22-27 September 2019
Hyatt Regency Hotel Vancouver
Canada/Pacific timezone

Mon-Mo-Po1.01-05 [4]: Quench protection method using current of magnetically coupled secondary coil for fast current reduction of superconducting magnet

23 Sep 2019, 09:15
Level 2 Posters 1

Level 2 Posters 1


Yojong Choi (Yonsei University, Seoul, Korea)


In general, superconducting magnets operate at high currents, and excessive joule heating due to high currents can damage the magnet when quench occurs. Therefore, a quench protection system that can reduce the magnet current quickly is required when the normal zone occurs in the magnet. For this reason, several quench protection methods are being developed to rapidly reduce the current. In this paper, we present a new quench protection method that rapidly reduces current in a superconducting magnet by injecting current into a magnetically coupled secondary coil. The proposed system is magnetically coupled without direct connection to the magnet and is used in conjunction with a protection method using a conventional dump resistor to help reduce the current quickly. The performance of this system was verified using a small scale high temperature superconducting test coil.

Primary author

Yojong Choi (Yonsei University, Seoul, Korea)


Haeryong Jeon (Yonsei University) Junseong Kim (Electrical and Electronic Engineering, Yonsei University) Geonwoo Baek (Yonsei University) Seunghak Han (Yonsei University) Mr Young Gon Kim (Electrical and Electronic Engineering, Yonsei University) Prof. Tae Kuk Ko (Yonsei University)

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