| 摘要 |
Wind energy plants, as a rule, have an active drive unit for following the wind direction. The above turns the machine house of the wind energy plant, such that the rotor blades of the rotor are arranged in the direction of the wind. Said drive unit required for following the wind direction is usually a n azimuth drive unit, normally arranged, along with the corresponding azimuth bearings, between the tower head and the machine house. For small wind energ y plants, normally one adjustment drive unit is sufficient, larger wind energy plants are usually equipped with several azimuth drive units. The aim of the invention is to improve the azimuth drive for wind energy plants, such that the above defined problems may be avoided, a simple azimuth drive unit construction is achieved, a uniform load distribution for each azimuth drive unit is guaranteed and undesired torque fluctuations for the individual unit s are avoided. Said aim is achieved whereby a wind energy plant with a machine house, which has a rotor with at least one rotor blade and an adjuster unit for the adjustment of the machine house to give the desired orientation of t he rotor in the direction of the wind. Said adjuster unit comprises a three-pha se asynchronous motor as drive unit, which is supplied with a three-phase suppl y of variable frequency for an adjustment of the machine house. |
