Study On The Characteristics Of Triboelectric-Electromagnetic Composite Wave Energy Device Based On BUOY-41

The monitoring of marine information is an important part of modern life data,and the self-powered system of the marine monitoring platform has become an important guarantee for its long-term stable work,traditional wave energy devices are not suitable for power supply to marine monitoring platforms due to their size and structure.Therefore,this paper will miniaturize the wave energy devices and plan to install them in the BUOY-41 marine buoy to complete its self-powered design.The effects of various parameter configurations of the composite wave energy device on the output characteristics are discussed.This article first introduces the overall structural design scheme of the triboelectric-electromagnetic composite wave energy device,analyzes the working principle of the triboelectric power generation unit and the electromagnetic power generation unit,determines the influencing factors on the output characteristics of the two,and quoted the basic CFD theory based on the STAR-CCM+ platform.The output characteristics of the triboelectric power generation unit are mainly affected by six variables,namely,the full length of the actuator,the radius,the index of the fork-finger electrode,the width ratio of the fork-finger electrode,the surface charge density and the external resistance.Firstly,a two-dimensional axisymmetric model was established based on the electrostatic field module of the COMSOL platform and the accuracy was verified by referring to the references.Then according to these variables respectively model simulation contrast test,got under the specified sinusoidal motions in the above parameter as a variable output characteristics of the unit,by comparing the power density determines the size of the regular pattern of influence on the output characteristics of the unit,but also completed a wave energy device parameters optimization design,get the optimal parameter configuration.Perform a simple electromagnetic power generation unit experiment based on the above optimal parameter configuration,and establish an experimental simulation model based on the magnetic field module of the COMSOL platform,and determine the accuracy of the simulation model through comparison and analysis;based on the accurate optimal parameter configuration information,the establishment is accurate and reliable The electromagnetic power generation unit simulation model is used to obtain the output characteristics of the electromagnetic power generation unit under the specified sinusoidal motion state.With the help of the STAR-CCM+ platform,the BUOY-41 ocean buoy model and the numerical tank model are established,and the hydrodynamic analysis of the ocean buoy is performed to solve the influence of the wave height and wave period on the buoy’s motion response;through a simplified simulation experiment program The motion response of the buoy is equivalent to the relative motion between the mover and the stator in the wave energy device,the movement displacement data of the buoy is obtained,and the influence of the wave height and wave period on the output characteristics of the wave energy device under the optimal parameter configuration is determined;Finally,the output capacity of the wave energy device under the optimal wave conditions is calculated.The study on the triboelectric-electromagnetic composite wave energy device in this paper improves the efficiency of the wave energy device,provides a reliable solution for solving the long-term self-supply problem of BUOY-41 marine buoy,and also provides a basis and reference for solving the self-supply problem of other marine working platforms.