The WaveEL system is comprised of an 8 meter long acceleration tube, open at both ends, which goes right through the buoy and is sticking down 30-35 meters below it. As waves rise and lower the buoy with the attached tube, they will move differently from the water column in the tube. By placing a piston connected to a hydraulic conversion system in the tube, a pump is created. The hydraulic pump is connected to an accumulator feeding a hydraulic motor with a generator that converts the hydraulic pressure to electric power. The mooring system allows the buoy to move freely in the vertical plane, whilst still holding station. A dynamic cable connects the WaveEL buoy to the collection hub and then a seabed cable connects the hub to shore.
The design is different in that it does not invent and use unproven new components but instead depends on well tested components from reputable suppliers such as Siemens, Parker, Jotun and NKT cables, to name but a few.
The aims of this deployment are to demonstrate survivability, energy production and to give potential customers an opportunity to evaluate the system performance in a challenging wave climate.
Check out the video below showing how the buoy operates.