公开(公告)号：US20090200804A1

公开(公告)日：2009-08-13

申请号：US12429558

申请日：2009-04-24

申请人： Thomas Steiniche Bjertrup Nielsen ,  Bo Juul Pedersen ,  Christopher John Spruce

发明人： Thomas Steiniche Bjertrup Nielsen ,  Bo Juul Pedersen ,  Christopher John Spruce

IPC分类号： F03D7/00

CPC分类号： F03D7/0256 ,  F03D7/0212 ,  F05B2260/96 ,  F05B2270/334 ,  Y02E10/723

摘要： The invention relates to a method for damping tower oscillations in the tower of an active stall controlled wind turbine. The method comprises the steps of operating two or more blades of the wind turbine in a stall condition, detecting if the tower oscillates beyond a predefined level, and establishing different stall conditions between at least two of the blades, wherein the different stall conditions are established by offsetting the pitch angle of at least a first blade in relation to the pitch angle of one further blade. The invention further relates to an active stall controlled wind turbine and use hereof.

摘要翻译： 本发明涉及一种用于在主动失速控制的风力涡轮机的塔架中阻尼塔架振荡的方法。 该方法包括以下步骤：在失速状态下操作风力涡轮机的两个或更多个叶片，检测塔架是否振荡超出预定水平，以及在至少两个叶片之间建立不同的失速条件，其中建立不同的失速条件 通过相对于另一个叶片的俯仰角抵消至少第一叶片的桨距角。 本发明还涉及一种主动失速控制风力涡轮机及其用途。

公开(公告)号：US06695588B1

公开(公告)日：2004-02-24

申请号：US10009463

申请日：2002-01-16

申请人： Thomas Steiniche Bjertrup Nielsen

发明人： Thomas Steiniche Bjertrup Nielsen

IPC分类号： F03B102

CPC分类号： F03D80/00 ,  F03D13/20 ,  F05B2200/23 ,  F05B2240/95 ,  F05B2260/96 ,  Y02E10/721 ,  Y02E10/726 ,  Y10S416/06 ,  Y10S416/50

摘要： Damping of oscillations of the first bending mode of a wind turbine is performed means of one or more containers partly filled with a liquid for damping oscillations of the first natural bending frequency of the wind turbine. The damping means comprises a plurality of box shaped containers having a square cross section and being partly filled with liquid so as to provide a unidirectional damping with a logarithmic decrement of oscillations of the first natural bending frequency of the wind turbine of at least 4-8%. For off-shore wind turbines, the combined excitation of the wind and sea waves requires more damping, the damping is preferably equivalent to a logarithmic decrement of 10-15%. Furthermore, the invention relates to damping of oscillation of the second bending mode of a wind turbine and to the combined damping of oscillations of the first as well as the second bending mode of the wind turbine.

摘要翻译： 执行风力涡轮机的第一弯曲模式的振荡的阻尼是由一个或多个容器部分地填充有用于阻止风力涡轮机的第一自然弯曲频率的振荡的液体的装置。 阻尼装置包括多个具有正方形横截面且部分地填充有液体的盒形容器，以便提供单向阻尼，其中风力涡轮机的第一自然弯曲频率的振荡的对数递减至少为4-8 ％。 对于离岸风力涡轮机，风和海浪的组合激励需要更多的阻尼，阻尼优选等于10-15％的对数减量。 此外，本发明涉及风力涡轮机的第二弯曲模式的振荡的阻尼以及风力涡轮机的第一和第二弯曲模式的振荡的组合阻尼。