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

TL;DR

This paper introduces an algorithm for simulating switching converters using averaged models and ripple approximation, applicable to various converter types and modes, demonstrated through multiple example simulations.

Contribution

The paper presents a novel simulation algorithm based on the switching cell concept for both continuous and discontinuous modes, extending to multiple converter topologies.

Findings

Effective simulation of buck, boost, buck-boost, and flyback converters.

Applicable to both continuous and discontinuous conduction modes.

Demonstrated accuracy through simulation results.

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 buckboost, as well as a flyback converter, which required slight generalization of the switching cell concept.