Novel phase-bound magnetic vibration absorber for improved NVH performance of a wind turbine gearbox

© Proceedings of ISMA 2018 - International Conference on Noise and Vibration Engineering and USD 2018 - International Conference on Uncertainty in Structural Dynamics. All rights reserved. We propose a novel phase bound magnetic vibration absorber based on parallel combinations of magnetic springs. The corresponding design methodology is based on magnetic spring toolchain consisting of FE simulations of magnetic spring and 1D models together with system dynamics model. This approach is applied to an industrially relevant vibration reduction problem of gear meshing, specifically for wind turbine applications. In order to capture the relevant gearbox dynamic a semi-analytical Cai-Hayashi formulation of the gear stiffness is used in combination with ISO 6336 norm for spur gear capacity. We compare the modeling results to a state-of-the-art tuned mass damper approach, addressing the issues of tonalities in wind turbines. As opposed to the frequency bound vibration absorbers, the novel magnetic spring vibration absorber is order-selective, similarly to centrifugal pendulum absorbers, with the added value of a virtually infinite lifetime, no de-tuning issues, and feasible high-order vibration absorbers. ispartof: pages:4833-4845 ispartof: Proceedings of ISMA2018 International Conference on Noise and Vibration Engineering pages:4833-4845 ispartof: International Conference on Noise and Vibration Engineering location:Leuven, Belgium date:17 Sep - 19 Sep 2018 status: published