Energy Storage Inductor To Charge And Discharge Control And Application

Inductive energy storage technology is a energy storage technology which uses a superconducting coil to store the electric energy from power net by the form of electromagnetic energy, which can be sent back to the power net or be used for other purposes,usually called electromagnetic energy storage. It is essentially inductive energy storage technology, relative to other energy storage technology, it has the advantages of big storage capacity and simple control way, therefore, it has a wide application in many field such as power systems, wind power, photovoltaic power generation, superconducting Tokamak device, pulse Power, uninterrupted power supply and so on.This paper has done some basic research on SMES (Superconducting Magnetic Energy Storage) by the establishment of electromagnetic energy simulation model and test circuit. On this basis, a set of superconducting electromagnetic energy control scheme has been proposed and its feasibility has been verified.Above all, on the basis of relevant literature in recent decades at home and abroad, this paper discussed the superconducting magnetic energy storage device of the research status and development trend, introduced the basic principles of SMES system and its structure, made extensive research of related technology involving the SMES.After that, the paper has made the analysis of the electromagnetic energy of the charging process and storage process in the ideal circumstances. In order to study the impact of circuit parameters on energy storage process, the experimental model of the electromagnetic energy storage system is proposed. Based on the model, simulated the electromagnetic energy storage process by compiling Matlab program and using Simulink. Then on the circumstance of using resistive coil, focusing on the different current conditions, respectively, designed the electromagnetic energy storage test circuits and the measurement circuit of the time of energy storage. By changing the charge current changes and loop resistance (by soaking inductance coil into liquid nitrogen), discussed the impact of the circuit parameters on the storage process, drew conclusions consistent with the simulation results, analyzed the superiority of the superconducting coil used for electromagnetic energy storage.In the applications of the electromagnetic energy storage,the energy will decline exponentially if uncontrolled over the process of the energy release process.Therefore, in practical application, it is often necessary to control the load voltage or current.In view of this, this paper puposed a set of scheme of superconducting electromagnetic energy constant voltage control in the final chapter. Based on the simulation of the scheme, this paper designed the experiment circuit by using PWM controller SG3524,and verify the feasibility of the scheme. This paper pointed out the direction and laid the foundation for the further study in SMES field.