Sandia is planning a wind turbine with 200m blades


Sandia is planning a wind turbine with 200m blades

200m wind turbine blades

 
SNL is based in the US and ‘seeks to support the creation of a secure energy future for the US by using its capabilities to enable an uninterrupted and enduring supply of energy from domestic sources, and to assure the reliability and resiliency of the associated energy infrastructure’. Funded by the Department of Energy’s (DOE) Advanced Research Projects Agency-Energy program, they are conducting research on extreme-scale Segmented Ultralight Morphing Rotor (SUMR).
 
The project requires SNL to design a low-cost 50MW offshore wind turbine with blades longer than 650ft, which is roughly 2.5 times larger than any existing blades.
 
Lead blade designer on the project and technical lead for Sandia’s Offshore Wind Energy Program, Todd Griffith said:
 
“Conventional upwind blades are expensive to manufacture, deploy and maintain beyond 10-15 MW. They must be stiff, to avoid fatigue and eliminate the risk of tower strikes in strong gusts. Those stiff blades are heavy, and their mass, which is directly related to cost, becomes even more problematic at the extreme scale due to gravity loads and other changes.”
 
The larger blades will be manufactured in segments, making them easier and less expensive to transport. The blades will also be sited down-wind as opposed to the typical up-wind configuration.
 
The concept was inspired by the way that palm tree branches move in high winds, the sections will bend with the wind, thereby reducing the overall load on the blades.
 
Griffith said, “At dangerous wind speeds, the blades are stowed and aligned with the wind direction, reducing the risk of damage. At lower wind speeds, the blades spread out more to maximize energy production.”
 

Posted By Sally on February 1, 2016 | 0 Comment

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