Research On Control Strategy And Main Circuit Of Multi-LAN-Port Energy Router

With the fossil fuel increasingly exhausting and environmental pollution becoming serious around the world,the exploitation of new energy,like wind energy and solar energy etc.is attracting human’s attention.But the traditional grid can’t receive a mount of new energy’s power supply,and the Energy Internet is prompted.Applying with the advanced power electronics technology,the Energy Internet can contain a large of distributed generation and distribution storage,and intelligently manage the energy flow via the information technology.The energy router is the crucial equipment and technique of the Energy Internet,it can make voltage level conversion,electrical isolation and power quality optimization etc.and provide the standard plug-in port accessing with distributed generation and load.Thus this essay researches on the main circuit topology and control strategy of the energy router in the Energy Internet.This essay proposed the main circuit topology of multi-LAN-port energy router which can access with distributed generation,distributed storage and AC/DC load based on the topology of the existing energy router.This topology contains several DC ports and AC ports which can access with a several of generation equipment and load,and broadens the application scope,improves the coefficient of utilization,offers a better condition for distributed generation connecting with the grid.Firstly,this essay makes a detailed introduction to the main circuit topology and the basic principal of the multi-LAN-port energy router,analyses the switching characteristics of between the supply mode with the feedback mode and between the optimist switching mode with the period switching mode,builds the switched system model combing with the gate on-off state and switching rules of the power electronics within the multi-LAN-port energy router.Then,according to the switched system model of the multi-LAN-port energy router,designs the two-level switching control strategy based on the switched system theory.After that,designs the multi-LAN-port energy router experiment platform with the main circuit topology and the control strategy.At last,builds the simulation model on the MATLAB/Simulink platform,the simulation result validates the feasibility and practicability of the proposed multi-LAN-port energy router main circuit topology and control strategy.The main circuit topology of the multi-LAN-port energy port this essay research on contains three modular:LAN-port,WAN-port,link layer,it can access with distributed generation and distributed storage,also with AC load and DC load,this makes it flexible and reliable.The control strategy based on the switched system model precisely describes the multi working mode and gate on-off state of the multi-LAN-port energy router,explicitly reflects the switching characteristics and the switching rules of the multi-LAN-port energy router.