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Wave power is the capture of energy of wind waves to do useful work – for example, electricity generation, desalination, or pumping water. A machine that exploits wave power is a wave energy converter (WEC). Waves are generated primarily by wind passing over the sea's surface and also by tidal forces, temperature variations, and other factors.
The wave impact induces rotation of gyroscopes located inside a pear-shaped "duck", and an electrical generator converts this rotation into electricity with an overall efficiency of up to 90%. The Salter's duck was invented by Stephen Salter in response to the oil shortage in the 1970s and was one of the earliest generator designs proposed to ...
In 2010, Pelamis Wave Power began tests of the first Pelamis P2 machine, again at the EMEC Billia Croo wave test site. The machine was owned by the German utility company, E.ON, and was the UK's first commercial supply contract in the marine energy sector. [10] The P2-001 machine was named Vágr Atferð, Old Norse for Wave Power. [11]
SINN Power wave energy converter (single module) on Crete in August 2016. German company SINN Power GmbH developed a wave energy converter from 2014, however the company is now focused on solar power. [89] The SINN Power WEC consists of a variable number of buoys which are attached to an inflexible steel frame.
From 2009 to 2011, Ocean Power Technologies ocean-tested its wave power generation system at the US Marine Corps Base Hawaii (MCBH) at Kaneohe Bay.The Oahu system was launched under the Company's program with the US Navy for ocean testing and demonstration of such systems, including connection to the Oahu grid.
Wave motors were machines designed and built in the late 19th and early 20th century to harness the power of wave or tidal energy. Many experiments were planned or built in California employing various methods.
An OE Buoy or Ocean Energy Buoy is a floating wave power device that uses an Oscillating Water Column design. It is being developed by Irish company Ocean Energy Ltd., based in Cork, in collaboration with the Hydraulics and Maritime Research Centre at University College Cork, Queen's University Belfast, and Marine Institute Ireland.
This has a power of around 200 kW, enough to supply either electricity for around 140 households or to supply desalinated water for around 900 households (150,000 m 3 per year). [ 2 ] The first energy collector was installed on 8 February, [ 9 ] and the full system was installed by June. [ 10 ]