An investigation was undertaken to identify the aerodynamic performance of five separate trailing-edge control devices and to evaluate their potential for wind turbine overspeed control applications. A modular two-dimensional wind tunnel model was constructed and aerodynamic performance data were acquired. To further interpret their potential, the controls were evaluated using a performance analysis computer program and a generic wind turbine geometry. On the basis of the investigation results, the Spoiler-Flap control configuration was deemed best suited for turbine braking applications. This particular control exhibited a good suction coefficient behavior over a broad angle-of-attack range and good turbine braking capabilities, especially at low tip-speed ratios.
An Evaluation of Several Wind Turbine Trailing-Edge Aerodynamic Brakes
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Miller, S., Migliore, P. G., and Quandt, G. A. (November 1, 1996). "An Evaluation of Several Wind Turbine Trailing-Edge Aerodynamic Brakes." ASME. J. Sol. Energy Eng. November 1996; 118(4): 198–203. https://doi.org/10.1115/1.2871776
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