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A submarine power cable is a transmission cable for carrying electric power below the surface of the water. [1] These are called "submarine" because they usually carry electric power beneath salt water (arms of the ocean, seas, straits, etc.) but it is also possible to use submarine power cables beneath fresh water (large lakes and rivers).
BlueROV2 with electric thrusters. Electric thrusters are mainly used on battery operated underwater robots such as AUVs, submarines, and electric ROVs. Electric thrusters usually use brushless DC or permanent magnet synchronous motors (PMSM). These motors may be sealed within air- or oil-filled cavities, or use a flooded design that allows ...
[5] [6] The letter of intention for underwater sea cable was signed between Eesti Energia, Pohjolan Voima, Helsingin Energia and Latvenergo on 31 March 2003. [7] In May 2004, the Lithuanian power company Lietuvos Energija agreed to participate in the project, shortly after which the project company AS Nordic Energy Link was established.
Marine currents can carry large amounts of water, largely driven by the tides, which are a consequence of the gravitational effects of the planetary motion of the Earth, the Moon and the Sun. Augmented flow velocities can be found where the underwater topography in straits between islands and the mainland or in shallows around headlands plays a major role in enhancing the flow velocities ...
Electro-hydraulic actuators (EHAs), replace hydraulic systems with self-contained actuators operated solely by electrical power. EHAs eliminate the need for separate hydraulic pumps and tubing, because they include their own pump, [ 1 ] simplifying system architectures and improving safety and reliability.
A linear actuator is an actuator that creates linear motion (i.e., in a straight line), in contrast to the circular motion of a conventional electric motor. Linear actuators are used in machine tools and industrial machinery, in computer peripherals such as disk drives and printers, in valves and dampers , and in many other places where linear ...