Automotive Fuel Cell Systems

Testing Highly Dynamic Scenarios

authored by

Jonas Breitinger, Mark Hellmann, Helerson Kemmer, Stephan Kabelac

Abstract

PEM fuel cell systems face highly dynamic load profiles in automotive application. This work showcases the impact of media supply adaption, system architecture and test rig restrictions on the transient voltage response of an automotive fuel cell stack. Current step and load profile experiments were conducted on a system test rig, featuring automotive balance of plant components, and a short stack test bench. A time scale analysis allowed us to identify the predominant effect for the voltage response in each test case. The voltage response measured in the test cases was dominated either by air supply, membrane humidification or coolant temperature dynamics. This systematic comparison of different types of test setups highlights the importance of application-like system level testing as, in contrast to common experiments, different phenomena shape the electrical stack behavior.

Organisation(s)

Institute of Thermodynamics

External Organisation(s)

Robert Bosch GmbH

Type

Article

Journal

ENERGIES

Volume

16

ISSN

1996-1073

Publication date

05.01.2023

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment, Building and Construction, Fuel Technology, Engineering (miscellaneous), Energy Engineering and Power Technology, Energy (miscellaneous), Control and Optimization, Electrical and Electronic Engineering

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Electronic version(s)

https://doi.org/10.3390/en16020664 (Access: Open)