Double resonant isolated converter for battery charger with fast switching semiconductors used in hybrid electric shunting locomotive

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Double resonant isolated converter for battery charger with fast switching semiconductors used in hybrid electric shunting locomotive

De Bernardinis, Alexandre / Butterbach, Stephane / Lallemand, Richard / Jeunesse, Alain / Coquery, Gerard / Aubin, Philippe

Abstract

This paper presents the study and experimental validation of a 9 kW lead-acid battery charger used to feed the 72 V DC-Bus inside a hybrid electric locomotive demonstrator realized in the frame of the French research project PLATHEE (energy-efficient and environmentally friendly train platform). The role of the converter is to supply the 72 V DC consumers and charge the battery. The proposed topology for the battery charger is a DC/AC/DC step-down converter structure using high frequency transformer and double resonant series-parallel dipole. Main advantages of this topology are losses minimization due to soft switching operation, reduction of passive component weight and easy system integration. However, development and testing of the converter remain complex owing to high frequency constraints. Anti-parallel diodes of DC/AC half-bridge dissipate losses in excess during switching sequences and their reverse recovery energy leads to constraining high current peaks. A solution consists in using fast Insulated Gate Bipolar Transistor (IGBT)/diode technology well suited to high frequency switching, and able to limit diode peak-current amplitude during switch-off. Electro-thermal endurance tests have been performed in order to characterize the thermal behavior of the semiconductor module and control its case temperature raising. The battery charger working has been first validated on laboratory test-bench using a battery emulator, and then implemented in the hybrid locomotive for electrical couplings tests.

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Dokumentinformationen

Titel :

Double resonant isolated converter for battery charger with fast switching semiconductors used in hybrid electric shunting locomotive

Beteiligte:

De Bernardinis, Alexandre (Autor:in) / Butterbach, Stephane (Autor:in) / Lallemand, Richard (Autor:in) / Jeunesse, Alain (Autor:in) / Coquery, Gerard (Autor:in) / Aubin, Philippe (Autor:in)

Erschienen in:

Electric Power Systems Research ; 92 ; 43-49

Erscheinungsdatum :

2012

Format / Umfang :

7 Seiten, 17 Quellen

ISSN :

0378-7796

DOI :

https://doi.org/10.1016/j.epsr.2012.04.020

Medientyp :

Aufsatz (Zeitschrift)