Detailed Design of a 2,000 A, 400 mH Toroid-Type HTS DC Reactor for an HVDC System
General DC reactors in high-voltage direct current systems experience an electrical loss due to the resistance from copper winding in the DC reactor. The toroid-type high-temperature superconducting (HTS) DC reactor can be expected to decrease the disadvantages associated with general DC reactors. In this paper, the design of a toroid-type HTS DC reactor is presented. The magnetic fields of the toroid-type HTS DC reactor magnet were analyzed using the finite element method program. The conduction cooling system of the HTS DC reactor was designed based on the results of thermal analysis. The target current and inductance of the HTS DC reactor were 2,000 A and 400 mH, respectively at 20 K.