Wind power plant and method for operating the same

Abstract

The invention is directed to a high-power wind energy installation, wherein the rotor blades, to minimize the static and/or dynamic structural load and/or to damp vibrations, for example by generating counterforces to compensate for interference forces and moments, can be adjusted even when a constant wind velocity vdoes not warrant it, and to a method for operating such a wind energy installation; it is provided according to the invention to configure at least one rotor blade bearing therein as a rolling bearing that is optimized for a high number of inner race revolutions in that the total dynamic axial load rating C, defined according to DIN ISO 281, of all those rows (μ) of a utilized rolling bearing according to DIN ISO 281 which participate in force transmission in an axial direction is at least 1.5 times the dynamic axial load rating Caccording to DIN ISO 281 of a double-row ball slewing bearing of comparable dimensions in terms of the cross-sectional area of the bearing and the circumference centered on the centroid, and having mutually identical balls in two rows and a support angle α of 45°; and/or in that the rated life L, defined according to DIN ISO 281; of a utilized rolling bearing is at least 3.375 times the life L, calculated according to DIN ISO 281, of a double-row ball slewing bearing of comparable dimensions in terms of the cross-sectional area of the bearing and the circumference centered on the centroid, and having mutually identical balls in both rows and a support angle α of 45°.