MHK Technologies/DeltaStream

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Technology Profile
Primary Organization Tidal Energy Ltd
Project(s) where this technology is utilized MHK Projects/DeltaStream
MHK Projects/DeltaStream Pembrokeshire
Technology Resource
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Technology Type
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Axial Flow Turbine
Technology Readiness Level
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TRL 1-3: Discovery / Concept Definition / Early Stage Development & Design & Engineering
Technology Description The DeltaStream device is a nominal 1 2MW unit which sits on the seabed without the need for a positive anchoring system generating electricity from three separate horizontal axis turbines mounted on a common frame The use of three turbines on a single circa 30m wide triangular frame produces a low center of gravity enabling the device to satisfy its structural stability requirements including the avoidance of overturning and sliding The device utilizes fixed pitch blades designed to maximize the energy extracted from the tidal flow distribution at the deployment site A mechanical yaw system allows the nacelles to oscillate by a control system which is programmed to seek the optimum flow The rotors extract the energy from the water flow at an elevation of between approximately 5 20m above the seabed assuming a 15m rotor diameter

Technology Dimensions
Device Testing
Date Submitted 9/28/2010

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