27 August 2017 to 1 September 2017
RAI Congress Center, Amsterdam, The Netherlands
Europe/Amsterdam timezone

Experimental and numerical analysis of quench characteristics on a HTS coil by fault disturbance in HTS generator

28 Aug 2017, 13:15
1h 45m
Posters Area

Posters Area

Poster Presentation of 1h45m G2 - Quench and Normal-Zone Bahavior Mon-Af-Po1.10

Speaker

Dr Zhen Huang (Shanghai Jiao Tong University)

Description

For the high temperature superconducting (HTS) coils supplied by DC powers, a thermal disturbance may cause local temperature rise and irreversible damage because of constant current. In contrast, when a thermal disturbance occurs, the current flowing in a closed-loop HTS coil operated in persistent current mode (PCM) will decrease correspondingly. In this paper, a closed-loop single-pancake HTS coil energized by persistent-current switch (PCS) is tested to obtain the minimum quench energies (MQEs) and normal zone propagation velocity (NZPV), which we use to describe thermal stability, as well as an unclosed one. A FEM model coupling with PDEs and thermal module is built to reveal the mechanism. The experiment results coincide with the simulated ones and show that the closed-loop coil has larger MQEs and better thermal stability.

Submitters Country China

Primary author

Dr Zhen Huang (Shanghai Jiao Tong University)

Presentation Materials