Ultra compact high power primary energy source

Abstract

Ultra compact high power primary energy sources especially for single use can be built in many ways, the high energy density capacitors and the FCGs (Flux compression generators) are the core components. The pulsed power capacitors have made great progress now, for example, the energy storage density of the self-healing type metal film capacitors has more than 2kJ/L [1]. We can use these capacitors to build primary energy sources, but the size and weight of these capacitors under rated conditions still can not meet the requirements in some application cases. An ultra compact primary source by excess using of the self-healing metallized film capacitor will be introduced, which can output more than 100kA current in 4μH inductive load, and the weight is no more than 60 kg. The FCGs are also frequently applied to build ultra compact primary sources. Two typical FCGs weighing about 10 kg will be introduced, one can output 100 kA current in 10μs while the load inductance is 4 μH; The other can output 1 MA current in 100 nH load. The FCGs need initial magnetic flux, In order to guarantee the system compactness, the self-healing type metallized film capacitors will be selected by excess using. In many compact primary energy sources, the discharge switches must be compact and reliable. Several practical switches will be discussed including the mechanical, the membrane, the detonator and the deflated switches.