Research On Design And Simulation Of Underwater Wireless Power Transfer System

With the fast development of the utilization of the water areas such as the ocean and inland rivers,the traditional power supply mode of the underwater equipment,such as plug-in charging,battery-replacement or cable power transmission and so on,gradually revealed their limitations,such as cumbersome in operation,high cost of the sealing interface and poor reliability of the sealing equipment,limited to the scope of activities and so on.The emergence of wireless power transfer technology provides an important solution to solve these limitations.Wireless power transfer technology does not require cable,within a certain space distance,it can achieve larger-distance,higherpower transmission.The main goal of this paper is to design a practical underwater wireless power transfer system,and make system characteristic research and system simulation verification.The main work of this paper is illustrated as follows:1.Give a brief overview of wireless power transfer technology,specially introduce and analyze the research status of underwater wireless power transfer technology at home and abroad.2.The key technology of underwater wireless power transfer system is modeled,the relative characteristics of the magnetic resonance coupled wireless power transfer technology are analyzed,which provides the theoretical basis for the next step of the design and simulation;Using the GUI tool of MATLAB 2017 b to design system wireless power transfer efficiency and power calculation tools to facilitate system design and test;the overall structure of the system and the structure of each module are designed,at the same time,the design of the main innovations are proposed.3.Design the main circuits of the system,such as inverter circuit,optocouplerdriver circuit,rectifier-filter circuit,monitor and control circuit.The design the inverter circuit are mainly focused on.The circuit adopts double E class inverter circuit topology,the ZVS and ZDS soft switches,simulating by Pspice software,the double E class inverter circuit has higher power output capability and efficiency,which helps to improve the overall performance of the system;at the same time,using the GUI tool of MATLAB 2017 b to design double E class inverter circuit parameter design tool,facilitate the inverter circuit to design and test4.Introduce the types of magnetic coupled mechanism in wireless power transfer technology,analysis their technical characteristics,and choose optional solution for magnetic coupled mechanism.The magnetic coupled mechanism is modeled,and obtain the efficiency expression of magnetic coupled mechanism.The influence factors of magnetic coupled mechanism’s efficiency and capacity are analyzed.Skin effects and proximity effects is simulated by ANSYS Maxwell software.Wind some sets of magnetic coupled mechanism coil,and conduct analysis for them;Finally,study the measures of impedance matching for the magnetic coupled mechanism,to improve the magnetic coupled mechanism transmission efficiency.5.Software simulation and physical experiment study is carried out.Firstly,use the software Multisim 14.0 to simulate and verify the feasibility,frequency splitting characteristics,distance characteristics and load characteristics of the magnetic resonance coupled wireless power transfer technology.Then veifying above characteristics by the real experiments,and physical characteristics of the inverter circuit and the wireless power transfer technology are verified by real experiments.Finally,given the concept of Internet of Vessels,using an Internet of Things platform to build human-machine interface for remote monitoring and controlling,prove the feasibility of the application of Internet of Things technology,which improves the system’s practicality.