Nemos Prototype Completes Trials

Tests on the NEMOS 1:5 scaled prototype running this year July through October in Danish Limfjord have been successfully finished.

All planed features ran. The complex control strategy was implemented, the automatisation of the hole systems as well as all components proved to be reliable.

Particularly noteworthy is the verification of the PTO efficiency of up to 80%.

The positive outcome of this year’s Nature series of experiments seals the implementation of the current concept in the 1:1 prototype in 2016th.

The NEMOS-system consists of an elongated floating body which is connected to the seabed by three ropes. Excited by the movement of the waves, it transmits mechanical energy to a generator positioned protected from sea water at a monopile. Due to innovative trajectories and control algorithms, up to 80 % of the incoming wave energy can be used to drive electric generators.

Conventional systems with vertical movement only achieve efficiencies up to 50 %. With a change in the wave direction the orientation of the body and its trajectory can be adapted by a patented system. For the protection from extreme wave loads in heavy storms, the system can be lowered to calmer water.