寒冷地におけるブレード着氷が風車特性に及ぼす影響（単純化した着氷模型による実験と解析）

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  • Effect of Icing Airfoil on Characteristic of Horizontal Axis Wind Turbine in Cold Climates (Test and Analysis Results with Simplified Iced Model)
  • カンレイチ ニ オケル ブレードチャクヒョウ ガ フウシャ トクセイ ニ オヨボス エイキョウ(タンジュンカ シタ チャクヒョウ モケイ ニ ヨル ジッケン ト カイセキ)

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Wind turbines in cold climate are defined as wind turbine operating in an environment where the temperature is 0℃ or lower, and/or operating with icing on wind turbine. Wind turbines in cold climate have been installed around 30% of worldwide installation of wind turbines. It is important for the wind turbines in cold climate to clarify the influence on the performance due to icing airfoil. When the temperature is -20℃ to 0℃, icing phenomenon occurs remarkably on the wind turbine blade, which causes the failure of the wind turbine by the fluctuation of the aerodynamic force on the blade. In this paper, the aerodynamic characteristics is clarified by the airfoil performance test of icing airfoil model in wind tunnel. With the use of these results, numerical analysis was carried out to clarify the influence of icing airfoil on the averaged output power and load on wind turbine. As result of the analysis, the output power is decreased by icing airfoil, the averaged moment of blade root is increased at high wind speed and the edgewise moment amplitude of blade root is increased.

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