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http://dx.doi.org/10.6113/TKPE.2015.20.3.280

High-Efficiency Full-Bridge DC-DC Converter with Current-Doubler Rectifier with Asymmetric Pulse-Width Modulation  

Yang, Min-Kwon (Div. of Electronic Engineering, Chonbuk Nat'l Univ.)
Choi, Woo-Young (Div. of Electronic Engineering, Chonbuk Nat'l Univ.)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.20, no.3, 2015 , pp. 280-289 More about this Journal
Abstract
A high-efficiency full-bridge DC-DC converter with a current-doubler rectifier and an asymmetric pulse-width modulation is proposed. Through the asymmetric pulse-width modulation, the proposed converter achieves zero-voltage switching of power switches without the circulating currents. The proposed converter reduces the output current ripple through the current-doubler rectifier. A control strategy is suggested for the proposed converter to charge battery banks. A constant current and constant voltage charging is performed. The proposed converter achieved a higher efficiency compared with the conventional full-bridge DC-DC converter with a phase-shift modulation. The performance of the proposed converter is evaluated by the experimental results for a 1.0 kW prototype circuit.
Keywords
Full-bridge DC-DC converter; Asymmetric pulse-width modulation; Current-doubler rectifier; Zero-voltage switching;
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