RAFT: Reconfigurable Array of High-Efficiency Ducted Turbines for Hydrokinetic Energy Harvesting

The project team, led by the University of Michigan, proposes the RAFT concept as a solution for hydrokinetic energy harvesting. The project aims to develop multi-physics models, design processes, and optimization tools; augment control and system health monitoring algorithms; demonstrate novel RAFT concepts; and deliver an integrated solution for riverine and tidal applications. The project team brings expertise in hydrodynamics, structures, electrical systems, iterative optimization, and control co-design. The proposed RAFT, made up of multiple micro-turbines, has a modularized architecture with reconfigurable units, making it adaptable to different applications and marine environments. The innovative new turbine designs, along with distributed load control and regulator concepts, significantly reduce the levelized cost of energy. In-situ real-time optimization-based control and distributed continuous system health monitoring optimize RAFT's features to achieve performance, resiliency, reliability, and cost targets. Extensive modeling and experimental validations will mitigate identified technical risks.