Abstract
This paper proposed a pulley-buoy accelerated wave energy linear power generation system, and the feasibility and effectiveness of this system were verified through experimental research. Compared with the traditional wave energy power generation system with three-stage energy conversion links, the pulley-buoy accelerated wave energy linear power generation system omits the intermediate energy transfer and conversion link, and realizes the direct gain of electric energy from the buoy movement caused by wave, and by introducing the pulley combination, the movement speed of the buoy is enlarged, the power generation of the linear power generation system is increased, thereby the wave energy conversion efficiency of the system is improved. Under laboratory conditions, a small-size pulley-buoy accelerated wave energy linear power generation system prototype and a swing-plate wave-making system were built to explore the effects of different buoy sizes on the power generation performance of the system. The test results show that within the research scope of this paper, increasing the size of the buoy can effectively increase the wave energy conversion efficiency of the system and improve the power generation performance of the accelerated wave energy power generation system. The research results in this paper provide useful experience for the practical application and efficient operation of wave energy power generation systems.
Highlights
As a sustainable energy source, wave energy has received widespread attention worldwide due to its high energy density, large reserves and wide distribution range [1,2]
With the support of relevant national plans and special funds, wave energy technology has developed rapidly in China, and related equipment has undergone actual testing and operation, mainly including the duck-type and eagle-type wave energy devices developed by the Guangzhou Energy Research Institute, and the buoyant pendulum wave energy device developed by the National Ocean Technology Center, the combined oscillating buoy wave energy device developed by the Ocean University of China, and the raft, pendulum, hydraulic, and pneumatic wave energy power generation devices developed by other colleges and universities[6,7,8,9,10,11]
Aiming at the problem of low wave energy conversion efficiency of traditional direct-drive wave energy power generation systems, this paper proposed a new type of pulley-buoy accelerated wave energy linear power generation system
Summary
As a sustainable energy source, wave energy has received widespread attention worldwide due to its high energy density, large reserves and wide distribution range [1,2]. Eagle-type wave energy power generation device and obtained the optimal buoy shape of the eagle-type device [15]. These optimization studies on the single-buoy structure have effectively improved the energy capture performance of the wave energy power generation system to a certain extent, and improved the wave energy collection efficiency, but the array research of the multi-buoy structure still needs to be further supplemented and strengthened. The oscillating buoy in the system is directly connected to the mover in the linear power generation system, which can directly extract electrical energy from the buoy movement caused by waves, omitting the intermediate energy transfer and conversion link, and the introduction of the pulley combination can amplify the movement rate of the float. By simulating different wave conditions, the effects of different spherical buoy sizes on the power generation performance of the system were experimentally studied
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