A fast time-domain simulation algorithm for the power electronic circuits

A new technique for the time-domain simulation of power electronic circuits is presented. The methodology is based on stepwise quadratic extrapolation of the reactive element branch voltages with progressive validation of the switches´ operations. The prominent features of this algorithm are: (1) its simplicity of solving a resistive network throughout the analysis without dealing with any complicated Laplace-transformed equation or differential formula; (2) its generality of determining the topological configuration without a priori understanding of the switching relationships; and (3) its consideration of the effects of parasitic elements. An example of a practical switch-mode buck regulator with overcurrent protection and maximum duty-cycle control is illustrated. The simulated results are favorably verified with the waveforms obtained by other available literature