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Design of a Micro-hydrokinetic Power Generation System
Implement an Oscillating Hydrofoil in river
Graduate Research AssistantInternational Arctic Research CenterDept. of Electrical & Computer EngineeringUniversity of Alaska Fairbanks
Rui Han, Jessica Cherry, Robert Kallenberg
Short Intro
Project DefinitionSurvey of the micro-hydro technology
and resources.
Design an oscillating hydro-foil energy conversion system for hydrokinetic electric power generation in river and tidal.
Background-Nation WideClimate change calls for renewable energyIn 2009, U.S. hydrokinetic Power ≤ 1 MKW, hydropower > 77,000 MKWAs of 2009, the FERC issued 146 applications to study 9,000 MKW
Prediction: Hydrokinetic Energy could provide 13,000 MKW to the U.S. by 2025
EIA Annual Energy Outlook 2010
Quadrillion Btu
Background-State wideResources
Many big rivers90 % of U.S. tidal50% of U.S. wave
Energy PolicySB 220: 18 million increase to 250 million.HB 306: 50% renewable electricity by 2025.
Uneven Electricity Cost Across StateHigh energy cost for rural regions, most of
which are near rivers
TechnologyTurbine (Dominant)
Verticalaxis
• Easy deploy• Less efficient
Cross flow
• Modular design
• Mooring issues
Axial flow• Most efficient• Unidirectional
RivGen™ by ORPC
“EnCurrent” by New Eenrgy
SmarTurbine™ by FFP
* Picture courtesy of the original company
Our TechnologyHeave and pitch movement
Motion controlled by the trim tab.
Less hazardous to fish
Genetically prevented from debris attacks
System Diagram
ExperimentPrototype manufacture • Hydrofoil• Scotch Yoke• PMG Coupling
Verify the original idea • Oscillating? • Linear to Rotational?
Estimate the capacity
ExperimentPrototype manufacture • Hydrofoil• Scotch Yoke• PMG Coupling
Verify the original idea • Oscillating? • Linear to Rotational?
Estimate the capacity
ExperimentPrototype manufacture • Hydrofoil• Scotch Yoke• PMG Coupling
Verify the original idea • Oscillating? • Linear to Rotational?
Estimate the capacity
ExperimentPrototype manufacture • Hydrofoil• Scotch Yoke• PMG Coupling
Verify the original idea • Oscillating? • Linear to Rotational?
Estimate the capacity
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ExperimentPrototype manufacture • Hydrofoil• Scotch Yoke• PMG Coupling
Verify the original idea • Oscillating? • Linear to Rotational?
Estimate the capacity
ExperimentPrototype manufacture • Hydrofoil• Scotch Yoke• PMG Coupling
Verify the original idea • Oscillating? • Linear to Rotational?
Estimate the capacity
Future workNumerical ModelingElectronic designSystem integrationOptimization Other electrical machinery choicesEconomic StudyCommercialization?
Thank you!
Acknowledgement to Alaska EPSCoR NSF award #EPS-0701898 and the state of Alaska.