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Conclusions Based on the pathway analysis and findings, our industry understanding, and familiarity with U.S. DOE national laboratory core competence, we identified a number of high value R&D topics that could be pursued to enable development of supersized blades. It is important to note that many R&D topics are viewed as having benefits that could be applied to support some or all of the pathways studied. As mentioned previously, this project is not intended to “select a pathway”, thus high-value R&D topics are ones that have a significant impact across multiple pathways and leverage areas where U.S. DOE has strong competence, unique facilities, capacity to take high risks, and a long-term view. Figure ES-9 presents DNV GL’s identification of R&D topics that could enable supersized blades. We crossreference these topics to each innovation pathway and indicate our judgement on the degree of impact a given R&D topic would have on enabling or addressing challenges in a given pathway. The pathways are ordered in terms of potential impact for lowering LCOE. Finally, we apply our judgement on DOE laboratories’ ability to impact and advance the given R&D topic.

R&D Pathway Enabling

R&D Topic Aerodynamic design (lift-enhancing) Rotor configuration options (e.g., downwind) Advanced aeroelastic modeling (dynamic stability, deflections) Advanced controls / sensor technologies Blade leading-edge erosion Blade/rotor aeroacoustics High-stiffness / low-cost materials (e.g., industrial carbon fiber)

1. Innovative transportation

      

Structural joint technology Thermoplastic materials (mechanical properties) Thermoplastic materials (fabrication and joining) Robotic fabrication (including additive manufacturing) High-capacity airship development

   

2. Hybrid solutions (segmented blades)

3. On-site manufacturing

Core DOE Lab competence

      

          

          

   Key:

  

Strong impact Moderate impact Low impact

Figure ES-9 R&D topics to enable supersized blades

DNV GL – Document No.: 10080081-HOU-R-01, Issue: C, Status: FINAL www.dnvgl.com

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Supersized wind turbine blade study  

R&D pathways for supersized wind turbine bladesSupersized wind turbine blade studyLawrence Berkeley National LaboratoryDocument Number: 1008...

Supersized wind turbine blade study  

R&D pathways for supersized wind turbine bladesSupersized wind turbine blade studyLawrence Berkeley National LaboratoryDocument Number: 1008...

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