Effect of Fiber Orientation of Bend-Twist Coupled Blades on the Structural Performance of the Wind Turbine System

Date

2017-01-05

Author

Şener, Özgün
Kayran, Altan

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The effect of fibre angle of bend-twist coupled mixed GFRP-CFRP wind turbine blades on the structural performance of the wind turbine system is studied. For the structural performance evaluation, the effect of the use of off-axis plies in the main spar caps of the bendtwist coupled wind turbine blade on the reduction of damage correspondent internal loads in the whole wind turbine system, electrical power produced, tower-blade end gap, and maximum stress in the blades are taken as major criteria. Different off-axis ply angles are used to create the bend-twist coupled blades. Two different multi-body dynamic codes, which use superelement and non-linear beam definitions respectively, are used to create the 5 MW multibody wind turbine models with different mixed GFRP-CFRP bend-twist coupled wind turbine blades. Ten-minute transient aeroelastic analyses of the wind turbine systems are performed for 6 normal turbulence wind definitions and structural performance of the wind turbine systems are evaluated based on the average damage correspondent internal load, electrical power produced, minimum tower-blade end gaps and stresses in the critical blade sections. It is shown that for the slightly over-rated average hub-height wind speed, bend-twist coupled blades provide substantial reduction in the load levels in the wind turbine with no major performance drawback.

URI

https://hdl.handle.net/11511/43489

DOI

https://doi.org/10.2514/6.2017-1167

Collections

Department of Aerospace Engineering, Conference / Seminar

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Citation Formats

Ö. Şener and A. Kayran, “Effect of Fiber Orientation of Bend-Twist Coupled Blades on the Structural Performance of the Wind Turbine System,” 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/43489.