Method for regulating air dynamic behaviour of blades of wind motor

Abstract

The invention discloses a method for regulating the air dynamic behaviour of blades of a wind motor, which comprises the steps of: a, supercharging an internal cavity in the blades by using compressed air; b, generating an expected control command based on the wanted air dynamic behaviour; 3, generating action input after receiving the expected control command, applying the action input to an air flow control device; e, forming a channel between the internal cavity and external air by using the air flow control device; f, spraying the compressed air in the internal cavity into air through the channel; g, measuring the influence effect of the air dynamic behaviour of the sprayed compressed air to the blades; and h, regulating the control command and the action input based on the measured effect. The method can effectively control the air dynamic behaviour of the blades of the wind motor.

Description

technical field [0001] The invention relates to the field of aerodynamics, in particular to a method for adjusting the aerodynamic characteristics of a wind engine blade. Background technique [0002] There are two types of traditional vertical axis wind turbines, one is a pitch-variable wind turbine and the other is a non-pitch wind turbine. Compared with a pitch-variable wind turbine, the non-pitch wind turbine captures wind energy more efficiently. Because its blades are fixed relative to the blade support frame, the aerodynamic characteristics cannot be adjusted by changing the pitch, so the angle of attack of the blades cannot be effectively adjusted to the best under different working conditions, and the pitch-variable wind turbine can make the wind force The relative wind speed of the blades of the engine is always maintained within the optimum angle of attack range, so that the wind energy can be utilized more efficiently. However, due to the addition of a pitch dev...

AI Technical Summary

Problems solved by technology

However, due to the addition of a pitch device between the blades and the blade support frame in the pitch-variable wind turbine, the blade and the support frame become a movable connection. This connection is usually hinged, and the working conditions of the wind turbine are very complicated. Sometimes in the face of very severe typhoons, this kind of hinge connection is difficult to bear the huge load brought by it, so the reliability of the pitch mechanism is greatly reduced, and it is easy to cause the blade to break off, which greatly shortens the life of the wind turbine. reduce