Post-Quench Analysis and Mechanical Considerations for No-Insulation HTS Racetrack Field Coils in a 5 MW Superconducting Motor

IF 1.7 3区物理与天体物理 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Applied Superconductivity Pub Date : 2025-02-11 DOI:10.1109/TASC.2025.3540783

JuKyung Cha;Geonyoung Kim;Chaemin Im;Jonghoon Yoon;Jaheum Koo;Seungyong Hahn

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引用次数: 0

Abstract

High-power-density superconducting motors are essential for the electrification of transportation systems. High-temperature superconducting (HTS) motors with no-insulation (NI) windings have advantages in achieving high current density, stability, and protection. In this paper, a 5 MW motor is designed, featuring high-energy NI HTS field coils. A post-quench analysis was conducted to investigate its characteristics. Considering critical current and mutual inductance, a lumped circuit model was used to simulate the quench. Thermal modeling was performed to evaluate the temperature rise. Simulation results show an azimuthal overcurrent of 130% of the operating current and a temperature rise of 117 K. Stress analysis for each racetrack coil was conducted, revealing a maximum hoop stress of 882 MPa, which can lead to the degradation of the critical current. To reinforce the racetrack coils, the required preload was calculated, reducing the stress to 463 MPa.

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来源期刊

IEEE Transactions on Applied Superconductivity 工程技术-工程：电子与电气

CiteScore

3.50

自引率

33.30%

发文量

650

审稿时长

2.3 months

期刊介绍： IEEE Transactions on Applied Superconductivity (TAS) contains articles on the applications of superconductivity and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Large scale applications include magnets for power applications such as motors and generators, for magnetic resonance, for accelerators, and cable applications such as power transmission.