Trident Energy and Exceedence share in £500,000 Scottish wave energy converter cash

Wave power general2 HWUThe Wave Energy Scotland quango has made two final awards from its first competitive call for power take-off systems.

The first hand-out of £475,000 is to Trident Energy while another £90,000 will be made to Exceedence.

Trident’s WaveDrive project aims to design and develop low cost, reliable and controllable linear generator power take-off technology for wave energy converters, combining detailed engineering design work with an advanced “wave to wire” model which allows simulation of PTO performance across the full range of wave conditions and for a wide range of converters devices.

Extensive development work is proposed to progress the technology for on-wave testing at scale.

Other partners involved in WaveDrive include West Coast Wave Initiative, Energy Technology Centre, and Sgurr Energy

The Exceedence project is to develop and test a hydraulic PTO concept consisting of a flexible compliant polymer spring tube.

This polymer spring (or gator) can be designed with a wide range of non-linear response curves allowing tailoring of the stress strain response.

The seawater-compatible gator acts as a pump, compressing internal fluid (such as sea-water) and driving a hydraulic PTO system. As it does not require any seals, it is designed for tens of million compression cycles and can be implemented in a system with very low maintenance requirements.

Other partners includeTechnology from Ideas (TfI) Strathclyde University and University College, Cork.

Wave Energy Scotland was launched to keep afloat the economic dream of volume exports of home-built Scottish surface wave-power electricity generating machines following the sinking of the Pelamis project.

The world’s largest sub-surface tidal-power turbine array is being built with (mostly) private-finance in the Pentland Firth by Atlantis Resources.

Meanwhile, London consultancy Arup has been commissioned by Wave Energy Scotland to examine how wave developers can make the structural design of their devices more robust – a project-critical design problem.

A quango spokesman explained: “These studies will assist us to understand where gaps exist in our understanding that will require future research or development in order to drive the development of wave device.

“We have no doubt that there are reliable technologies used elsewhere in other industrial sectors which can be employed in developing wave energy technology.”


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