CUED Publications database

A reconfigurable series resonant DC-DC converter for wide-input and wide-output voltages

Shen, Y and Wang, H and Qin, Z and Blaabjerg, F and Durra, AA (2017) A reconfigurable series resonant DC-DC converter for wide-input and wide-output voltages. In: UNSPECIFIED pp. 343-349..

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Abstract

This paper proposes a dual-bridge based LC series resonant dc-dc converter. The input inverter unit incorporates two bridge structures, i.e., a full-bridge inverter and a half-bridge inverter. For the output rectifier, it can be a full-bridge rectifier or an asymmetric half-bridge rectifier. Different from the conventional resonant converter, a fixed-frequency PWM control is employed which makes the optimization of magnetic components easier. The primary-side switches can achieve ZVS and the secondary-side diodes turn off with ZCS. In addition, the root-mean-square (RMS) values of the transformer currents do not significantly vary with respect to the voltage variation. Therefore, this converter can maintain high efficiency over a wide voltage range. The topology and operating principle are firstly described. Then the dc voltage gain and the RMS current characteristics are detailed. Finally, experimental results from a 500-W converter prototype verify the effectiveness of analysis, and the advantages of the proposed converter.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Subjects: UNSPECIFIED
Divisions: UNSPECIFIED
Depositing User: Cron Job
Date Deposited: 13 Mar 2019 20:32
Last Modified: 10 Apr 2021 00:32
DOI: 10.1109/APEC.2017.7930715