An analytical process to size a flyback converter

Abstract

The paper deals with the sizing of a flyback converter. The approach proposes to use symbolic calculation to perform sizing times, the accuracy and the number of parameters to size. So, it presents a symbolic model to size a flyback converter using optimisation techniques. Such an approach is preferred to a simulation approach thanks to the flexibility of symbolic models and their possibility to treat a great set of criteria in few seconds or minutes. The expressions of a great part of the criteria are made by an automatic symbolic process ± model builders ± and the others are carried out by the designer. Such a model is used in a gradient optimisation process well known for its convergence properties. From this model, a builder carries out automatically the building of a dedicated sizing tool, by automatically transforming it into an optimisation problem and by automatically giving the corresponding sizing tool with its GUI.

Difference equation−based transient-state and steady-state analysis of flyback converter circuit

“…The flyback converter, one of the popular switching circuits, is widely used in the industry (Tetik et al, 2016;Pandey et al, 2014;Kanthimathi and Kamala, 2014;Jailyn et al 2014;Schutz et al 2001;Lin et al, 2005;Kewei et al, 2009) especially in conventional switching mode power supplies to supply low power and high output voltage. The flyback topology is essentially the buck-boost topology that is isolated by using a transformer as the storage inductor.…”