无磁芯复位电路的磁脉冲压缩系统的研制

Development of a New Magnetic Pulse Compression System Without External Remagnetization Circuits

为减小磁开关的体积、提高磁脉冲压缩的能量传递效率和频率,分析了基于省去磁芯复位电路的磁脉冲压缩系统的工作原理,结合磁开关的工作特性,设计出一种新型的单级磁脉冲压缩拓扑结构,它省去了磁芯复位电路且结构上更加简单、紧凑;并详细介绍了磁脉冲压缩装置的工作原理,通过理论计算给出了此装置关键元件的参数;最后结合理论分析,实验研究了两种特性的磁脉冲压缩装置的不同特性;两种装置可以分别输出幅值为4.8kV、脉冲上升沿0.5μs和幅值为3.6kV、脉冲上升沿10μs的脉冲电压波形;实验结果分析表明:由于磁开关的特性,可使主回路气体开关实现零电流开通,有效减小了气体间隙的损耗,有利于提高气体开关的工作频率。

In order to reduce the volume of magnetic switch and to increase the energy transfer efficiency and frequency of magnetic pulse compression（MPC）,the principle of a magnetic pulse compression system without external remagnetization circuits was analyzed.A new kind of one-stage magnetic pulse compression system was designed based on the characteristic of magnetic switch;the new topology which did not contain external remagnetization circuits was simpler and compact.The detailed operation of the MPC system was described,and the parameters of the key components of the magnetic switch were presented according to theoretical calculation.To well understand the principle of the MPC system,two MPC devices with different characteristics were experimentally studied,which could deliver 4.8kV and 3.6kV pulse waveforms with the pulse rise time of 0.5μs and 10μs,respectively.The experimental results show that the gas switch in the main loop of the MPC topology can realize zero-current closing approximately,and this performance can reduce the losses of the gas gap effectively and is helpful to increasing the working repetition of the gas switch.