AC Loss Evaluation of a Toroidal D-Shaped 10 MJ Superconducting Magnet

A 10 MJ HTS SMES designed for power system voltage compensation and active-reactive power regulation applications is under construction. The system aims to complete 10MJ charging or discharging in 2s time, so it is crucial to analyze its AC losses. In this paper, the AC loss of the magnet is analyzed by the dimensional reduction inversion method, and the AC loss of the magnet for one complete working cycle is obtained to be about 72 KJ, which provides a reference for the design of the cooling system of SMES.