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Interesting presentation.I'm not sure you need to have the flow of water for power generation. You could use the pull on the cable to turn your engine, with the "storage vessel" only being needed to save energy during off-peak times.I like the idea of paired buoys. [diagram=674_1]which would naturally prevent buoy drift. And, would be a much simpler mechanism than what you proposed. The buoy pairs could generate electricity directly, or could be coupled with a third "storage" vessel for off-peak power storage.The biggest issue for paired buoys as above would be to get the correct wavelength. By adding a dynamic couple in the middle, one should be able to dynamically adjust the wavelength.The wavelength will also limit the size of the buoys.
If the youtube animation is to scale then that's a tangle waiting to happen ... [attachment=17153]also see ... https://en.wikipedia.org/wiki/Biofouling
Thinking of watching ocean waves the separation between waves never is quite constant. Nonetheless, the pairs of buoys above should generally prevent drift, and would be reasonably efficient. Fouling, as well as corrosion is a big problem. However, the parts in constant motion (pulleys, spinning) might be kept free somewhat.Another option would be to build an enclosed vessel that was designed to tilt (but not tip over) in the waves. Perhaps recycling some old ships or barge hulls. One could gain stability with a catamaran hull.Choose a length the get the maximum tilting by the wave action without tipping.A gyroscope could be used to provide a central plane from which one would generate energy from the deviation from level.[attachment=17164]The advantage of this is that there would be no critical moving parts that would be exposed to seawater.Of course, one would not have a natural off-peak storage system as above, except, perhaps centrifugal energy storage in the gyroscope.
One thing to keep in mind is that I believe the "near shore" waves are the most regular and intense. In many situations, one might find the optimal location for surface based wave energy generator would be 50 to 100 yards offshore. This would have advantages of easy electrical connections and shallow water, but it would not be an "out of sight, out of mind" type of installation.Does the edge of the continental shelf generate waves, much farther out?
Quote9. To avoid flexible power lines to the seafloor, you could put the generator on the seafloor, perhaps attached to the drums of cable.[This solves the problem of turbine fouling, but makes it harder to repair the generator.]I'm not sure what you mean as the turbine and generator is usually hard linked with a common drive shaft (this is shown in the animation toward the end of the animation if you didn't quite make it that far).
9. To avoid flexible power lines to the seafloor, you could put the generator on the seafloor, perhaps attached to the drums of cable.[This solves the problem of turbine fouling, but makes it harder to repair the generator.]
Storage is already a key element of the system, energy is stored each time the Storage Vessel descends. Once at the desired depth the power generation can be geared to suit the demand. The peak output of such the array shown in the Scaled Animation is equivalent to a conventional power station (albeit for a limited duration).