Research On Energy Recoveiy Method Of The Inductive Pulse Power Supply For Electromagnetic Launch

Due to its characteristics of high energy density and high magnetic field strength,pulsed power technology is widely used in the fields of national defense military and high-tech,and it is one of the key research and development objects of researchers in many countries.With the development of superconducting technology and high-temperature superconducting materials,inductive pulsed power supply(IPPS)has great significance in the lightweight,miniaturization and re-frequency of pulse power supply devices.Among them,electromagnetic launch(EML)is one of the important application fields of IPPS.In order to meet the performance requirements of continuous launch of electromagnetic railguns,our research group proposed a repetitive IPPS circuit with inverse current commutation with semiconductor devices(ICCOS)technology in previous research.This circuit can recover the residual energy of the system during the EML process,and avoid the muzzle arc at the end of the electromagnetic launch.At the same time,this circuit uses a thyristor as the main switch,which improves its application energy level in the field of EML.However,when using the repetitive IPPS circuit with ICCOS technology to drive the electromagnetic railgun,as the load inductance increases,the time for this circuit to recover the residual energy of the system will increase.If the residual energy recovery speed is too slow,it will affect the speed of the EML and the length of the launch track,which is not conducive to the application of this circuit in the field of the EML.Aiming at the above problems,this paper proposes an improved circuit of repetitive IPPS circuit with ICCOS technology based on the method of combining inductance and capacitance to recover energy.This circuit is based on the repetitive IPPS circuit,and it can form an oscillation loop through the secondary capacitor and the load inducta nce to realize the rapid recovery of the residual energy.Through the simulation and comparative analysis of the improved circuit,it is proved that the improved circuit retains the advantages of the original circuit and accelerates the recovery speed of the residual energy,which preliminarily verifies the feasibility of this circuit.After that,the experimental platform of the repetitive IPPS circuit with ICCOS technique and its improved circuit are built respectively,and the feasibility of the improved circuit is further verified by experiments and comparative studies.Finally,the improved circuit of repetitive IPPS circuit with ICCOS technique is used to drive the augment electromagnetic railgun.The simulations prove the feasibility of the improved c ircuit for EML.And the comparative analysis is carried out to further study the advantages of the improved circuit as the driving circuit in the EML system.In summary,the improved circuit of the repetitive IPPS circuit with ICCOS technology proposed in this paper has great advantages in improving the energy recovery speed of the IPPS,which can provide a feasible technical scheme for the development of the IPPS in the field of the EML system.