Multi-scale computations of parameters of transformer windings at high frequencies. Part II
Artikel i vetenskaplig tidskrift, 2007

This part of the paper focuses on implementation of hierarchical multi-scale approach for modeling high frequency electromagnetic processes in power transformers. A large-scale 3D computer model for calculating magnetic fields in a transformer and evaluating effective parameters (inductance and resistance) of its windings and losses is presented. The model accounts for complex, anisotropic and frequency-dependent effective diamagnetic properties of the windings, which were obtained by solving small-scale 2D field problems as described in Part I of this paper. Results of the computations performed for a test transformer are analyzed in the frequency range 10 Hz – 10 MHz. Effects of windings conditions (open and short-circuited) and their location on the transformer core are discussed.

high frequency modeling

multi-scale analysis

power transformer

Effective diamagnetic property

finite element method

transformer winding

Författare

Alexander Podoltsev

Institute of Electrodynamics of the National Academy of Sciences of Ukraine

Nilanga Abeywickrama

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Yuriy Serdyuk

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Stanislaw Gubanski

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

IEEE Transactions on Magnetics

0018-9464 (ISSN)

Vol. 43 12 4076 - 4082

Ämneskategorier

Annan elektroteknik och elektronik

DOI

10.1109/TMAG.2007.908371

Mer information

Skapat

2017-10-07