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Technology

WEPTOS WEC (wave energy converter) employs a well‐known and effective method in order to extract wave energy in a completely new and innovative manner. Through its floating angular construction, the wave energy converter is able to regulate the wave energy input and reduce the impact during rough weather conditions. The V‐shaped structure absorbs the wave energy through a line of rotors, which each of them transmits the energy to a common axle, directly attached to a generator. This way, an even energy generation throughout the wave duration follows, enabling for other known generator solutions to be applied.

Based on acknowledged technology

The rotor’s shape draws upon the reputable Salters Duck geometry, whose ability to achieve high levels of energy conversion efficiency became the subject of great attention when it was first developed in 1974. Its creator Stephen Salter had focused on hydraulic energy conversion, placing each rotor parallel with the waves.

The WEPTOS technology differentiates itself by applying mechanical energy extraction and in single rotor movement direction only. Since this takes place in an angle to the wave evolution, and the numerous aligned rotors are relatively short, an enduring rotation of their joint axle is ensured.

When a wave hits an individual rotor, the mechanics of the joint axle causes it to rotate. After a wave has passed the individual rotor, the center of gravity makes the rotor swing back towards the starting point.

This motion creates a ratchet effect in the mechanics and prevents from any hindering forces in the axle to set in. The efficacy is notably high and the system works without additional steering mechanisms.

Adaptive to wave conditions

The WEPTOS WEC structure angle is what determines its exposure to the waves. During calm water conditions, waves are small and have little energy, which calls for energy extraction over a wide reach, and the wider the better. During rough water conditions on the other hand, a more concentrated width is beneficial in order to ensure optimal levels of energy extraction and prevent these from surpassing the generator’s capacity. The WEPTOS technology automatically adapts the structure angle to changing wave conditions and thereby guarantees an optimal use of the generator.
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Stormy weather makes overcharging prevention critical, but because of its small angle, the WEPTOS WEC structure calls for no additional endurance requirements to those under normal conditions.

WEPTOS WEC has a simple and enduring triangular structure, connected through a flexible part in the bow. The angle gets adjusted as the beam (the connector between the two parts) moves back and forth. The structure is anchored by the beam and therefore it always positions itself correctly in the waves’ direction.