The System Design Of Pulsed Power Supply Based On Superconducting Pulsed Power Transformers With Time Delay Effect Of The Secondary Side

As a new interdisciplinary,pulsed power technology plays an important role in many fields,including national defense,industry and daily industry.Because of the characteristics of high density and low-loss of superconducting magnetic energy storage,the requirements of miniaturization,integration and practical utility can be achieved in superconducting pulsed power devices.However,superconducting inductor has the overvoltage risks in discharge phase of the pulsed power system.Therefore,the overall performance of the system still need to be improved by promoting the discharge mode,circuit breaker and protection circuits.In this paper,a new type of high-temperature superconducting inductive pulsed power supply with time delay effect of the secondary side is proposed,which is combined with pulsed power system based on high-temperature superconducting pulsed transformer emerging currently.Meanwhile,the experiment and research on discharging mode of the proposed pulsed power supply is discussed by building an experimental platform.Firstly,the theoretical analysis and simulation have been made to study the discharge mode based on existing superconducting magnetic energy storage and superconducting pulsed transformer.Through comparison and analysis,it is found that various discharge modes have different characteristics.In particular,the combination of energy storage and discharge can be realized by superconducting pulsed transformer mode,which has great advantages in structure and weight.In addition,discharge modes with limited voltage structure and auto pulsed power supply are proposed by this laboratory,which can effectively inhibit high voltage across opening switch and improve efficiency of the entire system.Furthermore,based on the traditional pulsed power supply with superconducting pulsed transformer,a high-temperature superconducting inductive pulsed power supply with time delay effect of the secondary side is proposed innovatively.Making use of the delay-closing switch in secondary side,a controllable time difference between primary and secondary side can be obtained.Thus,one more ideal energy distribution between superconducting inductor and capacitor in primary circuit will bring about more needed pulsed waveforms.Through simulation and experiment analysis,the pulsed power supply will produce pulse output with higher pulse peak value,higher energy transfer efficiency and better waveform quality compared with those of traditional discharge circuit under excellent delay conditions.In order to expend the application fields of the pulsed power supply,a multimodule inductive pulsed power supply with improved pulse-forming process is designed.This article mainly focuses on the theoretical and simulations analysis of the module arrangement,module amount N,and arrangement radius R,which can significantly influence the mutual coupling effect between modules.With the application of the toroidal arrangement,the mutual coupling effect between modules can be increased by increasing the number of modules and arrangement density to improve the performance of system.It is a new idea to expand the application of pulsed power supply and improve the performance of multi-module system.Finally,the high-temperature superconducting inductive pulsed power supply with time delay effect of the secondary side is extended in this paper.Through the simulation analysis,the feasibility of this pulse power system with six modules has been proved.