1. Tidal Energy: Technology Developments
Making tidal power a reality
Tidal Energy: Technology Developments
Cameron M. Johnstone
CEO
MRIA Forum, 3rd February 2017

2. Technology: Next Generation Tidal Turbine
The novel idea behind the contra-rotating turbine concept is to use two closely spaced dissimilar rotors, moving in opposite directions for deployment in lower velocity sites.
This has several technical and cost advantages over single rotor designs:
Increases the efficiency of energy capture
Eliminates complex blade pitch control
Reduces turbulent flow downstream
Minimises reactive torque, thus promising
a lower cost, flexible mooring possibility
Increases the dynamic stability
Increases relative shaft output speed
Electrical power take off is possible via direct drive of a contra-rotating generator.

3. Next Generation CoRMaT Technology
Axial Flux Generator
Contra-rotating Blades
Rear Buoyancy
Front Buoyancy
To Tether
Dual, Axial, Contra-rotating Rotors
Flooded, water cooled contra rotating generator

4. Phase 4: Full Scale EMEC Testing- Deeper water mooring system with Hydro-buoy Technology
Combines displacement buoyancy with hydrodynamic lift, varying mooring tension proportionally with tidal velocity.
Reduces amount of subsurface buoyancy required to create required tension
Maximises mooring tension, reducing mooring footprint
Patent filed in UK in Pat. App. No PCT process underway.

5. HydroBuoy and CoRMaT Full Scale Testing
at EMEC, Orkneys
EMEC Deployment, Feb 13
Hydro-buoy performance analysis

6. Phase 4: Full Scale System Testing
GFRP Blades
Contra-rotating radial PMG

7. Assembly and pre-Testing at Montrose staging post
Preparing for EMEC Deployment

8. Deploying at EMEC Launching the CoRMaT 500
Securing to the Installation Vessels

9. Securing Position above the Mooring

10. Sinking, Connection and Hook-up in less than 20 mins.
Going, Going, Gone !!!

11. Recovery and Decommissioning
- Turbine recovered and secured on tow vessel within 50 minutes
- Site completely decommissioned within the day.

12. Phase 5: Full Scale EMEC Testing- Shallow water mooring system with CoRMaT Technology testing
Novel Gravity Base Framework
A serious of chain baskets provides hold down mass
Ball-grab connection provides mechanical connection/ disconnection
Swivel and slip ring at top of mast provides passive yawing of turbine.
Deployment Q
EMEC Falls of Warness site
Power converter and network connection made on Eday cable landing site and EMEC- SHEPD substation

13. THANKS FOR YOUR ATTENTION