射频爆磁压缩发生器能量转换效率的提高方法

Theoretical Analysis on the Efficiency of Radio Frequencies Explosive Magnetic Flux Compression Generator

爆炸产生的化学能转换为电磁能的效率的高低直接影响射频爆磁压缩发生器系统的工作性能。根据射频爆磁压缩发生器的电磁脉冲产生原理,对提高射频爆磁压缩发生器电磁能转换效率的方法进行了综述。指出定子线圈锥形指数螺距绕制可以有效地降低系统欧姆损耗,电流最大时刻起爆可以获得最大初始压缩磁通,轴线方式起爆能够压缩系统工作时间、提高输出脉冲频率。通过数值法求解射频爆磁压缩发生器等效电路方程,对电流最大时刻起爆、轴线起爆方式输出电流脉冲进行了数值模拟。分析表明,所述方法均可有效提高射频爆磁压缩发生器的能量转换效率。

Energy conversion efficiency is the key factor which determines system＇ s performance. The methods to improve the energy conversion efficiency of RF MFCG were summarized according to the electromagnetic pulse generating principle of RF MFCG. It was concluded that stator coils winded in exponential pitch can effectively reduce ohmic dissipation; detonation at the time of maximal current can get the greatest compression magnetic flux; detonation in axis mode can reduce working time of the system and increase the frequency of output pulse. The equivalent circuit equation of RF MFCG was solved using mathematical analysis method. Numerical simulation was carried out on the ways of detonation at the time of maximal current and detonation in axis mode. The result showed that the methods discussed can improve RF MFCG energy conversion efficiency.