The world's largest tidal generator set - Oyster

August 04 08:08:25, 2023

The tidal power generation is similar to the principle of ordinary hydropower. Through the reservoir, the seawater is stored in the reservoir during the high tide, and is stored in the form of water energy. The seawater is released during the ebb tide, and the turbine is rotated by the difference between the high and low tide levels. Drive the generator to generate electricity.

The world's largest and most successful tidal power hydroelectric generating unit is called “Oyster” and its core component is a 315kW high efficiency grid-connected converter system from Emerson.

Oyster Marine Generator is located in the waters off the Orkney Islands in northern Scotland. It consists of a huge buoyant steel flap hinged to a base that is fixed to the seabed. As the waves roll over the equipment, the steel flap swings back and forth to drive two hydraulic pistons. The high pressure water in the two pump cylinders is pumped to the shore, and the high-pressure fresh water containing energy is used to drive the impact type with the scoop bucket. The turbine, the turbine and the flywheel are connected to each other to slow down the energy fluctuations and drive a standard induction generator. The electric energy generated by the generator passes through the Emerson converter and is continuously input into the grid.

This tidal power generation device delivers electrical energy to nearby residents. The more intense the tidal motion, the more electricity the generating device produces. It is estimated that there is a maximum of 200 kW of energy per metre of ocean waves. In the long run, the tide can meet 20% of the UK's electricity needs.

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