The Inertial Seawave Energy Generator Rocks

wave generatorLloyd Alter/CC BY 2.0

This doesn't look like much, but it is the ISWEC, the Inertial Seawave Energy Generator, developed by Wave for Energy, a spin-off of the Politecnico di Torino in Italy. It is a very clever electrical generator that converts the rocking motion caused by waves into rotary motion that can generate electricity.

IwecISWEC/Promo image

Most wave generators, like the Pelamis, have articulated joints that move with the waves, but can be hard to seal against seawater, and can leak lubricating oils.

Iswec© Promo Image

The ISWEC does not; it uses the principle of the gyroscope, which when spinning resists change in direction. The wave motion induces a roll in the gyroscope, which is connected to a generator. The action is completely internal to the hull of the wave generator, and is remarkable to watch; as the hull rocks, the spinning gyroscope rolls around like the spacecraft in the science fiction movie Contact.

In this incredibly cheesy early video (they had a better one at the Fluidtrans show in Milan) you can see a 1/45 scale model in action. They are now preparing to test the 1/8 scale model in the Mediterranean Sea. More at Wave for energy

Tags: Electricity | Energy | Italy


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