Jul 21 – 25, 2019
Connecticut Convention Center, Level 6
US/Eastern timezone

C3Po1B-01 [15]: Development of the HTS Magnet for the 1 MW Superconducting Induction Heater

Jul 24, 2019, 9:00 AM
Level 6, Cryo Expo Exhibit Hall

Level 6, Cryo Expo Exhibit Hall


Shaotao Dai (Beijing Jiaotong University)


The induction heater with DC high-temperature superconducting (HTS) magnetization coil is a promising device for aluminum, copper and brass extrusion billets. Compared with an energy efficiency of just some 50% for conventional technology and limitations in processing speed, the energy efficiency of the HTS DC induction heater increase to more than 80%. The HTS DC magnet with its refrigeration system is placed concentric with the middle iron-core limb. The magnet consists of three solenoid coils wound with YBCO produced by Shanghai Superconductor, and the critical current of the tape is 90A (77K, self-field). The inner and outer diameters of the YBCO magnet are Φ1960mm and Φ2009mm, respectively. The magnet is a cryogen free system cooled by two AL325 cryo-refrigerators, and the operating temperature is about 25K. The maximum operating current is 130A at 25K, and corresponding magnetic field in the middle of the billet is 0.5T.

Primary authors

Shaotao Dai (Beijing Jiaotong University) Dr Tao Ma (Beijing Jiaotong University) Mr Lei Hu (Beijing Jiaotong University) Mr Bangzhu Wang (Beijing Jiaotong University) Dr Teng Zhang (Beijing Jiaotong University)

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