Vibration control of wind turbine by using active mass damper equipped with a magnetic fluid

Document Type : Research Article


School of civil engineering, Iran university of science and technology, Tehran, Iran


Today, due to the importance of the environment, the use of renewable energy-generating structures has received more attention. Therefore, dynamic analysis of such structures under natural hazards, especially earthquakes, is important. One of these structures is the wind turbine. In this article, its vibration is controlled by an active mass damper equipped with a magnetic fluid damper. The mass values used for tuned mass dampers are equal to 10, 20, 40 and 60 tons. In addition, two types of MR dampers are considered. Dynamic analysis of the wind turbine subjected to different earthquakes is studied and appropriate evaluation indexes are defined. The performance of the active mass dampers is compared according to the evaluation indexes and the optimal active damper is introduced. In this article, a 5MW wind turbine constructed by the National Energy Laboratory Renewable is considered. the multi-degree freedom model structure used for this wind turbine is linear. The wind turbine is subjected to near and far field earthquakes in an out-of-plane direction, then its vibration is mitigated by using the proposed active mass dampers. Finally, the results show a significant reduction in displacement and velocity of the wind turbine tower which is equipped with the optimal active mass damper.


Main Subjects

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