A New Coupled-Inductor-Based High-Gain Interleaved DC-DC Converter With Sustained Soft Switching | IEEE Journals & Magazine | IEEE Xplore

A New Coupled-Inductor-Based High-Gain Interleaved DC-DC Converter With Sustained Soft Switching


Abstract:

This paper presents a new soft switching high voltage gain interleaved dc-dc converter with a three-windings coupled inductor for a fuel cell vehicle. Two interleaved and...Show More

Abstract:

This paper presents a new soft switching high voltage gain interleaved dc-dc converter with a three-windings coupled inductor for a fuel cell vehicle. Two interleaved and intercoupled boost cells are connected by the input parallel and output series (IPOS) configuration, realizing low input current ripple and high voltage gain simultaneously. All power switches can operate under soft switching conditions by only adding a simple auxiliary circuit composed of one auxiliary inductor and one power switch. Besides, the auxiliary inductor is coupled with the main inductors, which results in a rapid zero convergence of the auxiliary current and a small conduction loss of the auxiliary circuit. The operating principle, steady state characteristic, comparison with other converters, and parameter design are analyzed in this paper. Finally, the main characteristics of the proposed converter are verified by a 1-kW laboratory prototype.
Published in: IEEE Transactions on Vehicular Technology ( Volume: 70, Issue: 7, July 2021)
Page(s): 6527 - 6541
Date of Publication: 25 May 2021

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