Soft-switching forward DC-DC converter using a continuous current mode for electric vehicle applications

Federico Martin Ibanez, Jose Martin Echeverria, Daniel Astigarraga, Luis Fontan

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

This study presents the analysis and design of a novel technique that improves the efficiency of the conventional forward DC-DC converter by reducing switching losses, along with a comprehensive analysis of the circuit and detailed information for designers. The converter uses the current control mode to trigger the switches. To use this control mode, an equalising circuit is presented in the input port to guarantee that the voltage in each half-switching period will be equal; otherwise, the current control mode cannot be applied. A 5 kW step-down (from 350-500 to 28.8 V) prototype is presented and compared with the traditional hard-switching forward converter for fully electric vehicle applications. In addition, the small-signal characteristics and the dynamic response for load variation are presented. Efficiency improvements of over 2% are obtained.

Original languageEnglish
Pages (from-to)1978-1986
Number of pages9
JournalIET Power Electronics
Volume8
Issue number10
DOIs
Publication statusPublished - 1 Oct 2015
Externally publishedYes

Fingerprint

Dive into the research topics of 'Soft-switching forward DC-DC converter using a continuous current mode for electric vehicle applications'. Together they form a unique fingerprint.

Cite this