Sensitivity of Modal Parameters of an Offshore Wind Turbine to Operational and Environmental Factors: A Numerical Study: Preprint

Nasim Partovi-Mehr; Emmanuel Branlard; Anela Bajric; Sauro Liberatore; Eric Hines; Babak Moaveni

Sensitivity of Modal Parameters of an Offshore Wind Turbine to Operational and Environmental Factors: A Numerical Study: Preprint

Nasim Partovi-Mehr, Emmanuel Branlard, Anela Bajric, Sauro Liberatore, Eric Hines, Babak Moaveni

National Wind Technology Center

Research output: Contribution to conference › Paper

Abstract

The dynamics and performance of offshore wind turbines are sensitive to their structural properties, and in particular their modal parameters, i.e., natural frequencies, damping ratios and mode shapes. In this work, the sensitivity of the modal parameters of a 6 MW fixed-bottom offshore wind turbine to different operational and environmental conditions including wind speed and rotor speed is investigated. Effect of blade flexibility on the modal parameters of the system is also studied.

Original language	American English
Number of pages	10
State	Published - 2022
Event	40th International Modal Analysis Conference (IMAC XL) - Orlando, Florida Duration: 7 Feb 2022 → 10 Feb 2022

Conference

Conference	40th International Modal Analysis Conference (IMAC XL)
City	Orlando, Florida
Period	7/02/22 → 10/02/22

NREL Publication Number

NREL/CP-5000-81243

Keywords

aerodynamic damping
Campbell diagram
modal parameters
offshore wind turbine
OpenFAST

Access to Document

https://www.nrel.gov/docs/fy22osti/81243.pdf

Cite this

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title = "Sensitivity of Modal Parameters of an Offshore Wind Turbine to Operational and Environmental Factors: A Numerical Study: Preprint",

abstract = "The dynamics and performance of offshore wind turbines are sensitive to their structural properties, and in particular their modal parameters, i.e., natural frequencies, damping ratios and mode shapes. In this work, the sensitivity of the modal parameters of a 6 MW fixed-bottom offshore wind turbine to different operational and environmental conditions including wind speed and rotor speed is investigated. Effect of blade flexibility on the modal parameters of the system is also studied.",

keywords = "aerodynamic damping, Campbell diagram, modal parameters, offshore wind turbine, OpenFAST",

author = "Nasim Partovi-Mehr and Emmanuel Branlard and Anela Bajric and Sauro Liberatore and Eric Hines and Babak Moaveni",

year = "2022",

language = "American English",

note = "40th International Modal Analysis Conference (IMAC XL) ; Conference date: 07-02-2022 Through 10-02-2022",

}

Partovi-Mehr, N, Branlard, E, Bajric, A, Liberatore, S, Hines, E & Moaveni, B 2022, 'Sensitivity of Modal Parameters of an Offshore Wind Turbine to Operational and Environmental Factors: A Numerical Study: Preprint', Paper presented at 40th International Modal Analysis Conference (IMAC XL), Orlando, Florida, 7/02/22 - 10/02/22. <https://www.nrel.gov/docs/fy22osti/81243.pdf>

TY - CONF

T1 - Sensitivity of Modal Parameters of an Offshore Wind Turbine to Operational and Environmental Factors: A Numerical Study: Preprint

AU - Partovi-Mehr, Nasim

AU - Branlard, Emmanuel

AU - Bajric, Anela

AU - Liberatore, Sauro

AU - Hines, Eric

AU - Moaveni, Babak

PY - 2022

Y1 - 2022

N2 - The dynamics and performance of offshore wind turbines are sensitive to their structural properties, and in particular their modal parameters, i.e., natural frequencies, damping ratios and mode shapes. In this work, the sensitivity of the modal parameters of a 6 MW fixed-bottom offshore wind turbine to different operational and environmental conditions including wind speed and rotor speed is investigated. Effect of blade flexibility on the modal parameters of the system is also studied.

AB - The dynamics and performance of offshore wind turbines are sensitive to their structural properties, and in particular their modal parameters, i.e., natural frequencies, damping ratios and mode shapes. In this work, the sensitivity of the modal parameters of a 6 MW fixed-bottom offshore wind turbine to different operational and environmental conditions including wind speed and rotor speed is investigated. Effect of blade flexibility on the modal parameters of the system is also studied.

KW - aerodynamic damping

KW - Campbell diagram

KW - modal parameters

KW - offshore wind turbine

KW - OpenFAST

M3 - Paper

T2 - 40th International Modal Analysis Conference (IMAC XL)

Y2 - 7 February 2022 through 10 February 2022

ER -

Sensitivity of Modal Parameters of an Offshore Wind Turbine to Operational and Environmental Factors: A Numerical Study: Preprint

Abstract

Conference

NREL Publication Number

Keywords

Access to Document

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Cite this