Modelling eddy currents and hysteresis in a transformer laminate

Author

Holmberg, P. ; Bergqvist, A. ; Engdahl, G.

Author_Institution

Dept. of Electr. Power Eng., R. Inst. of Technol., Stockholm, Sweden

Volume

33

Issue

2

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

1306

Lastpage

1309

Abstract

A Cauer circuit model of a transformer laminate is presented. It considers saturation, eddy currents and hysteresis. The simulation results agree to experiments with an Epstein frame in the 10-200 Hz range. The paper includes a description of a computationally fast hysteresis model with few adjustable parameters and a physical approach to derive the Cauer circuit. The model can be used under various time-transient conditions and can easily be implemented into a larger system in a circuit simulation package, such as Saber, to study a transformers interaction with switching overvoltages, for example

Keywords

eddy currents; laminates; magnetic flux; magnetic hysteresis; overvoltage; transformer cores; transient analysis; 10 to 100 Hz; Cauer circuit model; Epstein frame; circuit simulation package; computationally fast hysteresis model; eddy currents; experiments; hysteresis; saturation; simulation results; switching overvoltages; switching transformer; time-transient conditions; transformer laminate; transformers interaction; Circuit faults; Circuit simulation; Computational modeling; Eddy currents; Hysteresis; Laminates; Packaging; Physics computing; Surges; Switching circuits;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.582495

Filename

582495