÉDUCTION DE TOUT EXCÈS DE CHARGE DE VENT SUR UNE TURBINE ÉOLIENNE
Publication
Application
Priority
US 2013064060 W 20131009
Abstract (en)
[origin: WO2015053768A1] A vortex generator (VG) (42, 64, 80, 82, 84) mounted via a mounting plate (44, 92) to a wind turbine blade (22, 98). The VG airfoil (46) may be pivotally attached to the mounting plate by a spring hinge (48, 85) that causes the VG airfoil to passively deflect downstream in excess wind conditions to reduce lift on the blade above a predetermined wind speed. A blade pitch controller (99) sets a positive angle of attack on an outboard portion of the blade above the predetermined wind speed that compensates for lift reduction from deflection of VGs on an inboard portion of the blade. The spring hinge may provide a pivot axis (57) parallel to the suction side of the blade or normal (85) to it. A pivot limiter (58, 93/94) may hold the VG in an operating position against a spring preload, overcome by the predetermined wind speed.
IPC 8 full level
CPC (source: EP)
F03D 1/0675 (2013.01); F03D 7/0224 (2013.01); F05B 2240/3062 (2020.08); F05B 2240/31 (2013.01); F05B 2260/502 (2013.01); Y02E 10/72 (2013.01)
Citation (search report)
See references of WO 2015053768A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
US 2013064060 W 20131009; EP 13780029 A 20131009