Technology

The TidalStream Triton platform enables highly cost effective deployment and operation for horizontal axis tidal turbines. The platform is adaptable and a number of alternative turbines can be used; the Triton platform providing the installation and maintenance base that will reduce costs and provide safe operating conditions.

Benefits

The Triton platform improves the cost effectiveness of single tidal turbines by:

creating a multi-MW system with a single seabed shear anchorage - up to 10MW
enabling float-out installation and removal without barges, cranes, jack-ups or divers
providing a stable platform for safe and simple topside access to machinery and rotors
maximising energy capture by using the full depth of the tidal stream (currents near the surface generally run significantly faster than those near the seabed)
maximising energy and reducing loads by allowing the turbines to align with the flow

Turbines

The Triton platform system will incorporate turbines supplied by other manufacturers. The versatility of the platform approach enables the adoption of units ranging from open or shrouded rotors to geared or direct drive transmissions

The Triton 3 three rotor platform for 35-55m depth

The Triton 6 six rotor platform for 60-90m depth

Triton 6 ballasting system

Gravity base

Pinned frame

Single pile

Seabed Anchorage

The connection to the seabed is vital to withstand several hundred tonnes of sideways thrust from the turbines when generating, as well as hydrodynamic structural loading from storms and tidal flows.

Unlike with most other tidal turbine systems, there are no large overturning moments at the seabed with the Triton, only shear, so the required anchorage will be smaller a, lighter, and cheaper to install. Depending on the water depth, currents, and seabed condition, a number of options are possible and are illustrated below: