The following challenges have been overcome through close cooperation between
LM Wind Power and Alstom Wind in the design phase of the Haliade 150 – 6MW
wind turbine:
• Advanced control strategies together with Blade Monitoring System allow:
10% reduction of loads and blade deflection
26Tn blade mass
3.2m blade root diameter
• Wind turbine and blade geometry optimization allow maximum blade deflection
without compromising the functionality and manufacturability of the complete
wind turbine:
This poster presents the latest development of a very large rotor dedicated to the
Haliade 150 – 6MW, a new generation of offshore wind turbine.
Fiber reinforced polyester blade technology has been pushed to a next level to
create a blade for offshore application of a challenging 73.5m length without using
carbon:
• Technology with strong track record
• Reduction of the entire wind turbine cost
• Reduction of the risks in the manufacturability
• Improvement of the protection against lightning
Blade geometry, including high performance thick airfoils and blade root
aerodynamic devices, has been optimized for a balance between wind turbine
loads and wind park performance: the Haliade 150 - 6MW wind turbine reaches
high capacity factors and at the same time produces a low thrust to minimize the
loss of energy in the wind park cluster.
Introduction
Large rotor development for a new generation 6MW
offshore wind turbine D. Miguel, L. Feigl
Alstom Wind N. Toft, P. Hansen
LM Wind Power
PO.
137
Key Design Challenges
Conclusions
EWEA OFFSHORE 2011, 29 November – 1 December 2011, Amsterdam, The Netherlands
• Advanced thick airfoils along the blade span to guarantee good aerodynamic
performances with high bending stiffness:
Optimized for high lift to drag ratio
Optimized for high energy yield with reinforcement of aerodynamic devices
Reduction of loads thanks to a balance between optimum cL and maximum cL
Standard NACA 18% relative thickness vs. LM 24% rellative thickness airfoils
LM 73.5 Blade
Haliade 150 – 6MW wind turbine
LM 73.5 blade vortex
LM 73.5 blade T-spoiler