A 100 kWh energy storage coil for space application

The design of a 100 kWh superconductive storage unit for space application is the subject of this paper. High current densities in NbTi-copper composites, adiabatic stability and advanced construction techniques with Kevlar/epoxy tensile supports are used for a β = 0.3 solenoid cooled to 1.8 K at 10 T. The best weight efficiencies are 26.4 Wh/kg and 21.2 Wh/kg for current densities of 5 and 2.5 × 10 8 B A/m 2 respectively.