Research On The Repetitive Inductive Pulsed Power Supply Topology With ICCOS Technique

Pulsed power technology occupies an important position in the fields of modern defense science and cutting-edge technology.It is one of the disciplines that many countries are striving to develop.The pulse power supply is an important part of the pulse power system which is responsible for providing the required electrical pulses for the entire system.With the development of superconducting technology and semiconductor switches,inductive pulsed power supply(IPPS)has gradually become a viable choice for the development of practical pulsed power supplies.It is one of the hottest research topics in the field of pulsed power technology at present and in the nearly future.In order to meet the increasing requirements of pulse power supply,our research group proposed a repetitive IPPS circuit with bridge current commutation unit in the previous work.This circuit utilize a high-temperature superconducting pulse transformer(HTSPPT)as the energy storage carrier.A transfer capacitor is added to recapture the leakage flux and limit the overvoltage of the switch.However,a fully-controlled semiconductor device which has poor current commutation capacity and high money cost is used as the main switch of this circuit,limits the energy level of this circuit.To solve this problem,this article draws on the application of inverse current commutation and thyristors(ICCOS)technique in XRAM circuit and STRETCH meat grinder circuit,proposes a repetitive IPPS circuit with ICCOS technique.This circuit is the improved version of the repetitive IPPS circuit with bridge current commutation unit.By integrating the function of generating inverse pulses into an auxiliary capacitor,the improved circuit changes the opening switch from an insulated gate bipolar transistor(IGBT)to a thyristor.Through theoretical analysis and simulation research,it can be found that the improved circuit retains the ability to generate continuous pulses,and its auxiliary capacitor can still recapture the leakage flux and limit the overvoltage of the opening switch.After that,a comprehensive comparison between the improved circuit and the original circuit is carried out,which fully proved the advantages of the improved circuit in terms of performance,cost and reliability.Then,to study the relationship between the parameters and performance indicators,the improved circuit is solved and analyzed stage by stage.On the basis of theoretical analysis,the time-domain expressions of main circuit performance indexes can be obtained by further derivations.The results show that by selecting circuit parameters reasonably,the improved circuit can obtain the required performance indicators and achieve a relatively ideal working state.Finally,an experimental platform is built according to the experimental topology of the pulse power circuit and a low-temperature test is carried out.At 77 K,the charging current reaches 110 A,the output pulse reaches 1.28 k A,and the current amplification factor reaches 11.6.The experimental results prove the feasibility of the circuit and the correctness of the circuit theoretical analysis.In summary,the repetitive IPPS circuit with ICCOS technique proposed in this paper has more advantages than the original circuit in terms of energy level and money cost.Therefore,the repetitive IPPS circuit with ICCOS technique can be a useful addition to the research on IPPS circuits based on HTSPPT.