Title :
A dynamic equivalent circuit model for solid magnetic cores for high switching frequency operations
Author :
Zhu, J.G. ; Hui, Shu Yuen Ron ; Ramsden, V.S.
Author_Institution :
Sch. of Electr. Eng., Univ. of Technol., Sydney, NSW, Australia
fDate :
11/1/1995 12:00:00 AM
Abstract :
This paper presents a dynamic equivalent circuit model of solid magnetic cores for high frequency operations in power electronic circuits. The effects of eddy current, domain wall motion, and hysteresis are taken into account by distributed equivalent resistors and distributed nonideal differential inductors, respectively. The Preisach hysteresis model is employed to simulate hysteresis effects in the inductors. A discrete transform technique based on the transmission line method is adopted to develop a discrete model for numerical dynamic analysis. The resultant model is just a simple tridiagonal system of equations. Good agreement between computer simulations and measurements has confirmed the validity of the new model
Keywords :
eddy currents; equivalent circuits; magnetic cores; magnetic hysteresis; power electronics; switching circuits; Preisach hysteresis model; computer simulation; discrete transform technique; distributed equivalent resistors; distributed nonideal differential inductors; domain wall motion; dynamic equivalent circuit model; eddy current; high switching frequency operations; hysteresis effects simulation; magnetic hysteresis; numerical dynamic analysis; power electronic circuits; solid magnetic cores; tridiagonal equation system; Eddy currents; Equivalent circuits; Frequency; Inductors; Magnetic circuits; Magnetic cores; Magnetic domain walls; Magnetic hysteresis; Power electronics; Solid modeling;
Journal_Title :
Power Electronics, IEEE Transactions on
