SUMMARY

Offshore Wind: from Components to Wind Farm designIñigo Mendikoa, Josean Galván, Miren Sanchez-Lara, Carlos Garrido, German Pérez

Tecnalia R&I Email: inigo.mendikoa@tecnalia.com; josean.galvan@tecnalia.com

BMEW 27-31 March 2017, Bilbao, Spain

Site and Meteocean Conditions Analysis

• Wind / wave / current characterisation

• Design Load Cases definition

• Umbilical cable definition

• Underwater electrical connectors design

Foundation

• Mooring systems design: quasi-static/dynamic simulation tool developed, time

domain dynamic simulations

• Bottom-fixed foundation: pile, dead weight

Wind Turbine

Wind Turbine Support Structure

Electrical Equipment

Offshore Wind Farm

• Tower and transition piece design according to WT manufacturer requirements

• WT control adaptation to offshore conditions

• New generation Wind Turbine electrical generators (superconducting generator)

• Detailed aero-servo-elastic analysis of the Wind Turbine

• Floating solutions design: semisibmersible / spar / TLP / hybrid concepts

• Active ballast to control floater stabilisation

• Bottom-fixed support structures analysis: monopile / tripod / gravity base / jacket

• Detailed hydro-servo-elastic analysis of the Support Structure

• Farm layout optimisation

• Logistics & Installation: great suppliers database and industrial collaborators

• Operation & Maintenance

• Risk analysis

• Costs estimation

Numerical and experimental Multiphysics

• Multiphysics analysis: determine aero-hydro-servo-elastic behaviour of the OWT

• Numerical model validation against experimental tests

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A validated numerical model is a powerful tool that enables the simulation of a

plethora of LCs, where the behaviour of the offshore wind turbine can be studied in order

to optimise the design of the WT, the support structure (fixed or floating) and

auxiliary equipment.

OC5 experimental set-up for pile and semisubmersible tests

University of Colorado/NREL

TECNALIA works in all the main aspects related to floating offshore wind, from site conditions analysis to new generation Wind Turbine, supporting structure, mooring

systems, and underwater electrical equipment design, and it is particularly involved in coupled numerical simulation tools for calculating dynamics of offshore wind turbines

(OWT). In order to calculate motions and loads through multiphysics analysis, an OWT modeling has to consider support structure hydrodynamics, tower mechanics, station

keeping system, rotor-nacelle assembly and control system behaviour. TECNALIA is working in different floating offshore wind projects using and testing aerodynamic and

hydrodynamic coupled tools performing time domain simulations, which are also validated with experimental testing.

EMEC

NREL