WIND POWER GENERATION DEVICE AND CONTROL METHOD FOR SAME

Provided are: a wind power generation device which can reduce a yaw deviation angle to increase power generation amount while reducing yaw driving amount to suppress mechanical wear; and a control method for same. This wind power generation device (1) is provided with: a rotor (4) that rotates upon receiving wind; a nacelle (5) that rotatably supports the rotor (4); a tower (7) that supports the nacelle in a yaw-rotatable manner; an adjustment device (8) that adjusts the yaw of the nacelle (5) on the basis of a yaw control command; and a control device (9) that determines the yaw control command to be transmitted to the adjustment device (8). The control device (9) is provided with: a yaw deviation angle calculation unit (301) that calculates a yaw deviation angle from the wind direction measured by a wind direction and velocity measuring unit and the direction of the rotor (4); an averaging unit (305) that averages the yaw deviation angle within a predetermined period; and a control command creation unit (306) that determines the yaw control command on the basis of the averaged yaw deviation angle, wherein the averaging unit (305) decreases the averaging time constant when the level of disturbance in the wind conditions is high, and advances the timing of starting and/or stopping the yaw rotation with respect to the yaw deviation angle.