The Reaserch On Control Method Of AC&DC Hybrid Microgrid Based On Electric Vehicle Charging Station

With the development of the economy in our country,the problems of the environment attract a lot of attention.Therefore,the government calls for the clean energy such as solar and wind energy.The electric vehicle is been widely concerned as it is good for the environment.With the rapid development of the vehicles,the charging station and the interaction between the Grid draws a lot of attenetion.In this paper,a kind of charging station is put forward.Compared to the traditional charging station,there are many advantages such as the unity power factor,low harmonic of input current,and bi-directional power flow.Then a hybrid of AC&DC microgrid is used to test the charging station whether it is useful in the grid.This paper first discusses the background,significance and the purpose of electric vehical charging station,and introduces the domestic and foreign research present situation,development trend and existing problems of the hybrid AC&DC microgrid.Secondly,in view of the defects that traditional electric vehical charging station method is easy to cause harmonic pollution and reactice power so that the electric system becomes unstable,the paper introduced the theory of PWM rectifier and the control method of realizing the unity power factor,the simulation results show the superiority of the method.Then,this paper introduces the hybrid of AC&DC microgrid including wind power generation system,solar power generation system,energy storage system and so on.And,this paper realize the control method of maximum power point tracking(MPPT)control method of solar and wind power generation system.Finally,the grid connected control and island model control are analyzed according to the Matlab/Simulink software,the simulation results show that the charging station used PWM rectifier can achieve a good availability of new energy and make the microgrid more stable.