通过对以电容器替代爆磁压缩发生器的系统等效电路进行理论分析, 对影响这种调制电路性能的关键问题及其解决方法进行了讨论。根据理论分析结果对调制电路进行了设计。在初步实验中, 当用于去除电爆炸丝上附加电压的撬断开关保持断开时, 变压器原边电流切断不彻底, 电容负载上充电电压峰值为-264 kV; 保持其他电路参数不变, 而使撬断开关在电爆炸断路开关断开过程中闭合时, 变压器原边电流切断彻底, 在相同负载上充电电压峰值为-374 kV。实验结果验证了理论分析结果, 并证明了采用这种调制电路能够实现爆磁压缩发生器与高阻抗负载匹配。

The explosive magnetic flux compression generator (FCG) is a kind of compact pulsed power source with relatively low characteristic impedance. To match the impedance of the generator and the load in kinds of applications, some special power conditioning circuits are always in need. In this paper, a power conditioning circuit based on the electro-exploding opening switch (EEOS) and pulsed transformer is investigated. By analyzing the equivalent circuit of the system where the generator is replaced by a capacitor, a key factor determining the performance of the power conditioning circuit is discussed, as well as its solution. Based on the analysis, the power conditioning circuit with coaxial structure is designed. In the preliminary experiments, the capacitive load was charged to a peak voltage of -267 kV when the crowbar switch used to remove the additional voltage across the fuse kept open, and it was charged to -374 kV when the crowbar switch closed during the opening process of the EEOS. The analysis conclusions are basically proved by these experimental results. And the power conditioning circuit introduced is proved to be efficient to match the impedance of the FCG and high-impedance load.