Open AccessFull‐scale test of trailing edge flaps on a Vestas V27 wind turbine: active load reduction and system identification
Author(s) -
Castaignet Damien,
Barlas Thanasis,
Buhl Thomas,
Poulsen Niels K.,
WedelHeinen Jens Jakob,
Olesen Niels A.,
Bak Christian,
Kim Taeseong
Publication year - 2014
Publication title -
wind energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.743
H-Index - 92
eISSN - 1099-1824
pISSN - 1095-4244
DOI - 10.1002/we.1589
Subject(s) - trailing edge , reduction (mathematics) , turbine , moment (physics) , control theory (sociology) , enhanced data rates for gsm evolution , engineering , turbine blade , model predictive control , full scale , structural engineering , simulation , physics , computer science , mathematics , aerospace engineering , control (management) , artificial intelligence , geometry , telecommunications , classical mechanics
A full‐scale test was performed on a Vestas V27 wind turbine equipped with one active 70 cm long trailing edge flap on one of its 13 m long blades. Active load reduction could be observed in spite of the limited spanwise coverage of the single active trailing edge flap. A frequency‐weighted model predictive control was tested successfully on this demonstrator turbine. An average flapwise blade root load reduction of 14% was achieved during a 38 minute test, and a reduction of 20% of the amplitude of the 1P loads was measured. A system identification test was also performed, and an identified linear model, from trailing edge flap angle to flapwise blade root moment, was derived and compared with the linear analytical model used in the model predictive control design model. Flex5 simulations run with the same model predictive control showed a good correlation between the simulations and the measurements in terms of flapwise blade root moment spectral densities, in spite of significant differences between the identified linear model and the model predictive control design model. Copyright © 2013 John Wiley & Sons, Ltd.