Study of frequency dependent AC loss in Bi-2223 tapes used for gradient coils in magnetic resonance imaging
作者： Jing Yuan , Jin Fang , Peng Qu , G.X. Shen , Z.-H. Han
DOI: 10.1016/J.PHYSC.2005.04.022
关键词:
摘要: Abstract The use of Bi-2223 tapes as the material for gradient coils in Magnetic Resonance Imaging (MRI) is promising because have very high critical current and low power loss. Frequency dependent AC loss was measured at operating frequencies coil from 200 Hz up to 2000 Hz. It found that decreases with frequency below 800 Hz then increases contribution hysteresis loss, eddy resistive total are investigated individually. power-law E – J characteristic position distribution considered major reasons dependence 800 Hz. Eddy should account increasing above
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