Simulation of Switching Converters on the Level of Averaged Voltages and Currents

TL;DR

The paper presents a new algorithm for simulating switching converters using averaged circuit models, applicable to various converter types and modes, demonstrated through multiple example simulations.

Contribution

It introduces a novel simulation algorithm based on the switching cell concept and ripple approximation, applicable to both continuous and discontinuous modes.

Findings

Successfully simulated buck, boost, buck-boost, and flyback converters.

The algorithm accurately captures waveforms in both conduction modes.

Demonstrated the method's versatility across different converter topologies.

Abstract

An algorithm for simulation of switching converters is proposed in the paper. The algorithm is based on simulation of averaged circuit model applying "switching cell" concept, and construction of instantaneous values of the waveforms using quasi steady state and linear ripple approximation. Simulation covers converters operating both in the continuous and the discontinuous conduction mode. Application of the algorithm is demonstrated by simulation results of all three of the basic converters: buck, boost and buck-boost, as well as a flyback converter, which required slight generalization of the switching cell concept.