Optimizing air supply control of a PEM fuel cell system

Author

Rodatz, Paul ; Paganelli, Gino ; Guzzella, Lino

Author_Institution

Meas. & Control Lab., Swiss Fed. Inst. of Technol., Zurich, Switzerland

Volume

3

fYear

2003

fDate

4-6 June 2003

Firstpage

2043

Abstract

The application of an LQG regulator on the air supply of a PEM fuel cell system showed significant improvements over the results obtained with PI controllers. The pressure trace was successfully decoupled from the mass flow trace and the response time of the supply was increased. This paper presents a dynamic model of the air supply. It accounts for the dynamics of the compressor and the manifold filling processes that are associated with the piping volume before and after the fuel cell. The model was verified on a testbench and showed good agreement between simulation and measurement. Furthermore, the limitations of a variable pressure strategy are discussed.

Keywords

PI control; flow control; linear quadratic Gaussian control; optimisation; pressure control; proton exchange membrane fuel cells; LQG regulator; PEM fuel cell system; PI controllers; air supply control; compressor; dynamic model; manifold filling processes; optimisation; piping volume; testbench; variable pressure strategy; Control systems; Current density; Fuel cell vehicles; Fuel cells; Pressure control; Regulators; System testing; Valves; Vehicle dynamics; Weight control;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2003. Proceedings of the 2003

ISSN

0743-1619

Print_ISBN

0-7803-7896-2

Type

conf

DOI

10.1109/ACC.2003.1243375

Filename

1243375