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Novel topology for DC/DC unidirectional converter for fuel cell
Author(s) -
Ortega Manuel,
Jurado Francisco,
Valverde Manuel
Publication year - 2014
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2013.0142
Subject(s) - topology (electrical circuits) , forward converter , flyback converter , fuel cells , ćuk converter , computer science , electrical engineering , boost converter , engineering , voltage , chemical engineering
This study presents a new isolated DC/DC converter of full‐bridge to connect a fuel cell to DC bus in a hybrid distribution generation system. This converter consists of a high‐frequency transformer and a voltage booster circuit. The circuit has been designed and each isolated‐gate bipolar transistor (IGBT) presents soft‐switching during the whole power range of the converter. The switching losses of the IGBTs, the reverse‐recovery losses of all of the diodes, and the core losses have almost been eliminated. To improve the efficiency, transformer cores and inductors have been built with material nanocrystalline. The efficiency is improved if this is compared with that of a conventional zero‐voltage switching converter. Also, this converter can obtain a high‐voltage gain and medium and high DC power can be converted. The analysis and switching techniques have been reported. Finally, to verify the principle of operation, a laboratory prototype of 2 kW has been performed.

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