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Load Comparisons between a Partial Pitch Two-Bladed Turbine and a Three-Bladed Turbine

taesongThis article shows the potential for reducing extreme loads with an innovative design of wind turbine, a partial pitch two-bladed concept turbine. The most extreme conditions to test a turbine are considered to be stand-still combined with a grid failure in which the wind comes from all directions from 0 to 360 degrees. All aeroelastic load simulations are done by using the aeroelastic code HAWC2. From the load comparisons between the partial pitch two-bladed turbine and a conventional three-bladed turbine it is observed that the partial pitch two-bladed turbine can reduce the extreme tower bottom bending moment by approximately 33% compared to the three-bladed turbine.

By Taeseong Kim, Wind Energy Department, Technical University of Denmark Risø Campus, Denmark

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