Pulsed magnetic energy storage for space applications

Toroidal energy storage magnets can be used as power supplies for many space applications. Their list of advantages include high efficiency, light weight, zero stray magnetic field, zero electro-magnetic radiation, and fast pulsing. Superconducting toroidal field coils with an inner small cryoresistive shield are proposed. Both the superconducting coil and the cryoresistive coil are connected in parallel. Their configuration is such that energy pulses are drawn mainly from the resistive coil, while the superconductive coil is shielded from the resulting AC field and current produced. The relationships between system parameters, such as coil dimensions, ampere meters, coil surface area and structural mass on one side, and the coil aspect ratio, stored energy and maximum field on the other side are derived for toroidal coils in rectangular and bending free D-shaped configurations.