The Effect of Tuned Mass Damper Mass Ratio on Wind Turbine Vibration Mitigation

Abstract

This paper examines the efficacy of Tuned Mass Dampers (TMDs) in mitigating vibration in wind turbines under diverse excitation force conditions. The impact of TMD on the response of a wind turbine exposed to sinusoidal and random wind forces, at varying mass ratios μm: 0.02, 0.05, 0.10, and 0.20, was assessed through the use of a MATLAB SIMULINK model. The findings indicate that TMDs markedly attenuate vibration when subjected to sinusoidal forces, particularly at higher TMD mass ratios. In contrast, the reduction in vibration level in the presence of random wind forces is relatively modest, becoming more pronounced at higher TMD mass ratios. In addition, the internal forces generated by incorporating the TMD into the system were calculated for different mass ratio values. It was noted that these forces increased in proportion to the mass ratio, although they remained within reasonable limits. However, an increase in the TMD mass ratio has been observed to result in a corresponding increase in these forces. This underscores the importance of meticulous mass ratio selection for the optimal functioning of TMD systems. It suggests that dealing with complex, broadband excitation may entail inherent limitations. The findings of this study may prove valuable in enhancing the understanding of the stability and lifetime of wind turbines under dynamic wind conditions.