Fabrication and Testing of a Prototype 10-kW Class HTS DC Induction Heating Machine

The authors presented practical fabricated specifications of a prototype 10kW class high-temperature superconductor (HTS) direct current (DC) induction heating machine and analyzed its operational characteristics including the system’s efficiency and the temperature distribution of the aluminum billet in detail In this paper, we discussed the fabrication process and focused particularly on the practical operating results of the HTS DC induction heating machine. The major operating characteristics of the HTS magnet under each stage were analyzed in detail. Detailed efficiency was investigated through the measuring of the realtime motor input and the billet temperature. Through a monitoring system, critical parameters were measured in real-time operation. The total heating time to 500 ∘ C of the billet’s temperature was 400 s at 0.25 T at the center of the billet. These research outcomes are expected to be useful for the commercial design of a large-scale 2G HTS DC induction furnace for industrial fields.