Open AccessAnalysis of Eddy-Current Loss and its Reduction in a Conduction-Cooled HTS Magnet
Author(s) -
Kai Ji,
Wenfeng Long,
Jinliang He,
Jun Zheng
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/300/4/042126
Subject(s) - eddy current , magnet , thermal conduction , current (fluid) , materials science , water cooling , nuclear engineering , superconducting magnet , reduction (mathematics) , mechanics , nuclear magnetic resonance , mechanical engineering , electrical engineering , physics , engineering , composite material , geometry , mathematics
Since conduction cooling system is environmental friendly and easy operating, the conduction-cooled method is widely used in cryogenic cooling system of high-temperature superconducting (HTS) magnet. The eddy-current losses are generated in the cooling structures when HTS magnet is charging and discharging or the current in the magnet is alternating. In this paper, a 3D model of analyzing the eddy-current loss was built. The eddy-current losses of a HTS magnet with different cooling structures were calculated. Thermal analysis of the HTS magnet was carried out together with the electromagnetic analysis. The effect of the cooling structures’ geometric parameters on the eddy-current losses was discussed. The methods of reducing the eddy-current loss were proposed. The analysis results demonstrate that the optimization of the geometric parameters would greatly benefit the reduction of the eddy-current losses.