Quench Detection of the KSTAR CS Coil by Considering Plasma Current Effect

Autor:	K.R. Park, Young Mu Jeon, H. Yonekawa, Y.O. Kim, Jinsub Kim, Kwang-Pyo Kim, Yong Chu
Rok vydání:	2019
Předmět:	Materials science Plasma parameters Detector Mechanics Plasma Condensed Matter Physics Electronic Optical and Magnetic Materials law.invention Physics::Plasma Physics law Electromagnetic coil KSTAR Physics::Space Physics Eddy current Electrical and Electronic Engineering Noise (radio) Voltage
Zdroj:	IEEE Transactions on Applied Superconductivity. 29:1-5
ISSN:	2378-7074 1051-8223
DOI:	10.1109/tasc.2019.2905050
Popis:	The plasma-driven inductive voltages were not negligible and should be taken into account for the reliable operation of the voltage-based quench detection of the KSTAR CS coil. For the active compensation of such plasma-induced voltage noise, plasma parameters should be measured in real-time and applied to the quench detection system. The selection of plasma parameters by considering their contribution to the noise is of primary importance. A code, which can estimate the induced coil voltage driven by plasma, is developed by using a simplified plasma response modeling. The numerical analysis has showed that there is an apparent influence from the plasma, while the influence from eddy currents induced in passive structures is negligible. The change of plasma current is the primary noise source and the radial and vertical motions of plasma have an effect, although they are small. The performance of the quench detector is developed and tested during the 2017 KSTAR campaign. The noise rejection performance is discussed with various experimental results and numerical estimations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d4e7a8fbf80b7b1be09440eb0641ff02 https://doi.org/10.1109/tasc.2019.2905050 Zobrazit plný text záznamu