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RESEARCHApril 20, 2009Controller steadies offshore wind turbinesControl the angle of wind turbine blades individually and you can smooth power flow and reduce wear-and-tear on floating wind turbines.Floating wind turbines can be placed farther offshore where winds are generally stronger, but wave-induced motion of the turbines' platforms causes power fluctuations and increases wear on the turbines. A computer simulation showed that a controller that changes the angle, or pitch, of turbine blades separately rather than all at once would reduce power fluctuations by 44 percent compared to a regular controller. The controller would also reduce side-to-side forces on a turbine's tower by 39 percent. Research paper: Individual blade pitch control of floating offshore wind turbines Wind Energy, published online April 20, 2009 Researcher's contact: Karl Stol Related stories and briefs: Satellite shows where the wind blows -- related research Back to ERN April 20, 2009 |
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