POD-Based Sparse Stochastic Estimation of Wind Turbine Blade Vibrations
Abstract
This study presents a framework for estimating the full vibrational state of wind turbine blades from sparse deflection measurements. The identification is performed in a reduced-order space obtained from a Proper Orthogonal Decomposition (POD) of high-fidelity aeroelastic simulations based on Geometrically Exact Beam Theory (GEBT). In this space, a Reduced Order Model (ROM) is constructed using a linear stochastic estimator, and further enhanced through Kalman fusion with a quasi-steady model of azimuthal dynamics driven by measured wind speed. The performance of the proposed estimator is assessed in a synthetic environment replicating turbulent inflow and measurement noise over a wide range of operating conditions. Results demonstrate the method's ability to accurately reconstruct three-dimensional deformations and accelerations using noisy displacement and acceleration measurements at only four spatial locations. These findings highlight the potential of the proposed framework for real-time blade monitoring, optimal sensor placement, and active load control in wind turbine systems.
Cite
@article{arxiv.2504.08505,
title = {POD-Based Sparse Stochastic Estimation of Wind Turbine Blade Vibrations},
author = {Lorenzo Schena and Wim Munters and Jan Helsen and Miguel A. Mendez},
journal= {arXiv preprint arXiv:2504.08505},
year = {2025}
}