Title :
Simulation of eddy current effects in transformers
Author :
Chandrasena, W. ; McLaren, P.G. ; Annakkage, U.D. ; Jayasinghe, R.P. ; Dirks, E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Manitoba Univ., Winnipeg, Man., Canada
Abstract :
This paper describes the development of an electromagnetic transient model to represent the eddy current effects in transformer magnetising current. The magnetising current of a transformer is both nonlinear and frequency dependent. The frequency dependence is due to eddy currents. The most commonly used method to represent losses in a transformer model is to add a shunt resistance across one winding. In this paper we have extended a hysteresis model based on the Jiles Atherton theory of ferromagnetic hysteresis to include the effects of eddy currents. A comparison of simulation results and test results is presented in the paper.
Keywords :
eddy current losses; electric resistance; magnetic hysteresis; magnetisation; power transformers; transformer windings; Jiles Atherton theory; eddy current effects simulation; eddy currents; electromagnetic transient model; ferromagnetic hysteresis; frequency dependent; hysteresis model; nonlinear magnetising current; power transformers; shunt resistance; transformer magnetising current; Eddy currents; Frequency dependence; Iron; Magnetic flux; Magnetic hysteresis; Magnetic materials; Power system modeling; Power system simulation; Power system transients; Transformer cores;
Conference_Titel :
Electrical and Computer Engineering, 2002. IEEE CCECE 2002. Canadian Conference on
Print_ISBN :
0-7803-7514-9
DOI :
10.1109/CCECE.2002.1015185