风力机叶片平面内振动的准滑模控制  

NEW QUASI-SLIDING MODE CONTROL OF IN-PLANE VIBRATIONS OF WIND TURBINE BLADES

作　　者：董彬 李志军[1] 侯志波[1] 张立新[2] Dong Bin;Li Zhijun;Hou Zhibo;Zhang Lixin(School of Civil&Architecture Engineering,Xi’an Technological University,Xi’an 710032,China;School of Mechatronic Engineering,Xi’an Technological University,Xi’an 710032,China)

机构地区：[1]西安工业大学建筑工程学院,西安710032 [2]西安工业大学机电工程学院,西安710032

出　　处：《太阳能学报》2021年第7期333-339,共7页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51678480);陕西省重点研发计划(2019GY-079);陕西省教育厅专项科研计划(11JK0543);西安工业大学校长基金重点项目(XAGDXJJ0919)。

摘　　要：为了减小风力机叶片在过大风荷载作用下平面内振动位移,选取在叶片内安装新型电磁惯性质量阻尼器控制叶片过大振动效应,采用含饱和函数指数趋近律的准滑模控制算法来计算最优控制力,并设计相应的半主动控制策略。采用NREL-5 MW风力发电机组进行建模和数值仿真分析,结果表明:准滑模控制状态下叶尖位移响应较未受控状态下明显减小;半主动控制状态下叶尖位移响应接近于主动控制状态下位移响应;结构参数不确定情况下,准滑模控制算法具有较强的鲁棒性。Aiming for reducing the in-plane peak displacement responses of wind turbine blades subjected to ultra-strong wind load,in this paper,a new electromagnetic inertial mass damper(EIMD)is applied to vibration control of wind turbine blades and the corresponding semi-active control strategy is proposed by using a new quasi-sliding mode active control algorithm.In order to avoid excessive chattering effect of the sliding mode controller,the quasi-sliding mode control law is deduced on the basis of the saturation function.The effectiveness of new quasi-sliding mode control algorithm is demonstrated by application to a real-life NREL-5 MW wind turbine.The simulation results show that the peak of the tip displacement of the wind turbine blades using new quasi-sliding mode control is significantly lower than that under uncontrolled conditions,and the tip displacement responses using semi-active control are virtually the same as those using new quasi-sliding mode control.Moreover,the robustness of the proposed control method is verified by the 5%,10%and 20%reduction of the original stiffness of the wind turbine blades,respectively.

关 键 词：风力机 叶片 滑模控制 鲁棒性 半主动控制 电磁惯性质量阻尼器 

分 类 号：TU311.4[建筑科学—结构工程]