Optimization And Improvements Of A Floating Wave Power Platform

The research object of this paper is a floating wave power platform,which has a successful sea trial in Xiaodeng Island sea area of Xiamen.The main task is to optimize the energy transfer system.That is designing a double stroke full cycle hydraulic transmission system to replace the former mechanical transmission system in this WEC(Wave Energy Converter).The main contents include the following aspects:Firstly,several float type WECs and their optimizations are briefly introduced.The working principle,characteristics of this WEC and the reason why transform the mechanical transmission system to a hydraulic transmission system are also described.Secondly,through the Stokes wave theory and AQWA software simulation on the float type wave power Platform simulation,some hydrodynamic parameters of one buoy are gotten,like displacement,stress and velocity.Base on these,one buoy's wave energy extraction efficiency under different sea conditions,one buoy's power under certain sea condition,and the velocity of buoy arm output end are calculated,which provide the basis for the subsequent simulation of hydraulic system.Thirdly,some specific design requirements and solutions of this wave power platform's hydraulic transmission system are put forward.And on the basis of these,a double stroke full cycle hydraulic transmission system is designed.According to the simulation results of AQWA software,a 5kW's motor and the hydraulic components which match the rate power are selected.At last,the numerical simulation of the hydraulic circuit is carried out using AMESim software to test the feasibility of hydraulic transmission system.And the dynamic characteristic parameters of system pressure,flow rate and motor torque and rotational speed are analyzed by changing relevant parameters.The simulation results show that the pressure and flow fluctuation of this hydraulic system are well absorbed by a accumulator,the power of the generator meet the design requirements and the hydraulic transmission system is well matched with this floating wave power platform.