用周期铁磁结构环作磁累积发生器的初始能源
Possibility of using periodic structure permanent magnetic ring as initial energy source for a magnetocumulative generator
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摘要: 首先推导了描述铁磁体的磁场方程，并分析计算了圆筒型周期性永磁结构环内部所携带的磁能，研究了磁能与永磁体质量的关系。分析表明，采用内外径分别为60和90mm、长为60mm、质量约为30kg的四级周期永磁结构能够提供1kJ左右的磁能。这种结构有可能成为间接馈电磁累积发生器的初始能源。Abstract: In a lot of singleshot applications and experiments at remote locations where magnetocumulative generator provide the most practical pulse power, it is impracticable to use a capacitor bank as the initial energy source. Ｖ．Ｖ．Gdovnina et al has used a permanent magnet ring as the initial energy source to drive a magnetocumulative generator, but the energy density stored in a single permanent magnet ring is very low. In this paper，the possibility of using periodic structure permanent magnetic rings as initial energy source of magnetocumulative generator is analyzed theoretically. It is concluded that 1kJ initial energy can be provided to magnetocumulative generator by the periodic structure permanent magnetic ring whose mass is less than 30kg and the outside radius less than 60
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