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Electronics 2019, 8(1), 3; https://doi.org/10.3390/electronics8010003

Resonant Converter with Voltage-Doubler Rectifier or Full-Bridge Rectifier for Wide-Output Voltage and High-Power Applications

1
Department of Electrical Engineering, National Yunlin University of Science and Technology, Yunlin 640, Taiwan
2
Mean Well Enterprises Co., Ltd., New Taipei City 24891, Taiwan
*
Author to whom correspondence should be addressed.
Received: 7 November 2018 / Revised: 11 December 2018 / Accepted: 19 December 2018 / Published: 20 December 2018
(This article belongs to the Section Power Electronics)
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Abstract

This paper presents a resonant converter with the benefits of wide output voltage, wide soft switching characteristics for power devices and high circuit efficiency. Since the series resonant circuit is adopted on the primary side, the power switches are turned on under zero voltage switching and power diodes on the secondary side can be turned off under zero current switching. To overcome the drawback of narrow voltage operation range in the conventional resonant converter, full-bridge rectifier and voltage-doubler rectifier topologies are employed on the secondary side for low-voltage output and high-voltage output applications. Therefore, the voltage rating of power devices on the secondary side is clamped at output voltage, rather than two times output voltage, in the center-tapped rectifier circuit. Synchronous power switches are used on the secondary side to further reduce the conduction losses so that the circuit efficiency can be further improved. To verify the theoretical analysis and circuit performance, a laboratory prototype with 1 kW rated power was built and tested. View Full-Text
Keywords: soft switching; resonant converter; wide output voltage soft switching; resonant converter; wide output voltage
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Lin, B.-R.; Lin, G.-H.; Jian, A. Resonant Converter with Voltage-Doubler Rectifier or Full-Bridge Rectifier for Wide-Output Voltage and High-Power Applications. Electronics 2019, 8, 3.

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