Open AccessTeeter design for lowest extreme loads during end impacts
Author(s) -
Schorbach V.,
Dalhoff P.,
Gust P.
Publication year - 2018
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.2140
Subject(s) - turbine , wind power , marine engineering , engineering , offshore wind power , aeroelasticity , structural engineering , automotive engineering , reliability engineering , aerodynamics , mechanical engineering , aerospace engineering , electrical engineering
Abstract Two bladed wind turbines are discussed as a possible turbine alternative for offshore use as they show a potential to save cost of energy. But compared to three‐bladed turbines, their dynamic behavior is much more challenging. A possible solution to handle these larger dynamic loads is the use of a teeter hinge, which can significantly reduce fatigue loads. In contrast to that, extreme loads, coming from teeter end impacts, are often described as a problem for teetered turbines. There are different design parameters of the teeter system of a turbine, which have an influence on extreme loads during teeter end impacts. Despite numerous studies on teeter movement and load reduction potentials of operational loads, scientific literature does not give information about suitable load‐reducing combinations of teeter design parameters and their influence on extreme loads. This paper, which is a summary of a PhD thesis,[1][Schorbach V, 2016] analyses which combination of teeter parameters has the largest load‐reducing influence on extreme loads. Aeroelastic load simulations of the teetered turbine CART2 from the NREL test site and one of today's commercial two‐bladed turbines, the SCD3MW from aerodyn (both pitch controlled upwind turbines), will be used.