Publication

Performance of diagonal control structures at different operating conditions for polymer electrolyte membrane fuel cells

Journal Article (2006)

Journal

Journal of Power Sources

Pages

1317-1323

Volume

158

Number

2

Doc link

http://dx.doi.org/10.1016/j.jpowsour.2005.10.092

File

Download the digital copy of the doc pdf document

Abstract

This work is focused on the selection of operating conditions in polymer electrolyte membrane fuel cells. It analyses efficiency and controllability aspects, which change from one operating point to another. Specifically, several operating points that deliver the same amount of net power are compared, and the comparison is done at different net power levels. The study is based on a complex non-linear model, which has been linearised at the selected operating points. Different linear analysis tools are applied to the linear models and results show important controllability differences between operating points. The performance of diagonal control structures with PI controllers at different operating points is also studied. A method for the tuning of the controllers is proposed and applied. The behaviour of the controlled system is simulated with the non-linear model. Conclusions indicate a possible trade-off between controllability and optimisation of hydrogen consumption.

Categories

control theory, power system control.

Author keywords

PEMFC, diagonal control, PI controllers, operating conditions, linear analysis, efficiency

Scientific reference

M. Serra, A.P. Husar, D. Feroldi and J. Riera. Performance of diagonal control structures at different operating conditions for polymer electrolyte membrane fuel cells. Journal of Power Sources, 158(2): 1317-1323, 2006.