Structural design and optimization of a series of 13.2 MW downwind rotors

Yao, Shulong; Chetan, Mayank; Griffith, D. Todd

doi:10.1177/0309524X20984164

Structural design and optimization of a series of 13.2 MW downwind rotors

Journal Article · Mon Jan 11 23:00:00 EST 2021 · Wind Engineering

DOI:https://doi.org/10.1177/0309524X20984164· OSTI ID:1760028

^[1]; Chetan, Mayank ^[1]; Griffith, D. Todd ^[1]

Department of Mechanical Engineering, The University of Texas at Dallas, Richardson, TX, USA

The quest for reduced LCOE has driven significant growth in wind turbine size. A key question to enable larger rotor designs is how to configure and optimize structural designs to constrain blade mass and cost while satisfying a growing set of challenging structural design requirements. In this paper, we investigate the performance of a series of three two-bladed downwind rotors with different blade lengths (104.3-m, 122.9-m, and 143.4-m) all rated at 13.2 MW. The primary goals are to achieve 25% rotor mass and 25% LCOE reduction. A comparative analysis of the structural performance and economics of this family rotors is presented. To further explore optimization opportunities for large rotors, we present new results in a root and spar cap design optimization. In summary, we present structural design solutions that achieve 25% rotor mass reduction in a SUMR13i design (104.3-m) and 25% LCOE reduction in a SUMR13C design (143.4-m).

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Sponsoring Organization:: USDOE

Grant/Contract Number:: NONE; AR0000667

OSTI ID:: 1760028

Journal Information:: Wind Engineering, Journal Name: Wind Engineering Journal Issue: 6 Vol. 45; ISSN 0309-524X

Publisher:: SAGE PublicationsCopyright Statement

Country of Publication:: United Kingdom

Language:: English

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