Study on the coil design of the reusable linear magnetic flux compressor

The reusable linear magnetic flux compressor has been regarded as a preferred pulsed power supply for an electric gun. A coil with continuously varying pitch and area of the conductor cross section is the main part of the compressor and needs to be optimized in order to obtain a required shape of the current pulse. For this purpose, a two-dimensional finite-element model was constructed and the magnetic flux diffusion, the current, and temperature distributions in the coil were simulated and the inductance of the coil was calculated. In order to verify the model, a nonuniform spiral test coil was designed. The inductance of the coil was measured by a transient oscillation method at various frequencies. A comparison between the calculated and measured results shows that the model is an effective tool for optimal design of the compressor coil.