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Identification of critical parameters for PEMFC stack performance characterization and control strategies for reliable and comparable stack benchmarking

Mitzel, Jens and Gülzow, Erich and Kabza, Alexander and Hunger, Jürgen and Araya, Samuel and Piela, Piotr and Alecha, Iker and Tsotridis, Georgios (2016) Identification of critical parameters for PEMFC stack performance characterization and control strategies for reliable and comparable stack benchmarking. International Journal of Hydrogen Energy, 41 (46), pp. 21415-21426. Elsevier. DOI: 10.1016/j.ijhydene.2016.08.065 ISSN 0360-3199

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Official URL: http://www.sciencedirect.com/science/article/pii/S0360319916324235

Abstract

This paper is focused on the identification of critical parameters and on the development of reliable methodologies to achieve comparable benchmark results. Possibilities for control sensor positioning and for parameter variation in sensitivity tests are discussed and recommended options for the control strategy are summarized. This ensures result comparability as well as stable test conditions. E.g., the stack temperature fluctuation is minimized to about 1 °C. The experiments demonstrate that reactants pressures differ up to 12 kPa if pressure control positions are varied, resulting in an average cell voltage deviation of 21 mV. Test parameters simulating different stack applications are summarized. The stack demonstrated comparable average cell voltage of 0.63 V for stationary and portable conditions. For automotive conditions, the voltage increased to 0.69 V, mainly caused by higher reactants pressures. A benchmarking concept is introduced using “steady-state” polarization curves. The occurring 20 mV hysteresis effect between the ascending and descending polarization curve can be corrected calculating the mean value of both voltages. This minimizes the influence of preceding load levels, current set points, and dwell times.

Item URL in elib:https://elib.dlr.de/108029/
Document Type:Article
Title:Identification of critical parameters for PEMFC stack performance characterization and control strategies for reliable and comparable stack benchmarking
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mitzel, Jensjens.mitzel (at) dlr.deUNSPECIFIED
Gülzow, ErichUNSPECIFIEDUNSPECIFIED
Kabza, AlexanderZSWUNSPECIFIED
Hunger, JürgenZSWUNSPECIFIED
Araya, SamuelAAUUNSPECIFIED
Piela, PiotricriUNSPECIFIED
Alecha, IkerCidetecUNSPECIFIED
Tsotridis, GeorgiosJRCUNSPECIFIED
Date:28 August 2016
Journal or Publication Title:International Journal of Hydrogen Energy
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:41
DOI :10.1016/j.ijhydene.2016.08.065
Page Range:pp. 21415-21426
Publisher:Elsevier
ISSN:0360-3199
Status:Published
Keywords:Polymer electrolyte membrane fuel cell Stack benchmarking Critical parameters Parameter control Test operating conditions “Steady-state” polarization curve
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Fuel cells
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Electrochemical Processes (Fuel Cells) (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Mitzel, Dr. Jens
Deposited On:22 Nov 2016 13:01
Last Modified:31 Jul 2019 20:05

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