Magnetic diagnostics for equilibrium reconstructions in the presence of nonaxisymmetric eddy current distributions in tokamaks (invited)

2010 ◽  
Vol 81 (10) ◽  
pp. 10E114 ◽  
Author(s):  
L. Berzak ◽  
A. D. Jones ◽  
R. Kaita ◽  
T. Kozub ◽  
N. Logan ◽  
...  
Keyword(s):  
Eddy Current ◽  
Current Distributions ◽  
Magnetic Diagnostics

scholarly journals VISUALIZATION OF EDDY CURRENT DISTRIBUTIONS FOR ARBITRARILY SHAPED COILS PARALLEL TO A MOVING CONDUCTOR SLAB

2016 ◽  
Vol 47 ◽  
pp. 1-12 ◽  
Author(s):  
Toshiya Itaya ◽  
Koichi Ishida ◽  
Yasuo Kubota ◽  
Akio Tanaka ◽  
Nobuo Takehira
Keyword(s):  
Eddy Current ◽  
Current Distributions ◽  
Moving Conductor

scholarly journals 3D harmonic modeling of eddy currents in segmented conducting structures

2019 ◽  
Vol 38 (1) ◽  
pp. 2-23 ◽  
Author(s):  
C.H.H.M. Custers ◽  
J.W. Jansen ◽  
M.C. van Beurden ◽  
E.A. Lomonova
Keyword(s):  
Finite Element ◽  
Eddy Current ◽  
Eddy Currents ◽  
Three Dimensional ◽  
Spatial Period ◽  
Content Type ◽  
Current Distributions ◽  
Wide Range ◽  
Conductivity Function ◽  
Electromagnetic Quantities

PurposeThe purpose of this paper is to describe a semi-analytical modeling technique to predict eddy currents in three-dimensional (3D) conducting structures with finite dimensions. Using the developed method, power losses and parasitic forces that result from eddy current distributions can be computed.Design/methodology/approachIn conducting regions, the Fourier-based solutions are developed to include a spatially dependent conductivity in the expressions of electromagnetic quantities. To validate the method, it is applied to an electromagnetic configuration and the results are compared to finite element results.FindingsThe method shows good agreement with the finite element method for a large range of frequencies. The convergence of the presented model is analyzed.Research limitations/implicationsBecause of the Fourier series basis of the solution, the results depend on the considered number of harmonics. When conducting structures are small with respect to the spatial period, the number of harmonics has to be relatively large.Practical implicationsBecause of the general form of the solutions, the technique can be applied to a wide range of electromagnetic configurations to predict, e.g. eddy current losses in magnets or wireless energy transfer systems. By adaptation of the conductivity function in conducting regions, eddy current distributions in structures containing holes or slit patterns can be obtained.Originality/valueWith the presented technique, eddy currents in conducting structures of finite dimensions can be modeled. The semi-analytical model is for a relatively low number of harmonics computationally faster than 3D finite element methods. The method has been validated and shown to be computationally accurate.

Cleaning of the Eddy Current Effects From Magnetic Diagnostics

2019 ◽  
Vol 47 (1) ◽  
pp. 858-863
Author(s):  
Ondrej Kudlacek ◽  
Giuseppe Marchiori ◽  
Claudio Finotto ◽  
Paolo Bettini ◽  
Rafael Henriques ◽  
...  
Keyword(s):  
Eddy Current ◽  
Magnetic Diagnostics

scholarly journals Analysis of eddy current distributions in the CMS magnet yoke during the solenoid discharge

2005 ◽  
Vol 52 (3) ◽  
pp. 741-744 ◽  
Author(s):  
V.I. Klyukhin ◽  
D. Campi ◽  
B. Cure ◽  
A. Gaddi ◽  
H. Gerwig ◽  
...  
Keyword(s):  
Eddy Current ◽  
Current Distributions ◽  
Magnet Yoke
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