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Nadia Steiner

Chaires d'excellence

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Nadia Yousfi Steiner

 

Fuel Cells are complex systems where several physical phenomena (electrical, fluidic, thermic, electrochemical..) occur at different scales.


To  ensure  efficient,  safe  and  reliable operation with competitive lifetime span, the Fuel cell system should be maintained in a narrow range of operating conditions. Many faulty operation modes result in performance loss, system shutdown or even irreversible failure. Therefore, methods that allow increasing tolerance to faults and thus increasing reliability and lifetime are highly needed.The idea of controlling a system that deviates from its nominal operation  has  been  largely  investigated,  first  through  the understanding of the deviation causes and mechanisms, then by developing tools that allow operating system’s health monitoring and, as recently proposed, more recently by developing tools that are able to predict the future behavior and  the  remaining  useful  lifetime. 

The  final  aim  of  all  these steps is to control the system in an optimal way, which includes integration  of  different  aspects:  predictive  control,  adaptive control and tolerance to faults.Before designing a control that is tolerant to faults, many other approaches should be considered: faults comprehension, health monitoring and prognostics. The used approaches are based on signal processing, nonintrusive, parsimonious towards sensing and easy to integrate online and onboard of an operating system, and matching the constrains of automotive and stationary applications. The fuel cell system is seen as a smart system that monitors, analyses and sends information about its state of operation and adapts its control to the occurring faults.

The holder of this project is Nadia Yousfi Steiner, who joined the Labex ACTION on the 15th of September 2014, as chair of excellence assigned to the IUT-BM for the teaching part and FEMTO-ST/ENERGYdepartment/SHPAC team for the research part.

She worked 7 years as researcher and R&D project manager at the European Institute for Energy Research in Karlsruhe (Germany) in charge of different project linked to fuel cells and hydrogen (as contributor, leader or investigator)

With competencies in diagnostics and prognostics of Fuel Cells systems, Nadia contributes to the development of projects in the Labex Action through the Work Package WP5 entitled: «Modeling, System architecture, Information processing» and in the demonstrator DEMO3: «Neuromorphic processor».


References:
[1] Yousfi Steiner N., Moçotéguy P., Candusso D., and Hissel D. ; A review on PEM Fuel Cell catalyst degradation and starvation issues: causes, consequences and diagnostic for mitigation ; J. Power Sources, Vol. 194(1), pp: 130-145, 2009.
[2]  Yousfi  Steiner  N.,  Hissel  D.,  Candusso  D.,  Mocoteguy P. and Gautier L. (2009), « detection of defects in an electrochemical system» ;brevet d’invention ; demande prioritaire : FR 09 54357 ; Extension de la protection N : PCT/FR2010/051295, brevet N° US20120116722, dépôt 25 Juin 2009.

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