A novel approach for dynamic gas conditioning for PEMFC stack testing

János Kancsár*, Michael Striednig, David Aldrian, Alexander Trattner, Manfred Klell, Christoph Kügele, Stefan Jakubek

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

The air supply to the polymer electrolyte membrane fuel cell (PEMFC) stack is crucial for the performance of a PEMFC system. To enable modular and transient testing of the stack during development, a novel dynamic gas conditioning system is presented. To meet the requirements of transient stack testing, different hardware concepts for the testbed are evaluated and an experimental setup is realised. The thermodynamic states of this system are coupled through various relations and represent a nonlinear multivariate control problem. For controller design a dynamic nonlinear model of the system is derived and parameterised with measurements from the testbed. To decouple the system and achieve a good transient response the model-based nonlinear control concept of exact input-output linearisation is applied. Based on the decoupled system, a Two-Degree-of-Freedom (2DoF) controller is designed. The application of this nonlinear control concept on the realised hardware setup shows that accurate trajectory tracking during dynamic set point changes is ensured. Experimental results are presented to validate the control performance.

Original languageEnglish
Pages (from-to)28898-28909
Number of pages12
JournalInternational Journal of Hydrogen Energy
Volume42
Issue number48
DOIs
Publication statusPublished - 30 Nov 2017

Keywords

  • Differential flatness
  • Exact linearisation
  • Nonlinear dynamic modelling
  • Nonlinear multivariate control
  • PEMFC stack testing
  • PEMFC testbed

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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