Analysis of Hybrid Converter with Wide Voltage Range Operation

Bor-Ren Lin

Analysis of Hybrid Converter with Wide Voltage Range Operation

Bor-Ren Lin

Vol. 19, No. 5, pp. 1099-1107, Sep. 2019

https://doi.org/10.6113/JPE.2019.19.5.1099

Hybrid resonant circuit

Soft switching operation

Wide voltage operation

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Abstract

A soft switching converter with wide voltage range operation is investigated in this paper. A series resonant converter is implemented to achieve a high circuit efficiency with soft switching characteristics on power switches and rectifier diodes. To improve the weakness of the narrow voltage range in LLC converters, an alternating current (ac) power switch is used on the primary side to select a half-bridge or full-bridge resonant circuit to implement 4:1 voltage range operation. On the secondaryside, another ac power switch is adopted to select a full-wave rectifier or voltage-doubler rectifier to achiever an additional 2:1 output voltage range. Therefore, the proposed resonant converter has the capacity for 8:1 (320V~40V) wide output voltage operation. A single-stage hybrid resonant converter is employed in the study circuit instead of a two-stage dc converter to achiever wide voltage range operation. As a result, the study converter has better converter efficiency. The theoretical analysis and circuit characteristics are verified by experiments with a prototype circuit.

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Cite this article

[IEEE Style]

B. Lin, "Analysis of Hybrid Converter with Wide Voltage Range Operation," Journal of Power Electronics, vol. 19, no. 5, pp. 1099-1107, 2019. DOI: https://doi.org/10.6113/JPE.2019.19.5.1099.

[ACM Style]

Bor-Ren Lin. 2019. Analysis of Hybrid Converter with Wide Voltage Range Operation. Journal of Power Electronics, 19, 5, (2019), 1099-1107. DOI: https://doi.org/10.6113/JPE.2019.19.5.1099.