A simple method for modelling fatigue spectra of small wind turbine blades

Evans, Samuel; Dana, Scott; Clausen, Philip; Wood, David

doi:10.1002/we.2588

A simple method for modelling fatigue spectra of small wind turbine blades

Journal Article · Wed Nov 04 23:00:00 EST 2020 · Wind Energy

DOI:https://doi.org/10.1002/we.2588· OSTI ID:1755715

^[1]; ^[2]; Clausen, Philip ^[1]; Wood, David ^[3]

Univ. of Newcastle, Callaghan, NSW (Australia)
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Univ. of Calgary, AB (Canada)

Small-scale wind turbines have market opportunities in distributed energy generation applications but face future challenges in remaining cost competitive compared with solar photovoltaic systems. High unit costs can be attributed to design conservatism when calculating fatigue loads of key structural components such as the blades. In this study, we use the aeroelastic software FAST to highlight limitations of the International Electrotechnical Commission 61400-2:2013 small wind turbine design standard for calculating fatigue life using the simplified load model. We present a modified method for calculating the fatigue spectra of small wind turbine blades. An advantage of this method is that it does not require complex aeroelastic simulations or field measurements. This modified method is intended to be implemented early in the blade design stage, such as during rotor optimization simulations, allowing for multiple rotor configurations to be rapidly compared.

View Accepted Manuscript (DOE)

Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Wind Energy Technologies Office

Grant/Contract Number:: AC36-08GO28308

OSTI ID:: 1755715

Report Number(s):: NREL/JA--5000-75971; MainId:6711; UUID:a3ca8f12-c742-ea11-9c2f-ac162d87dfe5; MainAdminID:19035

Journal Information:: Wind Energy, Journal Name: Wind Energy Journal Issue: 6 Vol. 24; ISSN 1095-4244

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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17 WIND ENERGY
FAST
aeroelastic modeling
simplified load model
wind energy

A simple method for modelling fatigue spectra of small wind turbine blades

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References (15)

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