CoRMaT Tidal Turbine

Proving CoRMaT

Research and development on the CoRMaT programme has followed best practice by methodically progressing through Technology Readiness Levels (TRL's). This discipline ensures that each development goal is met and that issues are systematically resolved before further funding and resources are applied to the next phase of development.

TRL 1:

Initial research into the fluid dynamics of power capture using contra-rotating rotors and proving a conceptual CoRMaT device. Completed with the support of an EPSRC RNeT research grant, (2000 - 2003).

TRL 2:

1/70th scale testing of a prototype CoRMaT device in large test tanks and 1/7th scale prototype device at sea in 2005 - 2007 demonstrated excellent power capture performance of the CoRMaT system (Cp/ λ = 0.42 at 7). Completed with the support of a Scottish Enterprise Proof of Concept Award.

TRL 3:

A 1/7th scale device was tested in the Clyde (2006 - 2007) for device performance structural loadings and materials robustness. This confirmed sustained device performance when scaling up.

TRL's 4 & 5:Proving CoRMaT

Testing of a prototype system in the Sound of Islay (2008) demonstrated: the practicality and functionality of a single riser mooring; device stability and continuous alignment within an energetic tidal flow; and the generating ability of a passively cooled, flooded, permanent magnet, contra rotating generator. This proved robustness of the technology and the engineering science developed for undertaking system design and up-scaling.


TRL's 6 & 7:

Depolyment and testing of full scale mooring assembly at EMEC.This included Nautricity's 'Hydrobuoy' - a hydro-dynamic subsurface float whose lift varies with the tidal flow velocity. (2013)

Deployment of full scale turbine onto the mooring assembly at EMEC and observation of it's performance in wave and tidal environment. (2013)

The CoRMaT device has achieved higher levels of conversion efficiency from fluidic power capture to electrical power delivery; has reduced engineering complexity through elimination of a rigid structural support system, blade pitch control systems, and gearbox; reduced CapEx and OpEx costs; and enables speedy deployment and recovery.

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