基于控制方法的风机塔架减振研究

为利用控制方法减小兆瓦级风机运行过程中塔架的振动量,对塔架结构动态特性和塔架激励源动态特性进行了分析研究。以某2 MW机组为例,进行了塔架振动情况评估。基于评估结果,设计了增加气动阻尼的塔架振动控制方法,并进一步设计了直接加阻的主动控制结构,结合振动过大时主动降功率运行手段,实现了塔架振动的控制器干预。在许继WRTS-800和PRDS-600仿真实验平台上进行了仿真验证和等效疲劳载荷计算;在实验风场进行了现场实验,并对实验数据进行了统计分析。研究结果表明,采用该方法,塔架等效疲劳载荷明显减小,主动控制减振效果明显。

Study of wind turbine tower vibration reduction based on control method

In order to reduce the tower vibration of MW wind turbine in running,by the control methods,the dynamic characteristics of the tower and the excitation source dynamic characteristics of the tower were analyzed.As an example,the tower vibration assessment for a 2 MW wind turbine was carried out.Then,the control method was made to increase the aerodynamic damp of the tower oscillation according to the result of the assessment,and the architecture of the active control was designed to increase the damping,which works with the manipulate that power is reduced when the tower vibrate violently.Through them,the control for tower vibration reduction was achieved.The simulation was tested and equivalent fatigue load was evaluated on the XJ WRTS-800 and PRDS-600 simulation platform.In order to further prove that the method,the field tests in wind field experiment were carried out,the experimental statistics were analyzed.The experimental results show that,the tower equivalent fatigue load is reduced significantly,and the effect of active control vibration reduction is obvious.