0
Research Papers

Design of a High Efficiency Fuel Cell dc/dc Converter Dedicated to Transportation Applications

[+] Author and Article Information
Abdellah Narjiss, Daniel Depernet, Frédéric Gustin, Alain Berthon

 FEMTO-ST Laboratory/ENISYS Department, FCLAB, Rue Thierry Mieg, F-90010 Belfort, France

Daniel Hissel

 FEMTO-ST Laboratory/ENISYS Department, FCLAB, Rue Thierry Mieg, F-90010 Belfort, Francedaniel.hissel@univ-fcomte.fr

J. Fuel Cell Sci. Technol 5(4), 041004 (Sep 05, 2008) (11 pages) doi:10.1115/1.2889009 History: Received July 13, 2006; Revised January 09, 2008; Published September 05, 2008

This work consists in a theoretical and practical study of a dc/dc converter designed to be coupled to a fuel cell stack in transport applications. It also proposes analysis and control of the whole system using digital signal processor (DSP) controller. The research is focused on the integration of a polymer electrolyte fuel cell (PEFC) stack in an embedded system. The fuel cell is characterized by a low-voltage high-current electrical power deliverty. Therefore, it is obvious that a dedicated power interface is necessary to adapt and fix voltage and current levels accordingly to the application requirements. In our case, the power conversion will be done by a high-frequency-transformer-based DC/DC converter. The use of a high frequency transformer allows obtaining significant output voltage ratio (approximately 12 in our case), high efficiency, reduce compactness of used elements and limited semi-conductors losses.

Copyright © 2008 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Simple model of PEFC stack

Grahic Jump Location
Figure 2

Experimental results: Impedance spectroscopy performed at 35A

Grahic Jump Location
Figure 3

Compared experimental and simulation Nyquist plots (for a 35A output current)

Grahic Jump Location
Figure 4

Boost converter (6)

Grahic Jump Location
Figure 5

High-ratio boost converter (9)

Grahic Jump Location
Figure 6

Two switches boost (10)

Grahic Jump Location
Figure 7

Half-bridge dc/dc converter (11)

Grahic Jump Location
Figure 8

Push-pull dc/dc converter

Grahic Jump Location
Figure 9

Different current-fed dc/dc converter topologies (12). (a) Current-fed half-bridge converter; (b) case of lossless snubber; (c) case of active lossless snubber.

Grahic Jump Location
Figure 10

Active clamping current-fed half-bridge dc/dc converter (12)

Grahic Jump Location
Figure 11

Cascade of two interleaved stages boost converter (13)

Grahic Jump Location
Figure 12

Considered dc/dc converter

Grahic Jump Location
Figure 13

dc/dc full-bridge converter

Grahic Jump Location
Figure 14

Evolution of efficiency of converters

Grahic Jump Location
Figure 15

Full-bridge dc/dc converter with noncontrolled rectifier

Grahic Jump Location
Figure 16

Full-bridge dc/dc converter with controlled rectifier

Grahic Jump Location
Figure 17

Variation of load voltage as a function of dead time alpha

Grahic Jump Location
Figure 18

Output voltage and electrical current of dc-bus network

Grahic Jump Location
Figure 19

FC stack voltage and current

Grahic Jump Location
Figure 20

Output voltage (Vload) load current (Iload)

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In