LIFES50+ Final Event Bilbao, 03 April 2019 Session: Floating substructure design Topic: OO-Star Wind Floater Håkon Andersen Dr.techn. Olav Olsen Qualification of innovative floating substructures for 10MW wind turbines and water depths greater than 50m The research leading to these results has received funding from the European Union Horizon2020 programme under the agreement H2020-LCE-2014-1-640741.
Outline • Short introduction to Dr.techn. Olav Olsen • Introduction to the OO-Star Wind Floater • Development of the 10MW floater • Benefits of the Lifes50+ • Conclusions 05 April 2019 2
DR.TECHN. OLAV OLSEN • Independent structural and marine consulting company • Founded in 1962 • Main office at Lysaker, 100 employees • Regional office in Trondheim • Contributes in all project phases, from concept development to decommissioning • Participates regularly in research and development projects 05 April 2019 3
OO-Star Wind Floater • Concrete floater • Robust design • Low quay side draft • Full assembly at quay side • Good scalability • Suitable for mass fabrication • Based on established offshore technology 05 April 2019 4
Key Figures Concrete Floater - Golfe de Fos Gulf of West of Unit Description Maine Barra Overall footprint, B x L 83 x 75 87 x 78 90 x 81 m c/c Shaft-Corner columns 36 37 38 m Height structure 30 33 36 m Operational Draft 20 22 22,5 m m 3 Concrete Volume 4824 5203 5700 Displacement, operation 22300 24100 25700 T 5
OO-Star Wind Floater – Design and Analysis 05 April 2019 6
OO-Star Wind Floater – Fabrication scheme 05 April 2019 7
OO-Star Wind Floater – Benefits of Lifes50+ • Upscaling to 10MW • Benchmarking with other developers • Common design requirements • Adapted floater to three sites • Basin and wind tunnel tests • Further development of cost estimates and fabrication scheme • Third party evaluations of the floater • Collaboration with other industry experts and research institutions • Turbine controller adaption Link to video from basin test 05 April 2019 8
OO-Star Wind Floater can accommodate large turbines OO Star Wind Floater - Substructure cost 150.00% 130.00% 110.00% 90.00% 70.00% 50.00% 30.00% 10.00% -10.00% 4 MW 6 MW 8 MW 10 MW Mild Hs=7m Medium Hs=11 Harsh Hs=15 Trendline indicates 30% reduced floater cost per MW from 8 to 16, from scaling effects alone 9
OO-Star Wind Floater – Conclusions • Developed for state of the art turbine size • Technically proven • Key benefits verified • Ready for full-scale demonstrator(s) to prepare for mass fabrication and future large scale developments. 1 0 05 April 2019
THANK YOU! www.lifes50plus.eu The research leading to these results has received funding from the European Union Horizon2020 programme under the agreement H2020-LCE-2014-1-640741. 11
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