Three Dimensional Study of Eddy Current Field and Temperature Field of 126kV three-phase enclosure-type GIS Bus

The paper deals with the eddy currents in thin circular cylinders of uniform conducting material, due to periodic currents in conductors lying parallel to the axis of the cylinder, or to the rotation of the cylinder in a two-dimensional field of force. The first of these problems was discussed by Mr M. B. Field in a paper entitled “Eddy current losses in three-phase cable sheaths,” read before the British Association at their Cambridge meeting in 1904. The solution proposed, however, although probably sufficient for the object, is mathematically defective, in that the field due to the current carried by the cable is assumed as the total field, the effect of the eddy-current field on the eddy currents themselves being left out of account.

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The numerical calculation of eddy-current Field and temperature field for insulation shell of permanent magnet shaft coupling

10.1109/icems12746.2007.4412068 ◽

2007 ◽

Author(s):

Zhang HongLiang ◽

Zou JiBin ◽

Zhu HongWei ◽

Shang jing

Keyword(s):

Temperature Field ◽

Numerical Calculation ◽

Permanent Magnet ◽

Eddy Current ◽

Current Field

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Analyses of three-dimensional eddy current field and thermal problems in an isolated phase bus

IEEE Transactions on Magnetics ◽

10.1109/tmag.2003.810403 ◽

2003 ◽

Vol 39 (3) ◽

pp. 1515-1518 ◽

Cited By ~ 15

Author(s):

S.L. Ho ◽

Y. Li ◽

W. Edward ◽

C. Lo ◽

J.Y. Xu ◽

...

Keyword(s):

Eddy Current ◽

Three Dimensional ◽

Current Field

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3D eddy current and temperature field analysis of edge induction heater

COMPEL The International Journal for Computation and Mathematics in Electrical and Electronic Engineering ◽

10.1108/compel-04-2015-0152 ◽

2016 ◽

Vol 35 (2) ◽

pp. 683-694 ◽

Cited By ~ 1

Author(s):

Yilun Li ◽

Shiyou Yang

Keyword(s):

Finite Element ◽

Temperature Field ◽

Eddy Current ◽

Three Dimensional ◽

Heating System ◽

Temperature Fields ◽

Rolled Steel ◽

Content Type ◽

Induction Heater ◽

Induction Heating System

Purpose – The temperature drop, especially in the edge of rolled steel in the hot rolling cooling has a catastrophic effect on the steel quality. The purpose of this paper is to study the coupled eddy current-temperature field of a C-type edge induction heater to provide references for engineering applications and designs. Design/methodology/approach – Three-dimensional finite element analysis (FEA) model of a C-type edge induction heater is developed. Especially, a numerical methodology to couple the eddy current and temperature fields is proposed for coupled eddy current and temperature problems involving movement components. FEA software ANSYS is used to solve the coupled eddy current and temperature fields. The heat loss from the eddy current fields is abstracted and processed, and taken as internal heat source in the analysis of the temperature field. The temperature distribution of the rolling steel is obtained. Findings – The numerical results can predict exactly the temperature rise of the rolled steel by means of the edge induction heating system. Practical implications – The proposed numerical methodology for coupling eddy current and temperature fields can be applied to engineering coupled eddy current and temperature problems involving movement components. Also, the developed model and method can be used in the analysis and design of the edge induction heating system. Originality/value – A numerical methodology to couple eddy current and temperature field for solving multi-physics field problems involving movement components is proposed and implemented in available commercial software. A three-dimensional model of the C-type edge induction heat heater is developed. Finite element method is employed to study the coupled eddy current-thermal problem. A method to deal with the movement of the strip steel is proposed. The proposed methodology can be applied to other coupled eddy current-temperature field problem with moving components.

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The modification and discretization for H/spl I.oarr/-ψ functional in three dimensional eddy current field

IEEE Transactions on Magnetics ◽

10.1109/20.582489 ◽

1997 ◽

Vol 33 (2) ◽

pp. 1283-1286

Author(s):

Huang Jian ◽

Yu Jihui ◽

Tan Bangding ◽

Rao Mingzhong ◽

Yun Zhenqing

Keyword(s):

Eddy Current ◽

Three Dimensional ◽

Current Field

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Research on Life Loss of Generator Retainer Caused by Negative Sequence Current

Journal of Physics Conference Series ◽

10.1088/1742-6596/2132/1/012043 ◽

2021 ◽

Vol 2132 (1) ◽

pp. 012043

Author(s):

Yong Wang ◽

Zhicheng Deng ◽

Jiaying Chen ◽

Di Wang

Keyword(s):

Contact Resistance ◽

Eddy Current ◽

Three Dimensional ◽

Two Dimensional ◽

End Effect ◽

Current Field ◽

Negative Sequence ◽

Retaining Ring ◽

Negative Sequence Current ◽

The Impact

Abstract With a large number of wind and solar power sources connected to the power grid, higher requirements are put forward for the power generation equipment to respond to the power grid imbalance. The safety research of generator rotor retaining ring under the impact of negative sequence current is of great significance. For 300MW turbogenerator, the two-dimensional and three-dimensional eddy current, temperature rise, stress and life of generator rotor under the impact of negative sequence current are analyzed and studied. The two-dimensional calculation models of stator and rotor are established, and the distribution of negative sequence eddy current field in rotor section is analyzed; considering the contact resistance between rotor and retaining ring and the end effect of magnetic field, a three-dimensional analysis model is established, and the calculation results of three-dimensional eddy current field, temperature field and stress field are obtained. The analysis shows that after considering the contact resistance between rotor and retaining ring and end effect, the current density at the contact between retaining ring and rotor big tooth edge is 17.6 times of the two-dimensional calculation result of rotor section, and the maximum temperature of rotor retaining ring reaches 170.36°C.

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