Modelling of three-dimensional nonlinear eddy current problems with conductors in motion by an integral formulation

1996 ◽  
Vol 32 (3) ◽  
pp. 764-767 ◽  
Author(s):  
N. Esposito ◽  
A. Musolino ◽  
M. Raugi
Keyword(s):  
Eddy Current ◽  
Three Dimensional ◽  
Integral Formulation

MESSINE, a Parametric Three-Dimensional Eddy Current Model

2000 ◽  
Vol 12 (1) ◽  
pp. 65-86 ◽  
Author(s):  
R. La ◽  
B. Benoist ◽  
B. de Barmon ◽  
M. Talvard ◽  
R. Lengelle ◽  
...  
Keyword(s):  
Eddy Current ◽  
Current Model ◽  
Three Dimensional

scholarly journals An Alternative Method for Calculating the Eddy Current Loss in the Sleeve of a Sealless Pump

Actuators ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 78
Author(s):  
Tomislav Strinić ◽  
Bianca Wex ◽  
Gerald Jungmayr ◽  
Thomas Stallinger ◽  
Jörg Frevert ◽  
...  
Keyword(s):  
Eddy Current ◽  
Three Dimensional ◽  
Eddy Current Loss ◽  
Theoretical Background ◽  
Air Gap ◽  
Magnetic Flux Density ◽  
Pump Impeller ◽  
Current Loss ◽  
Faraday’S Law ◽  
Transient Simulations

A sealless pump, also known as a wet rotor pump or a canned pump, requires a stationary sleeve in the air gap to protect the stator from a medium that flows around the rotor and the pump impeller. Since the sleeve is typically made from a non-magnetic electrically conductive material, the time-varying magnetic flux density in the air gap creates an eddy current loss in the sleeve. Precise assessment of this loss is crucial for the design of the pump. This paper presents a method for calculating the eddy current loss in such sleeves by using only a two-dimensional (2D) finite element method (FEM) solver. The basic idea is to use the similar structure of Ampère’s circuital law and Faraday’s law of induction to solve eddy current problems with a magnetostatic solver. The theoretical background behind the proposed method is explained and applied to the sleeve of a sealless pump. Finally, the results obtained by a 2D FEM approach are verified by three-dimensional FEM transient simulations.

scholarly journals Three-Dimensional Analytical Modeling of an Eddy-Current-Based Non-Contact Speed Sensor

2021 ◽  
pp. 1-1
Author(s):  
Arda Tysz ◽  
Tibor Stolz ◽  
Annette Muetze ◽  
Michael Flankl ◽  
Spasoje Miric ◽  
...  
Keyword(s):  
Eddy Current ◽  
Analytical Modeling ◽  
Three Dimensional ◽  
Speed Sensor

An eddy-current model for three-dimensional inversion

1986 ◽  
Vol 22 (4) ◽  
pp. 282-291 ◽  
Author(s):  
H. Sabbagh ◽  
L. Sabbagh
Keyword(s):  
Eddy Current ◽  
Current Model ◽  
Three Dimensional

Experiment and Simulation of Eddy-Current Loss inside Copper Shielding of Transformers under DC Biasing Condition

2011 ◽  
Vol 304 ◽  
pp. 41-47 ◽  
Author(s):  
Zhi Gang Zhao ◽  
Fu Gui Liu ◽  
You Hua Wang ◽  
Peng Xiang Ren ◽  
Yu Huai Kan
Keyword(s):  
Eddy Current ◽  
Three Dimensional ◽  
Eddy Current Loss ◽  
Copper Plate ◽  
Current Loss ◽  
Local Loss ◽  
Ac Power ◽  
Dc Biasing ◽  
Transformer Core ◽  
Excitation Conditions

With the advent of power electronic technology, the excitation conditions applied to transformers, motors, etc. could be very atypical. DC bias excitation is an undesired working condition of AC power transformers, the asymmetrical saturation of the transformer core, the heavy noise, the serious vibration, and the local loss concentration can all potentially occurred in dc-biased transformers. The effect of the exciting current under different dc-biased magnetization on eddy-current loss in copper plate based on a reduced engineering-oriented benchmark model (TEAM Problem 21) is investigated. Experiment scheme for dc biasing is presented and the distribution of the eddy current loss under different dc-biased excitation conditions was studied in detail. The engineering applicability of three dimensional eddy current analysis methods for dc-biased magnetization field computation and the practical loss modeling are examined, which has been demonstrated via the numerical modeling results and the measured data.

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