On the basis of this model, the nonlinear dynamic inversion method was applied to design the pitch Angle controller of the system working above the rated wind speed.

在此基础上，利用非线性动态逆方法，设计了系统在额定风速以上工作时的桨距角控制律。

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Any wind turbines need power control. We aim at capturing wind energy in below-rated wind speed as much as possible and limiting the aerodynamic power in above-rated wind speed.

任何风力发电机都需要功率调节，其目的是在额定风速以下尽可能多的吸收风能，在额定风速以上限制其功率的输出。

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MW variable speed constant frequency wind turbine from shenyang university of technology is a variable pitch wind turbine, it can change pitch to adjust power above rated wind speed.

由沈阳工业大学研制的MW级变速恒频风电机组属于变桨距型机组，它在额定风速以上进行变桨距调功控制。

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Tornados are rated on several scales for strength based either on wind speed, pressure drop, or damaged caused, but the updated Enhanced Fujita Scale is the presently accepted scale in the United States.

FORBES: Tornados and Nukes -- How Big Can They Get?