| 摘要 |
The present invention relates to a blade pitch control device for a compact wind power generation apparatus that automatically controls a blade pitch by wind speed, revolutions of a blade, and input voltage of the generator, thereby continuously maintaining a required rotating force of the blade and thus achieving continuous generation. The blade pitch control device includes a pitch control converter detecting the revolutions of the blade which exceed reference revolutions; a pitch drive motor rotated forward or reverse according to a signal transmitted from the pitch control converter; a pulling bar connected to the pitch drive motor via a wire, its angle being varied by the forward or reverse rotation of the pitch drive motor; a horizontal moving unit with one end connected to the pulling bar and the other end connected to the inside of a piston in a horizontal direction, and moved back and forth according to the angle variation of the pulling bar; a pitch angle adjusting unit connected to the outside of the piston and completing the variation of the pitch angle of the blade while the angle is varied when the horizontal moving unit moves back or forth; an inverter converting the electric energy produced when the blade is rotated, into use current, in which the angle of the blade has been adjusted by the pitch angle adjusting unit; and a generator rotated in the same direction and at the same revolutions when the blade is rotated, thereby generating the electricity. |
