![]() However, the official website of GITERM at UPM did not mention the power generation efficiency and data of construction cost.Īmable López, a researcher inn UPM, expressed that GESMEY system has earned a patent for the college. The size of second generation turbine is smaller and better fitting the deep sea. The rotors are connected with submarine cables and anchoring systems on the sea bed. The second generation turbine is consisted of multiple rotors. ![]() Its cost of installation on sea bed is higher than the second. The size of first generation's tidal turbine is larger than the second. These tidal turbines look like electric fans on the sea bed. The angle of turbine can turn 180 degrees. Their yaw systems can change directions according to the movement of tides. There are three blades and one pitch system in most of the first generation tidal energy system. The shape of first generation tidal turbine is similar to that of a wind turbine. Let's compare the first generation tidal turbine with that of the second generation. (Photo caption: The tidal turbine that is used in Scotland by Altantis, a tidal turbine manufacturer.) In order to reduce cost of energy generation by about 30%, the second generation's tidal energy turbine actually uses multiple and smaller rotors. Its advantage is the much smaller size of turbine rotor while the first generation turbine rotor was as huge as that of onshore wind turbine rotor. The new tidal device of UPM (a second generation tidal system) is called GESMEY. In this way, the system will not be carried away by ocean current. The second generation tidal power system can save costs because of newly designed anchoring systems and cables that can fix the entire system to the seabed. The reasons why second generation tidal energy system is necessary is because first generation tidal power system costs a lot in construction on the sea bed. The rest of European countries and Canada are preparing to install tidal power stations.Īccording to statistics, 80% of tidal energy takes place in 40 meter deep beneath the sea level. Its highest record of power generation reached 700 MWh. In particular, Scotland in UK installed the largest tidal power plant in the world in September 2017. Scientists believe that tidal energy is likely to be the next star of maritime renewable energy. Tidal energy is generated because the ocean water rises and falls between days and nights. In order to overcome these issues, members of the Technological Research Group in Marine Renewable Energy (GITERM) at UPM developed new methods and procedures to evaluate the cost of a generator during its life span, and the team used feasibility analysis and simulation system to design simpler and more stable anchoring system, so that tidal power stations do not drift in the deep ocean. Typically, there are the following technical difficulties of new equipment: manufacture, installation and high maintenance fee. It can reduce a 30% share of total cost for a tidal power plant. Recently, Technical University of Madrid (its Spanish name: Universidad Politécnica de Madrid, UPM) developed a new generation tidal turbine generator and anchoring system. However, the first obstacle is to overcome cost issue and seawater erosion issue. The electricity then travels through wires to a city where people need it.Tidal energy is a potential renewable energy option for offshore and coastal countries. The spinning turbine is connected to another device that produces electricity. Tidal generators (or turbines) work like wind turbines, except it is ocean currents, not wind, that turns them. We can use tidal energy in some places instead of burning coal and oil that contribute to global warming. And we can! We can use tidal energy to supply electricity to our homes and businesses. With all that water moving up and down, we ought to be able to capture some of that tidal energy. Usually, there are two high tides and two low tides each day. ![]() So as Earth turns, the ocean surface seems to rise and fall. ![]() The part of the ocean on exactly the opposite side of Earth bulges out too. The part of the ocean facing the Moon bulges out. The energy for Earth’s tides comes mostly from the Moon’s gravity and a little from the Sun’s gravity. Find out why.Īnother form of energy in the ocean is tidal energy. The oceans bulge on the other side as well. The Moon's gravitational pull on the side of Earth nearest the Moon pulls the oceans toward the Moon.
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