Research On Performance Impact Parameters Of A Continuous Pulsed Power Supply Based On Superconducting Pulse Transformer

The main development trends of pulsed power supply in electromagnetic launch system are miniaturization,lightweight and repetition rate.High temperature superconducting(HTS)inductive pulsed power supply has attracted the attention of researchers because of its high energy storage density,low energy loss and low power requirements.Among them,the impulsive discharge mode based on the energy storage and pulse compression of High temperature superconducting pulse transformer(HTSPPT)is one of the most significant orientation for the development of inductive pulsed power supply.At present,most of the studies for inductive pulsed power supply are focused on the single output of the topology rather than the continuous mode used in electromagnetic launch,and the problem of the residual energy after each electromagnetic launching remains to be improved.For that reason,this paper propose a continuous pulse power supply circuit based on HTSPPT and analyze the circuit parameters that effect the major performance of the circuit.The critical parameters of continuous pulsed power supply circuit have been analyzed firstly in this paper via building a 3kJ HTSPPT coil module.After that,we verify the critical parameters calculation by using the finite element simulation.The simulation and theoretical results show that the current amplification factor decreases with the increase of the secondary inductance,the maximum voltage across the opening switch and the maximum capacitive energy storage ratio decrease as well.Secondly,in order to verify the feasibility of the continuous pulsed power supply circuit,a small experimental HTSPPT was designed and a continuous pulse test platform was built for testing the continuous pulsed current.Next,to verify whether the pulsed power supply circuit can be used in driving an electromagnetic launch system with dynamic impedance,we establish a single continuous inductive pulsed power supply circuit model based on a HTSPPT module and put the circuit models of all discharge stages into simulation by using Matlab/Simulink for analyzing the circuit parameters which effect the electromagnetic launch system greatly,such as coupling coefficient,switching capacitor,secondary inductance and projection mass.We build the circuit model and coils model of multi-module continuous pulsed power supply by the base of single-module continuous pulse power supply circuit,and then the mathematical model and equivalent transformation of the multi-module continuous pulsed power supply are studied.We simulate the dynamic process of the multi-module continuous pulsed power supply by Matlab/Simulink and discuss the design principle of the critical parameters.Generally,the results of the study show that the continuous pulse power supply for electromagnetic launch based on HTSPPT in this paper has great superiority on generating continuous pulsed current and collecting the residual energy.It can provide a efficient scheme of pulsed power supply for the development of continuous electromagnetic launch technologies.