A multi-timescale modeling methodology for PEMFC performance and durability in a virtual fuel cell car
Rights accessRestricted access - publisher's policy (embargoed until 2017-12-01)
The durability of polymer electrolyte membrane fuel cells (PEMFC) is governed by a nonlinear cou-pling between system demand, component behavior, and physicochemical degradation mechanisms, occurring on timescales from the sub-second to the thousand-hour. We present a simulation methodol-ogy for assessing performance and durability of a PEMFC under automotive driving cycles. The simu-lation framework consists of (a) a fuel cell car model converting velocity to cell power demand, (b) a 2D multiphysics cell model, (c) a flexible degradation library template that can accommodate physi-cally-based component-wise degradation mechanisms, and (d) a time-upscaling methodology for ex-trapolating degradation during a representative load cycle to multiple cycles. The computational framework describes three different time scales, (1) sub-second timescale of electrochemistry, (2) minute-timescale of driving cycles, and (3) thousand-hour-timescale of cell ageing. We demonstrate an exemplary PEMFC durability analysis due to membrane degradation under a highly transient load-ing of the New European Driving Cycle (NEDC).
CitationMayur, M., Strahl, S., Husar, A., Bessler, W. A multi-timescale modeling methodology for PEMFC performance and durability in a virtual fuel cell car. "International journal of hydrogen energy", 2015, vol. 40, núm. 46, p. 16466-16476.
|1678-A-multi-ti ... -virtual-fuel-cell-car.pdf||8.008Mb||Restricted access|