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10 RECOMENDATIONS FOR DOE R&D FUNDING PRIORITIES Based on the pathway analysis and findings, our industry understanding, and familiarity with U.S. DOE national laboratory range of core competence, we identified a number of high value research and development topics which could be pursued to enable development of supersized blades. It’s 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 strong 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 10-1 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 10-1 R&D topics to enable supersized blades High value R&D topics include: •

Further advances in high-stiffness/low-cost materials (e.g., industrial carbon fiber) and thermoplastics materials. Advances in materials available for blade fabrication would have significant benefits to all the possible pathways and leverages U.S. DOE core competence.

Advanced controls / sensor technologies could be applied to monitor/enable blade bending in transport, or monitor/control segmented blade loads such that lower weight blades can be achieved, or advance automation in field manufacturing technology.

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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