WebIn subclass A, the standard deviation of wind speed measured at 15 m/s wind speed (which is defined as I 15 turbulence) is 18%. In subclass B, I 15 turbulence is equal to 16%. In order to select the proper wind turbine class for a specific site, all specifications of a wind turbine class (average speed, gust, and turbulence) must be fulfilled. http://web.mit.edu/wepa/WindPowerFundamentals.A.Kalmikov.2024.pdf
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