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Mathematical Problems in Engineering
Volume 2014, Article ID 712360, 15 pages
Research Article

Sample-Data Modeling of a Zero Voltage Transition DC-DC Converter for On-Board Battery Charger in EV

1Coacalcos Institute of Tecnological Studies, 16 de Septiembre Avenue No. 54, Col. Cabecera Municipal, 55700 Coacalco de Berriozabal, MEX, Mexico
2School of Mechanical and Electrical Engineering, National Polytechnic Institute of Mexico, ESIME Cul., Santa Ana Avenue No. 1000, Col. San Francisco Culhuacan, 04430 Coyoacan, DF, Mexico
3Automotive Mechanical Engineering Department, Polytechnic University of Pachuca, Ex Hacienda de Santa Barbara, Carretera Pachuca Cd. Sahagún, Km. 20, 43830 Zempoala, HGO, Mexico

Received 30 November 2013; Accepted 5 February 2014; Published 2 June 2014

Academic Editor: Sheldon S. Williamson

Copyright © 2014 Teresa R. Granados-Luna et al. 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.


Battery charger is a key device in electric and hybrid electric vehicles. On-board and off-board topologies are available in the market. Lightweight, small, high performance, and simple control are desired characteristics for on-board chargers. Moreover, isolated single-phase topologies are the most common system in Level 1 battery charger topologies. Following this trend, this paper proposes a sampled-data modelling strategy of a zero voltage transition (ZVT) DC-DC converter for an on-board battery charger. A piece-wise linear analysis of the converter is the basis of the technique presented such that a large-signal model and, therefore, a small-signal model of the converter are derived. Numerical and simulation results of a 250 W test rig validate the model.