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SPECIAL SECTION ON THE 2ND EUROPEAN FUEL CELL TECHNOLOGY AND APPLICATIONS CONFERENCE

Generic Real-Time Modeling of Solid Oxide Fuel Cell Hybrid Systems

[+] Author and Article Information
Francesco Ghigliazza, Alberto Traverso

Thermochemical Power Group, University of Genoa, 16145 Genova, Italy

Aristide F. Massardo

Thermochemical Power Group, University of Genoa, 16145 Genova, Italymassardo@unige.it

John Wingate

 Wingate Dynamics Limited, 11 Hazelton Rd., Bristol BS7 ER, UKjohn.wingate@rrfcs.com

Mario Ferrari

 Rolls-Royce Fuel Cell Systems Limited, Loughborough LE11 3GR, UK

J. Fuel Cell Sci. Technol 6(2), 021312 (Mar 09, 2009) (7 pages) doi:10.1115/1.3080553 History: Received January 29, 2008; Revised May 29, 2008; Published March 09, 2009

Real-time (RT) modeling is a recognized approach to monitor advanced systems and to improve control capabilities. Applications of RT models are commonly used in the automotive and aerospace fields. Starting from existing components and models developed in TRANSEO[REF] , a new approach, called the multipurpose RT approach, is developed for the solid oxide fuel cell hybrid system application. Original C-based models have been reprogrammed into embedded MATLAB functions for direct use within MATLAB-SIMULINK . Also, models in TRANSEO have been simplified to improve execution time. Using MATLAB ’s Real-Time Workshop application, the system model is able to be translated into an autogenerated C-code, and run as an application specific RT executable.

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Copyright © 2009 by American Society of Mechanical Engineers
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References

Figures

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Figure 1

TRANSEO versus multipurpose valve model results

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Figure 2

TRANSEO versus multipurpose pipe model results: mass flow (upper) and temperature (lower) behavior

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Figure 3

TRANSEO versus multipurpose ejector model results

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Figure 4

RRFCS hybrid system cycle (Courtesy of RRFCS) (10-11)

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Figure 5

Initial comparison of on-design conditions

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Figure 6

Final comparison of on-design conditions

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Figure 7

Comparison of high pressure shaft rotational speed values in open-loop configuration

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Figure 8

Comparison of high pressure compressor delivery pressure in open-loop configuration

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Figure 9

Comparison of high pressure turbine TIT in open-loop configuration

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Figure 10

Comparison of off-gas burner outlet temperature in open-loop configuration

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Figure 11

Layout of the test rig/model used for validation (Courtesy of RRFCS)

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Figure 12

Validation of SUC outlet temperature

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Figure 13

Validation of ejector outlet temperature

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Figure 14

Validation of stack outlet temperature

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