Blade angle control apparatus of wind power generator and wind power generator having same
OwnerJinhwan KIMinventor
Life of this patent
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Abstract
An apparatus for controlling a blade angle of a wind power generator according to wind velocity, and a wind power generator having the same, the apparatus comprising: a shaft; a housing provided to enable the rotation of the shaft; and a spring having ends fixed respectively to the shaft and the housing to store elastic energy through the relative rotation of the shaft and the housing, and enables the relative rotation in the reverse direction so as to restore the shift and the housing to the original states when the power necessary for the relative rotation is released, wherein one of the shat and the housing is fixed at a blade provision unit provided to rotate the blade by using wind pressure and the other is fixed at the blade.
Claims6
A blade angle control apparatus of a wind power generator which is able to control the angle of a blade of the wind power generator based on wind velocity, comprising:
- a shaft;
- a housing wherein the shaft is installed rotatable;
- and
- a spiral spring the ends of which are fixed at the shaft and the housing, thus storing an elastic energy based on relative rotation between the shaft and the housing, and if the force necessary for the relative rotation is removed, the spiral spring allows the shaft and the housing to relatively rotate in the opposite directions to return to their initial states, and
- any of the shaft and the housing is fixed at a blade installation part installed in such a way that the blade can rotate by wind pressure, and the other one is fixed at the blade, whereupon the area of the blade which receives wind pressure can be adjusted based on the level of wind velocity with the aid of the elastic force of the spiral spring.
Dependencies are inferred from the claim text.