Experimental Testing And Simulation For Wave Energy Harvesting Rafts In South China Sea Islands

The development of islands and reefs in South China Sea is the strategic focus of our country,which has a huge demand of electricity.Due to the prominent problems for islands and reefs such as single power generation approach,difficult energy supply and so on,a cheap,safe,reliable and easily maintained clean energy recovery system is highly required.Focusing on energy requirement for islands and reefs in South China Sea,this paper analyzes the energy source of South China Sea,selects WEHR(Wave Energy Harvesting Rafts)as the research structure,establishes a mathematical model based on the analysis result of multi cylinder WEHR theory,carries out the optimum model selection for components and puts forward the optimum value of the stroke and bore ratio of hydraulic cylinder.Moreover,the trial construction of prototype of raft wave energy device with wave characteristics of islands and reefs in South China Sea has been achieved as well:(1)It summarizes the current research status of energy source of islands and reefs in South China Sea by focusing on the problem of single energy of islands,and discusses the structural model of WEH(Wave Energy Harvesting)and modeling simulation analysis.What's more,it also puts forward to use WEHR power generation as a method to supplement energy in the South China Sea.(2)For the problem of insufficient theoretic research of WEHR,it establishes WEHR hydraulic principle,carries out structural design according to the response analysis,and makes derivation and calculation for the expression of torque and power generation capability during the piston movement,accumulator steady flow process and generator working process under ideal wave excitation condition.(3)Based on theoretical derivation result of multi-cylinder WEHR,it not only establishes a mathematical model for multi-cylinder WEHR device through MATLAB software,optimizes the model selection for parameters of prototype by combining practical wave condition of the South China Sea,but also carries out trial construction and experimental verification of principle prototype on the basis of model selection result.