A study on the Influence of the Transformer on Cross-Regulationin DCM Multi-Output Flybacks
Conference: PCIM Europe 2022 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/10/2022 - 05/12/2022 at Nürnberg, Germany
doi:10.30420/565822199
Proceedings: PCIM Europe 2022
Pages: 8Language: englishTyp: PDF
Authors:
Motte-Michellon, Denis (Exxelia, France & Univ. Grenoble Alpes, CNRS, Grenoble INP, G2Elab, Grenoble, France)
Cogitore, Bruno (Exxelia, France)
Lembeye, Yves; Ramdane, Brahim (Univ. Grenoble Alpes, CNRS, Grenoble INP, G2Elab, Grenoble, France)
Abstract:
The multi-output DCM flyback (Discontinuous Conduction Mode) is a popular architecture for low-power converters (<100W) thanks to its low number of components, making it simple, reliable, cheap and able to power numerous loads. These advantages are however mitigated by voltage deviations due to poor cross-regulation, making extra regulation equipment necessary, thus adding complexity, costs and reducing the efficiency. In this paper, we use a Finite Element Method (FEM) model of a transformer to obtain a global explanation of the influence of the transformer on cross-regulation, along with general recommendations for a better transformer design.