Modeling And Simulation Of Pulse Power Supply Based On Superconducting Pulse Power Transformer And ICCOS Technology

With the development of pulsed power technology,miniaturization,modularization,and frequency repetition have become the main development trends of pulsed power supplies for electromagnetic launching.The advantages of inductance in energy density and power density make inductive energy storage pulse power supply have great development potential.Especially with the development of high-temperature superconducting technology,the energy storage of superconducting inductors solves the power loss problem of traditional inductors and can reduce the power demand of primary power supply,which has attracted the interest of many researchers.In the previous research,the research group proposed an inductive energy storage continuous pulse power supply circuit based on superconducting pulse power transformer and ICCOS(inverse current commutation with semic onductor devices)technology.In this circuit,the superconducting pulse power transformer integrates energy storage and pulse forming,and the capacitor of the ICCOS module can recover the leakage inductance energy of the transformer and limit the voltage of the main switch.In a ddition,when the load current pulse reaches the desired width,the residual energy can be recovered by switching the primary inductor to the charging state.Most of the current literature discusses the working princ iple and feasibility of the pulse power circuit.In order to extend the continuous pulse power circuit to a higher energy level and meet the development require ments of system miniaturization and modularization,this paper optimizes the structural parameters of the superconducting pulse power transformer on the basis of circuit parameter analysis,and designs an MJ-level multi-module pulse power system.In this paper,firstly,the working process of the pulse power supply circuit is analyzed,the numerical calculation model based on the circuit time doma in equation is established by Matlab,and the influence of key parameters on the main circuit performance index is analyzed.Then,an experimental platform is built to verify the working principle of the pulse power supply circuit.Combined with the existing conditions in the laboratory,the countercurrent turn-off test and the influence test of capacitance parameters are carried out to verify the effectiveness of the theoretical analysis and numerical calculation method.Then,based on the Matlab Optimization Toolbox and the finite element simulation software Ansys Maxwell,taking the superconducting pulse transformer with 40 kJ energy storage as the research object and the minimum amount of BSCCO superconducting tape as the optimization objective,under the constra ints of energy storage,safe working current and coupling coefficient,the structure parameters of single module superconducting pulse power transformer are optimized and designed.According to the characteristics of electromagnetic launching pulse,a set of optimize d parameters are selected,and the rationality of the structure design of superconducting pulse power transformer is verified by electromagnetic-structure multi-physica l field simulation.Finally,taking the optimized single-module superconducting pulse transformer as the basic unit,a multi-module superconducting pulse transformer model with ring structure is designed,and its feasibility is also verified by multi-physical field joint simulation.Based on the analysis of circuit parameters and the electromagnetic simulation results of multi-module superconducting power pulse transformer,a multi-module pulse power supply systemis designed and simulated.MJ energy storage and continuous high current pulse output are obtained at a fixed frequency of 0.5 Hz.In summary,the multi-module MJ-level pulse power system based on HTSPPT and ICCOS designed in this paper can be applied to higher energy levels and reduce the cost,which can provide a certain reference for the optimal design of the multi-module inductive energy storage pulse power system.