  Helical Flux Compression Generators (HFCG) are used for generation of
mega-amper current and high magnetic fields. We propose the two dimensional
HFCG filament model based on the new description of the stator and armature
contact point. The model developed enables one to quantitatively describe the
intrinsic magnetic flux losses and predict the results of experiments with
various types of HFCGs. We present the effective resistance calculations based
on the non-linear magnetic diffusion effect describing HFCG performance under
the strong conductor heating by currents.
