Dual Voltage Forward Topology for High Efficiency at Universal Mains
Authors
Ezra, N
Werner, T
Long, T
Publication Date
2022Journal Title
Electronics (Switzerland)
ISSN
1450-5843
Publisher
MDPI AG
Volume
11
Issue
7
Language
en
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Ezra, N., Werner, T., & Long, T. (2022). Dual Voltage Forward Topology for High Efficiency at Universal Mains. Electronics (Switzerland), 11 (7) https://doi.org/10.3390/electronics11071009
Abstract
<jats:p>This paper introduces a forward converter aimed at the universal mains voltages, i.e., 220–230 Vac and 115 Vac, named the ‘dual voltage forward converter’. The suggested converter has a narrow dynamic range at the universal mains voltages, which results in lower stress on devices, optimal duty cycles, and better overall efficiency. The topology comprises two primary power loops reconfigurable by additional two-state switches and a passive diode, which allows the converter to run in parallel or in series modes and increase the performance over the full universal mains range of 90–265 Vac. The utilization of the devices is better, as they experience lower voltage and current stress by supporting two optimized working points. A converter operating at 100 kHz with an output power of 75 W and output voltage of 12 Vdc was designed and tested. The results were compared with a conventional forward converter with the identical specification. The results at the low mains were similar between the converters; however, at the high mains, the efficiency improvement was between 5% and 23%.</jats:p>
Keywords
dual voltage, forward converter, wide input range
Identifiers
External DOI: https://doi.org/10.3390/electronics11071009
This record's URL: https://www.repository.cam.ac.uk/handle/1810/335418
Rights
Licence:
https://creativecommons.org/licenses/by/4.0/
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