| Energy is an indispensable part of human society.With the progress of human society and the vigorous development of science and technology,traditional fossil energy is rapidly consumed.To cope with the energy crisis,the development and utilization of renewable energy are inevitable.As a kind of marine renewable energy with high grade and high energy density,wave energy attracts the attention of more researchers and governments.However,how to improve the power generation efficiency and reduce the cost has become a key issue for the commercialization of wave energy converters.Therefore,it is particularly important to develop and design an efficient wave energy converter.In this paper,according to the new idea of energy device combination and complementarity,a concept device combining a flap-type wave energy converter and monopile wind turbine foundation is proposed,which makes full use of the original support structure and power infrastructure,can greatly reduce the construction cost,and improve the utilization rate of Marine space.In this paper,numerical simulation is used to study the performance of the pendulum wave energy generator based on the offshore single pile fan foundation.Based on the new idea of combining and complementing energy devices,this paper proposes a conceptual device that combines a flap-type wave energy converter.with a monopile wind turbine foundation.It makes full use of the original support structure and powers infrastructure,which can greatly reduce the construction cost and improve the utilization of marine space.In this paper,the numerical simulation method is used to study the performance of this new flap-type wave energy converter based on an offshore monopile wind turbine foundation.The time-domain simulation model of the hydraulic power take-off(PTO)system of the flap-type wave energy converter is established through MATLAB/Simulink.Taking the Yangxisha Pa wind farm project in Yangjiang,Guangdong as the target sea area,the control variable method is used to explore the influence of parameters such as piston area,accumulator volume and generator rated speed in hydraulic system on the power generation performance of pendulum wave energy device.The results show that the optimal piston area and the rated speed of the generator make the average power generation of the device reach the highest level.In addition to the optimization of the flap and hydraulic PTO system,the influence of the arrangement of multiple flaps on the performance of wave energy devices is also analyzed.The results show that there are strong hydrodynamic interactions between multiple flaps,which may improve the power generation efficiency of the wave energy device in a certain range of wave periods. |
