Superconductive energy storage inductors: Internal transient oscillations and eddy current losses

The effects of fault induced transient oscillations are investigated using both analytic equations and a digital computer solution to state-space analysis of pi-section equivalent circuits. It was found that, because of the damping of the external resistance in the inverter-converter portion of the superconductive energy storage inductor system, the possibility of transient induced long term oscillations is precluded. An eigenvalue solution for the relaxation modes of a filamentary model for square and rectangular cross section, very long, isolated conductors was achieved using the EISPACK computer routine. Through the use of Fourier-series analysis, it was possible to obtain MODAL solution for the effective resistance ratios and for relative current density distributions.