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High Efficiency Bus Provider for VLC Applications Based an Asymmetrical Half Bridge Converter with a Resonant DCX Auxiliary Output

Author:
Oliveira, Theyllor H.; Arias Pérez de Azpeitia, ManuelUniovi authority; González Lamar, DiegoUniovi authority; García Aller, DanielUniovi authority; López Antuña, AbrahamUniovi authority
Subject:

Asymmetrical half bridge

Two input buck

Resonant circuit

Visible Light Communication

Publication date:
2021
Editorial:

IEEE

Publisher version:
https://doi.org/10.1109/IECON48115.2021.9589442
Abstract:

The Two-Input Buck (TI Buck) Converter has low voltage stress over the switches, very high efficiency, and low harmonic components. Therefore, it is a prominent topology to work as a post-regulator in Visible Light Communication (VLC) systems. This works proposes a combination of an Asymmetrical Half Bridge (AHB) and a resonant dc-dc unregulated converter (DCX) to supply the two input voltage sources of the TI Buck based post-regulator. Due to the similarity in the primary side of these two converters (i.e AHB and DCX), the auxiliar DCX subcircuit will be coupled to the AHB without increasing the number of controlled switches. The topology, as well as the design constraints are studied in this paper. As example, a 45W AHB with an auxiliar DCX source is build. The topology reaches 94% of efficiency with the proposed independent behavior between the output voltages.

The Two-Input Buck (TI Buck) Converter has low voltage stress over the switches, very high efficiency, and low harmonic components. Therefore, it is a prominent topology to work as a post-regulator in Visible Light Communication (VLC) systems. This works proposes a combination of an Asymmetrical Half Bridge (AHB) and a resonant dc-dc unregulated converter (DCX) to supply the two input voltage sources of the TI Buck based post-regulator. Due to the similarity in the primary side of these two converters (i.e AHB and DCX), the auxiliar DCX subcircuit will be coupled to the AHB without increasing the number of controlled switches. The topology, as well as the design constraints are studied in this paper. As example, a 45W AHB with an auxiliar DCX source is build. The topology reaches 94% of efficiency with the proposed independent behavior between the output voltages.

Description:

47th Annual Conference of the IEEE Industrial Electronics Society, IECON (Troronto, Canadá, 13-16 octobre 2021)

URI:
http://hdl.handle.net/10651/62039
DOI:
10.1109/IECON48115.2021.9589418
Patrocinado por:

This work has been carried out by funding from the Spanish government through the RTI2018-099682-A-I00 project, under the PRE2019-088425 grant, and by the Principality of Asturias under the scholarship BP17-91.

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  • Ingeniería Eléctrica, Electrónica, de Comunicaciones y de Sistemas [1087]
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