Open AccessFrequency Loss Induced Quench (FLIQ) Protection System for Insulated Coil REBCO Magnets
Author(s) -
Kikelomo Ijagbemi,
Daniel S. Davis,
E. Stiers,
Hongyu Bai,
Sastry Pamidi
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/755/1/012131
Subject(s) - insulated gate bipolar transistor , electromagnetic coil , magnet , materials science , superconducting magnet , electrical engineering , current (fluid) , superconducting magnetic energy storage , nuclear engineering , nuclear magnetic resonance , mechanical engineering , voltage , physics , engineering
Frequency Loss Induced Quench (FLIQ) system is a novel technique that relies on generating AC losses to uniformly heat a superconducting coil to induce a safe and rapid quench. FLIQ drives an imbalance in the transport current between two or more sections of the magnet. To drive the imbalance, FLIQ uses an H-bridge design with Insulated Gate Bipolar Transistor (IGBT)s, whose gates are controlled based on the current feedback, allowing the system to operate at resonance. Simulation of estimated energy per volume deposited by FLIQ and sensitivity analysis of its parameters are performed and the results presented. Application of FLIQ for protection of high temperature superconducting (HTS) magnet systems is described.