Patent ID: 8322975
Filing Date: 2012-12-04
Classification: F03D,F05B,F16F,Y02E

Abstract:
1. A vibration control apparatus for a wind turbine generator accommodated and disposed inside a tower of the wind turbine generator, the apparatus comprising: a swinging rod extending in a vertical direction and configured to be suspended from a beam provided on an upper part of the tower via a first universal joint; a flange part extending outward in a horizontal direction from an upper end of the swinging rod; a pendulum including bobs attached to the swinging rod and said bobs being capable of moving up and down in the vertical direction; a plurality of attenuation devices each of whose upper end is attached to the beam with a second universal joint and whose lower end is attached to the flange part with a third universal joint; and at least two pendulaly tuned mass dampers each including the pendulum and the plurality of attenuation devices, wherein the adjoining bobs are connected to each other with a connecting device including a plurality of connecting rods, the connecting rods intersect with each other when the vibration control apparatus is viewed from the vertical direction, and the connecting rods are parallel to each other when the vibration control apparatus is viewed from the horizontal direction.