Feasibilty study of aileron and spoiler control systems for large horizontal axis wind turbines
Studies have been conducted to determine the feasibility of using aileron or spoiler controls as alternates to pitch control for large horizontal axis wind turbines. The NASA Mod-0 100 kw machine was used as the basis for this study. Specific performance studies were conducted for 20% chord ailerons over the outboard 30% span, and for 10% chord spoilers over the same portion of the span. Both control systems utilized control deflections up to 60/sup 0/. Results of the study show that either ailerons or spoilers can provide the control necessary to limit turbine power in high wind conditions. The aileron system, as designed, provides overspeed protection at hurricane wind speeds, low wind speed starting torque of 778 N-m at 3.6 m/s, and a 1.3 to 1.5% increase in annual energy compared to a fixed pitch rotor.
- Research Organization:
- Wichita State Univ., KS (USA)
- DOE Contract Number:
- AI01-76ET20320
- OSTI ID:
- 5384391
- Report Number(s):
- DOE/NASA/3277-1; NASA-CR-159856
- Country of Publication:
- United States
- Language:
- English
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