中文摘要：

当脉冲电流通过实验先进超导托卡马克（EAST）快控电源中空心电抗器时会产生磁场，导致输出柜发热。为了解决热问题，在空心电抗器周围安装一层或两层屏蔽体。电流幅值最大为1500A时，求解空心电抗器周围磁场分布以及输出柜的涡流损耗。将涡流损耗作为主要的热源，根据电磁学和热力学理论建立电抗器的三维磁热耦合有限元模型。本文对空心电抗器的温度场进行分析和讨论。结果表明，在屏蔽条件下空心电抗器的磁场和输出柜的温度都会降低。

英文摘要：

Magnetic field generated core reactor of the experimental advanced by the pulse-current flowing into airsuperconducting Tokamak （EAST） fast control power supply may cause a thermal problem in output cabinet. To solve the thermal problem, a layer or two layers of shielding are arranged around the air core reactor. When the maximum amplitude of the pulse current is 1 500A, the calculation method of magnetic field distribution around the air-core reactor is studied, as well as the output cabinet of eddy current loss. Taking eddy current loss as a main thermal source, three dimensional （3D） magnetic-thermal coupled finite element models of the reactor are established according to electromagnetism and thermodynamics theories. Temperature field of air-core reactor is analyzed and discussed in this paper. The results show that the magnetic field around air-core reactor and the temperature of output cabinet are decreased under shielded condition.