| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an improved method and arrangement for the damping of tower-oscillations of a wind turbine. <P>SOLUTION: As for the solution regarding the method, a variable power-offset-signal is added to a power-reference-signal before the power-reference-signal is used for control. The variable power-offset-signal is based on a mean value of the power-reference-signal, and is based on the frequency of a tower. As for the solution regarding the device, a summation unit is provided between a power controller and a converter, and the summation unit is connected to the power controller and the converter so that the variable power-offset-signal is added to the power-reference-signal before the power-reference-signal is used for the control of the converter. The variable power-offset-signal is based on a mean value of the power-reference-signal, and is based on the frequency of the tower. <P>COPYRIGHT: (C)2010,JPO&INPIT |
