Study On Pure Electrical Model And Charging Time Sequence Of Dielectric Elastomer Generator

Dielectric Elastomer(DE)is a kind of special dielectric material,which is usually seen in the field of driving and sensing in traditional applications.Due to its high energy density,flexibility,light weight,large deformation and fast response,it has been used in the field of power generation in recent years,and has attracted more and more attention from scholars at home and abroad.The dielectric elastomer generator made of DE presents a "sandwich" structure,which is composed of dielectric elastomer material and electrodes coated on its upper and lower surfaces,which can be used in a vibrating environment(Such as wind energy,human body movement,wave energy)to collect energy,it has an energy density of up to 1.5J/g compared with conventional electromagnetic generators,and has broad application prospects in the future development and utilization of renewable energy.Therefore,it is very important to create a high visual,simple and efficient electrical simulation model to improve the performance of DEG power generation.The main research contents and conclusions are as follows:Firstly,in this paper,the specific working principle of the dielectric elastomer generator is introduced,and the specific working mode of the self bias circuit is described in detail.At the same time,the current modeling and simulation methods for the dielectric elastomer generator are studied and analyzed,and one of the modeling methods is derived in detail,and the electromechanical coupling simulation model is derived.Finally,the problems and shortcomings of the modeling methods are discussed to summarize.Secondly,the creation of DEG pure electric model.In order to solve the problems and shortcomings in the process of modeling and simulation analysis for DEG,aiming at the problems of high complexity,poor visualization and low matching of simulation experiments in the theoretical modeling of dielectric elastomer generator under self-biasing mode,this paper studies the working mechanism and energy cycle process of dielectric elastomer generator,combines self-biasing circuit,and establishes a model by using Orcad/Pspice software.A pure electrical model for the electromechanical conversion process of a quasi-self-biased dielectric elastomer generator is presented.The relevant system parameters were obtained through the actual dielectric elastomer generator model test,and the export of the electrical model parameters was discussed in detail.The newly established pure electric model was simulated by Orcad/Pspice software.Through the construction of the corresponding experimental platform,the experimental research was carried out and compared with the simulation results.The simulation and experimental results show that the newly established pure electrical model can easily study the electromechanical conversion effect of dielectric elastomer generators under different mechanical frequencies and voltage gains,and the matching results with the experimental results are high and the error is small.The pure electrical model has a simple structure,good visualization,and is easily compatible with the drive circuit.Thirdly,study the power generation performance of DEG under different charging time sequence.Based on the pure electrical model of DEG,in order to study the power generation performance of dielectric elastomer generator(DEG)in different charging time sequence modes,further increase the capacity of power generation,the working mechanism and energy cycle of DEG was studied,the pure electric model which can simulate the DEG electromechanical conversion process was established by Orcad/Pspice software,and the working principle of the self-biasing circuit was analyzed in detail.The Orcad/Pspice software was used to simulate the power generation performance of DEG in four different charging time sequence modes,by building the corresponding experimental platform,and experimental research was carried out and compared with the simulation results.The simulation and experimental results show that the DEG power generation performance is different under different charging time sequence modes,The DEG works best in mode 1 and mode 2,power generation performance of the mode 3 is the second,and power generation performance of the mode 4 is the worst.This paper compares the effects of different charging time sequence modes of DEG on power generation performance,and provides a new idea for further improving the efficiency of DEG power generation.