PELAMIS WAVE ENERGY CONVERTER

PELAMIS WAVE ENERGYCONVERTER BY

P.L.MANIKANTA REDDY12075A0318INTRODUCTIONThe Pelamis Wave Energy Converter is a technology that uses the motion of ocean surface waves to create electricity.This device is known as a POINT ABSORBER' and can effectively focus energy from a wide area by interacting with an area of waves.

PRINCIPLEThe waves being created by the progressive transfer of energy from the wind as it blows over the surface of the water. The cylindrical structure of the converter joints is moved due to the action of waves of the sea and thereby creates energy. CONSTRUCTIONThe Pelamis Wave Energy Converter is a semi-submerged device, composed of cylindrical sections linked by hinged joints. Each of the machine is 150m long and 3.5m in diameters and weigh about 700 tonnes of carbon steel.A single device is composed of four articulated sections joined by three power modules.

OPERATIONThe wave-induced motion of these joints is resisted by hydraulic rams. As waves moves the joints up and down and side to side, hydraulic ram moves according to it which pumps high pressure oil to the hydraulic motor.The hydraulic motors drive electrical generators to produce electricity.The generated electricity is transmitted through power sea cable.

Working model

Electric generatorGas under pressureHPValve 1Hydraulic motor

Hydraulic arm 1

Hydraulic arm 2

Fluid under pressureReservoirLPforceforceValve 2High pressureLow pressure

Hydraulic arms

HYDRAULIC CIRCUIT

SUBSEA POWER CABLESPower from all the joints is fed down a single umbilical cable to a junction on the seabed. Several devices can be connected together and linked to shore through a single seabed cable.

www.freepptpresentation.comPROPOSAL FOR INDIAThe country that presently use the pelamis are Portugal, Ireland, France, Spain.Estimated amount of pelamis is about 2.25MW which currently meet the annual demand of 1500 family.In India the current demand is more now a days so if we propose this pelamis in INDIA the current demand can be easily reduced.ADVANTAGESNo maintenance carried out at offshore site 100% available technology Nooffshore intervention required 'Hands Free' operation Lowest kWh costs in the market High return potentialCONCLUSIONCurrently there are few wave power generating farms, although there is much talk about its potential as a major source of power in the future. However, as the technology becomes cheaper, more wave farms will begin to emerge.

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