Title :
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
fDate :
3/1/1997 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
