Journal of Electrical Engineering ›› 2017, Vol. 12 ›› Issue (4): 1-9.doi: 10.11985/2017.04.001

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Magnetic-Thermal Coupling Analysis of Air-Core Reactor in EAST Fast Control Power Supply

Hu Yunpeng1,Bao Xiaohua1,Zhang Cheng1,Chen Yuanyang1,Gao Ge2   

  1. 1.School of Electrical Engineering and Automation Hefei University of Technology Hefei 23009 China
    2.Chinese Academy of Sciences Institute of Plasma Physics Hefei 23000 China
  • Received:2017-02-22 Online:2017-04-25 Published:2019-12-23
  • Supported by:
    Project supported by the National Natural Science Funds of China(51377039);Project supported by the National Natural Science Funds of China(51677051)

Abstract:

Magnetic field generated by the pulse-current flowing into air-core reactor of the experimental advanced superconducting 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.

Key words: EAST fast control power supply, output cabinet, air-core reactor, magnetic field, shield, eddy current loss temperature

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