Marine

摘要

For the UK, with its extensive and often turbulent coastline, wave and tidal power is frequently hailed as the one truly reliable and predictable source of renewable energy. The preceding decades have seen a number of novel concepts for wave power devices, the simplest of which are linear generators that essentially comprise a floating buoy system that undulates with the sea swells. An electric coil inside the buoy surrounds a magnetic shaft which is anchored to the sea floor. When waves cause the coil to move up and down relative to the fixed magnetic shaft, voltage is induced and electricity is generated.