Dynamic Analysis Of Wave Energy Generating Systems Based On Duffing Equation

Wave energy with its wide range of distribution, storage capacity and diversification of capture devices, etc., is one of the most potential renewable energy in the world renewable energy In this paper, a nonlinear energy generation device based on nonlinear Duffing equation is combined with the oscillating float type and the vibration energy capure device The non-linear research method is used to analyze the dynamic model of the system. The dynamic characteristics of the system under different parameters are discussed.Firstly, the structure and working principle of the new machine-electric-magnetic coupling wave power generation device are introduced, and the dynamic equation of the system is established. At the same time, the wave energy is studied and analyzed to calculate the wave energy expression.Secondly, the oscillatinug float system in the machine-electric-magnetic coupling system is analyzed. The qualitative analysis mainly includes potential function analysis, restoring force analysis, equilibrium point analysis and Hamilton function analysis, The numerical simulation is carried out by MATLAB programming to study the effect of the oscillating float under different parameters, and the numerical simulation is deduced.Thirdly,the whole machine-electric-magnetic coupling systems are analyzed The relationship between the parameters of the system and the steady-state solution and the unsteady-state solution and the relationship between the parameters and the frequency bandwdth are obtained by solving the nonlinear dynamic equations. The relationship between the parameters and the stcacdu-state solutions and the unsteady-state solutions is obtained. A certain range, the system is in a large cycle of movement, and the band widened, in order to achieve efficient and Ssmooth power generating. In addition, the coupling system is numerically simulated to study the varitation of power generation under different parameters.Finally, the hydraulic system is used as the intennediate conversion device and a kind of mechanical-liquid-electric coupling wave energy generating device is proposed. The structure and working principle of the device are described.Meanwhile,the dynamic modeling of the system is deduced, The dynamic characteristics of the system under different nonlinear parameters and the variation of the output angular velocity are studied by SIMULINK simulation.