Method for predicting a power curve for a wind turbine
AssigneeGeneral Electric Company
InventorsDong Wang, Yu Zhou
Life of this patent
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Abstract
A method for calculating a high-altitude power curve for a wind turbine is provided, the method including the steps of determining a cp-λ curve for a predetermined blade pitch angle of said wind turbine; calculating a first power curve without power limit based on the cp-λ curve; and calculating the high-altitude power curve with power limit from said first power curve, thereby using a site air density.
Claims20
A method for obtaining a power curve for a wind turbine, comprising the steps of:
- (a) determining a relation between the power coefficient cp and the tip-speed ratio λ for said wind turbine;
- (b) using the relation between power coefficient cp and the tip-speed ratio λ to determine a relation between the electrical power output P and wind speed v to obtain the power curve.
A method for calculating a high-altitude power curve for a wind turbine, comprising the steps of:
- determining a cp-λ curve for a predetermined blade pitch angle of said wind turbine;
- calculating a first power curve without power limit based on the cp-λ curve;
- and
- calculating the high-altitude power curve with power limit from said first power curve, thereby using a site air density.
A method of controlling the operation of a wind turbine, comprising the steps of:
- in an upper partial load range of said wind turbine, using a control strategy based on a corrected power curve which has been obtained by
- determining a cp-λ curve for a predetermined blade pitch angle of said wind turbine;
- calculating a first power curve without power limit based on the cp-λ curve;
- and
- calculating the corrected power curve with power limit from said first power curve, thereby using a site air density.
Dependencies are inferred from the claim text.