Abstract
The water management is critical for the operation of PEM fuel cells and has a strong impact on its performance and durability. The aim of this work is the simulation-based investigation of the operation of a PEM fuel cell system with the special focus on its water management.In order to analyze these dependencies correctly, a 2-D + 1-D PEM fuel cell stack model has been developed, which on the one hand has a high level of modelling details and on the other hand meets high requirements concerning its runtime, to enable acceptable simulation times for fuel cell system simulations. The fuel cell model is integrated into an AVL Cruise-M fuel cell system simulation.An analysis is presented comparing a system operation with a fuel cell in co- and counter-flow configuration with a special focus on the local and overall water management.
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