摘要
通过等效电路方法计算了MA量级小型螺线管爆磁压缩发生器(HEMCG)各参数,得到发生器的损耗主要来自非欧姆损耗。设计的HEMCG整体外径约140 mm,长度小于550 mm,初始电感128.7μH。实验表明,在初始电流3.6 kA条件下,在100 nH负载上输出前沿75.2μs、峰值1.87 MA的电流脉冲,电流放大约519.4倍,能量放大约209.5倍,炸药化学能到电磁能的转换效率为6%。两发HEMCG分别经原边电感约440 nH、副边电感约4μH、耦合系数约0.85的电缆变压器调制,在4μH负载上得到了上升时间约80μs、峰值72 kA的脉冲电流,变压器能量传输效率约为26.8%。
The parameters of miniature MA-level helical explosively-driven magnetic flux compression generator（HEMCG） are calculated by method of equivalent circuit,and the result indicates that the mainloss of HEMCGis non-ohmic loss.The entire outer diameter of HEMCG withinitial inductance of 128.7μHis about 140 mm,and the lengthis less than 550 mm.When the initial current injected is 3.6 k Ainthe experiment,a pulse current with 75.2μs risetime and 1.87 MA peak valueis obtained on the 100 nH load while the seed current is amplified by 519.4 times,which means that the energy amplification coefficient is 209.6,and the conversion efficiency from chemical energy of explosive to electromagnetic energy is 6 %.The HEMCG is modulated by cable transformer with about 440 nH priary inductance,4μH second inductance and 0.85 coupling coefficient,a pulse current with 80 μs risetime and 72 kA peak valueis gained onthe 4μH load,the energy transmission efficiency of the cable transformer is 26.8 %.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2010年第10期2492-2496,共5页
High Power Laser and Particle Beams
基金
国家高技术发展计划项目
关键词
爆磁压缩发生器
强流脉冲电源
脉冲功率技术
电缆变压器
调制
explosively-driven magnetic flux compression generator
high-current pulse power source
pulse power technology
cable transformer
modulation
