Dynamic model of an RM type ferrite core to simulate the effects of saturation and power losses via 2D Finite Elements in the time domain

Abstract

This paper presents a 2D dynamic model of a ferrite inductor with an RM type core capable of reproducing the nonlinear effects of the core material, such as saturation and power losses, using 2D Finite Element simulations in the time-domain. Thus the computational cost is greately reduced. The effectiveness of the model is explored in the case of an inductor excited by a sinusoidal voltage source at frequencies of 500 Hz and 40 kHz. With this aim, experimental and computed results of voltage and current waveforms, power losses and nonlinear resistance (representing hysteresis and eddy current losses) are presented.