Research On A Small-scale Off-grid Wave Power Generation System With Inverted Pendulum

In the past century,with the massive exploitation of fossil fuels,coal and oil,the problem of traditional energy shortage is becoming more and more prominent,The burning of coal and oil will also produce a large number of harmful gases,seriously endangering the ecological environment,to find alternative renewable energy has become an important issue to be resolved in various countries.In the field of new energy,wave energy is a non-polluting and very energy-rich energy source.Power supply to remote islands and offshore facilities has always been a difficult issue to solve,due to its long distance from land,it is of great significance to establish an independent power system that can generate electricity by ocean waves and help solve the problem of island residents' electricity consumption.In the wave power generation system,wave energy conversion device and electric energy conversion device are the focuses of research,The paper first introduces the current types of wave power generation,and emphatically introduces the research status of pendulum wave power generation device,The advantages and disadvantages of the pendulum wave power generator are analyzed,and the problems in the research of the pendulum wave power generator at the present stage are summarized.Based on the above analysis,a small-scale Off-grid Wave Power Generation System with inverted pendulum,hydraulic system and electrical system is proposed.In this paper,the composition and working principle of the power generation system are introduced,and the principle analysis and design of the hydraulic system in the mechanical system are also carried out.In the meantime,the principle analysis and design of the electrical energy conversion device composed of three-phase rectifier bridge circuit,Buck-Boost converter circuit and battery management system(BMS)are carried out.The linear model,the generator model and the transmission model of the inverted pendulum wave energy converter are respectively established,and the control methods are determined by modeling the Buck-Boost converter circuit.Then,the inverted pendulum wave energy converter,generator set,control system of Buck-Boost converter and total wave energy generation system are simulated by Matlab software.Finally,based on the simulation,the thesis builds an experimental platform to test the generator,hydraulic system,electrical system and total wave power generation system respectively.The experimental results are analyzed and the feasibility of the whole wave power generation system is verified.