Control co-design of 13 MW downwind two-bladed rotors to achieve 25% reduction in levelized cost of wind energy

Pao, Lucy Y.; Zalkind, Daniel S.; Griffith, D. Todd; Chetan, Mayank; Selig, Michael S.; Ananda, Gavin K.; Bay, Christopher J.; Stehly, Tyler; Loth, Eric

doi:10.1016/j.arcontrol.2021.02.001

Title: Control co-design of 13 MW downwind two-bladed rotors to achieve 25% reduction in levelized cost of wind energy

Journal Article · Mon Mar 22 00:00:00 EDT 2021 · Annual Reviews in Control

DOI:https://doi.org/10.1016/j.arcontrol.2021.02.001· OSTI ID:1778199

^[1]; Zalkind, Daniel S. ^[1];

^[2];

^[2]; Selig, Michael S. ^[3]; Ananda, Gavin K. ^[3];

^[4]; Stehly, Tyler ^[4]; Loth, Eric ^[5]

Univ. of Colorado, Boulder, CO (United States)
Univ. of Texas, Dallas, TX (United States)
Univ. of Illinois at Urbana-Champaign, IL (United States)
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Univ. of Virginia, Charlottesville, VA (United States)

Wind energy is recognized worldwide as cost-effective and environmentally friendly and is among the fastest-growing sources of electrical energy. To further decrease the cost of wind energy, wind turbines are being designed at ever larger scales, which is challenging due to greater structural loads and deflections. Large-scale systems such as modern wind turbines increasingly require a control co-design approach, whereby the system design and control design are performed in a more integrated fashion. We overview a two-bladed downwind morphing rotor concept that is expected to lower the cost of energy at wind turbine sizes beyond 13 megawatts (MW) compared with continued upscaling of traditional three-bladed upwind rotor designs. We describe an aero-structural-control co-design process that we have used in designing such extreme-scale wind turbines, and we discuss how we were able to achieve a 25% reduction in levelized cost of energy for our final turbine design compared to a conventional upwind three-bladed rotor design.

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

Sponsoring Organization:: USDOE Advanced Research Projects Agency - Energy (ARPA-E)

Grant/Contract Number:: AC36-08GO28308

OSTI ID:: 1778199

Alternate ID(s):: OSTI ID: 1815270

Report Number(s):: NREL/JA-5000-79765; MainId:36985; UUID:19ea6cb7-2c6b-406a-af2d-9c3013802f5c; MainAdminID:21262

Journal Information:: Annual Reviews in Control, Vol. 51; ISSN 1367-5788

Publisher:: International Federation of Automatic Control - ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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