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The present disclosure provides a variable pitch control method and system for an asymmetric-airfoil vertical axis wind turbine, which collects data by means of an anemograph, an anemoscope and an angle sensor, outputs an optimal pitch angle on the basis of a pitch angle control law, and controls a pitch angle of the wind turbine to the optimal pitch angle by means of a variable pitch execution mechanism. The present disclosure has the advantages that a wind speed in v and a blade azimuth angle are input to the control law used, besides the two variables, the control law is related to constants of a blade rotation radius R, a rotation speed Ω, an aerodynamic coefficient, etc., and the Reynolds number has small influence on the aerodynamic coefficient, so the control law is suitable for various wind conditions
ZA2021/05542A2021-08-062021-08-06Variable pitch control method and system for asymmetric-airfoil verticalaxis wind turbine
ZA202105542B
(en)