Ditherless extremum seeking for hydrogen minimization in PEM fuel cells
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Rights accessOpen Access
European Commisision's projectACOFC - Advanced Controllers and Observers Development for Fuel Cell based Generation Systems (EC-FP7-293876)
PUMA MIND - Physical bottom Up Multiscale Modelling for Automotive PEMFC Innovative performance and Durability optimization (EC-FP7-303419)
This paper presents a nonsmooth adaptive extremum seeker that minimizes the hydrogen consumption in a fuel-cell system. The extremum seeker operates by estimating the gradient of the objective function but, unlike other seekers, it does not require a dither signal to produce such estimate. The absence of a dither signal simplifies the choice of parameter values for the seeker, and more importantly, it allows it to converge to the optimal value exactly, not only to a small neighborhood. The proper functioning of the proposed scheme is proved using non-smooth Lyapunov analysis. The strategy is tested on the input–output map of a real polymer electrolyte fuel cells.
CitationCastaños, F., Kunusch, C. Ditherless extremum seeking for hydrogen minimization in PEM fuel cells. "IEEE transactions on industrial electronics", 01 Agost 2015, núm. 8, p. 5218-5226.