Grand challenges in the science of wind energy

P Veers, K Dykes, E Lantz, S Barth, CL Bottasso… - Science, 2019 - science.org
BACKGROUND A growing global population and an increasing demand for energy services
are expected to result in substantially greater deployment of clean energy sources. Wind …

On critical aeroelastic modes of a tri-rotor wind turbine

OT Filsoof, A Yde, P Bøttcher, X Zhang - International Journal of …, 2021 - Elsevier
This paper presents the first investigation on a high-fidelity linear time-invariant aeroelastic
model of multi-rotor wind turbines with three-bladed rotors. The modeling method developed …

[HTML][HTML] Vortex-induced vibrations of wind turbines: From single blade to full rotor simulations

GR Pirrung, C Grinderslev, NN Sørensen, R Riva - Renewable Energy, 2024 - Elsevier
Vortex-induced vibrations (VIVs) of wind turbine blades are a phenomenon that cannot be
predicted sufficiently accurate by low fidelity methods. High fidelity methods, such as …

Linear time periodic system approximation based on Floquet and Fourier transformations for operational modal analysis and damage detection of wind turbine

A Cadoret, ED Goy, JM Leroy, JL Pfister… - Mechanical Systems and …, 2024 - Elsevier
Abstract Operational Modal Analysis (OMA) identifies modal properties of mechanical
structures from vibration data collected from a few sensors under operation conditions …

Stability analysis of vortex-induced vibrations on wind turbines

R Riva, SG Horcas, NN Sørensen… - Journal of Physics …, 2022 - iopscience.iop.org
A parked wind turbine can be subjected to large yaw angles, which causes vortex shedding.
Under some particular inflow conditions, the interaction between the shed vorticity and the …

An intuitive representation and analysis of multi‐rotor wind turbine whirling modes

OT Filsoof, X Zhang - Wind Energy, 2022 - Wiley Online Library
A multi‐rotor wind turbine (MRWT) is a concept that can reduce the size of the rotor blades
compared to a single‐rotor wind turbine (SRWT). Making a cost‐optimized MRWT requires a …

Application of Time-Variant Systems Theory to the Unsteady Aerodynamics of Rotary Wings

D Quero - AIAA Journal, 2024 - arc.aiaa.org
This work employs the principles of time-variant systems theory to investigate the unsteady
aerodynamics of rotary-wing configurations under periodic equilibrium conditions. Their …

Aeroelastic Stability Analysis of a Quad-Rotor Wind Turbine

E Ferede, A Stillman, F Gandhi - Journal of Physics: Conference …, 2022 - iopscience.iop.org
This paper presents the aeroelastic stability analysis of a quad-rotor wind turbine and
identifies modes with low damping that are otherwise not present on a single-rotor wind …

Efficient calculation of stabilization parameters in RF power amplifiers

L Mori, I Lizarraga, A Anakabe… - IEEE Transactions …, 2020 - ieeexplore.ieee.org
This article proposes an efficient method for the calculation of the stabilization parameters in
RF power amplifiers operating in periodic large-signal regimes. Stabilization is achieved by …

A Simplified Dynamic Strength Analysis of Cardboard Packaging Subjected to Transport Loads

D Mrówczyński, T Gajewski, T Garbowski - Materials, 2023 - mdpi.com
The article presents a simplified method for determining the strength of corrugated board
packaging subjected to dynamic transport loads. The proposed algorithm consists of several …