Aerodynamic rotor design for a 25 MW offshore downwind turbine

Jeong, Michael; Loth, Eric; Qin, Chris; Selig, Michael; Johnson, Nick

doi:10.1016/j.apenergy.2023.122035

Applied Energy

2024

DOI: 10.1016/j.apenergy.2023.122035

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Aerodynamic rotor design for a 25 MW offshore downwind turbine

Michael Jeong,

Eric Loth,

Chris Qin

et al.

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2024

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Cited by 4 publications

References 12 publications

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Effective utilization of unidirectional laminates for mass reduction in composite blades of multi-MW wind turbines

Attar,

Hayat

2024

Advanced Composite Materials

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Effective utilization of unidirectional laminates for mass reduction in composite blades of multi-MW wind turbines

Attar,

Hayat

2024

Advanced Composite Materials

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A function improving tip loss correction of blade-element momentum theory for wind turbines

Zhong,

Wang,

Shen

et al. 2024

International Journal of Sustainable Energy

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Comparison of 25 MW downwind and upwind turbine designs with individual pitch control

Phadnis,

Escalera Mendoza,

Jeong

et al. 2024

J. Phys.: Conf. Ser.

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As conventional upwind wind turbines grow larger, the increased mass and flexibility of the longer blades present challenges concerning costs, structural loads, and safety constraints such as tower clearance. At extreme scales, wind turbines in a downwind configuration may provide a feasible alternative to address these challenges by allowing lightweight, flexible blades that can reduce capital costs and blade loads while maintaining safety margins. Downwind turbine blades suffer from increased fatigue loading due to the tower shadow effect. In this study, novel downwind, three-bladed wind turbine designs at 25 MW rating with lightweight, flexible blades are evaluated and compared in terms of power production and structural loading. To obtain a baseline performance, a standard collective blade pitch wind turbine controller is implemented for the two downwind and one upwind turbine designs. Individual pitch control is then added for the downwind turbines to reduce structural fatigue on the turbine blades. In summary, the two downwind turbine designs that differ in rotor pre-coning and shaft tilt angles using collective and individual pitch control are compared against a conventional upwind turbine with collective pitch control at the same scale under turbulent wind conditions.

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Aerodynamic rotor design for a 25 MW offshore downwind turbine

Cited by 4 publications

References 12 publications

Effective utilization of unidirectional laminates for mass reduction in composite blades of multi-MW wind turbines

Effective utilization of unidirectional laminates for mass reduction in composite blades of multi-MW wind turbines

A function improving tip loss correction of blade-element momentum theory for wind turbines

Comparison of 25 MW downwind and upwind turbine designs with individual pitch control

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