EXAMPLE
WEIBULL FIT
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Example for
Weibull fitting

 

Wind speed frequency distributions can be fitted to the Weibull distribution. The fitting of the wind data can be calculated for the 2-parameter Weibull distribution (scale parameter A, shape parameter k) and for the 3-parameter Weibull distribution (scale parameter A, shape parameter k, location parameter v0).

Besides the methods of the linear regression and the Maximum Likelihood model, the Weibull distribution can also be determined via the best possible fit to the mean value.

In the following example, the wind speeds measured at several height levels have been reduced to complete profiles up to 150 m height with the WindDataSuite module for data filtering. Then, the frequency distributions of the the wind speeds have been fitted to the 2-parameter Weibull distribution with the Maximum-Likelihood model.

 

Fig.1:
Frequencies of the wind speeds
Fig.2:
Frequencies of the wind speeds of the fitted Weibull distributions
Fig.3:
Measured and Weibull fitted wind speeds
Fig.4:
Shape parameter k of the Weibull distributions
© WIND DATA SUiTE - Dr. Helmut Frey      Last modified: 2018-09-19