Abstract
A magnetic energy storage system made in an ellipsoidal enclosure and associated variable height superconductive coils is analysed and a comparison with other systems possessing the same superconductive material volume V_{s} and operating current I is performed. Two sets of geometrical dimensions are proposed, one associated with V_{s}=0.01 m^{3} and I=80 A and the other corresponding to V_{s} = 1.437 m^{3} and I=540 A. An efficiency evaluation dependency W_{m}/V_{S} ?V_{Threshold}/V_{Overall}, taking into account the safety magnetic field threshold B_{Threshold}=0.5 mT distance, is introduced. The results show a remarkable improvement achieved with the ellipsoidal structure in terms of stored energy as well as better shielding in respect to the equivalent system solenoid.
Citation
Tuleasca, I., Kacprzak, D., & Takahisa, O. (2007). Contributions in the magnetic energy storage devices shielding and energy confinement. International Journal of Applied Electromagnetics and Mechanics, 25(1-4), 243-247.
