Core loss behavior in high frequency high power transformers—I: Effect of core topology
Artikel i vetenskaplig tidskrift, 2012

This two-part paper presents an overview of core loss computations performed in both time and frequency domains in order to evaluate their behavior in single phase transformers with different core topologies. Moreover, the effects of non-sinusoidal waveforms on well-known core loss calculation methods are investigated with both analytically and finite element calculations. Three well-known configurations of transformers utilized in high frequency high power applications are investigated, namely, the core type, the shell type, and the matrix transformer. Based on the results obtained from a large number of FEM simulations for different operating conditions, the efficiencies of the transformers are compared in terms of distribution of magnetic flux density, loss density, total core loss, and weight. The analysis shows that for lower range of frequency and power, the shell type core could be the favorable option, and on the other hand, core type seems to be an appropriate solution for higher values of the operating frequency and nominal power.

amorphous magnetic materials

power convertors

power transformers

high-frequency transformers

transformer cores


Amin Bahmani

Chalmers, Energi och miljö, Elkraftteknik

E. Agheb

Norges teknisk-naturvitenskapelige universitet

Torbjörn Thiringer

Chalmers, Energi och miljö, Elkraftteknik

H. K. Høidalen

Norges teknisk-naturvitenskapelige universitet

Yuriy Serdyuk

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Journal of Renewable and Sustainable Energy

1941-7012 (ISSN)

Vol. 4 3 033112- 033112




Annan elektroteknik och elektronik



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