Inflow parameter effects on wind turbine tower cyclic loading
Wind turbine towers are fatigue-critical structures subjected to a variety of atmospheric wind regimes at onshore installations. At a commercial wind farm in Southwestern Ontario, the structural steel supporting tower of a multi-megawatt horizontal-axis turbine has been instrumented with a fiber Bragg grating strain gauge array. A nearby meteorological mast allows wind conditions to be classified on the basis of horizontal turbulence intensity and vertical wind shear. Data has been collected over a measurement campaign spanning multiple months, and a sample of the towerstate SAs cyclic loading history has been compiled. Comparisons are drawn between accumulated hourly loading cycle spectra for operation across different upwind inflow parameters.
Smith, Jamie C.; Carriveau, Rupp; and Ting, David S.K.. (2014). Inflow parameter effects on wind turbine tower cyclic loading. Wind Engineering, 38 (5), 477-488.