Research On Optical Storage Control System Based On Hybrid Energy Storage

Under the influence of natural environment and energy problems,new energy generation technology has been widely used in practical applications.However,for wind energy,solar energy and other new energy will be affected by climate conditions,there are uncontrollable factors,and this particularity greatly limits the promotion of photovoltaic power generation.Based on the existence of this problem,energy storage technology has entered the field of vision of scientists,and has gradually received more and more attention.Scholars have also invested a lot of resources and energy in the research and analysis of energy storage technology.Energy type and power type are two major categories of energy storage technology,and their characteristics are different.Therefore,the application effect of a single type of energy storage is often not too good,and in order to give full play to its working performance,scholars put forward the concept of mixed energy storage device.As the name implies,mixed energy storage technology combines two types of energy storage technology,so that the energy storage system in the optical-storage system has the advantages of two energy storage technologies,and can give full play to the technical complementarity between the two in the working process.In order to get better results.The main research content of this paper is to model the super capacitor and battery in the optical storage system,to establish the life model and the economic analysis model of the two,and to design the control scheme of the energy storage system.And optimize its operation control parameters and so on.Firstly,the whole frame of optical storage system is given,and the basic principle of the system is analyzed.Secondly,the mathematical model of photovoltaic cell is built.In order to understand its output characteristics,the main circuit parameters and control algorithm of photovoltaic power generation module are designed.The reliability of the design is proved by the simulation results.Finally,the battery model and the super capacitor model are established,and the charge and discharge characteristics of the two energy storage components are studied by simulation analysis.Aiming at the hybrid energy storage system,a control strategy with the idea of coordination and overall performance is proposed.Based on the traditional control scheme,the whole coordination control,overcharge and over-discharge protection and maximum power limit protection are added to the of power distribution by using filter.The energy density of the power type energy storage element is low,and the instantaneous reaction can be made according to the state of nuclear power and the working demand,so that the overall adjustment ability is improved,and the coordination is considered in the protection and limitation.Better play different types of energy storage components technical complementarity.The LCLC resonant bidirectional DC/DC converter is proposed and its principle and working mode are studied.The small signal modeling and controller design are carried out.Finally,the simulation research is carried out in combination with the optical storage system.A life model and economic analysis model of battery and supercapacitor are established,the optimization flow is determined,and the particle swarm optimization algorithm is used to solve and analyze the optimization target.Finally,the optimized optical-storage system not only meets the reliability of power supply,but also improves the overall economy of hybrid energy storage system.