BEMT에 의한 100kW 풍력터빈 블레이드 기본설계 및 출력 성능해석
Basic Configuration Design and Performance Analysis of a 100kW Wind Turbine Blade using Blade Element Momentum Theory
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초록
In this study, mathematical expressions based upon the conventional BEMT(blade element momentum theory) was applied to basic 100kW wind turbine blade configuration design. Power coefficient and related flow parameters, such as Prandtl's tip loss coefficient, tangential and axial flow induction factors of the wind turbine were analyzed systematically. X-FOIL was used to acquire lift and drag coefficients of the 2-D airfoils and Viterna-Corrigan formula was used to interpolate the aerodynamic characteristics in post-stall region. Also, aerodynamic characteristics, measured in a wind tunnel to calculate the power coefficient was applied. The comparative results such as axial and tangential flow factors, power coefficients were presented in this study. Power coefficient, calculated by in-house code was compared with the GH-Bladed result. The difference of the aerodynamic characteristics caused the difference of the performance characteristics as variation as TSR.
Abstract
In this study, mathematical expressions based upon the conventional BEMT(blade element momentum theory) was applied to basic 100kW wind turbine blade configuration design. Power coefficient and related flow parameters, such as Prandtl's tip loss coefficient, tangential and axial flow induction factors of the wind turbine were analyzed systematically. X-FOIL was used to acquire lift and drag coefficients of the 2-D airfoils and Viterna-Corrigan formula was used to interpolate the aerodynamic characteristics in post-stall region. Also, aerodynamic characteristics, measured in a wind tunnel to calculate the power coefficient was applied. The comparative results such as axial and tangential flow factors, power coefficients were presented in this study. Power coefficient, calculated by in-house code was compared with the GH-Bladed result. The difference of the aerodynamic characteristics caused the difference of the performance characteristics as variation as TSR.
참고문헌 (4)
- Betz A., "Schrauben propeller mit gerings term energie verlust" (1919), Gottinger Nachr
- Tony Burton, "Wind energy handbook", pp.73~74 (2001), John Willy & Sons
- Wind turbine post stall airfoil performance characte- ristics guidelines for blade element momentum methods, "T. Tanger", ~, pp.NREL (2003), CP-500-36900
- 김범석, "수평축 풍력발전용 터빈 블레이드 최적설계 및 공력성능해석에 관한 연구", 박사, pp.2005