Posts Tagged ‘Wave generator’

Wave energy generator pumps power to Scotland

November 24th, 2009 admin 1 comment

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Wave energy got a boost with the connection of the Oyster hydro-electric device to the electricity grid in Scotland last Friday.

Aquamarine Power activated the connection of the Oyster in the waters off Orkney, marking one of the few ocean power devices to be producing electricity.

The device is a hydraulic pump operated by a “hinged flap,” where a large metal piece moves back and forth from the motion of the waves. The movement moves a hydraulic piston that pumps water underground to a hydro-electric turbine that drives a generator to make electricity.

The peak power output of the Oyster 1 is about two megawatts, depending on the location. The company, which received research funding from the U.K. government, is now working on a second-generation device.

There are a number of technologies being pursued to convert wave or tidal energy into electrical energy, including underwater generators. The advantage of the pump design is that it’s relatively simple and many components, such as gear boxes and generators, are not exposed to the water.

Twenty Oysters, which are attached to the seabed at about 10 meters of water, could produce enough electricity to power 9,000 homes in the U. online casino .K., according to Aquamarine Power.

In the U.S., the Seadog Pump uses a similar approach of pumping water offshore to a hydro-electric turbine to make electricity.

The Oyster was tested at the European Marine Energy Centre. In the U.S., there is an effort to establish an ocean power research center in southern Massachusetts.

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Wave generator capsizes

September 23rd, 2009 Grace No comments

Trident Energy’s plans to create power from sea waves suffered a setback after an 80-tonne floating generator capsized off the coast of Suffolk.

Trident Energy’s experimental device was being towed out to sea to begin a year-long offshore trial when the accident happened on Monday, 21 September near Southwold, Suffolk, eastern England.

The technology was being tested in the sea to gather detailed information on how the machine performed.

The generator was to have been placed 8km off Southwold for the year-long evaluation that may lead to new wave farms being developed that are capable of powering 60,000 homes.

Coastguards alerted local shipping as the 18-metre-tall machine drifted with the tide until tugs could secure lines and take it to nearby Dunwich Bay.

Trident Energy confirms that the generator has been grounded and made secure, about 5km east of Southwold harbour.

A spokeswoman for Trident Energy said that the company is in the process of making arrangements to move the platform to a suitable location where any damage can be fully assessed before determining next steps.

The spokeswoman added: “Trident Energy can confirm that the incident was in no way related to its patented technology to convert sea wave energy into electricity.”

The technology, developed by Trident, is designed to stand on giant legs that sit on floating pontoons anchored to the seabed. IP addresses assist us in many Web operations, like running the statistical software that identifies the sections of our that are most heavily used, and which portion of our audience comes from within the NYU network.. This enables special floats between the legs to move up and down with the waves and drive a turbine, which generates electricity.

It is not known at this stage whether the machine was badly damaged.