Research On Optimization Of Energy Harvesting Efficiency Of New Wave Energy Power Generation Device

The new energy industry is significant for optimized energy structures.The ocean can be further developed,and the wave energy power technology has been constrained by high cost and low efficiency,the binding of linear motors and breakwater is close to blank.Therefore,this paper is based on the wave energy generating device,which is designed with a new type of wavy energy generating device that combines a linear motor and the breakwater for its low-efficiency and high cost.For a specific wavy condition,conducting math modeling,feasibility analysis,parameter design and optimization,system simulation and power control optimizing.The specific research content is as follows:First,start from the linear small amplitude wavy theory,by analyzing the current hydrodynamic characteristics to determine the scope of the wave height,then introducing the basic mathematical model of the traditional wave energy power generation device.Secondly,the conception process and design basis of the new wave energy power generation device are explained,and design a new type of power generation device based on the advantages of various devices,feasibility analysis is carried out in theory and experiment,after determining the research scope of the cycle,mathematically model the device,focus on analysis of its motion characteristics and power generation performance and compare it with the traditional wave power generation model.Then design the key parameters of the device,including the material,size and deflection angle of the baffle,the inherent elastic coefficient of the device,board spacing,etc.Then carry on mathematical modeling and parameter matching design to the permanent magnet linear motor,use Matlab software to do numerical simulation analysis of the system and use Simulink module to build a simulation model of the system.Numerical simulation analysis results show that changing the deflection angle and inherent elastic coefficient of the device has a significant impact on the amplitude and phase of the baffle movement and the power generation performance of the system,the best deflection angle for power generation of the target sea area device is 10.84 degrees,and the best elastic coefficient is1974N/m,different wave frequencies correspond to different optimal elastic coefficients,and the time-varying elastic coefficient following the wave frequency can optimize the power generation performance of the system.Finally,the sliding mode control strategy is used to control the power of the device when the wave cycle rules change.The simulation results show that the control method can optimize the wave energy capture efficiency of the device,and the control effect is better when the wave period is smaller.Then,a small-period random wave was fitted by the sine function,and the simulation was performed again under the wave parameters to verify the above conclusions.The new wave energy power generation device uses a linear motor combined with a breakwater to utilize the lateral wave energy,the structure is novel and the construction cost can be reduced.The angle and elastic coefficient of the baffle can be selected according to the sea conditions,so that the system is close to the resonance frequency while improving the stability.Through the sliding mode control strategy,the control effect under different wave cycles is compared,which further improves the power generation performance of the system and realizes the optimization of the energy capture efficiency of the device.