Nowadays the best available wave energy converter technologies are facing a variety of principle design challenges such as: low energy conversion rates, amount of materials needed (mass requirements) to produce significant power are extreme, high cost of delivered electricity, and requirement for very high wave states for effective operation.
Furthermore, the environment provides additional difficulties such as: saltwater (which is very corrosive) and wind and storms which endanger the survival of such technologies.The surface of the world’s oceans is a hostile environment, highly unsuitable for mechanical and electrical equipment. Indeed, under severe weather conditions, the ocean surface becomes even dangerous for ships.
However, today severe storms rarely sink ships because of improvements in weather prediction and in communications. In contrast, wave-energy equipment sitting in a stationary position on the ocean surface typically has no way of avoiding storms. This is in contrast to EWP’s unique wave energy devices, “The Wave Clapper” and the “Power Wing”, which have an automatic control system that takes care of the floats’ rise and submersion process in case of stormy weather conditions.
Also, the ocean floor is a difficult and expensive location for building equipment foundations, particularly if they must resist overturning moments due to high horizontal loads applied at sea level. This is why EWP chose to install its’ energy convertors on existing, stable structures such as (but not limited to) breakwaters, peers and floating and fixed platforms.
Another difficulty of traditional sea wave power convertors is that the pollution of ocean waters by the release of foreign matter is no longer being tolerated. When such pollution happens, it is difficult and expensive to clean up. In contrast, EWP’s “Wave Clapper” and “Power Wing” oil tanks, and hydro pneumatic equipment is located on land, just like a regular power station, which significantly minimizes the risk of oil/hydraulic fluid pollution, as well as the risk of mechanical injuries.
Finally, energy devices can extract significant amounts of electricity when the waves hit the buoy directly, which is usually not the case. As a result, the traditional wave energy techniques do not yield their energy continuously. EWP’s solution to such problem is by applying a buoy regulation mechanism, which automatically directs the buoy to the exact directions of the wave, which in turn maximizes the KWh production.
As a result of the above mentioned difficulties, the traditional wave power companies are challenging with obtaining a continuous power supply, and it seems that the existing technologies (such as: point absorber, overtopping, oscillating water column, and wave attenuator models) do not have the abilities to reach high energy conversion rates and therefore cannot become competitive with burning fossil fuels.
EWP offers an overall solution to such difficulties, which will be described in the following pages.